diff options
Diffstat (limited to 'lib/stdlib/doc/src')
76 files changed, 5076 insertions, 1377 deletions
diff --git a/lib/stdlib/doc/src/Makefile b/lib/stdlib/doc/src/Makefile index ff77c3eea0..26602764a6 100644 --- a/lib/stdlib/doc/src/Makefile +++ b/lib/stdlib/doc/src/Makefile @@ -1,18 +1,19 @@ # # %CopyrightBegin% # -# Copyright Ericsson AB 1997-2012. All Rights Reserved. +# Copyright Ericsson AB 1997-2016. All Rights Reserved. # -# The contents of this file are subject to the Erlang Public License, -# Version 1.1, (the "License"); you may not use this file except in -# compliance with the License. You should have received a copy of the -# Erlang Public License along with this software. If not, it can be -# retrieved online at http://www.erlang.org/. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at # -# Software distributed under the License is distributed on an "AS IS" -# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -# the License for the specific language governing rights and limitations -# under the License. +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. # # %CopyrightEnd% # @@ -48,6 +49,7 @@ XML_REF3_FILES = \ digraph.xml \ digraph_utils.xml \ epp.xml \ + erl_anno.xml \ erl_eval.xml \ erl_expand_records.xml \ erl_id_trans.xml \ @@ -66,6 +68,7 @@ XML_REF3_FILES = \ gen_event.xml \ gen_fsm.xml \ gen_server.xml \ + gen_statem.xml \ io.xml \ io_lib.xml \ lib.xml \ @@ -76,12 +79,12 @@ XML_REF3_FILES = \ ms_transform.xml \ orddict.xml \ ordsets.xml \ - pg.xml \ pool.xml \ proc_lib.xml \ proplists.xml \ qlc.xml \ queue.xml \ + rand.xml \ random.xml \ re.xml \ sets.xml \ @@ -101,7 +104,7 @@ XML_REF3_FILES = \ XML_REF6_FILES = stdlib_app.xml XML_PART_FILES = part.xml part_notes.xml part_notes_history.xml -XML_CHAPTER_FILES = io_protocol.xml unicode_usage.xml notes.xml notes_history.xml +XML_CHAPTER_FILES = io_protocol.xml unicode_usage.xml notes.xml notes_history.xml assert_hrl.xml BOOK_FILES = book.xml diff --git a/lib/stdlib/doc/src/array.xml b/lib/stdlib/doc/src/array.xml index b03a2fa0cc..bff98245bf 100644 --- a/lib/stdlib/doc/src/array.xml +++ b/lib/stdlib/doc/src/array.xml @@ -3,20 +3,21 @@ <erlref> <header> <copyright> - <year>2007</year><year>2014</year> + <year>2007</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -93,9 +94,6 @@ the default value cannot be confused with the values of set entries.</p> </datatype> <datatype> <name name="array" n_vars="0"/> - <desc> - <p><c>array()</c> is equivalent to <c>array(term())</c>.</p> - </desc> </datatype> <datatype> <name name="array_indx"/> @@ -166,7 +164,7 @@ the default value cannot be confused with the values of set entries.</p> </fsummary> <desc><marker id="from_list-1"/> -<p>Equivalent to <seealso marker="#from_list-2">from_list(<anno>List</anno>, undefined)</seealso>.</p> +<p>Equivalent to <seealso marker="#from_list-2">from_list(<c><anno>List</anno></c>, undefined)</seealso>.</p> </desc></func> <func> <name name="from_list" arity="2"/> @@ -186,7 +184,7 @@ the default value cannot be confused with the values of set entries.</p> </fsummary> <desc><marker id="from_orddict-1"/> -<p>Equivalent to <seealso marker="#from_orddict-2">from_orddict(<anno>Orddict</anno>, undefined)</seealso>.</p> +<p>Equivalent to <seealso marker="#from_orddict-2">from_orddict(<c><anno>Orddict</anno></c>, undefined)</seealso>.</p> </desc></func> <func> <name name="from_orddict" arity="2"/> diff --git a/lib/stdlib/doc/src/assert_hrl.xml b/lib/stdlib/doc/src/assert_hrl.xml new file mode 100644 index 0000000000..ef4f928e57 --- /dev/null +++ b/lib/stdlib/doc/src/assert_hrl.xml @@ -0,0 +1,158 @@ +<?xml version="1.0" encoding="utf-8" ?> +<!DOCTYPE fileref SYSTEM "fileref.dtd"> + +<fileref> + <header> + <copyright> + <year>2012</year><year>2015</year> + <holder>Ericsson AB. All Rights Reserved.</holder> + </copyright> + <legalnotice> + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + </legalnotice> + + <title>assert.hrl</title> + <prepared></prepared> + <docno></docno> + <date></date> + <rev></rev> + </header> + <file>assert.hrl</file> + <filesummary>Assert Macros</filesummary> + <description> + <p>The include file <c>assert.hrl</c> provides macros for inserting + assertions in your program code.</p> + <p>These macros are defined in the Stdlib include file + <c>assert.hrl</c>. Include the following directive in the module + from which the function is called:</p> + <code type="none"> +-include_lib("stdlib/include/assert.hrl").</code> + <p>When an assertion succeeds, the assert macro yields the atom + <c>ok</c>. When an assertion fails, an exception of type <c>error</c> is + instead generated. The associated error term will have the form + <c>{Macro, Info}</c>, where <c>Macro</c> is the name of the macro, for + example <c>assertEqual</c>, and <c>Info</c> will be a list of tagged + values such as <c>[{module, M}, {line, L}, ...]</c> giving more + information about the location and cause of the exception. All entries + in the <c>Info</c> list are optional, and you should not rely + programatically on any of them being present.</p> + + <p>If the macro <c>NOASSERT</c> is defined when the <c>assert.hrl</c> + include file is read by the compiler, the macros will be defined as + equivalent to the atom <c>ok</c>. The test will not be performed, and + there will be no cost at runtime.</p> + + <p>For example, using <c>erlc</c> to compile your modules, the following + will disable all assertions:</p> + <code type="none"> +erlc -DNOASSERT=true *.erl</code> + <p>(The value of <c>NOASSERT</c> does not matter, only the fact that it + is defined.)</p> + <p>A few other macros also have effect on the enabling or disabling of + assertions:</p> + <list type="bulleted"> + <item>If <c>NODEBUG</c> is defined, it implies <c>NOASSERT</c>, unless + <c>DEBUG</c> is also defined, which is assumed to take + precedence.</item> + <item>If <c>ASSERT</c> is defined, it overrides <c>NOASSERT</c>, that + is, the assertions will remain enabled.</item> + </list> + <p>If you prefer, you can thus use only <c>DEBUG</c>/<c>NODEBUG</c> as + the main flags to control the behaviour of the assertions (which is + useful if you have other compiler conditionals or debugging macros + controlled by those flags), or you can use <c>ASSERT</c>/<c>NOASSERT</c> + to control only the assert macros.</p> + + </description> + + <section> + <title>Macros</title> + <taglist> + <tag><c>assert(BoolExpr)</c></tag> + <item><p>Tests that <c>BoolExpr</c> completes normally returning + <c>true</c>.</p> + </item> + + <tag><c>assertNot(BoolExpr)</c></tag> + <item><p>Tests that <c>BoolExpr</c> completes normally returning + <c>false</c>.</p> + </item> + + <tag><c>assertMatch(GuardedPattern, Expr)</c></tag> + <item><p>Tests that <c>Expr</c> completes normally yielding a value + that matches <c>GuardedPattern</c>. For example:</p> + <code type="none"> + ?assertMatch({bork, _}, f())</code> + <p>Note that a guard <c>when ...</c> can be included:</p> + <code type="none"> + ?assertMatch({bork, X} when X > 0, f())</code> + </item> + + <tag><c>assertNotMatch(GuardedPattern, Expr)</c></tag> + <item><p>Tests that <c>Expr</c> completes normally yielding a value + that does not match <c>GuardedPattern</c>.</p> + <p>As in <c>assertMatch</c>, <c>GuardedPattern</c> can have a + <c>when</c> part.</p> + </item> + + <tag><c>assertEqual(ExpectedValue, Expr)</c></tag> + <item><p>Tests that <c>Expr</c> completes normally yielding a value + that is exactly equal to <c>ExpectedValue</c>.</p> + </item> + + <tag><c>assertNotEqual(ExpectedValue, Expr)</c></tag> + <item><p>Tests that <c>Expr</c> completes normally yielding a value + that is not exactly equal to <c>ExpectedValue</c>.</p> + </item> + + <tag><c>assertException(Class, Term, Expr)</c></tag> + <item><p>Tests that <c>Expr</c> completes abnormally with an exception + of type <c>Class</c> and with the associated <c>Term</c>. The + assertion fails if <c>Expr</c> raises a different exception or if it + completes normally returning any value.</p> + <p>Note that both <c>Class</c> and <c>Term</c> can be guarded + patterns, as in <c>assertMatch</c>.</p> + </item> + + <tag><c>assertNotException(Class, Term, Expr)</c></tag> + <item><p>Tests that <c>Expr</c> does not evaluate abnormally with an + exception of type <c>Class</c> and with the associated <c>Term</c>. + The assertion succeeds if <c>Expr</c> raises a different exception or + if it completes normally returning any value.</p> + <p>As in <c>assertException</c>, both <c>Class</c> and <c>Term</c> + can be guarded patterns.</p> + </item> + + <tag><c>assertError(Term, Expr)</c></tag> + <item><p>Equivalent to <c>assertException(error, Term, + Expr)</c></p> + </item> + + <tag><c>assertExit(Term, Expr)</c></tag> + <item><p>Equivalent to <c>assertException(exit, Term, Expr)</c></p> + </item> + + <tag><c>assertThrow(Term, Expr)</c></tag> + <item><p>Equivalent to <c>assertException(throw, Term, Expr)</c></p> + </item> + + </taglist> + </section> + + <section> + <title>SEE ALSO</title> + <p><seealso marker="compiler:compile">compile(3)</seealso></p> + <p><seealso marker="erts:erlc">erlc(3)</seealso></p> + </section> +</fileref> diff --git a/lib/stdlib/doc/src/base64.xml b/lib/stdlib/doc/src/base64.xml index c4982f4eaa..7b82d7dd3d 100644 --- a/lib/stdlib/doc/src/base64.xml +++ b/lib/stdlib/doc/src/base64.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2007</year><year>2013</year> + <year>2007</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/beam_lib.xml b/lib/stdlib/doc/src/beam_lib.xml index eb4974a79f..7c89c8b43e 100644 --- a/lib/stdlib/doc/src/beam_lib.xml +++ b/lib/stdlib/doc/src/beam_lib.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2000</year><year>2013</year> + <year>2000</year><year>2015</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -70,6 +71,7 @@ using <seealso marker="#strip/1">strip/1</seealso>, <seealso marker="#strip_files/1">strip_files/1</seealso> and/or <seealso marker="#strip_release/1">strip_release/1</seealso>.</p> + </section> <section> <title>Reconstructing source code</title> <p>Here is an example of how to reconstruct source code from @@ -151,7 +153,6 @@ keys.</p> </note> </section> - </section> <datatypes> <datatype> @@ -223,6 +224,13 @@ <funcs> <func> + <name name="all_chunks" arity="1"/> + <fsummary>Read all chunks from a BEAM file or binary</fsummary> + <desc> + <p>Reads chunk data for all chunks.</p> + </desc> + </func> + <func> <name name="chunks" arity="2"/> <fsummary>Read selected chunks from a BEAM file or binary</fsummary> <desc> @@ -250,6 +258,13 @@ </desc> </func> <func> + <name name="build_module" arity="1"/> + <fsummary>Creates a BEAM module from a list of chunks</fsummary> + <desc> + <p>Builds a BEAM module (as a binary) from a list of chunks.</p> + </desc> + </func> + <func> <name name="version" arity="1"/> <fsummary>Read the BEAM file's module version</fsummary> <desc> diff --git a/lib/stdlib/doc/src/binary.xml b/lib/stdlib/doc/src/binary.xml index 2410f1f9b8..933157fc34 100644 --- a/lib/stdlib/doc/src/binary.xml +++ b/lib/stdlib/doc/src/binary.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>2009</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved on line at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> @@ -298,8 +299,8 @@ </func> <func> <name name="match" arity="3"/> - <type name="part"/> <fsummary>Searches for the first match of a pattern in a binary</fsummary> + <type name="part"/> <desc> <p>Searches for the first occurrence of <c><anno>Pattern</anno></c> in <c><anno>Subject</anno></c> and @@ -352,8 +353,8 @@ </func> <func> <name name="matches" arity="3"/> - <type name="part"/> <fsummary>Searches for all matches of a pattern in a binary</fsummary> + <type name="part"/> <desc> <p>Works like <c>match/2</c>, but the <c><anno>Subject</anno></c> is searched until @@ -365,7 +366,7 @@ <code> 1> binary:matches(<<"abcde">>, - [<<"bcde">>,<<"bc">>>,<<"de">>],[]). + [<<"bcde">>,<<"bc">>,<<"de">>],[]). [{1,4}] </code> @@ -450,7 +451,7 @@ store(Binary, GBSet) -> </code> <p>In this example, we chose to copy the binary content before - inserting it in the <c>gb_set()</c> if it references a binary more than + inserting it in the <c>gb_sets:set()</c> if it references a binary more than twice the size of the data we're going to keep. Of course different rules for when copying will apply to different programs.</p> @@ -578,6 +579,10 @@ store(Binary, GBSet) -> <item><p>Removes trailing empty parts of the result (as does trim in <c>re:split/3</c>)</p></item> + <tag>trim_all</tag> + + <item><p>Removes all empty parts of the result.</p></item> + <tag>global</tag> <item><p>Repeats the split until the <c><anno>Subject</anno></c> is diff --git a/lib/stdlib/doc/src/book.xml b/lib/stdlib/doc/src/book.xml index b1b67d661c..84ce3f0788 100644 --- a/lib/stdlib/doc/src/book.xml +++ b/lib/stdlib/doc/src/book.xml @@ -4,20 +4,21 @@ <book xmlns:xi="http://www.w3.org/2001/XInclude"> <header titlestyle="normal"> <copyright> - <year>1997</year><year>2013</year> + <year>1997</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/c.xml b/lib/stdlib/doc/src/c.xml index b49fa6ad67..9b4a9489c0 100644 --- a/lib/stdlib/doc/src/c.xml +++ b/lib/stdlib/doc/src/c.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -120,12 +121,12 @@ compile:file(<anno>File</anno>, <anno>Options</anno> ++ [report_errors, report_w </func> <func> <name>lc(Files) -> ok</name> + <fsummary>Compile a list of files</fsummary> <type> <v>Files = [File]</v> <v>File = <seealso marker="file#type-filename">file:filename() </seealso></v> </type> - <fsummary>Compile a list of files</fsummary> <desc> <p>Compiles a list of files by calling <c>compile:file(File, [report_errors, report_warnings])</c> for each <c>File</c> in <c>Files</c>.</p> @@ -232,6 +233,14 @@ compile:file(<anno>File</anno>, <anno>Options</anno> ++ [report_errors, report_w </desc> </func> <func> + <name name="uptime" arity="0"/> + <fsummary>Print node uptime</fsummary> + <desc> + <p>Prints the node uptime (as given by + <c>erlang:statistics(wall_clock)</c>), in human-readable form.</p> + </desc> + </func> + <func> <name>xm(ModSpec) -> void()</name> <fsummary>Cross reference check a module</fsummary> <type> diff --git a/lib/stdlib/doc/src/calendar.xml b/lib/stdlib/doc/src/calendar.xml index e32a639b81..38bf55679e 100644 --- a/lib/stdlib/doc/src/calendar.xml +++ b/lib/stdlib/doc/src/calendar.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -129,11 +130,11 @@ <func> <name name="date_to_gregorian_days" arity="1"/> <name name="date_to_gregorian_days" arity="3"/> + <fsummary>Compute the number of days from year 0 up to the given date</fsummary> <type variable="Date" name_i="1"/> <type variable="Year"/> <type variable="Month"/> <type variable="Day"/> - <fsummary>Compute the number of days from year 0 up to the given date</fsummary> <desc> <p>This function computes the number of gregorian days starting with year 0 and ending at the given date.</p> @@ -270,7 +271,8 @@ <fsummary>Convert now to local date and time</fsummary> <desc> <p>This function returns local date and time converted from - the return value from <c>erlang:now()</c>.</p> + the return value from + <seealso marker="erts:erlang#timestamp/0"><c>erlang:timestamp/0</c></seealso>.</p> </desc> </func> <func> @@ -279,7 +281,8 @@ <fsummary>Convert now to date and time</fsummary> <desc> <p>This function returns Universal Coordinated Time (UTC) - converted from the return value from <c>erlang:now()</c>.</p> + converted from the return value from + <seealso marker="erts:erlang#timestamp/0"><c>erlang:timestamp/0</c></seealso>.</p> </desc> </func> <func> @@ -344,11 +347,11 @@ <func> <name name="valid_date" arity="1"/> <name name="valid_date" arity="3"/> + <fsummary>Check if a date is valid</fsummary> <type variable="Date" name_i="1"/> <type variable="Year"/> <type variable="Month"/> <type variable="Day"/> - <fsummary>Check if a date is valid</fsummary> <desc> <p>This function checks if a date is a valid.</p> </desc> diff --git a/lib/stdlib/doc/src/dets.xml b/lib/stdlib/doc/src/dets.xml index 6bbedb0662..177c2ba508 100644 --- a/lib/stdlib/doc/src/dets.xml +++ b/lib/stdlib/doc/src/dets.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -315,20 +316,20 @@ bytes.</p> </item> <item> - <p><c>{filename, <seealso marker="file#type-name">file:name()</seealso>}</c>, + <p><c>{filename, </c><seealso marker="file#type-name">file:name()</seealso><c>}</c>, the name of the file where objects are stored.</p> </item> <item> - <p><c>{keypos, <seealso marker="#type-keypos">keypos()</seealso>} - </c>, the position of the key.</p> + <p><c>{keypos, </c><seealso marker="#type-keypos">keypos()</seealso> + <c>}</c>, the position of the key.</p> </item> <item> <p><c>{size, integer() >= 0}</c>, the number of objects stored in the table.</p> </item> <item> - <p><c>{type, <seealso marker="#type-type">type()</seealso>}</c>, - the type of the table.</p> + <p><c>{type, </c><seealso marker="#type-type">type()</seealso> + <c>}</c>, the type of the table.</p> </item> </list> </desc> @@ -344,12 +345,12 @@ allowed:</p> <list type="bulleted"> <item> - <p><c>{access, <seealso marker="#type-access">access()</seealso>} - </c>, the access mode.</p> + <p><c>{access, </c><seealso marker="#type-access">access()</seealso> + <c>}</c>, the access mode.</p> </item> <item> - <p><c>{auto_save, <seealso marker="#type-auto_save"> - auto_save()</seealso>}</c>, the auto save interval.</p> + <p><c>{auto_save, </c><seealso marker="#type-auto_save"> + auto_save()</seealso><c>}</c>, the auto save interval.</p> </item> <item> <p><c>{bchunk_format, binary()}</c>, an opaque binary @@ -398,15 +399,40 @@ kept in RAM.</p> </item> <item> - <p><c>{safe_fixed,</c> SafeFixed<c>}</c>. If the table - is fixed, SafeFixed is a tuple <c>{FixedAtTime, [{Pid,RefCount}]}</c>. <c>FixedAtTime</c> is the time when + <p><c>{safe_fixed_monotonic_time, SafeFixed}</c>. If the table + is fixed, <c>SafeFixed</c> is a tuple <c>{FixedAtTime, [{Pid,RefCount}]}</c>. + <c>FixedAtTime</c> is the time when the table was first fixed, and <c>Pid</c> is the pid of the process that fixes the table <c>RefCount</c> times. There may be any number of processes in the list. If the table is not fixed, SafeFixed is the atom <c>false</c>.</p> + <p><c>FixedAtTime</c> will correspond to the result + returned by + <seealso marker="erts:erlang#monotonic_time/0">erlang:monotonic_time/0</seealso> + at the time of fixation. The usage of <c>safe_fixed_monotonic_time</c> is + <seealso marker="erts:time_correction#Time_Warp_Safe_Code">time warp + safe</seealso>.</p> + </item> + <item> + <p> + <c>{safe_fixed, SafeFixed}</c>. The same as + <c>{safe_fixed_monotonic_time, SafeFixed}</c> with the exception + of the format and value of <c>FixedAtTime</c>. + </p> + <p> + <c>FixedAtTime</c> will correspond to the result returned by + <seealso marker="erts:erlang#timestamp/0">erlang:timestamp/0</seealso> + at the time of fixation. Note that when the system is using + single or multi + <seealso marker="erts:time_correction#Time_Warp_Modes">time warp + modes</seealso> this might produce strange results. This + since the usage of <c>safe_fixed</c> is not + <seealso marker="erts:time_correction#Time_Warp_Safe_Code">time warp + safe</seealso>. Time warp safe code need to use + <c>safe_fixed_monotonic_time</c> instead.</p> </item> <item> - <p><c>{version, integer()</c>, the version of the format of + <p><c>{version, integer()}</c>, the version of the format of the table.</p> </item> </list> @@ -729,16 +755,16 @@ ok tuples where the following values are allowed:</p> <list type="bulleted"> <item> - <p><c>{access, <seealso marker="#type-access"> - access()</seealso>}</c>. It is possible to open + <p><c>{access, </c><seealso marker="#type-access"> + access()</seealso><c>}</c>. It is possible to open existing tables in read-only mode. A table which is opened in read-only mode is not subjected to the automatic file reparation algorithm if it is later opened after a crash. The default value is <c>read_write</c>.</p> </item> <item> - <p><c>{auto_save, <seealso marker="#type-auto_save"> - auto_save()</seealso>}</c>, the auto save + <p><c>{auto_save, </c><seealso marker="#type-auto_save"> + auto_save()</seealso><c>}</c>, the auto save interval. If the interval is an integer <c>Time</c>, the table is flushed to disk whenever it is not accessed for <c>Time</c> milliseconds. A table that has been flushed @@ -748,18 +774,18 @@ ok is 180000 (3 minutes).</p> </item> <item> - <p><c>{estimated_no_objects, <seealso marker="#type-no_slots"> - no_slots()</seealso>}</c>. Equivalent to the + <p><c>{estimated_no_objects, </c><seealso marker="#type-no_slots"> + no_slots()</seealso><c>}</c>. Equivalent to the <c>min_no_slots</c> option.</p> </item> <item> - <p><c>{file, <seealso marker="file#type-name"> - file:name()</seealso>}</c>, the name of the file to be + <p><c>{file, </c><seealso marker="file#type-name"> + file:name()</seealso><c>}</c>, the name of the file to be opened. The default value is the name of the table.</p> </item> <item> - <p><c>{max_no_slots, <seealso marker="#type-no_slots"> - no_slots()</seealso>}</c>, the maximum number + <p><c>{max_no_slots, </c><seealso marker="#type-no_slots"> + no_slots()</seealso><c>}</c>, the maximum number of slots that will be used. The default value as well as the maximal value is 32 M. Note that a higher value may increase the fragmentation of the table, and conversely, @@ -768,16 +794,16 @@ ok 9 tables.</p> </item> <item> - <p><c>{min_no_slots, <seealso marker="#type-no_slots"> - no_slots()</seealso>}</c>. Application + <p><c>{min_no_slots, </c><seealso marker="#type-no_slots"> + no_slots()</seealso><c>}</c>. Application performance can be enhanced with this flag by specifying, when the table is created, the estimated number of different keys that will be stored in the table. The default value as well as the minimum value is 256.</p> </item> <item> - <p><c>{keypos, <seealso marker="#type-keypos"> - keypos()</seealso>}</c>, the position of the + <p><c>{keypos, </c><seealso marker="#type-keypos"> + keypos()</seealso><c>}</c>, the position of the element of each object to be used as key. The default value is 1. The ability to explicitly state the key position is most convenient when we want to store Erlang @@ -814,12 +840,12 @@ ok already open.</p> </item> <item> - <p><c>{type, <seealso marker="#type-type">type()</seealso>}</c>, + <p><c>{type, </c><seealso marker="#type-type">type()</seealso><c>}</c>, the type of the table. The default value is <c>set</c>.</p> </item> <item> - <p><c>{version, <seealso marker="#type-version"> - version()</seealso>}</c>, the version of the format + <p><c>{version, </c><seealso marker="#type-version"> + version()</seealso><c>}</c>, the version of the format used for the table. The default value is <c>9</c>. Tables on the format used before OTP R8 can be created by giving the value <c>8</c>. A version 8 table can be converted to @@ -1035,8 +1061,8 @@ ok specification that matches all objects.</p> </item> <item> - <p><c>{select, <seealso marker="#type-match_spec"> - match_spec()}</seealso></c>. As for <c>select</c> + <p><c>{select, </c><seealso marker="#type-match_spec"> + match_spec()</seealso><c>}</c>. As for <c>select</c> the table is traversed by calling <c>dets:select/3</c> and <c>dets:select/1</c>. The difference is that the match specification is explicitly given. This is how to diff --git a/lib/stdlib/doc/src/dict.xml b/lib/stdlib/doc/src/dict.xml index 0771682a25..20bab99a9c 100644 --- a/lib/stdlib/doc/src/dict.xml +++ b/lib/stdlib/doc/src/dict.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2014</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -46,9 +47,6 @@ </datatype> <datatype> <name name="dict" n_vars="0"/> - <desc> - <p><c>dict()</c> is equivalent to <c>dict(term(), term())</c>.</p> - </desc> </datatype> </datatypes> <funcs> diff --git a/lib/stdlib/doc/src/digraph.xml b/lib/stdlib/doc/src/digraph.xml index 9b9b48584b..16dd789caf 100644 --- a/lib/stdlib/doc/src/digraph.xml +++ b/lib/stdlib/doc/src/digraph.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2014</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -102,13 +103,15 @@ <desc><p>A digraph as returned by <c>new/0,1</c>.</p></desc> </datatype> <datatype> - <name><marker id="type-edge">edge()</marker></name> + <name>edge()</name> + <desc><p><marker id="type-edge"/></p></desc> </datatype> <datatype> <name name="label"/> </datatype> <datatype> - <name><marker id="type-vertex">vertex()</marker></name> + <name>vertex()</name> + <desc><p><marker id="type-vertex"/></p></desc> </datatype> </datatypes> <funcs> diff --git a/lib/stdlib/doc/src/digraph_utils.xml b/lib/stdlib/doc/src/digraph_utils.xml index ef6f9d8611..9bddee546f 100644 --- a/lib/stdlib/doc/src/digraph_utils.xml +++ b/lib/stdlib/doc/src/digraph_utils.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2000</year><year>2013</year> + <year>2000</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -121,8 +122,9 @@ <datatypes> <datatype> - <name><marker id="type-digraph">digraph()</marker></name> - <desc><p>A digraph as returned by <c>digraph:new/0,1</c>.</p></desc> + <name>digraph()</name> + <desc><p><marker id="type-digraph"/> + A digraph as returned by <c>digraph:new/0,1</c>.</p></desc> </datatype> </datatypes> <funcs> diff --git a/lib/stdlib/doc/src/epp.xml b/lib/stdlib/doc/src/epp.xml index 452341f7d2..ac87f9c2b6 100644 --- a/lib/stdlib/doc/src/epp.xml +++ b/lib/stdlib/doc/src/epp.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2014</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -38,7 +39,7 @@ by <c>compile</c> to preprocess macros and include files before the actual parsing takes place.</p> <p>The Erlang source file <marker - id="encoding"><em>encoding</em></marker> is selected by a + id="encoding"/><em>encoding</em> is selected by a comment in one of the first two lines of the source file. The first string that matches the regular expression <c>coding\s*[:=]\s*([-a-zA-Z0-9])+</c> selects the encoding. If @@ -101,6 +102,7 @@ <func> <name name="parse_erl_form" arity="1"/> <fsummary>Return the next Erlang form from the opened Erlang source file</fsummary> + <type name="warning_info"/> <desc> <p>Returns the next Erlang form from the opened Erlang source file. The tuple <c>{eof, <anno>Line</anno>}</c> is returned at end-of-file. The first diff --git a/lib/stdlib/doc/src/erl_anno.xml b/lib/stdlib/doc/src/erl_anno.xml new file mode 100644 index 0000000000..ddc8b8c765 --- /dev/null +++ b/lib/stdlib/doc/src/erl_anno.xml @@ -0,0 +1,309 @@ +<?xml version="1.0" encoding="utf-8" ?> +<!DOCTYPE erlref SYSTEM "erlref.dtd"> + +<erlref> + <header> + <copyright> + <year>2015</year> + <year>2015</year> + <holder>Ericsson AB, All Rights Reserved</holder> + </copyright> + <legalnotice> + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + The Initial Developer of the Original Code is Ericsson AB. + </legalnotice> + + <title>erl_anno</title> + <prepared>Hans Bolinder</prepared> + <responsible>Kenneth Lundin</responsible> + <docno>1</docno> + <approved></approved> + <checked></checked> + <date>2015-02-26</date> + <rev>A</rev> + <file>erl_anno.xml</file> + </header> + <module>erl_anno</module> + + <modulesummary> + Abstract Datatype for the Annotations of the Erlang Compiler + </modulesummary> + + <description> + <p>This module implements an abstract type that is used by the + Erlang Compiler and its helper modules for holding data such as + column, line number, and text. The data type is a collection of + <marker id="annotations"/><em>annotations</em> as + described in the following.</p> + <p>The Erlang Token Scanner returns tokens with a subset of + the following annotations, depending on the options:</p> + <taglist> + <tag><c>column</c></tag> + <item><p>The column where the token begins.</p></item> + <tag><c>location</c></tag> + <item><p>The line and column where the token begins, or + just the line if the column unknown.</p> + </item> + <tag><c>text</c></tag> + <item><p>The token's text.</p></item> + </taglist> + <p>From the above the following annotation is derived:</p> + <taglist> + <tag><c>line</c></tag> + <item><p>The line where the token begins.</p></item> + </taglist> + <p>Furthermore, the following annotations are supported by + this module, and used by various modules:</p> + <taglist> + <tag><c>file</c></tag> + <item><p>A filename.</p></item> + <tag><c>generated</c></tag> + <item><p>A Boolean indicating if the abstract code is + compiler generated. The Erlang Compiler does not emit warnings + for such code.</p> + </item> + <tag><c>record</c></tag> + <item><p>A Boolean indicating if the origin of the abstract + code is a record. Used by Dialyzer to assign types to tuple + elements.</p> + </item> + </taglist> + <p>The functions + <seealso marker="erl_scan#column/1">column()</seealso>, + <seealso marker="erl_scan#end_location/1">end_location()</seealso>, + <seealso marker="erl_scan#line/1">line()</seealso>, + <seealso marker="erl_scan#location/1">location()</seealso>, and + <seealso marker="erl_scan#text/1">text()</seealso> + in the <c>erl_scan</c> module can be used for inspecting + annotations in tokens.</p> + <p>The functions + <seealso marker="erl_parse#map_anno/2">map_anno()</seealso>, + <seealso marker="erl_parse#fold_anno/3">fold_anno()</seealso>, + <seealso marker="erl_parse#mapfold_anno/3">mapfold_anno()</seealso>, + <seealso marker="erl_parse#new_anno/1">new_anno()</seealso>, + <seealso marker="erl_parse#anno_from_term/1"> + anno_from_term()</seealso>, and + <seealso marker="erl_parse#anno_to_term/1"> + anno_to_term()</seealso> in the <c>erl_parse</c> module can be + used for manipulating annotations in abstract code. + </p> + </description> + + <datatypes> + <datatype> + <name>anno()</name> + <desc><p><marker id="type-anno"/>A collection of annotations.</p> + </desc> + </datatype> + <datatype> + <name name="anno_term"></name> + <desc> + <p>The term representing a collection of annotations. It is + either a <c>location()</c> or a list of key-value pairs.</p> + </desc> + </datatype> + <datatype> + <name name="column"></name> + </datatype> + <datatype> + <name name="line"></name> + <desc> + <p>To be changed to a non-negative integer in Erlang/OTP 19.0.</p> + </desc> + </datatype> + <datatype> + <name name="location"></name> + </datatype> + <datatype> + <name name="text"></name> + </datatype> + </datatypes> + + <funcs> + <func> + <name name="column" arity="1"/> + <fsummary>Return the column</fsummary> + <type name="column"></type> + <desc> + <p>Returns the column of the annotations <anno>Anno</anno>. + </p> + </desc> + </func> + <func> + <name name="end_location" arity="1"/> + <fsummary>Return the end location of the text</fsummary> + <type name="location"></type> + <desc> + <p>Returns the end location of the text of the + annotations <anno>Anno</anno>. If there is no text, + <c>undefined</c> is returned. + </p> + </desc> + </func> + <func> + <name name="file" arity="1"/> + <fsummary>Return the filename</fsummary> + <type name="filename"></type> + <desc> + <p>Returns the filename of the annotations <anno>Anno</anno>. + If there is no filename, <c>undefined</c> is returned. + </p> + </desc> + </func> + <func> + <name name="from_term" arity="1"/> + <fsummary>Return annotations given a term</fsummary> + <desc> + <p>Returns annotations with the representation <anno>Term</anno>. + </p> + <!-- + <p>Although it is possible to create new annotations by calling + <c>from_term/1</c>, the intention is that one should not do + so - the proper way to create annotations is to call + <c>new/1</c> and then modify the annotations + by calling the <c>set_*</c> functions.</p> + --> + <p>See also <seealso marker="#to_term/1">to_term()</seealso>. + </p> + </desc> + </func> + <func> + <name name="generated" arity="1"/> + <fsummary>Return the generated Boolean</fsummary> + <type name="generated"></type> + <desc> + <p>Returns <c>true</c> if the annotations <anno>Anno</anno> + has been marked as generated. The default is to return + <c>false</c>. + </p> + </desc> + </func> + <func> + <name name="is_anno" arity="1"/> + <fsummary>Test for a collection of annotations</fsummary> + <desc> + <p>Returns <c>true</c> if <anno>Term</anno> is a collection of + annotations, <c>false</c> otherwise.</p> + </desc> + </func> + <func> + <name name="line" arity="1"/> + <fsummary>Return the line</fsummary> + <type name="line"></type> + <desc> + <p>Returns the line of the annotations <anno>Anno</anno>. + </p> + </desc> + </func> + <func> + <name name="location" arity="1"/> + <fsummary>Return the location</fsummary> + <type name="location"></type> + <desc> + <p>Returns the location of the annotations <anno>Anno</anno>. + </p> + </desc> + </func> + <func> + <name name="new" arity="1"/> + <fsummary>Create a new collection of annotations</fsummary> + <type name="location"></type> + <desc> + <p>Creates a new collection of annotations given a location.</p> + </desc> + </func> + <func> + <name name="set_file" arity="2"/> + <fsummary>Modify the filename</fsummary> + <type name="filename"></type> + <desc> + <p>Modifies the filename of the annotations <anno>Anno</anno>. + </p> + </desc> + </func> + <func> + <name name="set_generated" arity="2"/> + <fsummary>Modify the generated marker</fsummary> + <type name="generated"></type> + <desc> + <p>Modifies the generated marker of the annotations + <anno>Anno</anno>. + </p> + </desc> + </func> + <func> + <name name="set_line" arity="2"/> + <fsummary>Modify the line</fsummary> + <type name="line"></type> + <desc> + <p>Modifies the line of the annotations <anno>Anno</anno>. + </p> + </desc> + </func> + <func> + <name name="set_location" arity="2"/> + <fsummary>Modify the location</fsummary> + <type name="location"></type> + <desc> + <p>Modifies the location of the annotations <anno>Anno</anno>. + </p> + </desc> + </func> + <func> + <name name="set_record" arity="2"/> + <fsummary>Modify the record marker</fsummary> + <type name="record"></type> + <desc> + <p>Modifies the record marker of the annotations <anno>Anno</anno>. + </p> + </desc> + </func> + <func> + <name name="set_text" arity="2"/> + <fsummary>Modify the text</fsummary> + <type name="text"></type> + <desc> + <p>Modifies the text of the annotations <anno>Anno</anno>. + </p> + </desc> + </func> + <func> + <name name="text" arity="1"/> + <fsummary>Return the text</fsummary> + <type name="text"></type> + <desc> + <p>Returns the text of the annotations <anno>Anno</anno>. + If there is no text, <c>undefined</c> is returned. + </p> + </desc> + </func> + <func> + <name name="to_term" arity="1"/> + <fsummary>Return the term representing a collection of + annotations</fsummary> + <desc> + <p>Returns the term representing the annotations <anno>Anno</anno>. + </p> + <p>See also <seealso marker="#from_term/1">from_term()</seealso>. + </p> + </desc> + </func> + </funcs> + <section> + <title>See Also</title> + <p><seealso marker="erl_scan">erl_scan(3)</seealso>, + <seealso marker="erl_parse">erl_parse(3)</seealso> + </p> + </section> +</erlref> diff --git a/lib/stdlib/doc/src/erl_eval.xml b/lib/stdlib/doc/src/erl_eval.xml index b707dbcc02..d60b04b510 100644 --- a/lib/stdlib/doc/src/erl_eval.xml +++ b/lib/stdlib/doc/src/erl_eval.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/erl_expand_records.xml b/lib/stdlib/doc/src/erl_expand_records.xml index 1b5ee5de36..93e464c733 100644 --- a/lib/stdlib/doc/src/erl_expand_records.xml +++ b/lib/stdlib/doc/src/erl_expand_records.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>2005</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> diff --git a/lib/stdlib/doc/src/erl_id_trans.xml b/lib/stdlib/doc/src/erl_id_trans.xml index 0f7042f0c6..153bd4148e 100644 --- a/lib/stdlib/doc/src/erl_id_trans.xml +++ b/lib/stdlib/doc/src/erl_id_trans.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>1996</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> diff --git a/lib/stdlib/doc/src/erl_internal.xml b/lib/stdlib/doc/src/erl_internal.xml index 54e560f8b9..940f8c5b40 100644 --- a/lib/stdlib/doc/src/erl_internal.xml +++ b/lib/stdlib/doc/src/erl_internal.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>1996</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> diff --git a/lib/stdlib/doc/src/erl_lint.xml b/lib/stdlib/doc/src/erl_lint.xml index 1ca58baf9a..3747b0f3c3 100644 --- a/lib/stdlib/doc/src/erl_lint.xml +++ b/lib/stdlib/doc/src/erl_lint.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/erl_parse.xml b/lib/stdlib/doc/src/erl_parse.xml index cf0bff48cd..13be488c33 100644 --- a/lib/stdlib/doc/src/erl_parse.xml +++ b/lib/stdlib/doc/src/erl_parse.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2014</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -43,21 +44,33 @@ </description> <datatypes> <datatype> - <name name="abstract_clause"></name> - <desc><p>Parse tree for Erlang clause.</p> + <name>abstract_clause()</name> + <desc><p><marker id="type-abstract_clause"/> + Abstract form of an Erlang clause.</p> </desc> </datatype> <datatype> - <name name="abstract_expr"></name> - <desc><p>Parse tree for Erlang expression.</p> + <name>abstract_expr()</name> + <desc><p><marker id="type-abstract_expr"/> + Abstract form of an Erlang expression.</p> </desc> </datatype> <datatype> - <name name="abstract_form"></name> - <desc><p>Parse tree for Erlang form.</p> + <name>abstract_form()</name> + <desc><p><marker id="type-abstract_form"/> + Abstract form of an Erlang form.</p> </desc> </datatype> <datatype> + <name>abstract_type()</name> + <desc><p><marker id="type-abstract_type"/> + Abstract form of an Erlang type.</p> + </desc> + </datatype> + <datatype> + <name name="erl_parse_tree"></name> + </datatype> + <datatype> <name name="error_description"></name> </datatype> <datatype> @@ -173,13 +186,13 @@ </func> <func> <name name="abstract" arity="2"/> - <type name="encoding_func"/> <fsummary>Convert an Erlang term into an abstract form</fsummary> + <type name="encoding_func"/> <desc> <p>Converts the Erlang data structure <c><anno>Data</anno></c> into an abstract form of type <c><anno>AbsTerm</anno></c>.</p> <p>The <c><anno>Line</anno></c> option is the line that will - be assigned to each node of the abstract form.</p> + be assigned to each node of <c><anno>AbsTerm</anno></c>.</p> <p>The <c><anno>Encoding</anno></c> option is used for selecting which integer lists will be considered as strings. The default is to use the encoding returned by @@ -192,6 +205,111 @@ considered a string.</p> </desc> </func> + <func> + <name name="map_anno" arity="2"/> + <fsummary> + Map a function over the annotations of a <c>erl_parse</c> tree + </fsummary> + <desc> + <p>Modifies the <c>erl_parse</c> tree <c><anno>Abstr</anno></c> + by applying <c><anno>Fun</anno></c> on each collection of + annotations of the nodes of the <c>erl_parse</c> tree. The + <c>erl_parse</c> tree is traversed in a depth-first, + left-to-right, fashion. + </p> + </desc> + </func> + <func> + <name name="fold_anno" arity="3"/> + <fsummary> + Fold a function over the annotations of a <c>erl_parse</c> tree + </fsummary> + <desc> + <p>Updates an accumulator by applying <c><anno>Fun</anno></c> on + each collection of annotations of the <c>erl_parse</c> tree + <c><anno>Abstr</anno></c>. The first call to + <c><anno>Fun</anno></c> has <c><anno>AccIn</anno></c> as + argument, and the returned accumulator + <c><anno>AccOut</anno></c> is passed to the next call, and + so on. The final value of the accumulator is returned. The + <c>erl_parse</c> tree is traversed in a depth-first, left-to-right, + fashion. + </p> + </desc> + </func> + <func> + <name name="mapfold_anno" arity="3"/> + <fsummary> + Map and fold a function over the annotations of a + <c>erl_parse</c> tree + </fsummary> + <desc> + <p>Modifies the <c>erl_parse</c> tree <c><anno>Abstr</anno></c> + by applying <c><anno>Fun</anno></c> on each collection of + annotations of the nodes of the <c>erl_parse</c> tree, while + at the same time updating an accumulator. The first call to + <c><anno>Fun</anno></c> has <c><anno>AccIn</anno></c> as + second argument, and the returned accumulator + <c><anno>AccOut</anno></c> is passed to the next call, and + so on. The modified <c>erl_parse</c> tree as well as the the + final value of the accumulator are returned. The + <c>erl_parse</c> tree is traversed in a depth-first, + left-to-right, fashion. + </p> + </desc> + </func> + <func> + <name name="new_anno" arity="1"/> + <fsummary> + Create new annotations + </fsummary> + <desc> + <p>Assumes that <c><anno>Term</anno></c> is a term with the same + structure as a <c>erl_parse</c> tree, but with <seealso + marker="erl_anno#type-location">locations</seealso> where a + <c>erl_parse</c> tree has collections of annotations. + Returns a <c>erl_parse</c> tree where each location <c>L</c> + has been replaced by the value returned by <seealso + marker="erl_anno#new/1"><c>erl_anno:new(L)</c></seealso>. + The term <c><anno>Term</anno></c> is traversed in a + depth-first, left-to-right, fashion. + </p> + </desc> + </func> + <func> + <name name="anno_from_term" arity="1"/> + <fsummary> + Return annotations as terms + </fsummary> + <desc> + <p>Assumes that <c><anno>Term</anno></c> is a term with the same + structure as a <c>erl_parse</c> tree, but with terms, + <c>T</c> say, where a <c>erl_parse</c> tree has collections + of annotations. Returns a <c>erl_parse</c> tree where each + term <c>T</c> has been replaced by the value returned by + <seealso marker="erl_anno#from_term/1"> + <c>erl_anno:from_term(T)</c></seealso>. The term + <c><anno>Term</anno></c> is traversed in a depth-first, + left-to-right, fashion. + </p> + </desc> + </func> + <func> + <name name="anno_to_term" arity="1"/> + <fsummary> + Return the representation of annotations + </fsummary> + <desc> + <p>Returns a term where each collection of annotations + <c>Anno</c> of the nodes of the <c>erl_parse</c> tree + <c><anno>Abstr</anno></c> has been replaced by the term + returned by <seealso marker="erl_anno#to_term/1"> + <c>erl_anno:to_term(Anno)</c></seealso>. The + <c>erl_parse</c> tree is traversed in a depth-first, + left-to-right, fashion. + </p> + </desc> + </func> </funcs> <section> @@ -211,8 +329,9 @@ <section> <title>See Also</title> <p><seealso marker="io">io(3)</seealso>, - <seealso marker="erl_scan">erl_scan(3)</seealso>, - ERTS User's Guide</p> + <seealso marker="erl_anno">erl_anno(3)</seealso>, + <seealso marker="erl_scan">erl_scan(3)</seealso>, + <seealso marker="erts:absform">ERTS User's Guide</seealso></p> </section> </erlref> diff --git a/lib/stdlib/doc/src/erl_pp.xml b/lib/stdlib/doc/src/erl_pp.xml index 005c101973..e96fd576ec 100644 --- a/lib/stdlib/doc/src/erl_pp.xml +++ b/lib/stdlib/doc/src/erl_pp.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>1996</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> @@ -47,8 +48,8 @@ <datatype> <name name="hook_function"/> <desc> - <p>The optional argument <marker id="hook_function"> - <c>HookFunction</c></marker>, shown in the functions described below, + <p>The optional argument <marker id="hook_function"/> + <c>HookFunction</c>, shown in the functions described below, defines a function which is called when an unknown form occurs where there should be a valid expression.</p> diff --git a/lib/stdlib/doc/src/erl_scan.xml b/lib/stdlib/doc/src/erl_scan.xml index 855c8fc195..ee0d6b6033 100644 --- a/lib/stdlib/doc/src/erl_scan.xml +++ b/lib/stdlib/doc/src/erl_scan.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2015</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -39,39 +40,15 @@ </description> <datatypes> <datatype> - <name name="attribute_info"></name> - </datatype> - <datatype> - <name name="attributes"></name> - </datatype> - <datatype> - <name name="attributes_data"></name> - </datatype> - <datatype> <name name="category"></name> </datatype> <datatype> - <name name="column"></name> - </datatype> - <datatype> <name name="error_description"></name> </datatype> <datatype> <name name="error_info"></name> </datatype> <datatype> - <name name="info_line"></name> - </datatype> - <datatype> - <name name="info_location"></name> - </datatype> - <datatype> - <name name="line"></name> - </datatype> - <datatype> - <name name="location"></name> - </datatype> - <datatype> <name name="option"></name> </datatype> <datatype> @@ -87,9 +64,6 @@ <name name="token"></name> </datatype> <datatype> - <name name="token_info"></name> - </datatype> - <datatype> <name name="tokens"></name> </datatype> <datatype> @@ -120,22 +94,24 @@ <c>string(<anno>String</anno>, <anno>StartLocation</anno>, [])</c>.</p> <p><c><anno>StartLocation</anno></c> indicates the initial location - when scanning starts. If <c><anno>StartLocation</anno></c> is a line - <c>attributes()</c> as well as <c><anno>EndLocation</anno></c> and + when scanning starts. If <c><anno>StartLocation</anno></c> is a line, + <c>Anno</c> as well as <c><anno>EndLocation</anno></c> and <c><anno>ErrorLocation</anno></c> will be lines. If <c><anno>StartLocation</anno></c> is a pair of a line and a column - <c>attributes()</c> takes the form of an opaque compound + <c>Anno</c> takes the form of an opaque compound data type, and <c><anno>EndLocation</anno></c> and <c><anno>ErrorLocation</anno></c> will be pairs of a line and a column. The <em>token - attributes</em> contain information about the column and the + annotations</em> contain information about the column and the line where the token begins, as well as the text of the token (if the <c>text</c> option is given), all of which can - be accessed by calling <seealso - marker="#token_info/1">token_info/1,2</seealso> or <seealso - marker="#attributes_info/1">attributes_info/1,2</seealso>.</p> + be accessed by calling + <seealso marker="#column/1">column/1</seealso>, + <seealso marker="#line/1">line/1</seealso>, + <seealso marker="#location/1">location/1</seealso>, and + <seealso marker="#text/1">text/1</seealso>.</p> <p>A <em>token</em> is a tuple containing information about - syntactic category, the token attributes, and the actual + syntactic category, the token annotations, and the actual terminal symbol. For punctuation characters (e.g. <c>;</c>, <c>|</c>) and reserved words, the category and the symbol coincide, and the token is represented by a two-tuple. @@ -167,7 +143,7 @@ <item><p>Short for <c>[return_comments, return_white_spaces]</c>.</p> </item> <tag><c>text</c></tag> - <item><p>Include the token's text in the token attributes. The + <item><p>Include the token's text in the token annotation. The text is the part of the input corresponding to the token.</p> </item> </taglist> @@ -176,10 +152,10 @@ <func> <name name="tokens" arity="3"/> <name name="tokens" arity="4"/> + <fsummary>Re-entrant scanner</fsummary> <type name="char_spec"/> <type name="return_cont"/> <type_desc name="return_cont">An opaque continuation</type_desc> - <fsummary>Re-entrant scanner</fsummary> <desc> <p>This is the re-entrant scanner which scans characters until a <em>dot</em> ('.' followed by a white space) or @@ -237,147 +213,67 @@ </desc> </func> <func> - <name name="token_info" arity="1"/> - <fsummary>Return information about a token</fsummary> + <name name="category" arity="1"/> + <fsummary>Return the category</fsummary> <desc> - <p>Returns a list containing information about the token - <c><anno>Token</anno></c>. The order of the - <c><anno>TokenInfoTuple</anno></c>s is not - defined. See <seealso - marker="#token_info/2">token_info/2</seealso> for - information about specific - <c><anno>TokenInfoTuple</anno></c>s.</p> - <p>Note that if <c>token_info(Token, TokenItem)</c> returns - <c>undefined</c> for some <c>TokenItem</c>, the - item is not included in <c><anno>TokenInfo</anno></c>.</p> + <p>Returns the category of <c><anno>Token</anno></c>. + </p> </desc> </func> <func> - <name name="token_info" arity="2" clause_i="1"/> - <name name="token_info" arity="2" clause_i="2"/> - <type name="token_item"/> - <type name="attribute_item"/> - <fsummary>Return information about a token</fsummary> + <name name="symbol" arity="1"/> + <fsummary>Return the symbol</fsummary> <desc> - <p>Returns a list containing information about the token - <c><anno>Token</anno></c>. If one single - <c><anno>TokenItem</anno></c> is given the returned value is - the corresponding - <c>TokenInfoTuple</c>, or <c>undefined</c> if the - <c>TokenItem</c> has no value. If a list of - <c><anno>TokenItem</anno></c>s is given the result is a list of - <c><anno>TokenInfoTuple</anno></c>. The - <c><anno>TokenInfoTuple</anno></c>s will - appear with the corresponding <c><anno>TokenItem</anno></c>s in - the same order as the <c><anno>TokenItem</anno></c>s - appear in the list of <c>TokenItem</c>s. - <c><anno>TokenItem</anno></c>s with no value are not included - in the list of <c><anno>TokenInfoTuple</anno></c>.</p> - <p>The following <c><anno>TokenInfoTuple</anno></c>s with corresponding - <c><anno>TokenItem</anno></c>s are valid:</p> - <taglist> - <tag><c>{category, <seealso marker="#type-category"> - category()</seealso>}</c></tag> - <item><p>The category of the token.</p> - </item> - <tag><c>{column, <seealso marker="#type-column"> - column()</seealso>}</c></tag> - <item><p>The column where the token begins.</p> - </item> - <tag><c>{length, integer() > 0}</c></tag> - <item><p>The length of the token's text.</p> - </item> - <tag><c>{line, <seealso marker="#type-line"> - line()</seealso>}</c></tag> - <item><p>The line where the token begins.</p> - </item> - <tag><c>{location, <seealso marker="#type-location"> - location()</seealso>}</c></tag> - <item><p>The line and column where the token begins, or - just the line if the column unknown.</p> - </item> - <tag><c>{symbol, <seealso marker="#type-symbol"> - symbol()</seealso>}</c></tag> - <item><p>The token's symbol.</p> - </item> - <tag><c>{text, string()}</c></tag> - <item><p>The token's text.</p> - </item> - </taglist> + <p>Returns the symbol of <c><anno>Token</anno></c>. + </p> </desc> </func> <func> - <name name="attributes_info" arity="1"/> - <fsummary>Return information about token attributes</fsummary> + <name name="column" arity="1"/> + <fsummary>Return the column</fsummary> <desc> - <p>Returns a list containing information about the token - attributes <c><anno>Attributes</anno></c>. The order of the - <c><anno>AttributeInfoTuple</anno></c>s is not defined. - See <seealso - marker="#attributes_info/2">attributes_info/2</seealso> for - information about specific - <c><anno>AttributeInfoTuple</anno></c>s.</p> - <p>Note that if <c>attributes_info(Token, AttributeItem)</c> - returns <c>undefined</c> for some <c>AttributeItem</c> in - the list above, the item is not included in - <c><anno>AttributesInfo</anno></c>.</p> + <p>Returns the column of <c><anno>Token</anno></c>'s + collection of annotations. + </p> </desc> </func> <func> - <name name="attributes_info" arity="2" clause_i="1"/> - <name name="attributes_info" arity="2" clause_i="2"/> - <fsummary>Return information about a token attributes</fsummary> - <type name="attribute_item"/> + <name name="end_location" arity="1"/> + <fsummary>Return the end location of the text</fsummary> <desc> - <p>Returns a list containing information about the token - attributes <c><anno>Attributes</anno></c>. If one single - <c><anno>AttributeItem</anno></c> is given the returned value is the - corresponding <c><anno>AttributeInfoTuple</anno></c>, - or <c>undefined</c> if the <c><anno>AttributeItem</anno></c> - has no value. If a list of <c><anno>AttributeItem</anno></c> - is given the result is a list of - <c><anno>AttributeInfoTuple</anno></c>. - The <c><anno>AttributeInfoTuple</anno></c>s - will appear with the corresponding <c><anno>AttributeItem</anno></c>s - in the same order as the <c><anno>AttributeItem</anno></c>s - appear in the list of <c><anno>AttributeItem</anno></c>s. - <c><anno>AttributeItem</anno></c>s with no - value are not included in the list of - <c><anno>AttributeInfoTuple</anno></c>.</p> - <p>The following <c><anno>AttributeInfoTuple</anno></c>s with - corresponding <c><anno>AttributeItem</anno></c>s are valid:</p> - <taglist> - <tag><c>{column, <seealso marker="#type-column"> - column()</seealso>}</c></tag> - <item><p>The column where the token begins.</p> - </item> - <tag><c>{length, integer() > 0}</c></tag> - <item><p>The length of the token's text.</p> - </item> - <tag><c>{line, <seealso marker="#type-line"> - line()</seealso>}</c></tag> - <item><p>The line where the token begins.</p> - </item> - <tag><c>{location, <seealso marker="#type-location"> - location()</seealso>}</c></tag> - <item><p>The line and column where the token begins, or - just the line if the column unknown.</p> - </item> - <tag><c>{text, string()}</c></tag> - <item><p>The token's text.</p> - </item> - </taglist> + <p>Returns the end location of the text of + <c><anno>Token</anno></c>'s collection of annotations. If + there is no text, + <c>undefined</c> is returned. + </p> + </desc> + </func> + <func> + <name name="line" arity="1"/> + <fsummary>Return the line</fsummary> + <desc> + <p>Returns the line of <c><anno>Token</anno></c>'s collection + of annotations. + </p> + </desc> + </func> + <func> + <name name="location" arity="1"/> + <fsummary>Return the location</fsummary> + <desc> + <p>Returns the location of <c><anno>Token</anno></c>'s + collection of annotations. + </p> </desc> </func> <func> - <name name="set_attribute" arity="3"/> - <fsummary>Set a token attribute value</fsummary> + <name name="text" arity="1"/> + <fsummary>Return the text</fsummary> <desc> - <p>Sets the value of the <c>line</c> attribute of the token - attributes <c><anno>Attributes</anno></c>.</p> - <p>The <c><anno>SetAttributeFun</anno></c> is called with the value of - the <c>line</c> attribute, and is to return the new value of - the <c>line</c> attribute.</p> + <p>Returns the text of <c><anno>Token</anno></c>'s collection + of annotations. If there is no text, <c>undefined</c> is + returned. + </p> </desc> </func> <func> @@ -417,6 +313,7 @@ Module:format_error(ErrorDescriptor)</code> <section> <title>See Also</title> <p><seealso marker="io">io(3)</seealso>, - <seealso marker="erl_parse">erl_parse(3)</seealso></p> + <seealso marker="erl_anno">erl_anno(3)</seealso>, + <seealso marker="erl_parse">erl_parse(3)</seealso></p> </section> </erlref> diff --git a/lib/stdlib/doc/src/erl_tar.xml b/lib/stdlib/doc/src/erl_tar.xml index 95eefb8f9b..1f4a43f622 100644 --- a/lib/stdlib/doc/src/erl_tar.xml +++ b/lib/stdlib/doc/src/erl_tar.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2003</year><year>2013</year> + <year>2003</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -441,7 +442,7 @@ structure like a file descriptor, a sftp channel id or such. The different <c>Fun</c> clauses operates on that very term. </p> - <p>The fun clauses parameter lists are: + <p>The fun clauses parameter lists are:</p> <taglist> <tag><c>(write, {UserPrivate,DataToWrite})</c></tag> <item>Write the term <c>DataToWrite</c> using <c>UserPrivate</c></item> @@ -456,7 +457,6 @@ <tag><c></c></tag> <item></item> </taglist> - </p> <p>A complete <c>Fun</c> parameter for reading and writing on files using the <seealso marker="kernel:file">file module</seealso> could be: </p> diff --git a/lib/stdlib/doc/src/ets.xml b/lib/stdlib/doc/src/ets.xml index 3df24bf688..b32638f04d 100644 --- a/lib/stdlib/doc/src/ets.xml +++ b/lib/stdlib/doc/src/ets.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2014</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -122,8 +123,9 @@ <p>Some of the functions uses a <em>match specification</em>, match_spec. A brief explanation is given in <seealso marker="#select/2">select/2</seealso>. For a detailed - description, see the chapter "Match specifications in Erlang" in - <em>ERTS User's Guide</em>.</p> + description, see chapter + <seealso marker="erts:match_spec">Match Specifications in Erlang</seealso> + in <em>ERTS User's Guide</em>.</p> </section> <datatypes> @@ -131,9 +133,10 @@ <name name="access"/> </datatype> <datatype> - <name><marker id="type-continuation">continuation()</marker></name> + <name>continuation()</name> <desc> - <p>Opaque continuation used by <seealso marker="#select/1"> + <p><marker id="type-continuation"/> + Opaque continuation used by <seealso marker="#select/1"> <c>select/1,3</c></seealso>, <seealso marker="#select_reverse/1"> <c>select_reverse/1,3</c></seealso>, <seealso marker="#match/1"> @@ -447,15 +450,21 @@ Error: fun containing local Erlang function calls <item><c>{owner, pid()}</c> <br></br> The pid of the owner of the table.</item> - <item><c>{protection, <seealso marker="#type-access">access()</seealso>}</c> <br></br> + <item><c>{protection, </c><seealso marker="#type-access">access()</seealso><c>}</c> <br></br> The table access rights.</item> <item><c>{size, integer() >= 0</c> <br></br> The number of objects inserted in the table.</item> - <item><c>{type, <seealso marker="#type-type">type()</seealso>}</c> <br></br> + <item><c>{type, </c><seealso marker="#type-type">type()</seealso><c>}</c> <br></br> The table type.</item> + <item><c>{read_concurrency, boolean()}</c> <br></br> + + Indicates whether the table uses read_concurrency or not.</item> + <item><c>{write_concurrency, boolean()}</c> <br></br> + + Indicates whether the table uses write_concurrency or not.</item> </list> </desc> </func> @@ -480,14 +489,39 @@ Error: fun containing local Erlang function calls <item><c>Item=fixed, Value=boolean()</c> <br></br> Indicates if the table is fixed by any process or not.</item> - <item> - <p><c>Item=safe_fixed, Value={FirstFixed,Info}|false</c> <br></br> + <item><marker id="info_2_safe_fixed_monotonic_time"/> + <p><c>Item=safe_fixed|safe_fixed_monotonic_time, Value={FixationTime,Info}|false</c> <br></br> </p> - <p>If the table has been fixed using <c>safe_fixtable/2</c>, - the call returns a tuple where <c>FirstFixed</c> is the + <p>If the table has been fixed using + <seealso marker="#safe_fixtable/2"><c>safe_fixtable/2</c></seealso>, + the call returns a tuple where <c>FixationTime</c> is the time when the table was first fixed by a process, which may or may not be one of the processes it is fixed by right now.</p> + <p>The format and value of <c>FixationTime</c> depends on + <c>Item</c>:</p> + <taglist> + <tag><c>safe_fixed</c></tag> + <item><p><c>FixationTime</c> will correspond to the result + returned by + <seealso marker="erts:erlang#timestamp/0">erlang:timestamp/0</seealso> + at the time of fixation. Note that when the system is using + single or multi + <seealso marker="erts:time_correction#Time_Warp_Modes">time warp + modes</seealso> this might produce strange results. This + since the usage of <c>safe_fixed</c> is not + <seealso marker="erts:time_correction#Time_Warp_Safe_Code">time warp + safe</seealso>. Time warp safe code need to use + <c>safe_fixed_monotonic_time</c> instead.</p></item> + + <tag><c>safe_fixed_monotonic_time</c></tag> + <item><p><c>FixationTime</c> will correspond to the result + returned by + <seealso marker="erts:erlang#monotonic_time/0">erlang:monotonic_time/0</seealso> + at the time of fixation. The usage of <c>safe_fixed_monotonic_time</c> is + <seealso marker="erts:time_correction#Time_Warp_Safe_Code">time warp + safe</seealso>.</p></item> + </taglist> <p><c>Info</c> is a possibly empty lists of tuples <c>{Pid,RefCount}</c>, one tuple for every process the table is fixed by right now. <c>RefCount</c> is the value @@ -603,7 +637,7 @@ ets:is_compiled_ms(Broken).</code> <p>Returns the last key <c><anno>Key</anno></c> according to Erlang term order in the table <c>Tab</c> of the <c>ordered_set</c> type. If the table is of any other type, the function is synonymous - to <c>first/2</c>. If the table is empty, + to <c>first/1</c>. If the table is empty, <c>'$end_of_table'</c> is returned.</p> <p>Use <c>prev/2</c> to find preceding keys in the table.</p> </desc> @@ -909,7 +943,7 @@ ets:select(Table,MatchSpec),</code> </item> <item> <p><c>{keypos,<anno>Pos</anno>}</c> - Specfies which element in the stored tuples should be + Specifies which element in the stored tuples should be used as key. By default, it is the first element, i.e. <c><anno>Pos</anno>=1</c>. However, this is not always appropriate. In particular, we do not want the first element to be the @@ -1127,9 +1161,11 @@ clean_all_with_value(Tab,X,Key) -> table but never releases it, the memory used by the deleted objects will never be freed. The performance of operations on the table will also degrade significantly.</p> - <p>Use <c>info/2</c> to retrieve information about which - processes have fixed which tables. A system with a lot of - processes fixing tables may need a monitor which sends alarms + <p>Use + <seealso marker="#info_2_safe_fixed_monotonic_time"><c>info(Tab, + safe_fixed_monotonic_time)</c></seealso> to retrieve information + about which processes have fixed which tables. A system with a lot + of processes fixing tables may need a monitor which sends alarms when tables have been fixed for too long.</p> <p>Note that for tables of the <c>ordered_set</c> type, <c>safe_fixtable/2</c> is not necessary as calls to @@ -1429,7 +1465,9 @@ is_integer(X), is_integer(Y), X + Y < 4711]]></code> <p>Whenever the <c>extended_info</c> option is used, it results in a file not readable by versions of ets prior to that in stdlib-1.15.1</p> - + <p>The <c>sync</c> option, if set to <c>true</c>, ensures that + the content of the file is actually written to the disk before + <c>tab2file</c> returns. Default is <c>{sync, false}</c>.</p> </desc> </func> <func> @@ -1584,6 +1622,23 @@ true</pre> if the match_spec does not match the object <c><anno>Tuple</anno></c>.</p> <p>This is a useful debugging and test tool, especially when writing complicated <c>ets:select/2</c> calls.</p> + <p>See also: <seealso marker="erts:erlang#match_spec_test/3"> + erlang:match_spec_test/3</seealso>.</p> + </desc> + </func> + <func> + <name name="take" arity="2"/> + <fsummary>Return and remove all objects with a given key from an ETS + table.</fsummary> + <desc> + <p>Returns a list of all objects with the key <c><anno>Key</anno></c> in + the table <c><anno>Tab</anno></c> and removes.</p> + <p>The given <c><anno>Key</anno></c> is used to identify the object by + either <em>comparing equal</em> the key of an object in an + <c>ordered_set</c> table, or <em>matching</em> in other types of + tables (see <seealso marker="#lookup/2">lookup/2</seealso> and + <seealso marker="#new/2">new/2</seealso> for details on the + difference).</p> </desc> </func> <func> @@ -1597,15 +1652,19 @@ true</pre> </func> <func> <name name="update_counter" arity="3" clause_i="1"/> + <name name="update_counter" arity="4" clause_i="1"/> <name name="update_counter" arity="3" clause_i="2"/> + <name name="update_counter" arity="4" clause_i="2"/> <name name="update_counter" arity="3" clause_i="3"/> + <name name="update_counter" arity="4" clause_i="3"/> + <fsummary>Update a counter object in an ETS table.</fsummary> <type variable="Tab"/> <type variable="Key"/> <type variable="UpdateOp" name_i="1"/> <type variable="Pos" name_i="1"/> <type variable="Threshold" name_i="1"/> <type variable="SetValue" name_i="1"/> - <fsummary>Update a counter object in an ETS table.</fsummary> + <type variable="Default"/> <desc> <p>This function provides an efficient way to update one or more counters, without the hassle of having to look up an object, update @@ -1646,12 +1705,22 @@ true</pre> <seealso marker="#lookup/2">lookup/2</seealso> and <seealso marker="#new/2">new/2</seealso> for details on the difference).</p> + <p>If a default object <c><anno>Default</anno></c> is given, it is used + as the object to be updated if the key is missing from the table. The + value in place of the key is ignored and replaced by the proper key + value. The return value is as if the default object had not been used, + that is a single updated element or a list of them.</p> <p>The function will fail with reason <c>badarg</c> if:</p> <list type="bulleted"> <item>the table is not of type <c>set</c> or <c>ordered_set</c>,</item> - <item>no object with the right key exists,</item> + <item>no object with the right key exists and no default object were + supplied,</item> <item>the object has the wrong arity,</item> + <item>the default object arity is smaller than + <c><![CDATA[<keypos>]]></c></item> + <item>any field from the default object being updated is not an + integer</item> <item>the element to update is not an integer,</item> <item>the element to update is also the key, or,</item> <item>any of <c><anno>Pos</anno></c>, <c><anno>Incr</anno></c>, <c><anno>Threshold</anno></c> or @@ -1662,11 +1731,11 @@ true</pre> <func> <name name="update_element" arity="3" clause_i="1"/> <name name="update_element" arity="3" clause_i="2"/> + <fsummary>Updates the <c>Pos</c>:th element of the object with a given key in an ETS table.</fsummary> <type variable="Tab"/> <type variable="Key"/> <type variable="Value"/> <type variable="Pos"/> - <fsummary>Updates the <c>Pos</c>:th element of the object with a given key in an ETS table.</fsummary> <desc> <p>This function provides an efficient way to update one or more elements within an object, without the hassle of having to look up, diff --git a/lib/stdlib/doc/src/file_sorter.xml b/lib/stdlib/doc/src/file_sorter.xml index 16572df3c5..bc24f02a99 100644 --- a/lib/stdlib/doc/src/file_sorter.xml +++ b/lib/stdlib/doc/src/file_sorter.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2001</year><year>2013</year> + <year>2001</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -105,9 +106,9 @@ <c>file:get_cwd()</c> is used instead. The names of temporary files are derived from the Erlang nodename (<c>node()</c>), the process identifier of the current Erlang - emulator (<c>os:getpid()</c>), and a timestamp - (<c>erlang:now()</c>); a typical name would be - <c>fs_mynode@myhost_1763_1043_337000_266005.17</c>, where + emulator (<c>os:getpid()</c>), and a unique integer + (<c>erlang:unique_integer([positive])</c>); a typical name would be + <c>fs_mynode@myhost_1763_4711.17</c>, where <c>17</c> is a sequence number. Existing files will be overwritten. Temporary files are deleted unless some uncaught EXIT signal occurs. @@ -222,82 +223,82 @@ output(L) -> <datatypes> <datatype> - <name name="file_name"/><br/> + <name name="file_name"/> </datatype> <datatype> - <name name="file_names"/><br/> + <name name="file_names"/> </datatype> <datatype> - <name name="i_command"/><br/> + <name name="i_command"/> </datatype> <datatype> - <name name="i_reply"/><br/> + <name name="i_reply"/> </datatype> <datatype> - <name name="infun"/><br/> + <name name="infun"/> </datatype> <datatype> - <name name="input"/><br/> + <name name="input"/> </datatype> <datatype> - <name name="input_reply"/><br/> + <name name="input_reply"/> </datatype> <datatype> - <name name="o_command"/><br/> + <name name="o_command"/> </datatype> <datatype> - <name name="o_reply"/><br/> + <name name="o_reply"/> </datatype> <datatype> - <name name="object"/><br/> + <name name="object"/> </datatype> <datatype> - <name name="outfun"/><br/> + <name name="outfun"/> </datatype> <datatype> - <name name="output"/><br/> + <name name="output"/> </datatype> <datatype> - <name name="output_reply"/><br/> + <name name="output_reply"/> </datatype> <datatype> - <name name="value"/><br/> + <name name="value"/> </datatype> <datatype> - <name name="options"/><br/> + <name name="options"/> </datatype> <datatype> - <name name="option"/><br/> + <name name="option"/> </datatype> <datatype> - <name name="format"/><br/> + <name name="format"/> </datatype> <datatype> - <name name="format_fun"/><br/> + <name name="format_fun"/> </datatype> <datatype> - <name name="header_length"/><br/> + <name name="header_length"/> </datatype> <datatype> - <name name="key_pos"/><br/> + <name name="key_pos"/> </datatype> <datatype> - <name name="no_files"/><br/> + <name name="no_files"/> </datatype> <datatype> - <name name="order"/><br/> + <name name="order"/> </datatype> <datatype> - <name name="order_fun"/><br/> + <name name="order_fun"/> </datatype> <datatype> - <name name="size"/><br/> + <name name="size"/> </datatype> <datatype> - <name name="tmp_directory"/><br/> + <name name="tmp_directory"/> </datatype> <datatype> - <name name="reason"/><br/> + <name name="reason"/> </datatype> </datatypes> diff --git a/lib/stdlib/doc/src/filelib.xml b/lib/stdlib/doc/src/filelib.xml index 6fa39f97f6..3ad159a66d 100644 --- a/lib/stdlib/doc/src/filelib.xml +++ b/lib/stdlib/doc/src/filelib.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2003</year><year>2013</year> + <year>2003</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/filename.xml b/lib/stdlib/doc/src/filename.xml index 49b652f969..f284a7596c 100644 --- a/lib/stdlib/doc/src/filename.xml +++ b/lib/stdlib/doc/src/filename.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1997</year><year>2013</year> + <year>1997</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -46,7 +47,12 @@ <p>The module supports raw file names in the way that if a binary is present, or the file name cannot be interpreted according to the return value of <seealso marker="kernel:file#native_name_encoding/0">file:native_name_encoding/0</seealso>, a raw file name will also be returned. For example filename:join/1 provided with a path component being a binary (and also not being possible to interpret under the current native file name encoding) will result in a raw file name being returned (the join operation will have been performed of course). For more information about raw file names, see the <seealso marker="kernel:file">file</seealso> module.</p> </description> - + <datatypes> + <datatype> + <name name="basedir_type"/> + </datatype> + </datatypes> + <funcs> <func> <name name="absname" arity="1"/> @@ -101,6 +107,155 @@ </desc> </func> <func> + <name name="basedir" arity="2"/> + <fsummary>Equivalent to <c>basedir(<anno>Type</anno>,<anno>Application</anno>,#{})</c>.</fsummary> + <desc> + <p> + Equivalent to <seealso marker="#basedir-3"> + basedir(<anno>Type</anno>, <anno>Application</anno>, #{})</seealso>. + </p> + </desc> + </func> + <func> + <name name="basedir" arity="3"/> + <fsummary></fsummary> + <desc><marker id="basedir-3"/> + <p> + Returns a suitable path, or paths, for a given type. + If <c>os</c> is not set in <c><anno>Opts</anno></c> the function will default to + the native option, i.e. <c>'linux'</c>, <c>'darwin'</c> or <c>'windows'</c>, as understood + by <c>os:type/0</c>. Anything not recognized as <c>'darwin'</c> or <c>'windows'</c> is + interpreted as <c>'linux'</c>.</p> + <p> + The options <c>'author'</c> and <c>'version'</c> are only used with <c>'windows'</c> option mode. + </p> + <list type="bulleted"> + <item><c>user_cache</c> + <p>The path location is intended for transient data files on a local machine.</p> + <p> + On Linux: + Respects the os environment variable <c>XDG_CACHE_HOME</c>. + </p> + <pre> +1> <input>filename:basedir(user_cache, "my_application", #{os=>linux}).</input> +"/home/otptest/.cache/my_application"</pre> + On Darwin: <pre> +1> <input>filename:basedir(user_cache, "my_application", #{os=>darwin}).</input> +"/home/otptest/Library/Caches/my_application"</pre> + On Windows: <pre> +1> <input>filename:basedir(user_cache, "My App").</input> +"c:/Users/otptest/AppData/Local/My App/Cache" +2> <input>filename:basedir(user_cache, "My App").</input> +"c:/Users/otptest/AppData/Local/My App/Cache" +3> <input>filename:basedir(user_cache, "My App", #{author=>"Erlang"}).</input> +"c:/Users/otptest/AppData/Local/Erlang/My App/Cache" +4> <input>filename:basedir(user_cache, "My App", #{version=>"1.2"}).</input> +"c:/Users/otptest/AppData/Local/My App/1.2/Cache" +5> <input>filename:basedir(user_cache, "My App", #{author=>"Erlang",version=>"1.2"}).</input> +"c:/Users/otptest/AppData/Local/Erlang/My App/1.2/Cache"</pre> + </item> + <item><c>user_config</c> + <p> + The path location is intended for persistent configuration files. + </p> + <p> + On Linux: + Respects the os environment variable <c>XDG_CONFIG_HOME</c>. + </p> + <pre> +2> <input>filename:basedir(user_config, "my_application", #{os=>linux}).</input> +"/home/otptest/.config/my_application"</pre> + On Darwin:<pre> +2> <input>filename:basedir(user_config, "my_application", #{os=>darwin}).</input> +"/home/otptest/Library/Application Support/my_application"</pre> + On Windows:<pre> +1> <input>filename:basedir(user_config, "My App").</input> +"c:/Users/otptest/AppData/Roaming/My App" +2> <input>filename:basedir(user_config, "My App", #{author=>"Erlang", version=>"1.2"}).</input> +"c:/Users/otptest/AppData/Roaming/Erlang/My App/1.2"</pre> + </item> + <item><c>user_data</c> + <p> + The path location is intended for persistent data files. + </p> + <p> + On Linux: + Respects the os environment variable <c>XDG_DATA_HOME</c>. + </p> + <pre> +3> <input>filename:basedir(user_data, "my_application", #{os=>linux}).</input> +"/home/otptest/.local/my_application"</pre> + On Darwin:<pre> +3> <input>filename:basedir(user_data, "my_application", #{os=>darwin}).</input> +"/home/otptest/Library/Application Support/my_application"</pre> + On Windows:<pre> +8> <input>filename:basedir(user_data, "My App").</input> +"c:/Users/otptest/AppData/Local/My App" +9> <input>filename:basedir(user_data, "My App",#{author=>"Erlang",version=>"1.2"}).</input> +"c:/Users/otptest/AppData/Local/Erlang/My App/1.2"</pre> + </item> + <item><c>user_log</c> + <p>The path location is intended for transient log files on a local machine.</p> + <p> + On Linux: + Respects the os environment variable <c>XDG_CACHE_HOME</c>.</p> + <pre> +4> <input>filename:basedir(user_log, "my_application", #{os=>linux}).</input> +"/home/otptest/.cache/my_application/log"</pre> + On Darwin:<pre> +4> <input>filename:basedir(user_log, "my_application", #{os=>darwin}).</input> +"/home/otptest/Library/Caches/my_application"</pre> + On Windows:<pre> +12> <input>filename:basedir(user_log, "My App").</input> +"c:/Users/otptest/AppData/Local/My App/Logs" +13> <input>filename:basedir(user_log, "My App",#{author=>"Erlang",version=>"1.2"}).</input> +"c:/Users/otptest/AppData/Local/Erlang/My App/1.2/Logs"</pre> + </item> + <item><c>site_config</c><p> + On Linux: + Respects the os environment variable <c>XDG_CONFIG_DIRS</c>.</p> +<pre> +5> <input>filename:basedir(site_data, "my_application", #{os=>linux}).</input> +["/usr/local/share/my_application", + "/usr/share/my_application"] +6> <input>os:getenv("XDG_CONFIG_DIRS").</input> +"/etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg" +7> <input>filename:basedir(site_config, "my_application", #{os=>linux}).</input> +["/etc/xdg/xdg-ubuntu/my_application", + "/usr/share/upstart/xdg/my_application", + "/etc/xdg/my_application"] +8> <input>os:unsetenv("XDG_CONFIG_DIRS").</input> +true +9> <input>filename:basedir(site_config, "my_application", #{os=>linux}).</input> +["/etc/xdg/my_application"]</pre> + On Darwin:<pre> +5> <input>filename:basedir(site_config, "my_application", #{os=>darwin}).</input> +["/Library/Application Support/my_application"]</pre> + </item> + <item><c>site_data</c><p> + On Linux: + Respects the os environment variable <c>XDG_DATA_DIRS</c>.</p> + <pre> +10> <input>os:getenv("XDG_DATA_DIRS").</input> +"/usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/" +11> <input>filename:basedir(site_data, "my_application", #{os=>linux}).</input> +["/usr/share/ubuntu/my_application", + "/usr/share/gnome/my_application", + "/usr/local/share/my_application", + "/usr/share/my_application"] +12> <input>os:unsetenv("XDG_DATA_DIRS").</input> +true +13> <input>filename:basedir(site_data, "my_application", #{os=>linux}).</input> +["/usr/local/share/my_application", + "/usr/share/my_application"]</pre> + On Darwin:<pre> +5> <input>filename:basedir(site_data, "my_application", #{os=>darwin}).</input> +["/Library/Application Support/my_application"]</pre> + </item> + </list> + </desc> + </func> + <func> <name name="basename" arity="1"/> <fsummary>Return the last component of a filename</fsummary> <desc> @@ -213,7 +368,7 @@ <desc> <p>Converts <c><anno>Path</anno></c> to a form accepted by the command shell and native applications on the current platform. On Windows, - forward slashes is converted to backward slashes. On all + forward slashes are converted to backward slashes. On all platforms, the name is normalized as done by <c>join/1</c>.</p> <pre> 19> <input>filename:nativename("/usr/local/bin/").</input> % Unix diff --git a/lib/stdlib/doc/src/gb_sets.xml b/lib/stdlib/doc/src/gb_sets.xml index ea96c14472..84609a0f7c 100644 --- a/lib/stdlib/doc/src/gb_sets.xml +++ b/lib/stdlib/doc/src/gb_sets.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2001</year><year>2014</year> + <year>2001</year><year>2015</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -120,9 +121,6 @@ </datatype> <datatype> <name name="set" n_vars="0"/> - <desc> - <p><c>set()</c> is equivalent to <c>set(term())</c>.</p> - </desc> </datatype> <datatype> <name name="iter" n_vars="1"/> @@ -130,9 +128,6 @@ </datatype> <datatype> <name name="iter" n_vars="0"/> - <desc> - <p><c>iter()</c> is equivalent to <c>iter(term())</c>.</p> - </desc> </datatype> </datatypes> <funcs> @@ -306,6 +301,17 @@ </desc> </func> <func> + <name name="iterator_from" arity="2"/> + <fsummary>Return an iterator for a set starting from a specified element</fsummary> + <desc> + <p>Returns an iterator that can be used for traversing the + entries of <c><anno>Set</anno></c>; see <c>next/1</c>. + The difference as compared to the iterator returned by + <c>iterator/1</c> is that the first element greater than + or equal to <c><anno>Element</anno></c> is returned.</p> + </desc> + </func> + <func> <name name="largest" arity="1"/> <fsummary>Return largest element</fsummary> <desc> diff --git a/lib/stdlib/doc/src/gb_trees.xml b/lib/stdlib/doc/src/gb_trees.xml index b2f237e1d7..5d1f27c014 100644 --- a/lib/stdlib/doc/src/gb_trees.xml +++ b/lib/stdlib/doc/src/gb_trees.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2001</year><year>2014</year> + <year>2001</year><year>2015</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -64,9 +65,6 @@ </datatype> <datatype> <name name="tree" n_vars="0"/> - <desc> - <p><c>tree()</c> is equivalent to <c>tree(term(), term())</c>.</p> - </desc> </datatype> <datatype> <name name="iter" n_vars="2"/> @@ -74,9 +72,6 @@ </datatype> <datatype> <name name="iter" n_vars="0"/> - <desc> - <p><c>iter()</c> is equivalent to <c>iter(term(), term())</c>.</p> - </desc> </datatype> </datatypes> <funcs> @@ -183,6 +178,17 @@ </desc> </func> <func> + <name name="iterator_from" arity="2"/> + <fsummary>Return an iterator for a tree starting from specified key</fsummary> + <desc> + <p>Returns an iterator that can be used for traversing the + entries of <c><anno>Tree</anno></c>; see <c>next/1</c>. + The difference as compared to the iterator returned by + <c>iterator/1</c> is that the first key greater than + or equal to <c><anno>Key</anno></c> is returned.</p> + </desc> + </func> + <func> <name name="keys" arity="1"/> <fsummary>Return a list of the keys in a tree</fsummary> <desc> diff --git a/lib/stdlib/doc/src/gen_event.xml b/lib/stdlib/doc/src/gen_event.xml index b9dfff833e..b2c482d3ed 100644 --- a/lib/stdlib/doc/src/gen_event.xml +++ b/lib/stdlib/doc/src/gen_event.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -44,6 +45,7 @@ <pre> gen_event module Callback module ---------------- --------------- +gen_event:start gen_event:start_link -----> - gen_event:add_handler @@ -177,7 +179,7 @@ gen_event:stop -----> Module:terminate/2 <name>add_handler(EventMgrRef, Handler, Args) -> Result</name> <fsummary>Add an event handler to a generic event manager.</fsummary> <type> - <v>EventMgr = Name | {Name,Node} | {global,GlobalName} + <v>EventMgrRef = Name | {Name,Node} | {global,GlobalName} | {via,Module,ViaName} | pid()</v> <v> Name = Node = atom()</v> <v> GlobalName = ViaName = term()</v> @@ -223,7 +225,7 @@ gen_event:stop -----> Module:terminate/2 <name>add_sup_handler(EventMgrRef, Handler, Args) -> Result</name> <fsummary>Add a supervised event handler to a generic event manager.</fsummary> <type> - <v>EventMgr = Name | {Name,Node} | {global,GlobalName} + <v>EventMgrRef = Name | {Name,Node} | {global,GlobalName} | {via,Module,ViaName} | pid()</v> <v> Name = Node = atom()</v> <v> GlobalName = ViaName = term()</v> @@ -456,19 +458,37 @@ gen_event:stop -----> Module:terminate/2 </func> <func> <name>stop(EventMgrRef) -> ok</name> + <name>stop(EventMgrRef, Reason, Timeout) -> ok</name> <fsummary>Terminate a generic event manager.</fsummary> <type> <v>EventMgrRef = Name | {Name,Node} | {global,GlobalName} | {via,Module,ViaName} | pid()</v> <v>Name = Node = atom()</v> <v>GlobalName = ViaName = term()</v> + <v>Reason = term()</v> + <v>Timeout = int()>0 | infinity</v> </type> <desc> - <p>Terminates the event manager <c>EventMgrRef</c>. Before - terminating, the event manager will call - <c>Module:terminate(stop,...)</c> for each installed event - handler.</p> - <p>See <c>add_handler/3</c> for a description of the argument.</p> + <p>Orders the event manager <c>EventMgrRef</c> to exit with + the given <c>Reason</c> and waits for it to + terminate. Before terminating, the gen_event will call + <seealso marker="#Module:terminate/2">Module:terminate(stop,...)</seealso> + for each installed event handler.</p> + <p>The function returns <c>ok</c> if the event manager terminates + with the expected reason. Any other reason than <c>normal</c>, + <c>shutdown</c>, or <c>{shutdown,Term}</c> will cause an + error report to be issued using + <seealso marker="kernel:error_logger#format/2">error_logger:format/2</seealso>. + The default <c>Reason</c> is <c>normal</c>.</p> + <p><c>Timeout</c> is an integer greater than zero which + specifies how many milliseconds to wait for the event manager to + terminate, or the atom <c>infinity</c> to wait + indefinitely. The default value is <c>infinity</c>. If the + event manager has not terminated within the specified time, a + <c>timeout</c> exception is raised.</p> + <p>If the process does not exist, a <c>noproc</c> exception + is raised.</p> + <p>See <c>add_handler/3</c> for a description of <c>EventMgrRef</c>.</p> </desc> </func> </funcs> @@ -696,7 +716,7 @@ gen_event:stop -----> Module:terminate/2 the purposes described below.</p> </note> <p>This function is called by a gen_event process when:</p> - <list typed="bulleted"> + <list type="bulleted"> <item>One of <seealso marker="sys#get_status/1">sys:get_status/1,2</seealso> is invoked to get the gen_event status. <c>Opt</c> is set @@ -720,7 +740,7 @@ gen_event:stop -----> Module:terminate/2 customises the details of the current state of the event handler. Any term is allowed for <c>Status</c>. The gen_event module uses <c>Status</c> as follows:</p> - <list typed="bulleted"> + <list type="bulleted"> <item>When <c>sys:get_status/1,2</c> is called, gen_event ensures that its return value contains <c>Status</c> in place of the event handler's actual state term.</item> diff --git a/lib/stdlib/doc/src/gen_fsm.xml b/lib/stdlib/doc/src/gen_fsm.xml index 848d57f3e6..835e252704 100644 --- a/lib/stdlib/doc/src/gen_fsm.xml +++ b/lib/stdlib/doc/src/gen_fsm.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -30,12 +31,23 @@ <module>gen_fsm</module> <modulesummary>Generic Finite State Machine Behaviour</modulesummary> <description> + <note> + <p> + There is a new behaviour + <seealso marker="gen_statem"><c>gen_statem</c></seealso> + that is intended to replace <c>gen_fsm</c> for new code. + It has the same features and add some really useful. + This module will not be removed for the foreseeable future + to keep old state machine implementations running. + </p> + </note> <p>A behaviour module for implementing a finite state machine. A generic finite state machine process (gen_fsm) implemented using this module will have a standard set of interface functions and include functionality for tracing and error reporting. It will also fit into an OTP supervision tree. Refer to - <seealso marker="doc/design_principles:fsm">OTP Design Principles</seealso> for more information.</p> + <seealso marker="doc/design_principles:fsm">OTP Design Principles</seealso> for more information. + </p> <p>A gen_fsm assumes all specific parts to be located in a callback module exporting a pre-defined set of functions. The relationship between the behaviour functions and the callback functions can be @@ -43,8 +55,11 @@ <pre> gen_fsm module Callback module -------------- --------------- +gen_fsm:start gen_fsm:start_link -----> Module:init/1 +gen_fsm:stop -----> Module:terminate/3 + gen_fsm:send_event -----> Module:StateName/2 gen_fsm:send_all_state_event -----> Module:handle_event/3 @@ -187,6 +202,39 @@ gen_fsm:sync_send_all_state_event -----> Module:handle_sync_event/4 </desc> </func> <func> + <name>stop(FsmRef) -> ok</name> + <name>stop(FsmRef, Reason, Timeout) -> ok</name> + <fsummary>Synchronously stop a generic FSM.</fsummary> + <type> + <v>FsmRef = Name | {Name,Node} | {global,GlobalName} + | {via,Module,ViaName} | pid()</v> + <v> Node = atom()</v> + <v> GlobalName = ViaName = term()</v> + <v>Reason = term()</v> + <v>Timeout = int()>0 | infinity</v> + </type> + <desc> + <p>Orders a generic FSM to exit with the given <c>Reason</c> + and waits for it to terminate. The gen_fsm will call + <seealso marker="#Module:terminate/3">Module:terminate/3</seealso> + before exiting.</p> + <p>The function returns <c>ok</c> if the generic FSM terminates + with the expected reason. Any other reason than <c>normal</c>, + <c>shutdown</c>, or <c>{shutdown,Term}</c> will cause an + error report to be issued using + <seealso marker="kernel:error_logger#format/2">error_logger:format/2</seealso>. + The default <c>Reason</c> is <c>normal</c>.</p> + <p><c>Timeout</c> is an integer greater than zero which + specifies how many milliseconds to wait for the generic FSM + to terminate, or the atom <c>infinity</c> to wait + indefinitely. The default value is <c>infinity</c>. If the + generic FSM has not terminated within the specified time, a + <c>timeout</c> exception is raised.</p> + <p>If the process does not exist, a <c>noproc</c> exception + is raised.</p> + </desc> + </func> + <func> <name>send_event(FsmRef, Event) -> ok</name> <fsummary>Send an event asynchronously to a generic FSM.</fsummary> <type> @@ -302,11 +350,12 @@ gen_fsm:sync_send_all_state_event -----> Module:handle_sync_event/4 </desc> </func> <func> - <name>reply(Caller, Reply) -> true</name> + <name>reply(Caller, Reply) -> Result</name> <fsummary>Send a reply to a caller.</fsummary> <type> <v>Caller - see below</v> <v>Reply = term()</v> + <v>Result = term()</v> </type> <desc> <p>This function can be used by a gen_fsm to explicitly send a @@ -321,6 +370,8 @@ gen_fsm:sync_send_all_state_event -----> Module:handle_sync_event/4 which will be given back to the client as the return value of <c>sync_send_event/2,3</c> or <c>sync_send_all_state_event/2,3</c>.</p> + <p>The return value <c>Result</c> is not further defined, and + should always be ignored.</p> </desc> </func> <func> @@ -528,7 +579,8 @@ gen_fsm:sync_send_all_state_event -----> Module:handle_sync_event/4 <c>Module:init/1</c> for a description of <c>Timeout</c> and <c>hibernate</c>.</p> <p>If the function returns <c>{stop,Reason,NewStateData}</c>, the gen_fsm will call - <c>Module:terminate(Reason,NewStateData)</c> and terminate.</p> + <c>Module:terminate(Reason,StateName,NewStateData)</c> and + terminate.</p> </desc> </func> <func> @@ -614,7 +666,8 @@ gen_fsm:sync_send_all_state_event -----> Module:handle_sync_event/4 <c>{stop,Reason,NewStateData}</c>, any reply to <c>From</c> must be given explicitly using <c>gen_fsm:reply/2</c>. The gen_fsm will then call - <c>Module:terminate(Reason,NewStateData)</c> and terminate.</p> + <c>Module:terminate(Reason,StateName,NewStateData)</c> and + terminate.</p> </desc> </func> <func> @@ -763,7 +816,7 @@ gen_fsm:sync_send_all_state_event -----> Module:handle_sync_event/4 module state data.</p> </note> <p>This function is called by a gen_fsm process when:</p> - <list typed="bulleted"> + <list type="bulleted"> <item>One of <seealso marker="sys#get_status/1">sys:get_status/1,2</seealso> is invoked to get the gen_fsm status. <c>Opt</c> is set to @@ -806,6 +859,7 @@ gen_fsm:sync_send_all_state_event -----> Module:handle_sync_event/4 <title>SEE ALSO</title> <p><seealso marker="gen_event">gen_event(3)</seealso>, <seealso marker="gen_server">gen_server(3)</seealso>, + <seealso marker="gen_statem">gen_statem(3)</seealso>, <seealso marker="supervisor">supervisor(3)</seealso>, <seealso marker="proc_lib">proc_lib(3)</seealso>, <seealso marker="sys">sys(3)</seealso></p> diff --git a/lib/stdlib/doc/src/gen_server.xml b/lib/stdlib/doc/src/gen_server.xml index 62c0394479..10dc978afc 100644 --- a/lib/stdlib/doc/src/gen_server.xml +++ b/lib/stdlib/doc/src/gen_server.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -43,8 +44,11 @@ <pre> gen_server module Callback module ----------------- --------------- +gen_server:start gen_server:start_link -----> Module:init/1 +gen_server:stop -----> Module:terminate/2 + gen_server:call gen_server:multi_call -----> Module:handle_call/3 @@ -184,6 +188,40 @@ gen_server:abcast -----> Module:handle_cast/2 </desc> </func> <func> + <name>stop(ServerRef) -> ok</name> + <name>stop(ServerRef, Reason, Timeout) -> ok</name> + <fsummary>Synchronously stop a generic server.</fsummary> + <type> + <v>ServerRef = Name | {Name,Node} | {global,GlobalName} + | {via,Module,ViaName} | pid()</v> + <v> Node = atom()</v> + <v> GlobalName = ViaName = term()</v> + <v>Reason = term()</v> + <v>Timeout = int()>0 | infinity</v> + </type> + <desc> + <p>Orders a generic server to exit with the + given <c>Reason</c> and waits for it to terminate. The + gen_server will call + <seealso marker="#Module:terminate/2">Module:terminate/2</seealso> + before exiting.</p> + <p>The function returns <c>ok</c> if the server terminates + with the expected reason. Any other reason than <c>normal</c>, + <c>shutdown</c>, or <c>{shutdown,Term}</c> will cause an + error report to be issued using + <seealso marker="kernel:error_logger#format/2">error_logger:format/2</seealso>. + The default <c>Reason</c> is <c>normal</c>.</p> + <p><c>Timeout</c> is an integer greater than zero which + specifies how many milliseconds to wait for the server to + terminate, or the atom <c>infinity</c> to wait + indefinitely. The default value is <c>infinity</c>. If the + server has not terminated within the specified time, a + <c>timeout</c> exception is raised.</p> + <p>If the process does not exist, a <c>noproc</c> exception + is raised.</p> + </desc> + </func> + <func> <name>call(ServerRef, Request) -> Reply</name> <name>call(ServerRef, Request, Timeout) -> Reply</name> <fsummary>Make a synchronous call to a generic server.</fsummary> @@ -284,7 +322,7 @@ gen_server:abcast -----> Module:handle_cast/2 which may be infinity.</p> <p>This problem does not exist if all nodes are Erlang nodes.</p> </warning> - <p>To avoid that late answers (after the timeout) pollutes + <p>To prevent late answers (after the timeout) from polluting the caller's message queue, a middleman process is used to do the actual calls. Late answers will then be discarded when they arrive to a terminated process.</p> @@ -635,7 +673,7 @@ gen_server:abcast -----> Module:handle_cast/2 module state.</p> </note> <p>This function is called by a gen_server process when:</p> - <list typed="bulleted"> + <list type="bulleted"> <item>One of <seealso marker="sys#get_status/1">sys:get_status/1,2</seealso> is invoked to get the gen_server status. <c>Opt</c> is set @@ -677,6 +715,7 @@ gen_server:abcast -----> Module:handle_cast/2 <title>SEE ALSO</title> <p><seealso marker="gen_event">gen_event(3)</seealso>, <seealso marker="gen_fsm">gen_fsm(3)</seealso>, + <seealso marker="gen_statem">gen_statem(3)</seealso>, <seealso marker="supervisor">supervisor(3)</seealso>, <seealso marker="proc_lib">proc_lib(3)</seealso>, <seealso marker="sys">sys(3)</seealso></p> diff --git a/lib/stdlib/doc/src/gen_statem.xml b/lib/stdlib/doc/src/gen_statem.xml new file mode 100644 index 0000000000..0e7d6e53e9 --- /dev/null +++ b/lib/stdlib/doc/src/gen_statem.xml @@ -0,0 +1,1671 @@ +<?xml version="1.0" encoding="utf-8" ?> +<!DOCTYPE erlref SYSTEM "erlref.dtd"> + +<erlref> + <header> + <copyright> + <year>2016</year> + <holder>Ericsson AB. All Rights Reserved.</holder> + </copyright> + <legalnotice> + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + </legalnotice> + + <title>gen_statem</title> + <prepared></prepared> + <docno></docno> + <date></date> + <rev></rev> + </header> + <module>gen_statem</module> + <modulesummary>Generic state machine behavior.</modulesummary> + <description> + <p> + This behavior module provides a state machine. Two + <seealso marker="#type-callback_mode"><em>callback modes</em></seealso> + are supported: + </p> + <list type="bulleted"> + <item> + <p>One for finite-state machines + (<seealso marker="gen_fsm"><c>gen_fsm</c></seealso> like), + which requires the state to be an atom and uses that state as + the name of the current callback function + </p> + </item> + <item> + <p>One without restriction on the state data type + that uses one callback function for all states + </p> + </item> + </list> + <note> + <p> + This is a new behavior in Erlang/OTP 19.0. + It has been thoroughly reviewed, is stable enough + to be used by at least two heavy OTP applications, and is here to stay. + Depending on user feedback, we do not expect + but can find it necessary to make minor + not backward compatible changes into Erlang/OTP 20.0. + </p> + </note> + <p> + The <c>gen_statem</c> behavior is intended to replace + <seealso marker="gen_fsm"><c>gen_fsm</c></seealso> for new code. + It has the same features and adds some really useful: + </p> + <list type="bulleted"> + <item>State code is gathered.</item> + <item>The state can be any term.</item> + <item>Events can be postponed.</item> + <item>Events can be self-generated.</item> + <item>A reply can be sent from a later state.</item> + <item>There can be multiple <c>sys</c> traceable replies.</item> + </list> + <p> + The callback model(s) for <c>gen_statem</c> differs from + the one for <seealso marker="gen_fsm"><c>gen_fsm</c></seealso>, + but it is still fairly easy to rewrite + from <c>gen_fsm</c> to <c>gen_statem</c>. + </p> + <p> + A generic state machine process (<c>gen_statem</c>) implemented + using this module has a standard set of interface functions + and includes functionality for tracing and error reporting. + It also fits into an OTP supervision tree. For more information, see + <seealso marker="doc/design_principles:statem">OTP Design Principles</seealso>. + </p> + <p> + A <c>gen_statem</c> assumes all specific parts to be located in a + callback module exporting a predefined set of functions. + The relationship between the behavior functions and the callback + functions is as follows:</p> + <pre> +gen_statem module Callback module +----------------- --------------- +gen_statem:start +gen_statem:start_link -----> Module:init/1 + +gen_statem:stop -----> Module:terminate/3 + +gen_statem:call +gen_statem:cast +erlang:send +erlang:'!' -----> Module:StateName/3 + Module:handle_event/4 + +- -----> Module:terminate/3 + +- -----> Module:code_change/4</pre> + <p> + Events are of different + <seealso marker="#type-event_type">types</seealso>, + so the callback functions can know the origin of an event + and how to respond. + </p> + <p> + If a callback function fails or returns a bad value, + the <c>gen_statem</c> terminates. However, an exception of class + <seealso marker="erts:erlang#throw/1"><c>throw</c></seealso> + is not regarded as an error but as a valid return. + </p> + <marker id="state_function"/> + <p> + The "<em>state function</em>" for a specific + <seealso marker="#type-state">state</seealso> + in a <c>gen_statem</c> is the callback function that is called + for all events in this state. It is selected depending on which + <seealso marker="#type-callback_mode"><em>callback mode</em></seealso> + that the implementation specifies when the server starts. + </p> + <p> + When the + <seealso marker="#type-callback_mode"><em>callback mode</em></seealso> + is <c>state_functions</c>, the state must be an atom and + is used as the state function name; see + <seealso marker="#Module:StateName/3"><c>Module:StateName/3</c></seealso>. + This gathers all code for a specific state + in one function as the <c>gen_statem</c> engine + branches depending on state name. + Notice that in this mode the mandatory callback function + <seealso marker="#Module:terminate/3"><c>Module:terminate/3</c></seealso> + makes the state name <c>terminate</c> unusable. + </p> + <p> + When the + <seealso marker="#type-callback_mode"><em>callback mode</em></seealso> + is <c>handle_event_function</c>, the state can be any term + and the state function name is + <seealso marker="#Module:handle_event/4"><c>Module:handle_event/4</c></seealso>. + This makes it easy to branch depending on state or event as you desire. + Be careful about which events you handle in which + states so that you do not accidentally postpone an event + forever creating an infinite busy loop. + </p> + <p> + The <c>gen_statem</c> enqueues incoming events in order of arrival + and presents these to the + <seealso marker="#state_function">state function</seealso> + in that order. The state function can postpone an event + so it is not retried in the current state. + After a state change the queue restarts with the postponed events. + </p> + <p> + The <c>gen_statem</c> event queue model is sufficient + to emulate the normal process message queue with selective receive. + Postponing an event corresponds to not matching it + in a receive statement, and changing states corresponds + to entering a new receive statement. + </p> + <p> + The <seealso marker="#state_function">state function</seealso> + can insert events using the + <seealso marker="#type-action"><c>action()</c></seealso> + <c>next_event</c> + and such an event is inserted as the next to present + to the state function. That is, as if it is + the oldest incoming event. A dedicated + <seealso marker="#type-event_type"><c>event_type()</c></seealso> + <c>internal</c> can be used for such events making them impossible + to mistake for external events. + </p> + <p> + Inserting an event replaces the trick of calling your own + state handling functions that you often would have to + resort to in, for example, + <seealso marker="gen_fsm"><c>gen_fsm</c></seealso> + to force processing an inserted event before others. + </p> + <note> + <p>If you in <c>gen_statem</c>, for example, postpone + an event in one state and then call another state function + of yours, you have not changed states and hence the postponed event + is not retried, which is logical but can be confusing. + </p> + </note> + <p> + For the details of a state transition, see type + <seealso marker="#type-transition_option"><c>transition_option()</c></seealso>. + </p> + <p> + A <c>gen_statem</c> handles system messages as described in + <seealso marker="sys"><c>sys</c></seealso>. + The <c>sys</c> module can be used for debugging a <c>gen_statem</c>. + </p> + <p> + Notice that a <c>gen_statem</c> does not trap exit signals + automatically, this must be explicitly initiated in + the callback module (by calling + <seealso marker="erts:erlang#process_flag/2"><c>process_flag(trap_exit, true)</c></seealso>. + </p> + <p> + Unless otherwise stated, all functions in this module fail if + the specified <c>gen_statem</c> does not exist or + if bad arguments are specified. + </p> + <p> + The <c>gen_statem</c> process can go into hibernation; see + <seealso marker="proc_lib#hibernate/3"><c>proc_lib:hibernate/3</c></seealso>. + It is done when a + <seealso marker="#state_function">state function</seealso> or + <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso> + specifies <c>hibernate</c> in the returned + <seealso marker="#type-action"><c>Actions</c></seealso> + list. This feature can be useful to reclaim process heap memory + while the server is expected to be idle for a long time. + However, use this feature with care, + as hibernation can be too costly + to use after every event; see + <seealso marker="erts:erlang#hibernate/3"><c>erlang:hibernate/3</c></seealso>. + </p> + </description> + + <section> + <title>Example</title> + <p> + The following example shows a simple pushbutton model + for a toggling pushbutton implemented with + <seealso marker="#type-callback_mode"><em>callback mode</em></seealso> + <c>state_functions</c>. + You can push the button and it replies if it went on or off, + and you can ask for a count of how many times it has been + pushed to switch on. + </p> + <p>The following is the complete callback module file + <c>pushbutton.erl</c>:</p> + <code type="erl"> +-module(pushbutton). +-behaviour(gen_statem). + +-export([start/0,push/0,get_count/0,stop/0]). +-export([terminate/3,code_change/4,init/1]). +-export([on/3,off/3]). + +name() -> pushbutton_statem. % The registered server name +callback_mode() -> state_functions. + +%% API. This example uses a registered name name() +%% and does not link to the caller. +start() -> + gen_statem:start({local,name()}, ?MODULE, [], []). +push() -> + gen_statem:call(name(), push). +get_count() -> + gen_statem:call(name(), get_count). +stop() -> + gen_statem:stop(name()). + +%% Mandatory callback functions +terminate(_Reason, _State, _Data) -> + void. +code_change(_Vsn, State, Data, _Extra) -> + {callback_mode(),State,Data}. +init([]) -> + %% Set the callback mode and initial state + data. + %% Data is used only as a counter. + State = off, Data = 0, + {callback_mode(),State,Data}. + + +%%% State functions + +off({call,From}, push, Data) -> + %% Go to 'on', increment count and reply + %% that the resulting status is 'on' + {next_state,on,Data+1,[{reply,From,on}]}; +off(EventType, EventContent, Data) -> + handle_event(EventType, EventContent, Data). + +on({call,From}, push, Data) -> + %% Go to 'off' and reply that the resulting status is 'off' + {next_state,off,Data,[{reply,From,off}]}; +on(EventType, EventContent, Data) -> + handle_event(EventType, EventContent, Data). + +%% Handle events common to all states +handle_event({call,From}, get_count, Data) -> + %% Reply with the current count + {keep_state,Data,[{reply,From,Data}]}; +handle_event(_, _, Data) -> + %% Ignore all other events + {keep_state,Data}. + </code> + <p>The following is a shell session when running it:</p> + <pre> +1> pushbutton:start(). +{ok,<0.36.0>} +2> pushbutton:get_count(). +0 +3> pushbutton:push(). +on +4> pushbutton:get_count(). +1 +5> pushbutton:push(). +off +6> pushbutton:get_count(). +1 +7> pushbutton:stop(). +ok +8> pushbutton:push(). +** exception exit: {noproc,{gen_statem,call,[pushbutton_statem,push,infinity]}} + in function gen:do_for_proc/2 (gen.erl, line 261) + in call from gen_statem:call/3 (gen_statem.erl, line 386) + </pre> + <p> + To compare styles, here follows the same example using + <seealso marker="#type-callback_mode"><em>callback mode</em></seealso> + <c>state_functions</c>, or rather the code to replace + from function <c>init/1</c> of the <c>pushbutton.erl</c> + example file above: + </p> + <code type="erl"> +init([]) -> + %% Set the callback mode and initial state + data. + %% Data is used only as a counter. + State = off, Data = 0, + {handle_event_function,State,Data}. + + +%%% Event handling + +handle_event({call,From}, push, off, Data) -> + %% Go to 'on', increment count and reply + %% that the resulting status is 'on' + {next_state,on,Data+1,[{reply,From,on}]}; +handle_event({call,From}, push, on, Data) -> + %% Go to 'off' and reply that the resulting status is 'off' + {next_state,off,Data,[{reply,From,off}]}; +%% +%% Event handling common to all states +handle_event({call,From}, get_count, State, Data) -> + %% Reply with the current count + {next_state,State,Data,[{reply,From,Data}]}; +handle_event(_, _, State, Data) -> + %% Ignore all other events + {next_state,State,Data}. + </code> + </section> + + <datatypes> + <datatype> + <name name="server_name"/> + <desc> + <p> + Name specification to use when starting + a <c>gen_statem</c> server. See + <seealso marker="#start_link/3"><c>start_link/3</c></seealso> + and + <seealso marker="#type-server_ref"><c>server_ref()</c></seealso> + below. + </p> + </desc> + </datatype> + <datatype> + <name name="server_ref"/> + <desc> + <p> + Server specification to use when addressing + a <c>gen_statem</c> server. + See <seealso marker="#call/2"><c>call/2</c></seealso> and + <seealso marker="#type-server_name"><c>server_name()</c></seealso> + above. + </p> + <p>It can be:</p> + <taglist> + <tag><c>pid() | LocalName</c></tag> + <item> + <p> + The <c>gen_statem</c> is locally registered. + </p> + </item> + <tag><c>{Name,Node}</c></tag> + <item> + <p> + The <c>gen_statem</c> is locally registered + on another node. + </p> + </item> + <tag><c>{global,GlobalName}</c></tag> + <item> + <p> + The <c>gen_statem</c> is globally registered in + <seealso marker="kernel:global"><c>kernel:global</c></seealso>. + </p> + </item> + <tag><c>{via,RegMod,ViaName}</c></tag> + <item> + <p> + The <c>gen_statem</c> is registered in + an alternative process registry. + The registry callback module <c>RegMod</c> + is to export functions + <c>register_name/2</c>, <c>unregister_name/1</c>, + <c>whereis_name/1</c>, and <c>send/2</c>, + which are to behave like the corresponding functions in + <seealso marker="kernel:global"><c>kernel:global</c></seealso>. + Thus, <c>{via,global,GlobalName}</c> is the same as + <c>{global,GlobalName}</c>. + </p> + </item> + </taglist> + </desc> + </datatype> + <datatype> + <name name="debug_opt"/> + <desc> + <p> + Debug option that can be used when starting + a <c>gen_statem</c> server through, for example, + <seealso marker="#enter_loop/5"><c>enter_loop/5</c></seealso>. + </p> + <p> + For every entry in <c><anno>Dbgs</anno></c>, + the corresponding function in + <seealso marker="sys"><c>sys</c></seealso> is called. + </p> + </desc> + </datatype> + <datatype> + <name name="start_opt"/> + <desc> + <p> + Options that can be used when starting + a <c>gen_statem</c> server through, for example, + <seealso marker="#start_link/3"><c>start_link/3</c></seealso>. + </p> + </desc> + </datatype> + <datatype> + <name name="start_ret"/> + <desc> + <p> + Return value from the start functions, for example, + <seealso marker="#start_link/3"><c>start_link/3</c></seealso>. + </p> + </desc> + </datatype> + <datatype> + <name name="from"/> + <desc> + <p> + Destination to use when replying through, for example, the + <seealso marker="#type-action"><c>action()</c></seealso> + <c>{reply,From,Reply}</c> + to a process that has called the <c>gen_statem</c> server using + <seealso marker="#call/2"><c>call/2</c></seealso>. + </p> + </desc> + </datatype> + <datatype> + <name name="state"/> + <desc> + <p> + After a state change (<c>NextState =/= State</c>), + all postponed events are retried. + </p> + </desc> + </datatype> + <datatype> + <name name="state_name"/> + <desc> + <p> + If the + <seealso marker="#type-callback_mode"><em>callback mode</em></seealso> + is <c>state_functions</c>, + the state must be of this type. + </p> + </desc> + </datatype> + <datatype> + <name name="data"/> + <desc> + <p> + A term in which the state machine implementation + is to store any server data it needs. The difference between + this and the <seealso marker="#type-state"><c>state()</c></seealso> + itself is that a change in this data does not cause + postponed events to be retried. Hence, if a change + in this data would change the set of events that + are handled, then that data item is to be made + a part of the state. + </p> + </desc> + </datatype> + <datatype> + <name name="event_type"/> + <desc> + <p> + External events are of three types: + <c>{call,<anno>From</anno>}</c>, <c>cast</c>, or <c>info</c>. + <seealso marker="#call/2">Calls</seealso> + (synchronous) and + <seealso marker="#cast/2">casts</seealso> + originate from the corresponding API functions. + For calls, the event contains whom to reply to. + Type <c>info</c> originates from regular process messages sent + to the <c>gen_statem</c>. Also, the state machine + implementation can generate events of types + <c>timeout</c> and <c>internal</c> to itself. + </p> + </desc> + </datatype> + <datatype> + <name name="callback_mode"/> + <desc> + <p> + The <em>callback mode</em> is selected when starting the + <c>gen_statem</c> using the return value from + <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso> + or when calling + <seealso marker="#enter_loop/5"><c>enter_loop/5,6,7</c></seealso>, + and with the return value from + <seealso marker="#Module:code_change/4"><c>Module:code_change/4</c></seealso>. + </p> + <taglist> + <tag><c>state_functions</c></tag> + <item> + <p> + The state must be of type + <seealso marker="#type-state_name"><c>state_name()</c></seealso> + and one callback function per state, that is, + <seealso marker="#Module:StateName/3"><c>Module:StateName/3</c></seealso>, + is used. + </p> + </item> + <tag><c>handle_event_function</c></tag> + <item> + <p> + The state can be any term and the callback function + <seealso marker="#Module:handle_event/4"><c>Module:handle_event/4</c></seealso> + is used for all states. + </p> + </item> + </taglist> + </desc> + </datatype> + <datatype> + <name name="transition_option"/> + <desc> + <p> + Transition options can be set by + <seealso marker="#type-action">actions</seealso> + and they modify the following in how + the state transition is done: + </p> + <list type="ordered"> + <item> + <p> + All + <seealso marker="#type-action">actions</seealso> + are processed in order of appearance. + </p> + </item> + <item> + <p> + If + <seealso marker="#type-postpone"><c>postpone()</c></seealso> + is <c>true</c>, + the current event is postponed. + </p> + </item> + <item> + <p> + If the state changes, the queue of incoming events + is reset to start with the oldest postponed. + </p> + </item> + <item> + <p> + All events stored with + <seealso marker="#type-action"><c>action()</c></seealso> + <c>next_event</c> + are inserted in the queue to be processed before + all other events. + </p> + </item> + <item> + <p> + If an + <seealso marker="#type-event_timeout"><c>event_timeout()</c></seealso> + is set through + <seealso marker="#type-action"><c>action()</c></seealso> + <c>timeout</c>, + an event timer can be started or a time-out zero event + can be enqueued. + </p> + </item> + <item> + <p> + The (possibly new) + <seealso marker="#state_function">state function</seealso> + is called with the oldest enqueued event if there is any, + otherwise the <c>gen_statem</c> goes into <c>receive</c> + or hibernation + (if + <seealso marker="#type-hibernate"><c>hibernate()</c></seealso> + is <c>true</c>) + to wait for the next message. In hibernation the next + non-system event awakens the <c>gen_statem</c>, or rather + the next incoming message awakens the <c>gen_statem</c>, + but if it is a system event + it goes right back into hibernation. + </p> + </item> + </list> + </desc> + </datatype> + <datatype> + <name name="postpone"/> + <desc> + <p> + If <c>true</c>, postpones the current event and retries + it when the state changes + (<c>NextState =/= State</c>). + </p> + </desc> + </datatype> + <datatype> + <name name="hibernate"/> + <desc> + <p> + If <c>true</c>, hibernates the <c>gen_statem</c> + by calling + <seealso marker="proc_lib#hibernate/3"><c>proc_lib:hibernate/3</c></seealso> + before going into <c>receive</c> + to wait for a new external event. + If there are enqueued events, + to prevent receiving any new event, an + <seealso marker="erts:erlang#garbage_collect/0"><c>erlang:garbage_collect/0</c></seealso> + is done instead to simulate + that the <c>gen_statem</c> entered hibernation + and immediately got awakened by the oldest enqueued event. + </p> + </desc> + </datatype> + <datatype> + <name name="event_timeout"/> + <desc> + <p> + Generates an event of + <seealso marker="#type-event_type"><c>event_type()</c></seealso> + <c>timeout</c> + after this time (in milliseconds) unless another + event arrives in which case this time-out is cancelled. + Notice that a retried or inserted event + counts like a new in this respect. + </p> + <p> + If the value is <c>infinity</c>, no timer is started, as + it never triggers anyway. + </p> + <p> + If the value is <c>0</c>, the time-out event is immediately enqueued + unless there already are enqueued events, as the + time-out is then immediately cancelled. + This is a feature ensuring that a time-out <c>0</c> event + is processed before any not yet received external event. + </p> + <p> + Notice that it is not possible or needed to cancel this time-out, + as it is cancelled automatically by any other event. + </p> + </desc> + </datatype> + <datatype> + <name name="action"/> + <desc> + <p> + These state transition actions can be invoked by + returning them from the + <seealso marker="#state_function">state function</seealso>, from + <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso> + or by giving them to + <seealso marker="#enter_loop/6"><c>enter_loop/6,7</c></seealso>. + </p> + <p> + Actions are executed in the containing list order. + </p> + <p> + Actions that set + <seealso marker="#type-transition_option">transition options</seealso> + override any previous of the same type, + so the last in the containing list wins. + For example, the last + <seealso marker="#type-event_timeout"><c>event_timeout()</c></seealso> + overrides any other <c>event_timeout()</c> in the list. + </p> + <taglist> + <tag><c>postpone</c></tag> + <item> + <p> + Sets the + <seealso marker="#type-transition_option"><c>transition_option()</c></seealso> + <seealso marker="#type-postpone"><c>postpone()</c></seealso> + for this state transition. + This action is ignored when returned from + <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso> + or given to + <seealso marker="#enter_loop/5"><c>enter_loop/5,6</c></seealso>, + as there is no event to postpone in those cases. + </p> + </item> + <tag><c>hibernate</c></tag> + <item> + <p> + Sets the + <seealso marker="#type-transition_option"><c>transition_option()</c></seealso> + <seealso marker="#type-hibernate"><c>hibernate()</c></seealso> + for this state transition. + </p> + </item> + <tag><c>Timeout</c></tag> + <item> + <p> + Short for <c>{timeout,Timeout,Timeout}</c>, that is, + the time-out message is the time-out time. + This form exists to make the + <seealso marker="#state_function">state function</seealso> + return value <c>{next_state,NextState,NewData,Timeout}</c> + allowed like for <c>gen_fsm</c>'s + <seealso marker="gen_fsm#Module:StateName/2"><c>Module:StateName/2</c></seealso>. + </p> + </item> + <tag><c>timeout</c></tag> + <item> + <p> + Sets the + <seealso marker="#type-transition_option"><c>transition_option()</c></seealso> + <seealso marker="#type-event_timeout"><c>event_timeout()</c></seealso> + to <c><anno>Time</anno></c> with <c><anno>EventContent</anno></c>. + </p> + </item> + <tag><c>reply_action()</c></tag> + <item> + <p> + Replies to a caller. + </p> + </item> + <tag><c>next_event</c></tag> + <item> + <p> + Stores the specified <c><anno>EventType</anno></c> + and <c><anno>EventContent</anno></c> for insertion after all + actions have been executed. + </p> + <p> + The stored events are inserted in the queue as the next to process + before any already queued events. The order of these stored events + is preserved, so the first <c>next_event</c> in the containing + list becomes the first to process. + </p> + <p> + An event of type + <seealso marker="#type-event_type"><c>internal</c></seealso> + is to be used when you want to reliably distinguish + an event inserted this way from any external event. + </p> + </item> + </taglist> + </desc> + </datatype> + <datatype> + <name name="reply_action"/> + <desc> + <p> + Replies to a caller waiting for a reply in + <seealso marker="#call/2"><c>call/2</c></seealso>. + <c><anno>From</anno></c> must be the term from argument + <seealso marker="#type-event_type"><c>{call,<anno>From</anno>}</c></seealso> + to the + <seealso marker="#state_function">state function</seealso>. + </p> + </desc> + </datatype> + <datatype> + <name name="state_function_result"/> + <desc> + <taglist> + <tag><c>next_state</c></tag> + <item> + <p> + The <c>gen_statem</c> does a state transition to + <c><anno>NextStateName</anno></c> + (which can be the same as the current state), + sets <c><anno>NewData</anno></c>, + and executes all <c><anno>Actions</anno></c>. + </p> + </item> + </taglist> + <p> + All these terms are tuples or atoms and this property + will hold in any future version of <c>gen_statem</c>. + </p> + </desc> + </datatype> + <datatype> + <name name="handle_event_result"/> + <desc> + <taglist> + <tag><c>next_state</c></tag> + <item> + <p> + The <c>gen_statem</c> does a state transition to + <c><anno>NextState</anno></c> + (which can be the same as the current state), + sets <c><anno>NewData</anno></c>, + and executes all <c><anno>Actions</anno></c>. + </p> + </item> + </taglist> + <p> + All these terms are tuples or atoms and this property + will hold in any future version of <c>gen_statem</c>. + </p> + </desc> + </datatype> + <datatype> + <name name="common_state_callback_result"/> + <desc> + <taglist> + <tag><c>stop</c></tag> + <item> + <p> + Terminates the <c>gen_statem</c> by calling + <seealso marker="#Module:terminate/3"><c>Module:terminate/3</c></seealso> + with <c>Reason</c> and + <c><anno>NewData</anno></c>, if specified. + </p> + </item> + <tag><c>stop_and_reply</c></tag> + <item> + <p> + Sends all <c><anno>Replies</anno></c>, + then terminates the <c>gen_statem</c> by calling + <seealso marker="#Module:terminate/3"><c>Module:terminate/3</c></seealso> + with <c>Reason</c> and + <c><anno>NewData</anno></c>, if specified. + </p> + </item> + <tag><c>keep_state</c></tag> + <item> + <p> + The <c>gen_statem</c> keeps the current state, or + does a state transition to the current state if you like, + sets <c><anno>NewData</anno></c>, + and executes all <c><anno>Actions</anno></c>. + This is the same as + <c>{next_state,CurrentState,<anno>NewData</anno>,<anno>Actions</anno>}</c>. + </p> + </item> + <tag><c>keep_state_and_data</c></tag> + <item> + <p> + The <c>gen_statem</c> keeps the current state or + does a state transition to the current state if you like, + keeps the current server data, + and executes all <c><anno>Actions</anno></c>. + This is the same as + <c>{next_state,CurrentState,CurrentData,<anno>Actions</anno>}</c>. + </p> + </item> + </taglist> + <p> + All these terms are tuples or atoms and this property + will hold in any future version of <c>gen_statem</c>. + </p> + </desc> + </datatype> + </datatypes> + + <funcs> + <func> + <name name="call" arity="2"/> + <name name="call" arity="3"/> + <fsummary>Make a synchronous call to a <c>gen_statem</c>.</fsummary> + <desc> + <p> + Makes a synchronous call to the <c>gen_statem</c> + <seealso marker="#type-server_ref"><c><anno>ServerRef</anno></c></seealso> + by sending a request + and waiting until its reply arrives. + The <c>gen_statem</c> calls the + <seealso marker="#state_function">state function</seealso> with + <seealso marker="#type-event_type"><c>event_type()</c></seealso> + <c>{call,From}</c> and event content + <c><anno>Request</anno></c>. + </p> + <p> + A <c><anno>Reply</anno></c> is generated when a + <seealso marker="#state_function">state function</seealso> + returns with + <c>{reply,From,<anno>Reply</anno>}</c> as one + <seealso marker="#type-action"><c>action()</c></seealso>, + and that <c><anno>Reply</anno></c> becomes the return value + of this function. + </p> + <p> + <c><anno>Timeout</anno></c> is an integer > 0, + which specifies how many milliseconds to wait for a reply, + or the atom <c>infinity</c> to wait indefinitely, + which is the default. If no reply is received within + the specified time, the function call fails. + </p> + <note> + <p> + To avoid getting a late reply in the caller's + inbox, this function spawns a proxy process that + does the call. A late reply gets delivered to the + dead proxy process, hence gets discarded. This is + less efficient than using + <c><anno>Timeout</anno> =:= infinity</c>. + </p> + </note> + <p> + The call can fail, for example, if the <c>gen_statem</c> dies + before or during this function call. + </p> + </desc> + </func> + + <func> + <name name="cast" arity="2"/> + <fsummary>Send an asynchronous event to a <c>gen_statem</c>.</fsummary> + <desc> + <p> + Sends an asynchronous event to the <c>gen_statem</c> + <seealso marker="#type-server_ref"><c><anno>ServerRef</anno></c></seealso> + and returns <c>ok</c> immediately, + ignoring if the destination node or <c>gen_statem</c> + does not exist. + The <c>gen_statem</c> calls the + <seealso marker="#state_function">state function</seealso> with + <seealso marker="#type-event_type"><c>event_type()</c></seealso> + <c>cast</c> and event content + <c><anno>Msg</anno></c>. + </p> + </desc> + </func> + + <func> + <name name="enter_loop" arity="5"/> + <fsummary>Enter the <c>gen_statem</c> receive loop.</fsummary> + <desc> + <p> + The same as + <seealso marker="#enter_loop/7"><c>enter_loop/7</c></seealso> + except that no + <seealso marker="#type-server_name"><c>server_name()</c></seealso> + must have been registered. + </p> + </desc> + </func> + + <func> + <name name="enter_loop" arity="6"/> + <fsummary>Enter the <c>gen_statem</c> receive loop.</fsummary> + <desc> + <p> + If <c><anno>Server_or_Actions</anno></c> is a <c>list()</c>, + the same as + <seealso marker="#enter_loop/7"><c>enter_loop/7</c></seealso> + except that no + <seealso marker="#type-server_name"><c>server_name()</c></seealso> + must have been registered and + <c>Actions = <anno>Server_or_Actions</anno></c>. + </p> + <p> + Otherwise the same as + <seealso marker="#enter_loop/7"><c>enter_loop/7</c></seealso> + with + <c>Server = <anno>Server_or_Actions</anno></c> and + <c>Actions = []</c>. + </p> + </desc> + </func> + + <func> + <name name="enter_loop" arity="7"/> + <fsummary>Enter the <c>gen_statem</c> receive loop.</fsummary> + <desc> + <p> + Makes the calling process become a <c>gen_statem</c>. + Does not return, instead the calling process enters + the <c>gen_statem</c> receive loop and becomes + a <c>gen_statem</c> server. + The process <em>must</em> have been started + using one of the start functions in + <seealso marker="proc_lib"><c>proc_lib</c></seealso>. + The user is responsible for any initialization of the process, + including registering a name for it. + </p> + <p> + This function is useful when a more complex initialization + procedure is needed than + the <c>gen_statem</c> behavior provides. + </p> + <p> + <c><anno>Module</anno></c>, <c><anno>Opts</anno></c>, and + <c><anno>Server</anno></c> have the same meanings + as when calling + <seealso marker="#start_link/3"><c>start[_link]/3,4</c></seealso>. + However, the + <seealso marker="#type-server_name"><c>server_name()</c></seealso> + name must have been registered accordingly + <em>before</em> this function is called.</p> + <p> + <c><anno>CallbackMode</anno></c>, <c><anno>State</anno></c>, + <c><anno>Data</anno></c>, and <c><anno>Actions</anno></c> + have the same meanings as in the return value of + <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso>. + Also, the callback module <c><anno>Module</anno></c> + does not need to export an <c>init/1</c> function. + </p> + <p> + The function fails if the calling process was not started by a + <seealso marker="proc_lib"><c>proc_lib</c></seealso> + start function, or if it is not registered + according to + <seealso marker="#type-server_name"><c>server_name()</c></seealso>. + </p> + </desc> + </func> + + <func> + <name name="reply" arity="1"/> + <name name="reply" arity="2"/> + <fsummary>Reply to a caller.</fsummary> + <desc> + <p> + This function can be used by a <c>gen_statem</c> + to explicitly send a reply to a process that waits in + <seealso marker="#call/2"><c>call/2</c></seealso> + when the reply cannot be defined in + the return value of a + <seealso marker="#state_function">state function</seealso>. + </p> + <p> + <c><anno>From</anno></c> must be the term from argument + <seealso marker="#type-event_type"><c>{call,<anno>From</anno>}</c></seealso> + to the + <seealso marker="#state_function">state function</seealso>. + <c><anno>From</anno></c> and <c><anno>Reply</anno></c> + can also be specified using a + <seealso marker="#type-reply_action"><c>reply_action()</c></seealso> + and multiple replies with a list of them. + </p> + <note> + <p> + A reply sent with this function is not visible + in <seealso marker="sys"><c>sys</c></seealso> debug output. + </p> + </note> + </desc> + </func> + + <func> + <name name="start" arity="3"/> + <name name="start" arity="4"/> + <fsummary>Create a standalone <c>gen_statem</c> process.</fsummary> + <desc> + <p> + Creates a standalone <c>gen_statem</c> process according to + OTP design principles (using + <seealso marker="proc_lib"><c>proc_lib</c></seealso> + primitives). + As it does not get linked to the calling process, + this start function cannot be used by a supervisor + to start a child. + </p> + <p> + For a description of arguments and return values, see + <seealso marker="#start_link/3"><c>start_link/3,4</c></seealso>. + </p> + </desc> + </func> + + <func> + <name name="start_link" arity="3"/> + <name name="start_link" arity="4"/> + <fsummary>Create a linked <c>gen_statem</c> process.</fsummary> + <desc> + <p> + Creates a <c>gen_statem</c> process according + to OTP design principles + (using + <seealso marker="proc_lib"><c>proc_lib</c></seealso> + primitives) + that is linked to the calling process. + This is essential when the <c>gen_statem</c> must be part of + a supervision tree so it gets linked to its supervisor. + </p> + <p> + The <c>gen_statem</c> process calls + <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso> + to initialize the server. To ensure a synchronized startup + procedure, <c>start_link/3,4</c> does not return until + <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso> + has returned. + </p> + <p> + <c><anno>ServerName</anno></c> specifies the + <seealso marker="#type-server_name"><c>server_name()</c></seealso> + to register for the <c>gen_statem</c>. + If the <c>gen_statem</c> is started with <c>start_link/3</c>, + no <c><anno>ServerName</anno></c> is provided and + the <c>gen_statem</c> is not registered. + </p> + <p><c><anno>Module</anno></c> is the name of the callback module.</p> + <p> + <c><anno>Args</anno></c> is an arbitrary term that is passed as + the argument to + <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso>. + </p> + <list type="bulleted"> + <item> + <p> + If option <c>{timeout,Time}</c> is present in + <c><anno>Opts</anno></c>, the <c>gen_statem</c> + is allowed to spend <c>Time</c> milliseconds initializing + or it terminates and the start function returns + <seealso marker="#type-start_ret"><c>{error,timeout}</c></seealso>. + </p> + </item> + <item> + <p> + If option + <seealso marker="#type-debug_opt"><c>{debug,Dbgs}</c></seealso> + is present in <c><anno>Opts</anno></c>, debugging through + <seealso marker="sys"><c>sys</c></seealso> is activated. + </p> + </item> + <item> + <p> + If option <c>{spawn_opt,SpawnOpts}</c> is present in + <c><anno>Opts</anno></c>, <c>SpawnOpts</c> is passed + as option list to + <seealso marker="erts:erlang#spawn_opt/2"><c>erlang:spawn_opt/2</c></seealso>, + which is used to spawn the <c>gen_statem</c> process. + </p> + </item> + </list> + <note> + <p> + Using spawn option <c>monitor</c> is not + allowed, it causes this function to fail with reason + <c>badarg</c>. + </p> + </note> + <p> + If the <c>gen_statem</c> is successfully created + and initialized, this function returns + <seealso marker="#type-start_ret"><c>{ok,Pid}</c></seealso>, + where <c>Pid</c> is the <c>pid()</c> + of the <c>gen_statem</c>. + If a process with the specified <c><anno>ServerName</anno></c> + exists already, this function returns + <seealso marker="#type-start_ret"><c>{error,{already_started,Pid}}</c></seealso>, + where <c>Pid</c> is the <c>pid()</c> of that process. + </p> + <p> + If <c>Module:init/1</c> fails with <c>Reason</c>, + this function returns + <seealso marker="#type-start_ret"><c>{error,Reason}</c></seealso>. + If <c>Module:init/1</c> returns + <seealso marker="#type-start_ret"><c>{stop,Reason}</c></seealso> + or + <seealso marker="#type-start_ret"><c>ignore</c></seealso>, + the process is terminated and this function + returns + <seealso marker="#type-start_ret"><c>{error,Reason}</c></seealso> + or + <seealso marker="#type-start_ret"><c>ignore</c></seealso>, + respectively. + </p> + </desc> + </func> + + <func> + <name name="stop" arity="1"/> + <fsummary>Synchronously stop a generic server.</fsummary> + <desc> + <p> + The same as + <seealso marker="#stop/3"><c>stop(<anno>ServerRef</anno>, normal, infinity)</c></seealso>. + </p> + </desc> + </func> + + <func> + <name name="stop" arity="3"/> + <fsummary>Synchronously stop a generic server.</fsummary> + <desc> + <p> + Orders the <c>gen_statem</c> + <seealso marker="#type-server_ref"><c><anno>ServerRef</anno></c></seealso> + to exit with the specified <c><anno>Reason</anno></c> + and waits for it to terminate. + The <c>gen_statem</c> calls + <seealso marker="#Module:terminate/3"><c>Module:terminate/3</c></seealso> + before exiting. + </p> + <p> + This function returns <c>ok</c> if the server terminates + with the expected reason. Any other reason than <c>normal</c>, + <c>shutdown</c>, or <c>{shutdown,Term}</c> causes an + error report to be issued through + <seealso marker="kernel:error_logger#format/2"><c>error_logger:format/2</c></seealso>. + The default <c><anno>Reason</anno></c> is <c>normal</c>. + </p> + <p> + <c><anno>Timeout</anno></c> is an integer > 0, + which specifies how many milliseconds to wait for the server to + terminate, or the atom <c>infinity</c> to wait indefinitely. + Defaults to <c>infinity</c>. + If the server does not terminate within the specified time, + a <c>timeout</c> exception is raised. + </p> + <p> + If the process does not exist, a <c>noproc</c> exception + is raised. + </p> + </desc> + </func> + </funcs> + + <section> + <title>Callback Functions</title> + <p> + The following functions are to be exported from a + <c>gen_statem</c> callback module. + </p> + </section> + + <funcs> + <func> + <name>Module:code_change(OldVsn, OldState, OldData, Extra) -> + Result + </name> + <fsummary>Update the internal state during upgrade/downgrade.</fsummary> + <type> + <v>OldVsn = Vsn | {down,Vsn}</v> + <v> Vsn = term()</v> + <v>OldState = NewState = term()</v> + <v>Extra = term()</v> + <v>Result = {NewCallbackMode,NewState,NewData} | Reason</v> + <v> + NewCallbackMode = + <seealso marker="#type-callback_mode">callback_mode()</seealso> + </v> + <v> + OldState = NewState = + <seealso marker="#type-state">state()</seealso> + </v> + <v> + OldData = NewData = + <seealso marker="#type-data">data()</seealso> + </v> + <v>Reason = term()</v> + </type> + <desc> + <p> + This function is called by a <c>gen_statem</c> when it is to + update its internal state during a release upgrade/downgrade, + that is, when the instruction <c>{update,Module,Change,...}</c>, + where <c>Change={advanced,Extra}</c>, is specified in the + <seealso marker="sasl:appup"><c>appup</c></seealso> + file. For more information, see + <seealso marker="doc/design_principles:release_handling#instr">OTP Design Principles</seealso>. + </p> + <p> + For an upgrade, <c>OldVsn</c> is <c>Vsn</c>, and + for a downgrade, <c>OldVsn</c> is + <c>{down,Vsn}</c>. <c>Vsn</c> is defined by the <c>vsn</c> + attribute(s) of the old version of the callback module + <c>Module</c>. If no such attribute is defined, the version + is the checksum of the Beam file. + </p> + <note> + <p> + If you would dare to change + <seealso marker="#type-callback_mode"><em>callback mode</em></seealso> + during release upgrade/downgrade, the upgrade is no problem, + as the new code surely knows what <em>callback mode</em> + it needs. However, for a downgrade this function must + know from argument <c>Extra</c> that comes from the + <seealso marker="sasl:appup"><c>sasl:appup</c></seealso> + file what <em>callback mode</em> the old code did use. + It can also be possible to figure this out + from argument <c>{down,Vsn}</c>, as <c>Vsn</c> + in effect defines the old callback module version. + </p> + </note> + <p> + <c>OldState</c> and <c>OldData</c> is the internal state + of the <c>gen_statem</c>. + </p> + <p> + <c>Extra</c> is passed "as is" from the <c>{advanced,Extra}</c> + part of the update instruction. + </p> + <p> + If successful, the function must return the updated + internal state in an + <c>{NewCallbackMode,NewState,NewData}</c> tuple. + </p> + <p> + If the function returns <c>Reason</c>, the ongoing + upgrade fails and rolls back to the old release.</p> + <p> + This function can use + <seealso marker="erts:erlang#throw/1"><c>erlang:throw/1</c></seealso> + to return <c>Result</c> or <c>Reason</c>. + </p> + </desc> + </func> + + <func> + <name>Module:init(Args) -> Result</name> + <fsummary>Initialize process and internal state.</fsummary> + <type> + <v>Args = term()</v> + <v>Result = {CallbackMode,State,Data}</v> + <v> | {CallbackMode,State,Data,Actions}</v> + <v> | {stop,Reason} | ignore</v> + <v> + CallbackMode = + <seealso marker="#type-callback_mode">callback_mode()</seealso> + </v> + <v>State = <seealso marker="#type-state">state()</seealso></v> + <v> + Data = <seealso marker="#type-data">data()</seealso> + </v> + <v> + Actions = + [<seealso marker="#type-action">action()</seealso>] | + <seealso marker="#type-action">action()</seealso> + </v> + <v>Reason = term()</v> + </type> + <desc> + <marker id="Module:init-1"/> + <p> + Whenever a <c>gen_statem</c> is started using + <seealso marker="#start_link/3"><c>start_link/3,4</c></seealso> + or + <seealso marker="#start/3"><c>start/3,4</c></seealso>, + this function is called by the new process to initialize + the implementation state and server data. + </p> + <p> + <c>Args</c> is the <c>Args</c> argument provided to the start + function. + </p> + <p> + If the initialization is successful, the function is to + return <c>{CallbackMode,State,Data}</c> or + <c>{CallbackMode,State,Data,Actions}</c>. + <c>CallbackMode</c> selects the + <seealso marker="#type-callback_mode"><em>callback mode</em></seealso> + of the <c>gen_statem</c>. + <c>State</c> is the initial + <seealso marker="#type-state"><c>state()</c></seealso> + and <c>Data</c> the initial server + <seealso marker="#type-data"><c>data()</c></seealso>. + </p> + <p> + The <seealso marker="#type-action"><c>Actions</c></seealso> + are executed when entering the first + <seealso marker="#type-state">state</seealso> just as for a + <seealso marker="#state_function">state function</seealso>. + </p> + <p> + If the initialization fails, + the function is to return <c>{stop,Reason}</c> + or <c>ignore</c>; see + <seealso marker="#start_link/3"><c>start_link/3,4</c></seealso>. + </p> + <p> + This function can use + <seealso marker="erts:erlang#throw/1"><c>erlang:throw/1</c></seealso> + to return <c>Result</c>. + </p> + </desc> + </func> + + <func> + <name>Module:format_status(Opt, [PDict,State,Data]) -> + Status + </name> + <fsummary>Optional function for providing a term describing the + current <c>gen_statem</c> status.</fsummary> + <type> + <v>Opt = normal | terminate</v> + <v>PDict = [{Key, Value}]</v> + <v> + State = + <seealso marker="#type-state">state()</seealso> + </v> + <v> + Data = + <seealso marker="#type-data">data()</seealso> + </v> + <v>Key = term()</v> + <v>Value = term()</v> + <v>Status = term()</v> + </type> + <desc> + <note> + <p> + This callback is optional, so a callback module does not need + to export it. The <c>gen_statem</c> module provides a default + implementation of this function that returns + <c>{State,Data}</c>. If this callback fails, the default + function returns <c>{State,Info}</c>, + where <c>Info</c> informs of the crash but no details, + to hide possibly sensitive data. + </p> + </note> + <p>This function is called by a <c>gen_statem</c> process when + any of the following apply:</p> + <list type="bulleted"> + <item> + One of + <seealso marker="sys#get_status/1"><c>sys:get_status/1,2</c></seealso> + is invoked to get the <c>gen_statem</c> status. <c>Opt</c> is set + to the atom <c>normal</c> for this case. + </item> + <item> + The <c>gen_statem</c> terminates abnormally and logs an error. + <c>Opt</c> is set to the atom <c>terminate</c> for this case. + </item> + </list> + <p> + This function is useful for changing the form and + appearance of the <c>gen_statem</c> status for these cases. A + callback module wishing to change the + <seealso marker="sys#get_status/1"><c>sys:get_status/1,2</c></seealso> + return value and how + its status appears in termination error logs exports an + instance of <c>format_status/2</c>, which returns a term + describing the current status of the <c>gen_statem</c>. + </p> + <p> + <c>PDict</c> is the current value of the process dictionary + of the <c>gen_statem</c>. + </p> + <p> + <seealso marker="#type-state"><c>State</c></seealso> + is the internal state of the <c>gen_statem</c>. + </p> + <p> + <seealso marker="#type-data"><c>Data</c></seealso> + is the internal server data of the <c>gen_statem</c>. + </p> + <p> + The function is to return <c>Status</c>, a term that + changes the details of the current state and status of + the <c>gen_statem</c>. There are no restrictions on the + form <c>Status</c> can take, but for the + <seealso marker="sys#get_status/1"><c>sys:get_status/1,2</c></seealso> + case (when <c>Opt</c> + is <c>normal</c>), the recommended form for + the <c>Status</c> value is <c>[{data, [{"State", + Term}]}]</c>, where <c>Term</c> provides relevant details of + the <c>gen_statem</c> state. Following this recommendation is not + required, but it makes the callback module status + consistent with the rest of the + <seealso marker="sys#get_status/1"><c>sys:get_status/1,2</c></seealso> + return value. + </p> + <p> + One use for this function is to return compact alternative + state representations to avoid having large state terms + printed in log files. Another use is to hide sensitive data from + being written to the error log. + </p> + <p> + This function can use + <seealso marker="erts:erlang#throw/1"><c>erlang:throw/1</c></seealso> + to return <c>Status</c>. + </p> + </desc> + </func> + + <func> + <name>Module:StateName(EventType, EventContent, Data) -> + StateFunctionResult + </name> + <name>Module:handle_event(EventType, EventContent, + State, Data) -> HandleEventResult + </name> + <fsummary>Handle an event.</fsummary> + <type> + <v> + EventType = + <seealso marker="#type-event_type">event_type()</seealso> + </v> + <v>EventContent = term()</v> + <v> + State = + <seealso marker="#type-state">state()</seealso> + </v> + <v> + Data = NewData = + <seealso marker="#type-data">data()</seealso> + </v> + <v> + StateFunctionResult = + <seealso marker="#type-state_function_result">state_function_result()</seealso> + </v> + <v> + HandleEventResult = + <seealso marker="#type-handle_event_result">handle_event_result()</seealso> + </v> + </type> + <desc> + <p> + Whenever a <c>gen_statem</c> receives an event from + <seealso marker="#call/2"><c>call/2</c></seealso>, + <seealso marker="#cast/2"><c>cast/2</c></seealso>, or + as a normal process message, one of these functions is called. If + <seealso marker="#type-callback_mode"><em>callback mode</em></seealso> + is <c>state_functions</c>, <c>Module:StateName/3</c> is called, + and if it is <c>handle_event_function</c>, + <c>Module:handle_event/4</c> is called. + </p> + <p> + If <c>EventType</c> is + <seealso marker="#type-event_type"><c>{call,From}</c></seealso>, + the caller waits for a reply. The reply can be sent + from this or from any other + <seealso marker="#state_function">state function</seealso> + by returning with <c>{reply,From,Reply}</c> in + <seealso marker="#type-action"><c>Actions</c></seealso>, in + <seealso marker="#type-reply_action"><c>Replies</c></seealso>, + or by calling + <seealso marker="#reply/2"><c>reply(From, Reply)</c></seealso>. + </p> + <p> + If this function returns with a next state that + does not match equal (<c>=/=</c>) to the current state, + all postponed events are retried in the next state. + </p> + <p> + The only difference between <c>StateFunctionResult</c> and + <c>HandleEventResult</c> is that for <c>StateFunctionResult</c> + the next state must be an atom, but for <c>HandleEventResult</c> + there is no restriction on the next state. + </p> + <p> + For options that can be set and actions that can be done + by <c>gen_statem</c> after returning from this function, + see <seealso marker="#type-action"><c>action()</c></seealso>. + </p> + <p> + These functions can use + <seealso marker="erts:erlang#throw/1"><c>erlang:throw/1</c></seealso>, + to return the result. + </p> + </desc> + </func> + + <func> + <name>Module:terminate(Reason, State, Data) -> Ignored</name> + <fsummary>Clean up before termination.</fsummary> + <type> + <v>Reason = normal | shutdown | {shutdown,term()} | term()</v> + <v>State = <seealso marker="#type-state">state()</seealso></v> + <v>Data = <seealso marker="#type-data">data()</seealso></v> + <v>Ignored = term()</v> + </type> + <desc> + <p> + This function is called by a <c>gen_statem</c> + when it is about to terminate. It is to be the opposite of + <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso> + and do any necessary cleaning up. When it returns, + the <c>gen_statem</c> terminates with <c>Reason</c>. The return + value is ignored.</p> + <p> + <c>Reason</c> is a term denoting the stop reason and + <seealso marker="#type-state"><c>State</c></seealso> + is the internal state of the <c>gen_statem</c>. + </p> + <p> + <c>Reason</c> depends on why the <c>gen_statem</c> + is terminating. + If it is because another callback function has returned, a + stop tuple <c>{stop,Reason}</c> in + <seealso marker="#type-action"><c>Actions</c></seealso>, + <c>Reason</c> has the value specified in that tuple. + If it is because of a failure, <c>Reason</c> is the error reason. + </p> + <p> + If the <c>gen_statem</c> is part of a supervision tree and is + ordered by its supervisor to terminate, this function is + called with <c>Reason = shutdown</c> if both the following + conditions apply:</p> + <list type="bulleted"> + <item> + <p> + The <c>gen_statem</c> has been set + to trap exit signals. + </p> + </item> + <item> + <p> + The shutdown strategy as defined in the supervisor's + child specification is an integer time-out value, not + <c>brutal_kill</c>. + </p> + </item> + </list> + <p> + Even if the <c>gen_statem</c> is <em>not</em> + part of a supervision tree, this function is called + if it receives an <c>'EXIT'</c> message from its parent. + <c>Reason</c> is the same as + in the <c>'EXIT'</c> message. + </p> + <p> + Otherwise, the <c>gen_statem</c> is immediately terminated. + </p> + <p> + Notice that for any other reason than <c>normal</c>, + <c>shutdown</c>, or <c>{shutdown,Term}</c>, + the <c>gen_statem</c> is assumed to terminate because of an error + and an error report is issued using + <seealso marker="kernel:error_logger#format/2"><c>error_logger:format/2</c></seealso>. + </p> + <p> + This function can use + <seealso marker="erts:erlang#throw/1"><c>erlang:throw/1</c></seealso> + to return <c>Ignored</c>, which is ignored anyway. + </p> + </desc> + </func> + </funcs> + + <section> + <title>See Also</title> + <p> + <seealso marker="gen_event"><c>gen_event(3)</c></seealso>, + <seealso marker="gen_fsm"><c>gen_fsm(3)</c></seealso>, + <seealso marker="gen_server"><c>gen_server(3)</c></seealso>, + <seealso marker="proc_lib"><c>proc_lib(3)</c></seealso>, + <seealso marker="supervisor"><c>supervisor(3)</c></seealso>, + <seealso marker="sys"><c>sys(3)</c></seealso>. + </p> + </section> +</erlref> diff --git a/lib/stdlib/doc/src/io.xml b/lib/stdlib/doc/src/io.xml index a28180b42a..9ae50ed90c 100644 --- a/lib/stdlib/doc/src/io.xml +++ b/lib/stdlib/doc/src/io.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -131,8 +132,8 @@ <func> <name name="get_chars" arity="2"/> <name name="get_chars" arity="3"/> - <type name="server_no_data"/> <fsummary>Read a specified number of characters</fsummary> + <type name="server_no_data"/> <desc> <p>Reads <c><anno>Count</anno></c> characters from standard input (<c><anno>IoDevice</anno></c>), prompting it with <c><anno>Prompt</anno></c>. It @@ -161,8 +162,8 @@ <func> <name name="get_line" arity="1"/> <name name="get_line" arity="2"/> - <type name="server_no_data"/> <fsummary>Read a line</fsummary> + <type name="server_no_data"/> <desc> <p>Reads a line from the standard input (<c><anno>IoDevice</anno></c>), prompting it with <c><anno>Prompt</anno></c>. It returns:</p> @@ -299,8 +300,8 @@ <func> <name name="read" arity="1"/> <name name="read" arity="2"/> - <type name="server_no_data"/> <fsummary>Read a term</fsummary> + <type name="server_no_data"/> <desc> <p>Reads a term <c><anno>Term</anno></c> from the standard input (<c><anno>IoDevice</anno></c>), prompting it with <c><anno>Prompt</anno></c>. It @@ -329,8 +330,8 @@ <func> <name name="read" arity="3"/> <name name="read" arity="4"/> - <type name="server_no_data"/> <fsummary>Read a term</fsummary> + <type name="server_no_data"/> <desc> <p>Reads a term <c><anno>Term</anno></c> from <c><anno>IoDevice</anno></c>, prompting it with <c><anno>Prompt</anno></c>. Reading starts at location @@ -505,7 +506,8 @@ ok <p>Writes the data with standard syntax in the same way as <c>~w</c>, but breaks terms whose printed representation is longer than one line into many lines and indents each - line sensibly. It also tries to detect lists of + line sensibly. Left justification is not supported. + It also tries to detect lists of printable characters and to output these as strings. The Unicode translation modifier is used for determining what characters are printable. For example:</p> @@ -696,8 +698,8 @@ ok <func> <name name="fread" arity="2"/> <name name="fread" arity="3"/> - <type name="server_no_data"/> <fsummary>Read formatted input</fsummary> + <type name="server_no_data"/> <desc> <p>Reads characters from the standard input (<c><anno>IoDevice</anno></c>), prompting it with <c><anno>Prompt</anno></c>. Interprets the characters in @@ -868,8 +870,8 @@ enter><input>:</input> <input>alan</input> <input>:</input> <input>joe</in <name name="scan_erl_exprs" arity="2"/> <name name="scan_erl_exprs" arity="3"/> <name name="scan_erl_exprs" arity="4"/> - <type name="server_no_data"/> <fsummary>Read and tokenize Erlang expressions</fsummary> + <type name="server_no_data"/> <desc> <p>Reads data from the standard input (<c>IoDevice</c>), prompting it with <c>Prompt</c>. Reading starts at location @@ -917,8 +919,8 @@ enter><input>1.0er.</input> <name name="scan_erl_form" arity="2"/> <name name="scan_erl_form" arity="3"/> <name name="scan_erl_form" arity="4"/> - <type name="server_no_data"/> <fsummary>Read and tokenize an Erlang form</fsummary> + <type name="server_no_data"/> <desc> <p>Reads data from the standard input (<c><anno>IoDevice</anno></c>), prompting it with <c><anno>Prompt</anno></c>. Starts reading @@ -937,9 +939,9 @@ enter><input>1.0er.</input> <name name="parse_erl_exprs" arity="2"/> <name name="parse_erl_exprs" arity="3"/> <name name="parse_erl_exprs" arity="4"/> + <fsummary>Read, tokenize and parse Erlang expressions</fsummary> <type name="parse_ret"/> <type name="server_no_data"/> - <fsummary>Read, tokenize and parse Erlang expressions</fsummary> <desc> <p>Reads data from the standard input (<c><anno>IoDevice</anno></c>), prompting it with @@ -988,9 +990,9 @@ enter><input>abc("hey".</input> <name name="parse_erl_form" arity="2"/> <name name="parse_erl_form" arity="3"/> <name name="parse_erl_form" arity="4"/> + <fsummary>Read, tokenize and parse an Erlang form</fsummary> <type name="parse_form_ret"/> <type name="server_no_data"/> - <fsummary>Read, tokenize and parse an Erlang form</fsummary> <desc> <p>Reads data from the standard input (<c><anno>IoDevice</anno></c>), prompting it with <c><anno>Prompt</anno></c>. Starts reading at diff --git a/lib/stdlib/doc/src/io_lib.xml b/lib/stdlib/doc/src/io_lib.xml index 3312b08064..b22ec15a0c 100644 --- a/lib/stdlib/doc/src/io_lib.xml +++ b/lib/stdlib/doc/src/io_lib.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -59,6 +60,35 @@ <datatype> <name name="latin1_string"/> </datatype> + <datatype> + <name name="format_spec"/> + <desc><p>Description:</p> + <list type="bulleted"> + <item><p><c>control_char</c> is the type of control + sequence: <c>$P</c>, <c>$w</c>, and so on;</p> + </item> + <item><p><c>args</c> is a list of the arguments used by the + control sequence, or an empty list if the control sequence + does not take any arguments;</p> + </item> + <item><p><c>width</c> is the field width;</p> + </item> + <item><p><c>adjust</c> is the adjustment;</p> + </item> + <item><p><c>precision</c> is the precision of the printed + argument;</p> + </item> + <item><p><c>pad_char</c> is the padding character;</p> + </item> + <item><p><c>encoding</c> is set to <c>true</c> if the translation + modifier <c>t</c> is present;</p> + </item> + <item><p><c>strings</c> is set to <c>false</c> if the modifier + <c>l</c> is present.</p> + </item> + </list> + </desc> + </datatype> </datatypes> <funcs> <func> @@ -260,6 +290,45 @@ </desc> </func> <func> + <name name="scan_format" arity="2"/> + <fsummary>Parse all control sequences in the format string</fsummary> + <desc> + <p>Returns a list corresponding to the given format string, + where control sequences have been replaced with + corresponding tuples. This list can be passed to <seealso + marker="#build_text/1">io_lib:build_text/1</seealso> to have + the same effect as <c>io_lib:format(Format, Args)</c>, or to + <seealso + marker="#unscan_format/1">io_lib:unscan_format/1</seealso> + in order to get the corresponding pair of <c>Format</c> and + <c>Args</c> (with every <c>*</c> and corresponding argument + expanded to numeric values).</p> + <p>A typical use of this function is to replace unbounded-size + control sequences like <c>~w</c> and <c>~p</c> with the + depth-limited variants <c>~W</c> and <c>~P</c> before + formatting to text, e.g. in a logger.</p> + </desc> + </func> + <func> + <name name="unscan_format" arity="1"/> + <fsummary>Revert a pre-parsed format list to a plain character list + and a list of arguments</fsummary> + <desc> + <p>See <seealso + marker="#scan_format/2">io_lib:scan_format/2</seealso> for + details.</p> + </desc> + </func> + <func> + <name name="build_text" arity="1"/> + <fsummary>Build the output text for a pre-parsed format list</fsummary> + <desc> + <p>See <seealso + marker="#scan_format/2">io_lib:scan_format/2</seealso> for + details.</p> + </desc> + </func> + <func> <name name="indentation" arity="2"/> <fsummary>Indentation after printing string</fsummary> <desc> diff --git a/lib/stdlib/doc/src/io_protocol.xml b/lib/stdlib/doc/src/io_protocol.xml index 21da404c35..f2a669a49a 100644 --- a/lib/stdlib/doc/src/io_protocol.xml +++ b/lib/stdlib/doc/src/io_protocol.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>1999</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/lib.xml b/lib/stdlib/doc/src/lib.xml index 30f164826c..ac41987eaf 100644 --- a/lib/stdlib/doc/src/lib.xml +++ b/lib/stdlib/doc/src/lib.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/lists.xml b/lib/stdlib/doc/src/lists.xml index ee3c51c62c..03d0063599 100644 --- a/lib/stdlib/doc/src/lists.xml +++ b/lib/stdlib/doc/src/lists.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -176,7 +177,7 @@ filtermap(Fun, List1) -> false -> Acc; true -> [Elem|Acc]; {true,Value} -> [Value|Acc] - end, + end end, [], List1).</code> <p>Example:</p> <pre> @@ -261,6 +262,21 @@ flatmap(Fun, List1) -> </desc> </func> <func> + <name name="join" arity="2"/> + <fsummary>Insert an element between elements in a list</fsummary> + <desc> + <p>Inserts <c><anno>Sep</anno></c> between each element in <c><anno>List1</anno></c>. Has no + effect on the empty list and on a singleton list. For example:</p> + <pre> +> <input>lists:join(x, [a,b,c]).</input> +[a,x,b,x,c] +> <input>lists:join(x, [a]).</input> +[a] +> <input>lists:join(x, []).</input> +[]</pre> + </desc> + </func> + <func> <name name="foreach" arity="2"/> <fsummary>Apply a function to each element of a list</fsummary> <desc> @@ -282,8 +298,8 @@ flatmap(Fun, List1) -> </func> <func> <name name="keyfind" arity="3"/> - <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc> <fsummary>Search for an element in a list of tuples</fsummary> + <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc> <desc> <p>Searches the list of tuples <c><anno>TupleList</anno></c> for a tuple whose <c><anno>N</anno></c>th element compares equal to <c><anno>Key</anno></c>. @@ -310,8 +326,8 @@ flatmap(Fun, List1) -> </func> <func> <name name="keymember" arity="3"/> - <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc> <fsummary>Test for membership of a list of tuples</fsummary> + <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc> <desc> <p>Returns <c>true</c> if there is a tuple in <c><anno>TupleList</anno></c> whose <c><anno>N</anno></c>th element compares equal to <c><anno>Key</anno></c>, otherwise @@ -345,8 +361,8 @@ flatmap(Fun, List1) -> </func> <func> <name name="keysearch" arity="3"/> - <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc> <fsummary>Search for an element in a list of tuples</fsummary> + <type_desc variable="N">1..tuple_size(<anno>Tuple</anno>)</type_desc> <desc> <p>Searches the list of tuples <c><anno>TupleList</anno></c> for a tuple whose <c><anno>N</anno></c>th element compares equal to <c><anno>Key</anno></c>. diff --git a/lib/stdlib/doc/src/log_mf_h.xml b/lib/stdlib/doc/src/log_mf_h.xml index 3ef659f579..65622e52f5 100644 --- a/lib/stdlib/doc/src/log_mf_h.xml +++ b/lib/stdlib/doc/src/log_mf_h.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>1996</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> diff --git a/lib/stdlib/doc/src/maps.xml b/lib/stdlib/doc/src/maps.xml index f766c843be..bf45461e2b 100644 --- a/lib/stdlib/doc/src/maps.xml +++ b/lib/stdlib/doc/src/maps.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2013</year><year>2014</year> + <year>2013</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> <title>maps</title> <prepared>Björn-Egil Dahlberg</prepared> @@ -33,6 +34,28 @@ <funcs> <func> + <name name="filter" arity="2"/> + <fsummary>Choose pairs which satisfy a predicate</fsummary> + <desc> + <p> + Returns a map <c><anno>Map2</anno></c> for which predicate + <c><anno>Pred</anno></c> holds true in <c><anno>Map1</anno></c>. + </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if + <c><anno>Map1</anno></c> is not a map or with <c>badarg</c> if + <c><anno>Pred</anno></c> is not a function of arity 2. + </p> + <p>Example:</p> + <code type="none"> +> M = #{a => 2, b => 3, c=> 4, "a" => 1, "b" => 2, "c" => 4}, + Pred = fun(K,V) -> is_atom(K) andalso (V rem 2) =:= 0 end, + maps:filter(Pred,M). +#{a => 2,c => 4} </code> + </desc> + </func> + + <func> <name name="find" arity="2"/> <fsummary></fsummary> <desc> @@ -40,6 +63,9 @@ Returns a tuple <c>{ok, Value}</c> where <c><anno>Value</anno></c> is the value associated with <c><anno>Key</anno></c>, or <c>error</c> if no value is associated with <c><anno>Key</anno></c> in <c><anno>Map</anno></c>. </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map</anno></c> is not a map. + </p> <p>Example:</p> <code type="none"> > Map = #{"hi" => 42}, @@ -95,8 +121,10 @@ <p> Returns the value <c><anno>Value</anno></c> associated with <c><anno>Key</anno></c> if <c><anno>Map</anno></c> contains <c><anno>Key</anno></c>. - If no value is associated with <c><anno>Key</anno></c> then the call will - fail with an exception. + </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map</anno></c> is not a map, + or with a <c>{badkey,Key}</c> exception if no value is associated with <c><anno>Key</anno></c>. </p> <p>Example:</p> <code type="none"> @@ -116,6 +144,10 @@ <c><anno>Map</anno></c> contains <c><anno>Key</anno></c>. If no value is associated with <c><anno>Key</anno></c> then returns <c><anno>Default</anno></c>. </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map</anno></c> is not a map. + + </p> <p>Example:</p> <code type="none"> > Map = #{ key1 => val1, key2 => val2 }. @@ -134,7 +166,9 @@ val1 <p> Returns <c>true</c> if map <c><anno>Map</anno></c> contains <c><anno>Key</anno></c> and returns <c>false</c> if it does not contain the <c><anno>Key</anno></c>. - The function will fail with an exception if <c><anno>Map</anno></c> is not a Map. + </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map</anno></c> is not a map. </p> <p>Example:</p> <code type="none"> @@ -154,6 +188,9 @@ false</code> <p> Returns a complete list of keys, in arbitrary order, which resides within <c><anno>Map</anno></c>. </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map</anno></c> is not a map. + </p> <p>Example:</p> <code type="none"> > Map = #{42 => value_three,1337 => "value two","a" => 1}, @@ -189,6 +226,10 @@ false</code> Merges two maps into a single map <c><anno>Map3</anno></c>. If two keys exists in both maps the value in <c><anno>Map1</anno></c> will be superseded by the value in <c><anno>Map2</anno></c>. </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map1</anno></c> or + <c><anno>Map2</anno></c> is not a map. + </p> <p>Example:</p> <code type="none"> > Map1 = #{a => "value_one", b => "value_two"}, @@ -222,6 +263,10 @@ false</code> replaced by value <c><anno>Value</anno></c>. The function returns a new map <c><anno>Map2</anno></c> containing the new association and the old associations in <c><anno>Map1</anno></c>. </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map1</anno></c> is not a map. + </p> + <p>Example:</p> <code type="none"> > Map = #{"a" => 1}. @@ -241,6 +286,9 @@ false</code> The function removes the <c><anno>Key</anno></c>, if it exists, and its associated value from <c><anno>Map1</anno></c> and returns a new map <c><anno>Map2</anno></c> without key <c><anno>Key</anno></c>. </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map1</anno></c> is not a map. + </p> <p>Example:</p> <code type="none"> > Map = #{"a" => 1}. @@ -253,6 +301,30 @@ false</code> </func> <func> + <name name="take" arity="2"/> + <fsummary></fsummary> + <desc> + <p> + The function removes the <c><anno>Key</anno></c>, if it exists, and its associated value from + <c><anno>Map1</anno></c> and returns a tuple with the removed <c><anno>Value</anno></c> and + the new map <c><anno>Map2</anno></c> without key <c><anno>Key</anno></c>. + If the key does not exist <c>error</c> is returned. + </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map1</anno></c> is not a map. + </p> + <p>Example:</p> + <code type="none"> +> Map = #{"a" => "hello", "b" => "world"}. +#{"a" => "hello", "b" => "world"} +> maps:take("a",Map). +{"hello",#{"b" => "world"}} +> maps:take("does not exist",Map). +error</code> + </desc> + </func> + + <func> <name name="size" arity="1"/> <fsummary></fsummary> <desc> @@ -276,6 +348,9 @@ false</code> The fuction returns a list of pairs representing the key-value associations of <c><anno>Map</anno></c>, where the pairs, <c>[{K1,V1}, ..., {Kn,Vn}]</c>, are returned in arbitrary order. </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map</anno></c> is not a map. + </p> <p>Example:</p> <code type="none"> > Map = #{42 => value_three,1337 => "value two","a" => 1}, @@ -291,8 +366,11 @@ false</code> <p> If <c><anno>Key</anno></c> exists in <c><anno>Map1</anno></c> the old associated value is replaced by value <c><anno>Value</anno></c>. The function returns a new map <c><anno>Map2</anno></c> containing - the new associated value. If <c><anno>Key</anno></c> does not exist in <c><anno>Map1</anno></c> an exception is - generated. + the new associated value. + </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map1</anno></c> is not a map, + or with a <c>{badkey,Key}</c> exception if no value is associated with <c><anno>Key</anno></c>. </p> <p>Example:</p> <code type="none"> @@ -303,12 +381,51 @@ false</code> </desc> </func> + <func> + <name name="update_with" arity="3"/> + <fsummary></fsummary> + <desc> + <p>Update a value in a <c><anno>Map1</anno></c> associated with <c><anno>Key</anno></c> by + calling <c><anno>Fun</anno></c> on the old value to get a new value. An exception + <c>{badkey,<anno>Key</anno>}</c> is generated if + <c><anno>Key</anno></c> is not present in the map.</p> + <p>Example:</p> + <code type="none"> +> Map = #{"counter" => 1}, + Fun = fun(V) -> V + 1 end, + maps:update_with("counter",Fun,Map). +#{"counter" => 2}</code> + </desc> + </func> + + <func> + <name name="update_with" arity="4"/> + <fsummary></fsummary> + <desc> + <p>Update a value in a <c><anno>Map1</anno></c> associated with <c><anno>Key</anno></c> by + calling <c><anno>Fun</anno></c> on the old value to get a new value. + If <c><anno>Key</anno></c> is not present + in <c><anno>Map1</anno></c> then <c><anno>Init</anno></c> will be associated with + <c><anno>Key</anno></c>. + </p> + <p>Example:</p> + <code type="none"> +> Map = #{"counter" => 1}, + Fun = fun(V) -> V + 1 end, + maps:update_with("new counter",Fun,42,Map). +#{"counter" => 1,"new counter" => 42}</code> + </desc> + </func> + <func> <name name="values" arity="1"/> <fsummary></fsummary> <desc> <p> - Returns a complete list of values, in arbitrary order, contained in map <c>M</c>. + Returns a complete list of values, in arbitrary order, contained in map <c>Map</c>. + </p> + <p> + The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map</anno></c> is not a map. </p> <p>Example:</p> <code type="none"> diff --git a/lib/stdlib/doc/src/math.xml b/lib/stdlib/doc/src/math.xml index 43cd20e726..38084638f6 100644 --- a/lib/stdlib/doc/src/math.xml +++ b/lib/stdlib/doc/src/math.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>1996</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> @@ -67,12 +68,13 @@ <name name="atanh" arity="1"/> <name name="exp" arity="1"/> <name name="log" arity="1"/> + <name name="log2" arity="1"/> <name name="log10" arity="1"/> <name name="pow" arity="2"/> <name name="sqrt" arity="1"/> + <fsummary>Diverse math functions</fsummary> <type variable="X" name_i="7"/> <type variable="Y" name_i="7"/> - <fsummary>Diverse math functions</fsummary> <desc> <p>A collection of math functions which return floats. Arguments are numbers. </p> diff --git a/lib/stdlib/doc/src/ms_transform.xml b/lib/stdlib/doc/src/ms_transform.xml index e89dd41f26..84712486ea 100644 --- a/lib/stdlib/doc/src/ms_transform.xml +++ b/lib/stdlib/doc/src/ms_transform.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2002</year><year>2013</year> + <year>2002</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/notes.xml b/lib/stdlib/doc/src/notes.xml index 8582bfc9f9..87f5335723 100644 --- a/lib/stdlib/doc/src/notes.xml +++ b/lib/stdlib/doc/src/notes.xml @@ -4,20 +4,21 @@ <chapter> <header> <copyright> - <year>2004</year><year>2013</year> + <year>2004</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -30,6 +31,577 @@ </header> <p>This document describes the changes made to the STDLIB application.</p> +<section><title>STDLIB 2.8</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix evaluation in matching of bound map key variables in + the interpreter.</p> + <p> + Prior to this patch, the following code would not + evaluate: <c>X = key,(fun(#{X := value}) -> true + end)(#{X => value})</c></p> + <p> + Own Id: OTP-13218</p> + </item> + <item> + <p> Fix <c>erl_eval</c> not using non-local function + handler. </p> + <p> + Own Id: OTP-13228 Aux Id: ERL-32 </p> + </item> + <item> + <p> The Erlang Code Linter no longer crashes if there is + a <c>-deprecated()</c> attribute but no <c>-module()</c> + declaration. </p> + <p> + Own Id: OTP-13230 Aux Id: ERL-62 </p> + </item> + <item> + <p> + The timestamp in the result returned by <c>dets:info(Tab, + safe_fixed)</c> was unintentionally broken as a result of + the time API rewrites in OTP 18.0. This has now been + fixed.</p> + <p> + Own Id: OTP-13239 Aux Id: OTP-11997 </p> + </item> + <item> + <p>A rare race condition in <c>beam_lib</c> when using + encrypted abstract format has been eliminated.</p> + <p> + Own Id: OTP-13278</p> + </item> + <item> + <p> + Improved maps:with/2 and maps:without/2 algorithms</p> + <p> + The new implementation speeds up the execution + significantly for all sizes of input.</p> + <p> + Own Id: OTP-13376</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Time warp safety improvements.</p> + <p> + Introduced the options <c>monotonic_timestamp</c>, and + <c>strict_monotonic_timestamp</c> to the trace, + sequential trace, and system profile functionality. This + since the already existing <c>timestamp</c> option is not + time warp safe.</p> + <p> + Introduced the option <c>safe_fixed_monotonic_time</c> to + <c>ets:info/2</c> and <c>dets:info/2</c>. This since the + already existing <c>safe_fixed</c> option is not time + warp safe.</p> + <p> + Own Id: OTP-13222 Aux Id: OTP-11997 </p> + </item> + <item> + <p> + In the shell Ctrl+W (delete word) will no longer consider + "." as being part of a word.</p> + <p> + Own Id: OTP-13281</p> + </item> + </list> + </section> + +</section> + +<section><title>STDLIB 2.7</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p>The Erlang Pretty Printer uses <c>::</c> for function + type constraints.</p> <p>A bug concerning pretty printing + of annotated type union elements in map pair types has + been fixed.</p> <p>Some minor issues regarding the + documentation of types and specs have been corrected.</p> + <p> + Own Id: OTP-13084</p> + </item> + <item> + <p> The shell command <c>rp</c> prints strings as lists + of integers if pretty printing of lists is set to + <c>false</c>. </p> + <p> + Own Id: OTP-13145</p> + </item> + <item> + <p> + The shell would crash if a bit syntax expression with + conflicting types were given (e.g. if a field type was + given as '<c>integer-binary</c>'). (Thanks to Aleksei + Magusev for reporting this bug.)</p> + <p> + Own Id: OTP-13157</p> + </item> + <item> + <p>The <c>rand:export_seed/0</c> would never return + '<c>undefined</c>' even if no seed has previously been + created. Fixed to return '<c>undefined</c>' if there is + no seed in the process dictionary.</p> + <p> + Own Id: OTP-13162</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Add support for the Delete, Home and End keys in the + Erlang shell.</p> + <p> + Own Id: OTP-13032</p> + </item> + <item> + <p><c>beam_lib:all_chunks/1</c> and + <c>beam_lib:build_module/1</c> have been documented.</p> + <p> + Own Id: OTP-13063</p> + </item> + </list> + </section> + +</section> + +<section><title>STDLIB 2.6</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> In OTP 18.0, <c>qlc</c> does not handle syntax errors + well. This bug has been fixed. </p> + <p> + Own Id: OTP-12946</p> + </item> + <item> + <p> + Optimize zip:unzip/2 when uncompressing to memory.</p> + <p> + Own Id: OTP-12950</p> + </item> + <item> + <p> + The <c>stdlib</c> reference manual is updated to show + correct information about the return value of + <c>gen_fsm:reply/2</c>.</p> + <p> + Own Id: OTP-12973</p> + </item> + <item> + <p>re:split2,3 and re:replace/3,4 now correctly handles + pre-compiled patterns that have been compiled using the + '<c>unicode</c>' option.</p> + <p> + Own Id: OTP-12977</p> + </item> + <item> + <p> + Export <c>shell:catch_exception/1</c> as documented.</p> + <p> + Own Id: OTP-12990</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p>A mechanism for limiting the amount of text that the + built-in error logger events will produce has been + introduced. It is useful for limiting both the size of + log files and the CPU time used to produce them.</p> + <p>This mechanism is experimental in the sense that it + may be changed if it turns out that it does not solve the + problem it is supposed to solve. In that case, there may + be backward incompatible improvements to this + mechanism.</p> + <p>See the documentation for the config parameter + <c>error_logger_format_depth</c> in the Kernel + application for information about how to turn on this + feature.</p> + <p> + Own Id: OTP-12864</p> + </item> + </list> + </section> + +</section> + +<section><title>STDLIB 2.5</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix handling of single dot in filename:join/2</p> + <p> + The reference manual says that filename:join(A,B) is + equivalent to filename:join([A,B]). In some rare cases + this turns out not to be true. For example:</p> + <p> + <c>filename:join("/a/.","b") -> "/a/./b"</c> vs + <c>filename:join(["/a/.","b"]) -> "/a/b"</c>.</p> + <p> + This has been corrected. A single dot is now only kept if + it occurs at the very beginning or the very end of the + resulting path.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-12158</p> + </item> + <item> + <p> + The undocumented option <c>generic_debug</c> for + <c>gen_server</c> has been removed.</p> + <p> + Own Id: OTP-12183</p> + </item> + <item> + <p> + erl_lint:icrt_export/4 has been rewritten to make the + code really follow the scoping rules of Erlang, and not + just in most situations by accident.</p> + <p> + Own Id: OTP-12186</p> + </item> + <item> + <p> + Add 'trim_all' option to binary:split/3</p> + <p> + This option can be set to remove _ALL_ empty parts of the + result of a call to binary:split/3.</p> + <p> + Own Id: OTP-12301</p> + </item> + <item> + <p> Correct orddict(3) regarding evaluation order of + <c>fold()</c> and <c>map()</c>. </p> + <p> + Own Id: OTP-12651 Aux Id: seq12832 </p> + </item> + <item> + <p> + Correct <c>maps</c> module error exceptions </p> + <p> + Bad input to maps module function will now yield the + following exceptions:</p> + <list> <item>{badmap, NotMap}, or </item> <item>badarg.</item> + </list> + <p> + Own Id: OTP-12657</p> + </item> + <item> + <p> + It is now possible to paste text in JCL mode (using + Ctrl-Y) that has been copied in the previous shell + session. Also a bug that caused the JCL mode to crash + when pasting text has been fixed.</p> + <p> + Own Id: OTP-12673</p> + </item> + <item> + <p> + Add <c>uptime()</c> shell command.</p> + <p> + Own Id: OTP-12752</p> + </item> + <item> + <p> + Cache nowarn_bif_clash functions in erl_lint.</p> + <p> + This patch stores nowarn_bif_clash in the lint record. By + using erlc +'{eprof,lint_module}' when compiling the + erlang parser, we noticed the time spent on + nowarn_function/2 reduced from 30% to 0.01%.</p> + <p> + Own Id: OTP-12754</p> + </item> + <item> + <p> + Optimize the Erlang Code Linter by using the cached + filename information.</p> + <p> + Own Id: OTP-12772</p> + </item> + <item> + <p> + If a child of a simple_one_for_one returns ignore from + its start function no longer store the child for any + restart type. It is not possible to restart or delete the + child because the supervisor is a simple_one_for_one.</p> + <p> + Own Id: OTP-12793</p> + </item> + <item> + <p> + Make <c>ets:file2tab</c> preserve enabled + <c>read_concurrency</c> and <c>write_concurrency</c> + options for tables.</p> + <p> + Own Id: OTP-12814</p> + </item> + <item> + <p> + There are many cases where user code needs to be able to + distinguish between a socket that was closed normally and + one that was aborted. Setting the option + {show_econnreset, true} enables the user to receive + ECONNRESET errors on both active and passive sockets.</p> + <p> + Own Id: OTP-12841</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Allow maps for supervisor flags and child specs</p> + <p> + Earlier, supervisor flags and child specs were given as + tuples. While this is kept for backwards compatibility, + it is now also allowed to give these parameters as maps, + see <seealso + marker="stdlib:supervisor#sup_flags">sup_flags</seealso> + and <seealso + marker="stdlib:supervisor#child_spec">child_spec</seealso>.</p> + <p> + Own Id: OTP-11043</p> + </item> + <item> + <p> + A new system message, <c>terminate</c>, is added. This + can be sent with <c>sys:terminate/2,3</c>. If the + receiving process handles system messages properly it + will terminate shortly after receiving this message.</p> + <p> + The new function <c>proc_lib:stop/1,3</c> utilizes this + new system message and monitors the receiving process in + order to facilitate a synchronous stop mechanism for + 'special processes'.</p> + <p> + <c>proc_lib:stop/1,3</c> is used by the following + functions:</p> + <list> <item><c>gen_server:stop/1,3</c> (new)</item> + <item><c>gen_fsm:stop/1,3</c> (new)</item> + <item><c>gen_event:stop/1,3</c> (modified to be + synchronous)</item> <item><c>wx_object:stop/1,3</c> + (new)</item> </list> + <p> + Own Id: OTP-11173 Aux Id: seq12353 </p> + </item> + <item> + <p> + Remove the <c>pg</c> module, which has been deprecated + through OTP-17, is now removed from the STDLIB + application. This module has been marked experimental for + more than 15 years, and has largely been superseded by + the <c>pg2</c> module from the Kernel application.</p> + <p> + Own Id: OTP-11907</p> + </item> + <item> + <p> + New BIF: <c>erlang:get_keys/0</c>, lists all keys + associated with the process dictionary. Note: + <c>erlang:get_keys/0</c> is auto-imported.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-12151 Aux Id: seq12521 </p> + </item> + <item> + <p> Add three new functions to <c>io_lib</c>-- + <c>scan_format/2</c>, <c>unscan_format/1</c>, and + <c>build_text/1</c>-- which expose the parsed form of the + format control sequences to make it possible to easily + modify or filter the input to <c>io_lib:format/2</c>. + This can e.g. be used in order to replace unbounded-size + control sequences like <c>~w</c> or <c>~p</c> with + corresponding depth-limited <c>~W</c> and <c>~P</c> + before doing the actual formatting. </p> + <p> + Own Id: OTP-12167</p> + </item> + <item> + <p> Introduce the <c>erl_anno</c> module, an abstraction + of the second element of tokens and tuples in the + abstract format. </p> + <p> + Own Id: OTP-12195</p> + </item> + <item> + <p> + Support variables as Map keys in expressions and patterns</p> + <p>Erlang will accept any expression as keys in Map + expressions and it will accept literals or bound + variables as keys in Map patterns.</p> + <p> + Own Id: OTP-12218</p> + </item> + <item> + <p> The last traces of Mnemosyne Rules have been removed. + </p> + <p> + Own Id: OTP-12257</p> + </item> + <item> + <p> + Properly support maps in match_specs</p> + <p> + Own Id: OTP-12270</p> + </item> + <item> + <p> + New function <c>ets:take/2</c>. Works the same as + <c>ets:delete/2</c> but also returns the deleted + object(s).</p> + <p> + Own Id: OTP-12309</p> + </item> + <item> + <p><c>string:tokens/2</c> is somewhat faster, especially + if the list of separators only contains one separator + character.</p> + <p> + Own Id: OTP-12422 Aux Id: seq12774 </p> + </item> + <item> + <p>The documentation of the Abstract Format (in the ERTS + User's Guide) has been updated with types and + specification. (Thanks to Anthony Ramine.) </p> <p> The + explicit representation of parentheses used in types of + the abstract format has been removed. Instead the new + functions <c>erl_parse:type_inop_prec()</c> and + <c>erl_parse:type_preop_prec()</c> can be used for + inserting parentheses where needed. </p> + <p> + Own Id: OTP-12492</p> + </item> + <item> + <p> + Prevent zip:zip_open/[12] from leaking file descriptors + if parent process dies.</p> + <p> + Own Id: OTP-12566</p> + </item> + <item> + <p> + Add a new random number generator, see <c>rand</c> + module. It have better characteristics and an improved + interface.</p> + <p> + Own Id: OTP-12586 Aux Id: OTP-12501, OTP-12502 </p> + </item> + <item> + <p><c>filename:split/1</c> when given an empty binary + will now return an empty list, to make it consistent with + return value when given an empty list.</p> + <p> + Own Id: OTP-12716</p> + </item> + <item> + <p> + Add <c>sync</c> option to <c>ets:tab2file/3</c>.</p> + <p> + Own Id: OTP-12737 Aux Id: seq12805 </p> + </item> + <item> + <p> Add functions <c>gb_sets:iterator_from()</c> and + <c>gb_trees:iterator_from()</c>. (Thanks to Kirill + Kinduk.) </p> + <p> + Own Id: OTP-12742</p> + </item> + <item> + <p> + Add <c>maps:filter/2</c> to maps module.</p> + <p> + Own Id: OTP-12745</p> + </item> + <item> + <p> + Change some internal data structures to Maps in order to + speed up compilation time. Measured speed up is around + 10%-15%.</p> + <p> + Own Id: OTP-12774</p> + </item> + <item> + <p> Update <c>orddict</c> to use parameterized types and + specs. (Thanks to UENISHI Kota.) </p> + <p> + Own Id: OTP-12785</p> + </item> + <item> + <p>The assert macros in <c>eunit</c> has been moved out + to <c>stdlib/include/assert.hrl</c>. This files get + included by <c>eunit.hrl</c>. Thus, nothing changes for + eunit users, but the asserts can now also be included + separately.</p> + <p> + Own Id: OTP-12808</p> + </item> + </list> + </section> + +</section> + +<section><title>STDLIB 2.4</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Behaviour of character types \d, \w and \s has always + been to not match characters with value above 255, not + 128, i.e. they are limited to ISO-Latin-1 and not ASCII</p> + <p> + Own Id: OTP-12521</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + c:m/1 now displays the module's MD5 sum.</p> + <p> + Own Id: OTP-12500</p> + </item> + <item> + <p> + Make ets:i/1 handle binary input from IO server.</p> + <p> + Own Id: OTP-12550</p> + </item> + </list> + </section> + +</section> + <section><title>STDLIB 2.3</title> <section><title>Fixed Bugs and Malfunctions</title> @@ -441,8 +1013,7 @@ also implemented by the generic behaviours <c>gen_server</c>, <c>gen_event</c> and <c>gen_fsm</c>.</p> <p> - The potential incompatibility refers to</p> - <p> + The potential incompatibility refers to:</p> <list> <item>The previous behaviour of intercepting the system message and passing a tuple of size 2 as the last argument to <c>sys:handle_system_msg/6</c> is no longer @@ -450,7 +1021,7 @@ <c>StateFun</c> in <c>sys:replace_state/2,3</c> fails is changed from being totally silent to possibly (if the callback module does not catch) throw an exception in the - client process.</item> </list></p> + client process.</item> </list> <p> (Thanks to James Fish and Steve Vinoski)</p> <p> @@ -612,22 +1183,28 @@ <p> EEP43: New data type - Maps</p> <p> - With Maps you may for instance: <taglist> <item><c>M0 = - #{ a => 1, b => 2}, % create - associations</c></item> <item><c>M1 = M0#{ a := 10 }, % - update values</c></item> <item><c>M2 = M1#{ "hi" => - "hello"}, % add new associations</c></item> <item><c>#{ - "hi" := V1, a := V2, b := V3} = M2. % match keys with - values</c></item> </taglist></p> + With Maps you may for instance:</p> + <taglist> + <tag/> <item><c>M0 = #{ a => 1, b => 2}, % create + associations</c></item> + <tag/><item><c>M1 = M0#{ a := 10 }, % update values</c></item> + <tag/><item><c>M2 = M1#{ "hi" => + "hello"}, % add new associations</c></item> + <tag/><item><c>#{ "hi" := V1, a := V2, b := V3} = M2. + % match keys with values</c></item> + </taglist> <p> For information on how to use Maps please see Map Expressions in the <seealso marker="doc/reference_manual:expressions#map_expressions"> Reference Manual</seealso>.</p> <p> The current implementation is without the following - features: <taglist> <item>No variable keys</item> - <item>No single value access</item> <item>No map - comprehensions</item> </taglist></p> + features:</p> + <taglist> + <tag/><item>No variable keys</item> + <tag/><item>No single value access</item> + <tag/><item>No map comprehensions</item> + </taglist> <p> Note that Maps is <em>experimental</em> during OTP 17.0.</p> <p> @@ -1378,13 +1955,15 @@ supervisor or for the problematic child.</p> <p> This introduces some incompatibilities in stdlib due to - new return values from supervisor: <list> + new return values from supervisor:</p> + <list> <item>restart_child/2 can now return {error,restarting}</item> <item>delete_child/2 can now return {error,restarting}</item> <item>which_children/1 returns a list of {Id,Child,Type,Mods}, where Child, in addition to the old pid() or 'undefined', now also can be - 'restarting'.</item> </list></p> + 'restarting'.</item> + </list> <p> *** POTENTIAL INCOMPATIBILITY ***</p> <p> @@ -1400,10 +1979,10 @@ Own Id: OTP-9782 Aux Id: seq11964 </p> </item> <item> - <p> Use universal time as base in error logger + <p> Use universal time as base in error logger</p> <p> Previous conversion used the deprecated - calendar:local_time_to_universal_time/1 </p></p> + calendar:local_time_to_universal_time/1 </p> <p> Own Id: OTP-9854</p> </item> @@ -2160,10 +2739,10 @@ Own Id: OTP-8989 Aux Id: seq11741 </p> </item> <item> - <p>Fix exception generation in the io module + <p>Fix exception generation in the io module</p> <p> Some functions did not generate correct badarg exception - on a badarg exception.</p></p> + on a badarg exception.</p> <p> Own Id: OTP-9045</p> </item> diff --git a/lib/stdlib/doc/src/notes_history.xml b/lib/stdlib/doc/src/notes_history.xml index 328855f6dd..efcb5ac7df 100644 --- a/lib/stdlib/doc/src/notes_history.xml +++ b/lib/stdlib/doc/src/notes_history.xml @@ -4,20 +4,21 @@ <chapter> <header> <copyright> - <year>2006</year><year>2013</year> + <year>2006</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/orddict.xml b/lib/stdlib/doc/src/orddict.xml index 6d1702bc59..950f688735 100644 --- a/lib/stdlib/doc/src/orddict.xml +++ b/lib/stdlib/doc/src/orddict.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2000</year><year>2013</year> + <year>2000</year><year>2015</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -48,8 +49,11 @@ <datatypes> <datatype> - <name name="orddict"/> - <desc><p>As returned by new/0.</p></desc> + <name name="orddict" n_vars="2"/> + <desc><p>Dictionary as returned by <c>new/0</c>.</p></desc> + </datatype> + <datatype> + <name name="orddict" n_vars="0"/> </datatype> </datatypes> @@ -125,8 +129,7 @@ <c><anno>Orddict</anno></c> together with an extra argument <c>Acc</c> (short for accumulator). <c><anno>Fun</anno></c> must return a new accumulator which is passed to the next call. <c><anno>Acc0</anno></c> is - returned if the list is empty. The evaluation order is - undefined.</p> + returned if the list is empty.</p> </desc> </func> <func> @@ -150,8 +153,7 @@ <fsummary>Map a function over a dictionary</fsummary> <desc> <p><c>map</c> calls <c><anno>Fun</anno></c> on successive keys and values - of <c><anno>Orddict1</anno></c> to return a new value for each key. - The evaluation order is undefined.</p> + of <c><anno>Orddict1</anno></c> to return a new value for each key.</p> </desc> </func> <func> diff --git a/lib/stdlib/doc/src/ordsets.xml b/lib/stdlib/doc/src/ordsets.xml index 277c1c32ab..0d5d618b66 100644 --- a/lib/stdlib/doc/src/ordsets.xml +++ b/lib/stdlib/doc/src/ordsets.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/part.xml b/lib/stdlib/doc/src/part.xml index 5589d11e3e..15b7bd4a1d 100644 --- a/lib/stdlib/doc/src/part.xml +++ b/lib/stdlib/doc/src/part.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>1996</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> diff --git a/lib/stdlib/doc/src/part_notes.xml b/lib/stdlib/doc/src/part_notes.xml index cdd35ac370..461de749dd 100644 --- a/lib/stdlib/doc/src/part_notes.xml +++ b/lib/stdlib/doc/src/part_notes.xml @@ -4,20 +4,21 @@ <part xmlns:xi="http://www.w3.org/2001/XInclude"> <header> <copyright> - <year>2004</year><year>2013</year> + <year>2004</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/part_notes_history.xml b/lib/stdlib/doc/src/part_notes_history.xml index 15e0a0f1d3..8fd048a41e 100644 --- a/lib/stdlib/doc/src/part_notes_history.xml +++ b/lib/stdlib/doc/src/part_notes_history.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>2006</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> diff --git a/lib/stdlib/doc/src/pg.xml b/lib/stdlib/doc/src/pg.xml deleted file mode 100644 index a3b69884b6..0000000000 --- a/lib/stdlib/doc/src/pg.xml +++ /dev/null @@ -1,114 +0,0 @@ -<?xml version="1.0" encoding="utf-8" ?> -<!DOCTYPE erlref SYSTEM "erlref.dtd"> - -<erlref> - <header> - <copyright> - <year>1996</year> - <year>2014</year> - <holder>Ericsson AB, All Rights Reserved</holder> - </copyright> - <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. - - The Initial Developer of the Original Code is Ericsson AB. - </legalnotice> - - <title>pg</title> - <prepared></prepared> - <docno></docno> - <date></date> - <rev></rev> - </header> - <module>pg</module> - <modulesummary>Distributed, Named Process Groups</modulesummary> - <description> - <warning> - <p>This module is deprecated and will be removed in Erlang/OTP 18.</p> - </warning> - <p>This (experimental) module implements process groups. A process - group is a group of processes that can be accessed by a common - name. For example, a group named <c>foobar</c> can include a set - of processes as members of this group and they can be located on - different nodes.</p> - <p>When messages are sent to the named group, all members of - the group receive the message. The messages are serialized. If - the process <c>P1</c> sends the message <c>M1</c> to the group, - and process <c>P2</c> simultaneously sends message <c>M2</c>, then - all members of the group receive the two messages in the same - order. If members of a group terminate, they are automatically - removed from the group.</p> - <p>This module is not complete. The module is inspired by the ISIS - system and the causal order protocol of the ISIS system should - also be implemented. At the moment, all messages are serialized - by sending them through a group master process.</p> - </description> - <funcs> - <func> - <name name="create" arity="1"/> - <fsummary>Create an empty group</fsummary> - <desc> - <p>Creates an empty group named <c><anno>PgName</anno></c> on the current - node.</p> - </desc> - </func> - <func> - <name name="create" arity="2"/> - <fsummary>Create an empty group on another node</fsummary> - <desc> - <p>Creates an empty group named <c><anno>PgName</anno></c> on the node - <c><anno>Node</anno></c>.</p> - </desc> - </func> - <func> - <name name="join" arity="2"/> - <fsummary>Join a pid to a process group</fsummary> - <desc> - <p>Joins the pid <c><anno>Pid</anno></c> to the process group - <c><anno>PgName</anno></c>. - Returns a list of all old members of the group.</p> - </desc> - </func> - <func> - <name name="send" arity="2"/> - <fsummary>Send a message to all members of a process group</fsummary> - <desc> - <p>Sends the tuple <c>{pg_message, From, PgName, Msg}</c> to - all members of the process group <c><anno>PgName</anno></c>.</p> - <p>Failure: <c>{badarg, {<anno>PgName</anno>, <anno>Msg</anno>}}</c> - if <c><anno>PgName</anno></c> is - not a process group (a globally registered name).</p> - </desc> - </func> - <func> - <name name="esend" arity="2"/> - <fsummary>Send a message to all members of a process group, except ourselves</fsummary> - <desc> - <p>Sends the tuple <c>{pg_message, From, PgName, Msg}</c> to - all members of the process group <c><anno>PgName</anno></c>, except - ourselves.</p> - <p>Failure: <c>{badarg, {<anno>PgName</anno>, <anno>Msg</anno>}}</c> - if <c><anno>PgName</anno></c> is - not a process group (a globally registered name).</p> - </desc> - </func> - <func> - <name name="members" arity="1"/> - <fsummary>Return a list of all members of a process group</fsummary> - <desc> - <p>Returns a list of all members of the process group - <c>PgName</c>.</p> - </desc> - </func> - </funcs> -</erlref> - diff --git a/lib/stdlib/doc/src/pool.xml b/lib/stdlib/doc/src/pool.xml index 1b903984f9..d217d071da 100644 --- a/lib/stdlib/doc/src/pool.xml +++ b/lib/stdlib/doc/src/pool.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/proc_lib.xml b/lib/stdlib/doc/src/proc_lib.xml index 5bf5744622..f02b1f0651 100644 --- a/lib/stdlib/doc/src/proc_lib.xml +++ b/lib/stdlib/doc/src/proc_lib.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -33,9 +34,9 @@ <p>This module is used to start processes adhering to the <seealso marker="doc/design_principles:des_princ">OTP Design Principles</seealso>. Specifically, the functions in this module are used by the OTP standard behaviors (<c>gen_server</c>, - <c>gen_fsm</c>, ...) when starting new processes. The functions - can also be used to start <em>special processes</em>, user - defined processes which comply to the OTP design principles. See + <c>gen_fsm</c>, <c>gen_statem</c>, ...) when starting new processes. + The functions can also be used to start <em>special processes</em>, + user defined processes which comply to the OTP design principles. See <seealso marker="doc/design_principles:spec_proc">Sys and Proc_Lib</seealso> in OTP Design Principles for an example.</p> <p>Some useful information is initialized when a process starts. The registered names, or the process identifiers, of the parent @@ -72,6 +73,13 @@ <name name="priority_level"/> </datatype> <datatype> + <name name="max_heap_size"/> + <desc> + <p>See <seealso marker="erts:erlang#process_flag_max_heap_size"> + erlang:process_flag(max_heap_size, MaxHeapSize)</seealso>.</p> + </desc> + </datatype> + <datatype> <name name="dict_or_pid"/> </datatype> </datatypes> @@ -173,7 +181,7 @@ <name name="init_ack" arity="2"/> <fsummary>Used by a process when it has started.</fsummary> <desc> - <p>This function must used by a process that has been started by + <p>This function must be used by a process that has been started by a <seealso marker="#start/3">start[_link]/3,4,5</seealso> function. It tells <c><anno>Parent</anno></c> that the process has initialized itself, has started, or has failed to initialize @@ -226,6 +234,17 @@ init(Parent) -> </desc> </func> <func> + <name name="format" arity="3"/> + <fsummary>Format a crash report.</fsummary> + <desc> + <p>This function can be used by a user defined event handler to + format a crash report. When <anno>Depth</anno> is given as an + positive integer, it will be used in the format string to + limit the output as follows: <c>io_lib:format("~P", + [Term,<anno>Depth</anno>])</c>.</p> + </desc> + </func> + <func> <name name="initial_call" arity="1"/> <fsummary>Extract the initial call of a <c>proc_lib</c>spawned process.</fsummary> <desc> @@ -298,6 +317,40 @@ init(Parent) -> <c>proc_lib</c> functions.</p> </desc> </func> + <func> + <name name="stop" arity="1"/> + <fsummary>Terminate a process synchronously.</fsummary> + <type variable="Process"/> + <desc> + <p>Equivalent to <seealso marker="#stop/3">stop(Process, + normal, infinity)</seealso>.</p> + </desc> + </func> + <func> + <name name="stop" arity="3"/> + <fsummary>Terminate a process synchronously.</fsummary> + <type variable="Process"/> + <type variable="Reason"/> + <type variable="Timeout"/> + <desc> + <p>Orders the process to exit with the given <c>Reason</c> and + waits for it to terminate.</p> + <p>The function returns <c>ok</c> if the process exits with + the given <c>Reason</c> within <c>Timeout</c> + milliseconds.</p> + <p>If the call times out, a <c>timeout</c> exception is + raised.</p> + <p>If the process does not exist, a <c>noproc</c> + exception is raised.</p> + <p>The implementation of this function is based on the + <c>terminate</c> system message, and requires that the + process handles system messages correctly. + See <seealso marker="sys">sys(3)</seealso> + and <seealso marker="doc/design_principles:spec_proc">OTP + Design Principles</seealso> for information about system + messages.</p> + </desc> + </func> </funcs> <section> diff --git a/lib/stdlib/doc/src/proplists.xml b/lib/stdlib/doc/src/proplists.xml index 1655133b2b..832df9556a 100644 --- a/lib/stdlib/doc/src/proplists.xml +++ b/lib/stdlib/doc/src/proplists.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2002</year><year>2013</year> + <year>2002</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/qlc.xml b/lib/stdlib/doc/src/qlc.xml index 8682936c08..2966e94ec1 100644 --- a/lib/stdlib/doc/src/qlc.xml +++ b/lib/stdlib/doc/src/qlc.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2004</year><year>2013</year> + <year>2004</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/queue.xml b/lib/stdlib/doc/src/queue.xml index 9c994154d4..e1a96f5c65 100644 --- a/lib/stdlib/doc/src/queue.xml +++ b/lib/stdlib/doc/src/queue.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2014</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -95,9 +96,6 @@ </datatype> <datatype> <name name="queue" n_vars="0"/> - <desc> - <p><c>queue()</c> is equivalent to <c>queue(term())</c>.</p> - </desc> </datatype> </datatypes> diff --git a/lib/stdlib/doc/src/rand.xml b/lib/stdlib/doc/src/rand.xml new file mode 100644 index 0000000000..50057259c6 --- /dev/null +++ b/lib/stdlib/doc/src/rand.xml @@ -0,0 +1,247 @@ +<?xml version="1.0" encoding="utf-8" ?> +<!DOCTYPE erlref SYSTEM "erlref.dtd"> + +<erlref> + <header> + <copyright> + <year>2015</year> + <holder>Ericsson AB. All Rights Reserved.</holder> + </copyright> + <legalnotice> + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + + </legalnotice> + + <title>rand</title> + <prepared></prepared> + <responsible></responsible> + <docno>1</docno> + <approved></approved> + <checked></checked> + <date></date> + <rev>A</rev> + <file>rand.xml</file> + </header> + <module>rand</module> + <modulesummary>Pseudo random number generation</modulesummary> + <description> + <p>Random number generator.</p> + + <p>The module contains several different algorithms and can be + extended with more in the future. The current uniform + distribution algorithms uses the + <url href="http://xorshift.di.unimi.it"> + scrambled Xorshift algorithms by Sebastiano Vigna</url> and the + normal distribution algorithm uses the + <url href="http://www.jstatsoft.org/v05/i08"> + Ziggurat Method by Marsaglia and Tsang</url>. + </p> + + <p>The implemented algorithms are:</p> + <taglist> + <tag><c>exsplus</c></tag> <item>Xorshift116+, 58 bits precision and period of 2^116-1.</item> + <tag><c>exs64</c></tag> <item>Xorshift64*, 64 bits precision and a period of 2^64-1.</item> + <tag><c>exs1024</c></tag> <item>Xorshift1024*, 64 bits precision and a period of 2^1024-1.</item> + </taglist> + + <p>The current default algorithm is <c>exsplus</c>. The default + may change in future. If a specific algorithm is required make + sure to always use <seealso marker="#seed-1">seed/1</seealso> + to initialize the state. + </p> + + <p>Every time a random number is requested, a state is used to + calculate it and a new state produced. The state can either be + implicit or it can be an explicit argument and return value. + </p> + + <p>The functions with implicit state use the process dictionary + variable <c>rand_seed</c> to remember the current state.</p> + + <p>If a process calls <seealso marker="#uniform-0">uniform/0</seealso> or + <seealso marker="#uniform-1">uniform/1</seealso> without + setting a seed first, <seealso marker="#seed-1">seed/1</seealso> + is called automatically with the default algorithm and creates a + non-constant seed.</p> + + <p>The functions with explicit state never use the process + dictionary.</p> + + <p>Examples:</p> + <pre> + %% Simple usage. Creates and seeds the default algorithm + %% with a non-constant seed if not already done. + R0 = rand:uniform(), + R1 = rand:uniform(), + + %% Use a given algorithm. + _ = rand:seed(exs1024), + R2 = rand:uniform(), + + %% Use a given algorithm with a constant seed. + _ = rand:seed(exs1024, {123, 123534, 345345}), + R3 = rand:uniform(), + + %% Use the functional api with non-constant seed. + S0 = rand:seed_s(exsplus), + {R4, S1} = rand:uniform_s(S0), + + %% Create a standard normal deviate. + {SND0, S2} = rand:normal_s(S1), + </pre> + + <note><p>This random number generator is not cryptographically + strong. If a strong cryptographic random number generator is + needed, use one of functions in the + <seealso marker="crypto:crypto">crypto</seealso> + module, for example <c>crypto:strong_rand_bytes/1</c>.</p></note> + </description> + <datatypes> + <datatype> + <name name="alg"/> + </datatype> + + <datatype> + <name name="state"/> + <desc><p>Algorithm dependent state.</p></desc> + </datatype> + + <datatype> + <name name="export_state"/> + <desc><p>Algorithm dependent state which can be printed or saved to file.</p></desc> + </datatype> + </datatypes> + + <funcs> + <func> + <name name="seed" arity="1"/> + <fsummary>Seed random number generator</fsummary> + <desc> + <marker id="seed-1"/> + <p>Seeds random number generation with the given algorithm and time dependent + data if <anno>AlgOrExpState</anno> is an algorithm.</p> + <p>Otherwise recreates the exported seed in the process + dictionary, and returns the state. + <em>See also:</em> <seealso marker="#export_seed-0">export_seed/0</seealso>.</p> + </desc> + </func> + <func> + <name name="seed_s" arity="1"/> + <fsummary>Seed random number generator</fsummary> + <desc> + <p>Seeds random number generation with the given algorithm and time dependent + data if <anno>AlgOrExpState</anno> is an algorithm.</p> + <p>Otherwise recreates the exported seed and returns the state. + <em>See also:</em> <seealso marker="#export_seed-0">export_seed/0</seealso>.</p> + </desc> + </func> + <func> + <name name="seed" arity="2"/> + <fsummary>Seed the random number generation</fsummary> + <desc> + <p>Seeds random number generation with the given algorithm and + integers in the process dictionary and returns + the state.</p> + </desc> + </func> + <func> + <name name="seed_s" arity="2"/> + <fsummary>Seed the random number generation</fsummary> + <desc> + <p>Seeds random number generation with the given algorithm and + integers and returns the state.</p> + </desc> + </func> + + <func> + <name name="export_seed" arity="0"/> + <fsummary>Export the random number generation state</fsummary> + <desc><marker id="export_seed-0"/> + <p>Returns the random number state in an external format. + To be used with <seealso marker="#seed-1">seed/1</seealso>.</p> + </desc> + </func> + + <func> + <name name="export_seed_s" arity="1"/> + <fsummary>Export the random number generation state</fsummary> + <desc><marker id="export_seed_s-1"/> + <p>Returns the random number generator state in an external format. + To be used with <seealso marker="#seed-1">seed/1</seealso>.</p> + </desc> + </func> + + <func> + <name name="uniform" arity="0"/> + <fsummary>Return a random float</fsummary> + <desc> + <marker id="uniform-0"/> + <p>Returns a random float uniformly distributed in the value + range <c>0.0 < <anno>X</anno> < 1.0 </c> and + updates the state in the process dictionary.</p> + </desc> + </func> + <func> + <name name="uniform_s" arity="1"/> + <fsummary>Return a random float</fsummary> + <desc> + <p>Given a state, <c>uniform_s/1</c> returns a random float + uniformly distributed in the value range <c>0.0 < + <anno>X</anno> < 1.0</c> and a new state.</p> + </desc> + </func> + + <func> + <name name="uniform" arity="1"/> + <fsummary>Return a random integer</fsummary> + <desc> + <marker id="uniform-1"/> + <p>Given an integer <c><anno>N</anno> >= 1</c>, + <c>uniform/1</c> returns a random integer uniformly + distributed in the value range + <c>1 <= <anno>X</anno> <= <anno>N</anno></c> and + updates the state in the process dictionary.</p> + </desc> + </func> + <func> + <name name="uniform_s" arity="2"/> + <fsummary>Return a random integer</fsummary> + <desc> + <p>Given an integer <c><anno>N</anno> >= 1</c> and a state, + <c>uniform_s/2</c> returns a random integer uniformly + distributed in the value range <c>1 <= <anno>X</anno> <= + <anno>N</anno></c> and a new state.</p> + </desc> + </func> + + <func> + <name name="normal" arity="0"/> + <fsummary>Return a standard normal distributed random float</fsummary> + <desc> + <p>Returns a standard normal deviate float (that is, the mean + is 0 and the standard deviation is 1) and updates the state in + the process dictionary.</p> + </desc> + </func> + <func> + <name name="normal_s" arity="1"/> + <fsummary>Return a standard normal distributed random float</fsummary> + <desc> + <p>Given a state, <c>normal_s/1</c> returns a standard normal + deviate float (that is, the mean is 0 and the standard + deviation is 1) and a new state.</p> + </desc> + </func> + + </funcs> +</erlref> diff --git a/lib/stdlib/doc/src/random.xml b/lib/stdlib/doc/src/random.xml index e001058e19..dea4e43c95 100644 --- a/lib/stdlib/doc/src/random.xml +++ b/lib/stdlib/doc/src/random.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -47,7 +48,10 @@ tuple of three integers.</p> <p>It should be noted that this random number generator is not cryptographically strong. If a strong cryptographic random number generator is needed for - example <c>crypto:rand_bytes/1</c> could be used instead.</p> + example <c>crypto:strong_rand_bytes/1</c> could be used instead.</p> + <note><p>The new and improved <seealso + marker="stdlib:rand">rand</seealso> module should be used + instead of this module.</p></note> </description> <datatypes> <datatype> @@ -70,12 +74,17 @@ <desc> <p>Seeds random number generation with integer values in the process dictionary, and returns the old state.</p> - <p>One way of obtaining a seed is to use the BIF <c>now/0</c>:</p> + <p>One easy way of obtaining a unique value to seed with is to:</p> <code type="none"> - ... - {A1,A2,A3} = now(), - random:seed(A1, A2, A3), - ...</code> +random:seed(erlang:phash2([node()]), + erlang:monotonic_time(), + erlang:unique_integer())</code> + <p>See <seealso marker="erts:erlang#phash2/1"> + erlang:phash2/1</seealso>, <seealso marker="erts:erlang#node/0"> + node/0</seealso>, <seealso marker="erts:erlang#monotonic_time/0"> + erlang:monotonic_time/0</seealso>, and + <seealso marker="erts:erlang#unique_integer/0"> + erlang:unique_integer/0</seealso>) for details.</p> </desc> </func> <func> @@ -139,7 +148,7 @@ <p>The implementation changed in R15. Upgrading to R15 will break applications that expect a specific output for a given seed. The output is still deterministic number series, but different compared to releases - older than R15. The seed <c>{0,0,0}</c> will for example no longer + older than R15. The seed <c>{0,0,0}</c> will, for example, no longer produce a flawed series of only zeros.</p> </section> </erlref> diff --git a/lib/stdlib/doc/src/re.xml b/lib/stdlib/doc/src/re.xml index a1833f6a51..fda79d51d5 100644 --- a/lib/stdlib/doc/src/re.xml +++ b/lib/stdlib/doc/src/re.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>2007</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved on line at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> @@ -150,7 +151,11 @@ This option makes it possible to include comments inside complicated patterns. N <tag><c>no_start_optimize</c></tag> <item>This option disables optimization that may malfunction if "Special start-of-pattern items" are present in the regular expression. A typical example would be when matching "DEFABC" against "(*COMMIT)ABC", where the start optimization of PCRE would skip the subject up to the "A" and would never realize that the (*COMMIT) instruction should have made the matching fail. This option is only relevant if you use "start-of-pattern items", as discussed in the section "PCRE regular expression details" below.</item> <tag><c>ucp</c></tag> - <item>Specifies that Unicode Character Properties should be used when resolving \B, \b, \D, \d, \S, \s, \Wand \w. Without this flag, only ISO-Latin-1 properties are used. Using Unicode properties hurts performance, but is semantically correct when working with Unicode characters beyond the ISO-Latin-1 range.</item> + <item>Specifies that Unicode Character Properties should be used when + resolving \B, \b, \D, \d, \S, \s, \W and \w. Without this flag, only + ISO-Latin-1 properties are used. Using Unicode properties hurts + performance, but is semantically correct when working with Unicode + characters beyond the ISO-Latin-1 range.</item> <tag><c>never_utf</c></tag> <item>Specifies that the (*UTF) and/or (*UTF8) "start-of-pattern items" are forbidden. This flag can not be combined with <c>unicode</c>. Useful if ISO-Latin-1 patterns from an external source are to be compiled.</item> </taglist> @@ -200,8 +205,8 @@ This option makes it possible to include comments inside complicated patterns. N </func> <func> <name name="run" arity="3"/> - <type_desc variable="CompileOpt">See <seealso marker="#compile_options">compile/2</seealso> above.</type_desc> <fsummary>Match a subject against regular expression and capture subpatterns</fsummary> + <type_desc variable="CompileOpt">See <seealso marker="#compile_options">compile/2</seealso> above.</type_desc> <desc> <p>Executes a regexp matching, returning <c>match/{match, @@ -876,11 +881,11 @@ nomatch </desc> </func> </funcs> - - <marker id="regexp_syntax"></marker> + <section> <title>PERL LIKE REGULAR EXPRESSIONS SYNTAX</title> - <p>The following sections contain reference material for the + <p><marker id="regexp_syntax"></marker> + The following sections contain reference material for the regular expressions used by this module. The regular expression reference is based on the PCRE documentation, with changes in cases where the re module behaves differently to the PCRE library.</p> @@ -966,7 +971,7 @@ appearance causes an error. </quote> <p>This has the same effect as setting the <c>ucp</c> option: it causes sequences such as \d and \w to use Unicode properties to determine character types, -instead of recognizing only characters with codes less than 128 via a lookup +instead of recognizing only characters with codes less than 256 via a lookup table. </p> @@ -1307,7 +1312,8 @@ By default, the definition of letters and digits is controlled by PCRE's low-valued character tables, in Erlang's case (and without the <c>unicode</c> option), the ISO-Latin-1 character set.</p> -<p>By default, in <c>unicode</c> mode, characters with values greater than 128 never match +<p>By default, in <c>unicode</c> mode, characters with values greater than 255, +i.e. all characters outside the ISO-Latin-1 character set, never match \d, \s, or \w, and always match \D, \S, and \W. These sequences retain their original meanings from before UTF support was available, mainly for efficiency reasons. However, if the <c>ucp</c> option is set, the behaviour is changed so that Unicode @@ -1954,10 +1960,10 @@ can be included in a class as a literal string of data units, or by using the upper case and lower case versions, so for example, a caseless [aeiou] matches "A" as well as "a", and a caseless [^aeiou] does not match "A", whereas a caseful version would. In a UTF mode, PCRE always understands the concept of -case for characters whose values are less than 128, so caseless matching is +case for characters whose values are less than 256, so caseless matching is always possible. For characters with higher values, the concept of case is supported if PCRE is compiled with Unicode property support, but not otherwise. -If you want to use caseless matching in a UTF mode for characters 128 and +If you want to use caseless matching in a UTF mode for characters 256 and above, you must ensure that PCRE is compiled with Unicode property support as well as with UTF support.</p> @@ -1989,7 +1995,7 @@ matches the letters in either case. For example, [W-c] is equivalent to [][\\^_`wxyzabc], matched caselessly, and in a non-UTF mode, if character tables for a French locale are in use, [\xc8-\xcb] matches accented E characters in both cases. In UTF modes, PCRE supports the concept of case for -characters with values greater than 128 only when it is compiled with Unicode +characters with values greater than 255 only when it is compiled with Unicode property support.</p> <p>The character escape sequences \d, \D, \h, \H, \p, \P, \s, \S, \v, @@ -2062,9 +2068,9 @@ by a ^ character after the colon. For example,</p> syntax [.ch.] and [=ch=] where "ch" is a "collating element", but these are not supported, and an error is given if they are encountered.</p> -<p>By default, in UTF modes, characters with values greater than 128 do not match +<p>By default, in UTF modes, characters with values greater than 255 do not match any of the POSIX character classes. However, if the PCRE_UCP option is passed -to <b>pcre_compile()</b>, some of the classes are changed so that Unicode +to <em>pcre_compile()</em>, some of the classes are changed so that Unicode character properties are used. This is achieved by replacing the POSIX classes by other sequences, as follows:</p> @@ -2072,16 +2078,16 @@ by other sequences, as follows:</p> <tag>[:alnum:]</tag> <item>becomes <em>\p{Xan}</em></item> <tag>[:alpha:]</tag> <item>becomes <em>\p{L}</em></item> <tag>[:blank:]</tag> <item>becomes <em>\h</em></item> - <tag>[:digit:</tag>] <item>becomes <em>\p{Nd}</em></item> + <tag>[:digit:]</tag> <item>becomes <em>\p{Nd}</em></item> <tag>[:lower:]</tag> <item>becomes <em>\p{Ll}</em></item> <tag>[:space:]</tag> <item>becomes <em>\p{Xps}</em></item> - <tag>[:upper:</tag>] <item>becomes <em>\p{Lu}</em></item> + <tag>[:upper:]</tag> <item>becomes <em>\p{Lu}</em></item> <tag>[:word:]</tag> <item>becomes <em>\p{Xwd}</em></item> </taglist> <p>Negated versions, such as [:^alpha:] use \P instead of \p. The other POSIX classes are unchanged, and match only characters with code points less than -128.</p> +256.</p> </section> @@ -3053,7 +3059,7 @@ default newline convention is in force:</p> <quote><p> abc #comment \n still comment</p></quote> -<p>On encountering the # character, <b>pcre_compile()</b> skips along, looking for +<p>On encountering the # character, <em>pcre_compile()</em> skips along, looking for a newline in the pattern. The sequence \n is still literal at this stage, so it does not terminate the comment. Only an actual character with the code value 0x0a (the default newline) does so.</p> diff --git a/lib/stdlib/doc/src/ref_man.xml b/lib/stdlib/doc/src/ref_man.xml index 6c35578bdf..404873ea32 100644 --- a/lib/stdlib/doc/src/ref_man.xml +++ b/lib/stdlib/doc/src/ref_man.xml @@ -4,20 +4,21 @@ <application xmlns:xi="http://www.w3.org/2001/XInclude"> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -35,6 +36,7 @@ </description> <xi:include href="stdlib_app.xml"/> <xi:include href="array.xml"/> + <xi:include href="assert_hrl.xml"/> <xi:include href="base64.xml"/> <xi:include href="beam_lib.xml"/> <xi:include href="binary.xml"/> @@ -45,6 +47,7 @@ <xi:include href="digraph.xml"/> <xi:include href="digraph_utils.xml"/> <xi:include href="epp.xml"/> + <xi:include href="erl_anno.xml"/> <xi:include href="erl_eval.xml"/> <xi:include href="erl_expand_records.xml"/> <xi:include href="erl_id_trans.xml"/> @@ -63,6 +66,7 @@ <xi:include href="gen_event.xml"/> <xi:include href="gen_fsm.xml"/> <xi:include href="gen_server.xml"/> + <xi:include href="gen_statem.xml"/> <xi:include href="io.xml"/> <xi:include href="io_lib.xml"/> <xi:include href="lib.xml"/> @@ -73,12 +77,12 @@ <xi:include href="ms_transform.xml"/> <xi:include href="orddict.xml"/> <xi:include href="ordsets.xml"/> - <xi:include href="pg.xml"/> <xi:include href="pool.xml"/> <xi:include href="proc_lib.xml"/> <xi:include href="proplists.xml"/> <xi:include href="qlc.xml"/> <xi:include href="queue.xml"/> + <xi:include href="rand.xml"/> <xi:include href="random.xml"/> <xi:include href="re.xml"/> <xi:include href="sets.xml"/> diff --git a/lib/stdlib/doc/src/sets.xml b/lib/stdlib/doc/src/sets.xml index c5b8dce4b7..531d18fbef 100644 --- a/lib/stdlib/doc/src/sets.xml +++ b/lib/stdlib/doc/src/sets.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2000</year><year>2014</year> + <year>2000</year><year>2015</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -50,9 +51,6 @@ </datatype> <datatype> <name name="set" n_vars="0"/> - <desc> - <p><c>set()</c> is equivalent to <c>set(term())</c>.</p> - </desc> </datatype> </datatypes> <funcs> @@ -65,7 +63,7 @@ </func> <func> <name name="is_set" arity="1"/> - <fsummary>Test for an <c>Set</c></fsummary> + <fsummary>Test for a <c>Set</c></fsummary> <desc> <p>Returns <c>true</c> if <c><anno>Set</anno></c> is a set of elements, otherwise <c>false</c>.</p> @@ -80,21 +78,22 @@ </func> <func> <name name="to_list" arity="1"/> - <fsummary>Convert an <c>Set</c>into a list</fsummary> + <fsummary>Convert a <c>Set</c>into a list</fsummary> <desc> - <p>Returns the elements of <c><anno>Set</anno></c> as a list.</p> + <p>Returns the elements of <c><anno>Set</anno></c> as a list. + The order of the returned elements is undefined.</p> </desc> </func> <func> <name name="from_list" arity="1"/> - <fsummary>Convert a list into an <c>Set</c></fsummary> + <fsummary>Convert a list into a <c>Set</c></fsummary> <desc> - <p>Returns an set of the elements in <c><anno>List</anno></c>.</p> + <p>Returns a set of the elements in <c><anno>List</anno></c>.</p> </desc> </func> <func> <name name="is_element" arity="2"/> - <fsummary>Test for membership of an <c>Set</c></fsummary> + <fsummary>Test for membership of a <c>Set</c></fsummary> <desc> <p>Returns <c>true</c> if <c><anno>Element</anno></c> is an element of <c><anno>Set</anno></c>, otherwise <c>false</c>.</p> @@ -102,7 +101,7 @@ </func> <func> <name name="add_element" arity="2"/> - <fsummary>Add an element to an <c>Set</c></fsummary> + <fsummary>Add an element to a <c>Set</c></fsummary> <desc> <p>Returns a new set formed from <c><anno>Set1</anno></c> with <c><anno>Element</anno></c> inserted.</p> @@ -110,7 +109,7 @@ </func> <func> <name name="del_element" arity="2"/> - <fsummary>Remove an element from an <c>Set</c></fsummary> + <fsummary>Remove an element from a <c>Set</c></fsummary> <desc> <p>Returns <c><anno>Set1</anno></c>, but with <c><anno>Element</anno></c> removed.</p> </desc> @@ -175,7 +174,8 @@ <fsummary>Fold over set elements</fsummary> <desc> <p>Fold <c><anno>Function</anno></c> over every element in <c><anno>Set</anno></c> - returning the final value of the accumulator.</p> + returning the final value of the accumulator. + The evaluation order is undefined.</p> </desc> </func> <func> diff --git a/lib/stdlib/doc/src/shell.xml b/lib/stdlib/doc/src/shell.xml index 3ca80ed900..65c441203c 100644 --- a/lib/stdlib/doc/src/shell.xml +++ b/lib/stdlib/doc/src/shell.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/shell_default.xml b/lib/stdlib/doc/src/shell_default.xml index 2355ba92f9..4a90b7d7cc 100644 --- a/lib/stdlib/doc/src/shell_default.xml +++ b/lib/stdlib/doc/src/shell_default.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>1996</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> diff --git a/lib/stdlib/doc/src/slave.xml b/lib/stdlib/doc/src/slave.xml index f5d0436a20..244822568b 100644 --- a/lib/stdlib/doc/src/slave.xml +++ b/lib/stdlib/doc/src/slave.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/sofs.xml b/lib/stdlib/doc/src/sofs.xml index 6c97fd0bc0..cf0855bc85 100644 --- a/lib/stdlib/doc/src/sofs.xml +++ b/lib/stdlib/doc/src/sofs.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2001</year><year>2013</year> + <year>2001</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -397,8 +398,9 @@ fun(S) -> sofs:partition(1, S) end </datatype> <datatype> <!-- Parameterized opaque types are NYI: --> - <name><marker id="type-tuple_of">tuple_of(T)</marker></name> - <desc><p>A tuple where the elements are of type <c>T</c>.</p></desc> + <name>tuple_of(T)</name> + <desc><p><marker id="type-tuple_of"/> + A tuple where the elements are of type <c>T</c>.</p></desc> </datatype> </datatypes> <funcs> diff --git a/lib/stdlib/doc/src/specs.xml b/lib/stdlib/doc/src/specs.xml index 60a04ed5e7..45b207b13d 100644 --- a/lib/stdlib/doc/src/specs.xml +++ b/lib/stdlib/doc/src/specs.xml @@ -11,6 +11,7 @@ <xi:include href="../specs/specs_digraph.xml"/> <xi:include href="../specs/specs_digraph_utils.xml"/> <xi:include href="../specs/specs_epp.xml"/> + <xi:include href="../specs/specs_erl_anno.xml"/> <xi:include href="../specs/specs_erl_eval.xml"/> <xi:include href="../specs/specs_erl_expand_records.xml"/> <xi:include href="../specs/specs_erl_id_trans.xml"/> @@ -29,6 +30,7 @@ <xi:include href="../specs/specs_gen_event.xml"/> <xi:include href="../specs/specs_gen_fsm.xml"/> <xi:include href="../specs/specs_gen_server.xml"/> + <xi:include href="../specs/specs_gen_statem.xml"/> <xi:include href="../specs/specs_io.xml"/> <xi:include href="../specs/specs_io_lib.xml"/> <xi:include href="../specs/specs_lib.xml"/> @@ -39,12 +41,12 @@ <xi:include href="../specs/specs_ms_transform.xml"/> <xi:include href="../specs/specs_orddict.xml"/> <xi:include href="../specs/specs_ordsets.xml"/> - <xi:include href="../specs/specs_pg.xml"/> <xi:include href="../specs/specs_pool.xml"/> <xi:include href="../specs/specs_proc_lib.xml"/> <xi:include href="../specs/specs_proplists.xml"/> <xi:include href="../specs/specs_qlc.xml"/> <xi:include href="../specs/specs_queue.xml"/> + <xi:include href="../specs/specs_rand.xml"/> <xi:include href="../specs/specs_random.xml"/> <xi:include href="../specs/specs_re.xml"/> <xi:include href="../specs/specs_sets.xml"/> diff --git a/lib/stdlib/doc/src/stdlib_app.xml b/lib/stdlib/doc/src/stdlib_app.xml index de4cc65396..5508be9c5d 100644 --- a/lib/stdlib/doc/src/stdlib_app.xml +++ b/lib/stdlib/doc/src/stdlib_app.xml @@ -4,20 +4,21 @@ <appref> <header> <copyright> - <year>2005</year><year>2013</year> + <year>2005</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/string.xml b/lib/stdlib/doc/src/string.xml index b05d5cbc08..a9ecb60244 100644 --- a/lib/stdlib/doc/src/string.xml +++ b/lib/stdlib/doc/src/string.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2014</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/supervisor.xml b/lib/stdlib/doc/src/supervisor.xml index 3a5027d595..29e5a732d5 100644 --- a/lib/stdlib/doc/src/supervisor.xml +++ b/lib/stdlib/doc/src/supervisor.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2014</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -33,16 +34,16 @@ <p>A behaviour module for implementing a supervisor, a process which supervises other processes called child processes. A child process can either be another supervisor or a worker process. - Worker processes are normally implemented using one of - the <c>gen_event</c>, <c>gen_fsm</c>, or <c>gen_server</c> + Worker processes are normally implemented using one of the + <c>gen_event</c>, <c>gen_fsm</c>, <c>gen_statem</c> or <c>gen_server</c> behaviours. A supervisor implemented using this module will have a standard set of interface functions and include functionality - for tracing and error reporting. Supervisors are used to build an + for tracing and error reporting. Supervisors are used to build a hierarchical process structure called a supervision tree, a nice way to structure a fault tolerant application. Refer to <em>OTP Design Principles</em> for more information.</p> - <p>A supervisor assumes the definition of which child processes to - supervise to be located in a callback module exporting a + <p>A supervisor expects the definition of which child processes to + supervise to be specified in a callback module exporting a pre-defined set of functions.</p> <p>Unless otherwise stated, all functions in this module will fail if the specified supervisor does not exist or if bad arguments @@ -53,18 +54,30 @@ <title>Supervision Principles</title> <p>The supervisor is responsible for starting, stopping and monitoring its child processes. The basic idea of a supervisor is - that it should keep its child processes alive by restarting them + that it shall keep its child processes alive by restarting them when necessary.</p> - <p>The children of a supervisor is defined as a list of + <p>The children of a supervisor are defined as a list of <em>child specifications</em>. When the supervisor is started, the child processes are started in order from left to right according to this list. When the supervisor terminates, it first terminates its child processes in reversed start order, from right to left.</p> - <p>A supervisor can have one of the following <em>restart strategies</em>:</p> + <marker id="sup_flags"/> + <p>The properties of a supervisor are defined by the supervisor + flags. This is the type definition for the supervisor flags: + </p> + <pre>sup_flags() = #{strategy => strategy(), % optional + intensity => non_neg_integer(), % optional + period => pos_integer()} % optional + </pre> + <p>A supervisor can have one of the following <em>restart + strategies</em>, specified with the <c>strategy</c> key in the + above map: + </p> <list type="bulleted"> <item> <p><c>one_for_one</c> - if one child process terminates and - should be restarted, only that child process is affected.</p> + should be restarted, only that child process is + affected. This is the default restart strategy.</p> </item> <item> <p><c>one_for_all</c> - if one child process terminates and @@ -94,43 +107,53 @@ instead the child specification identifier is used, <c>terminate_child/2</c> will return <c>{error,simple_one_for_one}</c>.</p> - <p>Because a <c>simple_one_for_one</c> supervisor could have many - children, it shuts them all down at same time. So, order in which they - are stopped is not defined. For the same reason, it could have an - overhead with regards to the <c>Shutdown</c> strategy.</p> + <p>Because a <c>simple_one_for_one</c> supervisor could have + many children, it shuts them all down asynchronously. This + means that the children will do their cleanup in parallel, + and therefore the order in which they are stopped is not + defined.</p> </item> </list> <p>To prevent a supervisor from getting into an infinite loop of - child process terminations and restarts, a <em>maximum restart frequency</em> - is defined using two integer values <c>MaxR</c> - and <c>MaxT</c>. If more than <c>MaxR</c> restarts occur within - <c>MaxT</c> seconds, the supervisor terminates all child - processes and then itself. + child process terminations and restarts, a <em>maximum restart + intensity</em> is defined using two integer values specified + with the <c>intensity</c> and <c>period</c> keys in the above + map. Assuming the values <c>MaxR</c> for <c>intensity</c> + and <c>MaxT</c> for <c>period</c>, then if more than <c>MaxR</c> + restarts occur within <c>MaxT</c> seconds, the supervisor will + terminate all child processes and then itself. The default value + for <c>intensity</c> is <c>1</c>, and the default value + for <c>period</c> is <c>5</c>. </p> <marker id="child_spec"/> <p>This is the type definition of a child specification:</p> - <pre> -child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} - Id = term() - StartFunc = {M,F,A} - M = F = atom() - A = [term()] - Restart = permanent | transient | temporary - Shutdown = brutal_kill | int()>0 | infinity - Type = worker | supervisor - Modules = [Module] | dynamic - Module = atom()</pre> + <pre>child_spec() = #{id => child_id(), % mandatory + start => mfargs(), % mandatory + restart => restart(), % optional + shutdown => shutdown(), % optional + type => worker(), % optional + modules => modules()} % optional</pre> + <p>The old tuple format is kept for backwards compatibility, + see <seealso marker="#type-child_spec">child_spec()</seealso>, + but the map is preferred. + </p> <list type="bulleted"> <item> - <p><c>Id</c> is a name that is used to identify the child + <p><c>id</c> is used to identify the child specification internally by the supervisor.</p> + <p>The <c>id</c> key is mandatory.</p> + <p>Note that this identifier on occations has been called + "name". As far as possible, the terms "identifier" or "id" + are now used but in order to keep backwards compatibility, + some occurences of "name" can still be found, for example + in error messages.</p> </item> <item> - <p><c>StartFunc</c> defines the function call used to start - the child process. It should be a module-function-arguments + <p><c>start</c> defines the function call used to start the + child process. It must be a module-function-arguments tuple <c>{M,F,A}</c> used as <c>apply(M,F,A)</c>.</p> <p>The start function <em>must create and link to</em> the child - process, and should return <c>{ok,Child}</c> or + process, and must return <c>{ok,Child}</c> or <c>{ok,Child,Info}</c> where <c>Child</c> is the pid of the child process and <c>Info</c> an arbitrary term which is ignored by the supervisor.</p> @@ -143,20 +166,23 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} error tuple <c>{error,Error}</c>.</p> <p>Note that the <c>start_link</c> functions of the different behaviour modules fulfill the above requirements.</p> + <p>The <c>start</c> key is mandatory.</p> </item> <item> - <p><c>Restart</c> defines when a terminated child process - should be restarted. A <c>permanent</c> child process should - always be restarted, a <c>temporary</c> child process should + <p><c>restart</c> defines when a terminated child process + shall be restarted. A <c>permanent</c> child process will + always be restarted, a <c>temporary</c> child process will never be restarted (even when the supervisor's restart strategy is <c>rest_for_one</c> or <c>one_for_all</c> and a sibling's death causes the temporary process to be terminated) and a - <c>transient</c> child process should be restarted only if + <c>transient</c> child process will be restarted only if it terminates abnormally, i.e. with another exit reason than <c>normal</c>, <c>shutdown</c> or <c>{shutdown,Term}</c>.</p> + <p>The <c>restart</c> key is optional. If it is not given, the + default value <c>permanent</c> will be used.</p> </item> <item> - <p><c>Shutdown</c> defines how a child process should be + <p><c>shutdown</c> defines how a child process shall be terminated. <c>brutal_kill</c> means the child process will be unconditionally terminated using <c>exit(Child,kill)</c>. An integer timeout value means that the supervisor will tell @@ -166,35 +192,46 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} no exit signal is received within the specified number of milliseconds, the child process is unconditionally terminated using <c>exit(Child,kill)</c>.</p> - <p>If the child process is another supervisor, <c>Shutdown</c> + <p>If the child process is another supervisor, the shutdown time should be set to <c>infinity</c> to give the subtree ample - time to shutdown. It is also allowed to set it to <c>infinity</c>, + time to shut down. It is also allowed to set it to <c>infinity</c>, if the child process is a worker.</p> <warning> - <p>Be careful by setting the <c>Shutdown</c> strategy to + <p>Be careful when setting the shutdown time to <c>infinity</c> when the child process is a worker. Because, in this situation, the termination of the supervision tree depends on the child process, it must be implemented in a safe way and its cleanup procedure must always return.</p> </warning> <p>Note that all child processes implemented using the standard - OTP behavior modules automatically adhere to the shutdown + OTP behaviour modules automatically adhere to the shutdown protocol.</p> + <p>The <c>shutdown</c> key is optional. If it is not given, + the default value <c>5000</c> will be used if the child is + of type <c>worker</c>; and <c>infinity</c> will be used if + the child is of type <c>supervisor</c>.</p> </item> <item> - <p><c>Type</c> specifies if the child process is a supervisor or + <p><c>type</c> specifies if the child process is a supervisor or a worker.</p> + <p>The <c>type</c> key is optional. If it is not given, the + default value <c>worker</c> will be used.</p> </item> <item> - <p><c>Modules</c> is used by the release handler during code + <p><c>modules</c> is used by the release handler during code replacement to determine which processes are using a certain - module. As a rule of thumb <c>Modules</c> should be a list - with one element <c>[Module]</c>, where <c>Module</c> is - the callback module, if the child process is a supervisor, - gen_server or gen_fsm. If the child process is an event - manager (gen_event) with a dynamic set of callback modules, - <c>Modules</c> should be <c>dynamic</c>. See <em>OTP Design Principles</em> - for more information about release handling.</p> + module. As a rule of thumb, if the child process is a + <c>supervisor</c>, <c>gen_server</c>, + <c>gen_fsm</c> or <c>gen_statem</c> + this should be a list with one element <c>[Module]</c>, + where <c>Module</c> is the callback module. If the child + process is an event manager (<c>gen_event</c>) with a + dynamic set of callback modules, the value <c>dynamic</c> + shall be used. See <em>OTP Design Principles</em> for more + information about release handling.</p> + <p>The <c>modules</c> key is optional. If it is not given, it + defaults to <c>[M]</c>, where <c>M</c> comes from the + child's start <c>{M,F,A}</c></p> </item> <item> <p>Internally, the supervisor also keeps track of the pid @@ -213,11 +250,20 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} </datatype> <datatype> <name name="child_spec"/> + <desc><p>The tuple format is kept for backwards compatibility + only. A map is preferred; see more details + <seealso marker="#child_spec">above</seealso>.</p></desc> </datatype> <datatype> <name name="mfargs"/> - <desc><p><c>A</c> (the argument list) has the value - <c>undefined</c> if <c>Restart</c> is <c>temporary</c>.</p> + <desc> + <p>The value <c>undefined</c> for <c><anno>A</anno></c> (the + argument list) is only to be used internally + in <c>supervisor</c>. If the restart type of the child + is <c>temporary</c>, then the process is never to be + restarted and therefore there is no need to store the real + argument list. The value <c>undefined</c> will then be + stored instead.</p> </desc> </datatype> <datatype> @@ -233,6 +279,12 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} <name name="strategy"/> </datatype> <datatype> + <name name="sup_flags"/> + <desc><p>The tuple format is kept for backwards compatibility + only. A map is preferred; see more details + <seealso marker="#sup_flags">above</seealso>.</p></desc> + </datatype> + <datatype> <name name="sup_ref"/> </datatype> <datatype> @@ -253,20 +305,20 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} the supervisor is linked to the calling process (its supervisor).</p> <p>The created supervisor process calls <c><anno>Module</anno>:init/1</c> to - find out about restart strategy, maximum restart frequency + find out about restart strategy, maximum restart intensity and child processes. To ensure a synchronized start-up procedure, <c>start_link/2,3</c> does not return until <c><anno>Module</anno>:init/1</c> has returned and all child processes have been started.</p> - <p>If <c><anno>SupName</anno>={local,Name}</c> the supervisor is registered + <p>If <c><anno>SupName</anno>={local,Name}</c>, the supervisor is registered locally as <c>Name</c> using <c>register/2</c>. If <c><anno>SupName</anno>={global,Name}</c> the supervisor is registered globally as <c>Name</c> using <c>global:register_name/2</c>. If <c><anno>SupName</anno>={via,<anno>Module</anno>,<anno>Name</anno>}</c> the supervisor is registered as <c>Name</c> using the registry represented by - <c>Module</c>. The <c>Module</c> callback should export the functions + <c>Module</c>. The <c>Module</c> callback must export the functions <c>register_name/2</c>, <c>unregister_name/1</c> and <c>send/2</c>, - which should behave like the corresponding functions in <c>global</c>. + which shall behave like the corresponding functions in <c>global</c>. Thus, <c>{via,global,<anno>Name</anno>}</c> is a valid reference.</p> <p>If no name is provided, the supervisor is not registered.</p> <p><c><anno>Module</anno></c> is the name of the callback module.</p> @@ -274,14 +326,14 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} the argument to <c><anno>Module</anno>:init/1</c>.</p> <p>If the supervisor and its child processes are successfully created (i.e. if all child process start functions return - <c>{ok,Child}</c>, <c>{ok,Child,Info}</c>, or <c>ignore</c>) + <c>{ok,Child}</c>, <c>{ok,Child,Info}</c>, or <c>ignore</c>), the function returns <c>{ok,Pid}</c>, where <c>Pid</c> is the pid of the supervisor. If there already exists a process - with the specified <c><anno>SupName</anno></c> the function returns + with the specified <c><anno>SupName</anno></c>, the function returns <c>{error,{already_started,Pid}}</c>, where <c>Pid</c> is the pid of that process.</p> <p>If <c><anno>Module</anno>:init/1</c> returns <c>ignore</c>, this function - returns <c>ignore</c> as well and the supervisor terminates + returns <c>ignore</c> as well, and the supervisor terminates with reason <c>normal</c>. If <c><anno>Module</anno>:init/1</c> fails or returns an incorrect value, this function returns <c>{error,Term}</c> where <c>Term</c> @@ -297,13 +349,12 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} <func> <name name="start_child" arity="2"/> <fsummary>Dynamically add a child process to a supervisor.</fsummary> - <type name="child_spec"/> <type name="startchild_ret"/> <type name="startchild_err"/> <desc> <p>Dynamically adds a child specification to the supervisor <c><anno>SupRef</anno></c> which starts the corresponding child process.</p> - <p><marker id="SupRef"><c><anno>SupRef</anno></c></marker> can be:</p> + <p><marker id="SupRef"/><c><anno>SupRef</anno></c> can be:</p> <list type="bulleted"> <item>the pid,</item> <item><c>Name</c>, if the supervisor is locally registered,</item> @@ -314,35 +365,41 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} <item><c>{via,Module,Name}</c>, if the supervisor is registered through an alternative process registry.</item> </list> - <p><c><anno>ChildSpec</anno></c> should be a valid child specification + <p><c><anno>ChildSpec</anno></c> must be a valid child specification (unless the supervisor is a <c>simple_one_for_one</c> - supervisor, see below). The child process will be started by + supervisor; see below). The child process will be started by using the start function as defined in the child specification.</p> - <p>If the case of a <c>simple_one_for_one</c> supervisor, + <p>In the case of a <c>simple_one_for_one</c> supervisor, the child specification defined in <c>Module:init/1</c> will - be used and <c><anno>ChildSpec</anno></c> should instead be an arbitrary + be used, and <c><anno>ChildSpec</anno></c> shall instead be an arbitrary list of terms <c><anno>List</anno></c>. The child process will then be started by appending <c><anno>List</anno></c> to the existing start function arguments, i.e. by calling <c>apply(M, F, A++<anno>List</anno>)</c> where <c>{M,F,A}</c> is the start function defined in the child specification.</p> <p>If there already exists a child specification with - the specified <c><anno>Id</anno></c>, <c><anno>ChildSpec</anno></c> is discarded and + the specified identifier, <c><anno>ChildSpec</anno></c> is discarded, and the function returns <c>{error,already_present}</c> or <c>{error,{already_started,<anno>Child</anno>}}</c>, depending on if the corresponding child process is running or not.</p> <p>If the child process start function returns <c>{ok,<anno>Child</anno>}</c> - or <c>{ok,<anno>Child</anno>,<anno>Info</anno>}</c>, the child specification and pid is + or <c>{ok,<anno>Child</anno>,<anno>Info</anno>}</c>, the child specification and pid are added to the supervisor and the function returns the same value.</p> <p>If the child process start function returns <c>ignore</c>, - the child specification is added to the supervisor, the pid - is set to <c>undefined</c> and the function returns - <c>{ok,undefined}</c>.</p> + the child specification is added to the supervisor (unless the + supervisor is a <c>simple_one_for_one</c> supervisor, see below), + the pid is set to <c>undefined</c> and the function returns + <c>{ok,undefined}</c>. + </p> + <p>In the case of a <c>simple_one_for_one</c> supervisor, when a child + process start function returns <c>ignore</c> the functions returns + <c>{ok,undefined}</c> and no child is added to the supervisor. + </p> <p>If the child process start function returns an error tuple or an erroneous value, or if it fails, the child specification is - discarded and the function returns <c>{error,Error}</c> where + discarded, and the function returns <c>{error,Error}</c> where <c>Error</c> is a term containing information about the error and child specification.</p> </desc> @@ -366,7 +423,7 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} <p>If the child is temporary, the child specification is deleted as soon as the process terminates. This means - that <c>delete_child/2</c> has no meaning + that <c>delete_child/2</c> has no meaning, and <c>restart_child/2</c> can not be used for these children.</p> @@ -375,13 +432,13 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} process is alive, but is not a child of the given supervisor, the function will return <c>{error,not_found}</c>. If the child specification - identifier is given instead instead of a <c>pid()</c>, the + identifier is given instead of a <c>pid()</c>, the function will return <c>{error,simple_one_for_one}</c>.</p> <p>If successful, the function returns <c>ok</c>. If there is no child specification with the specified <c><anno>Id</anno></c>, the function returns <c>{error,not_found}</c>.</p> - <p>See <c>start_child/2</c> for a description of - <c><anno>SupRef</anno></c>.</p> + <p>See <seealso marker="#SupRef"><c>start_child/2</c></seealso> + for a description of <c><anno>SupRef</anno></c>.</p> </desc> </func> <func> @@ -390,15 +447,15 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} <desc> <p>Tells the supervisor <c><anno>SupRef</anno></c> to delete the child specification identified by <c><anno>Id</anno></c>. The corresponding child - process must not be running, use <c>terminate_child/2</c> to + process must not be running. Use <c>terminate_child/2</c> to terminate it.</p> - <p>See <seealso marker="#SupRef"><c>start_child/2</c></seealso> for a description of - <c>SupRef</c>.</p> + <p>See <seealso marker="#SupRef"><c>start_child/2</c></seealso> + for a description of <c><anno>SupRef</anno></c>.</p> <p>If successful, the function returns <c>ok</c>. If the child specification identified by <c><anno>Id</anno></c> exists but the corresponding child process is running or about to be restarted, the function returns <c>{error,running}</c> or - <c>{error,restarting}</c> respectively. If the child specification + <c>{error,restarting}</c>, respectively. If the child specification identified by <c><anno>Id</anno></c> does not exist, the function returns <c>{error,not_found}</c>.</p> </desc> @@ -410,10 +467,10 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} <p>Tells the supervisor <c><anno>SupRef</anno></c> to restart a child process corresponding to the child specification identified by <c><anno>Id</anno></c>. The child - specification must exist and the corresponding child process + specification must exist, and the corresponding child process must not be running.</p> <p>Note that for temporary children, the child specification - is automatically deleted when the child terminates, and thus + is automatically deleted when the child terminates; thus it is not possible to restart such children.</p> <p>See <seealso marker="#SupRef"><c>start_child/2</c></seealso> for a description of <c>SupRef</c>.</p> @@ -429,7 +486,7 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} is added to the supervisor and the function returns the same value.</p> <p>If the child process start function returns <c>ignore</c>, - the pid remains set to <c>undefined</c> and the function + the pid remains set to <c>undefined</c>, and the function returns <c>{ok,undefined}</c>.</p> <p>If the child process start function returns an error tuple or an erroneous value, or if it fails, the function returns @@ -462,7 +519,7 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} <item> <p><c><anno>Child</anno></c> - the pid of the corresponding child process, the atom <c>restarting</c> if the process is about to be - restarted or <c>undefined</c> if there is no such process.</p> + restarted, or <c>undefined</c> if there is no such process.</p> </item> <item> <p><c><anno>Type</anno></c> - as defined in the child specification.</p> @@ -475,8 +532,8 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} </func> <func> <name name="count_children" arity="1"/> - <fsummary>Return counts for the number of childspecs, active children, - supervisors and workers.</fsummary> + <fsummary>Return counts for the number of child specifications, + active children, supervisors, and workers.</fsummary> <desc> <p>Returns a property list (see <c>proplists</c>) containing the counts for each of the following elements of the supervisor's @@ -487,7 +544,10 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} </item> <item> <p><c>active</c> - the count of all actively running child processes - managed by this supervisor.</p> + managed by this supervisor. In the case of <c>simple_one_for_one</c> + supervisors, no check is carried out to ensure that each child process + is still alive, though the result provided here is likely to be very + accurate unless the supervisor is heavily overloaded.</p> </item> <item> <p><c>supervisors</c> - the count of all children marked as @@ -500,6 +560,8 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} process is still alive.</p> </item> </list> + <p>See <seealso marker="#SupRef"><c>start_child/2</c></seealso> + for a description of <c><anno>SupRef</anno></c>.</p> </desc> </func> <func> @@ -511,11 +573,23 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} correct, or <c>{error,<anno>Error</anno>}</c> otherwise.</p> </desc> </func> + <func> + <name name="get_childspec" arity="2"/> + <fsummary>Return the child specification map for the given + child.</fsummary> + <desc> + <p>Returns the child specification map for the child identified + by <c>Id</c> under supervisor <c>SupRef</c>. The returned + map contains all keys, both mandatory and optional.</p> + <p>See <seealso marker="#SupRef"><c>start_child/2</c></seealso> + for a description of <c><anno>SupRef</anno></c>.</p> + </desc> + </func> </funcs> <section> <title>CALLBACK FUNCTIONS</title> - <p>The following functions should be exported from a + <p>The following functions must be exported from a <c>supervisor</c> callback module.</p> </section> <funcs> @@ -524,33 +598,37 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} <fsummary>Return a supervisor specification.</fsummary> <type> <v>Args = term()</v> - <v>Result = {ok,{{RestartStrategy,MaxR,MaxT},[ChildSpec]}} | ignore</v> - <v> RestartStrategy = <seealso marker="#type-strategy">strategy()</seealso></v> - <v> MaxR = integer()>=0</v> - <v> MaxT = integer()>0</v> + <v>Result = {ok,{SupFlags,[ChildSpec]}} | ignore</v> + <v> SupFlags = <seealso marker="#type-sup_flags">sup_flags()</seealso></v> <v> ChildSpec = <seealso marker="#type-child_spec">child_spec()</seealso></v> </type> <desc> <p>Whenever a supervisor is started using <c>supervisor:start_link/2,3</c>, this function is called by the new process to find out about restart strategy, maximum - restart frequency and child specifications.</p> + restart intensity, and child specifications.</p> <p><c>Args</c> is the <c>Args</c> argument provided to the start function.</p> - <p><c>RestartStrategy</c> is the restart strategy and - <c>MaxR</c> and <c>MaxT</c> defines the maximum restart - frequency of the supervisor. <c>[ChildSpec]</c> is a list of - valid child specifications defining which child processes - the supervisor should start and monitor. See the discussion - about Supervision Principles above.</p> + <p><c>SupFlags</c> is the supervisor flags defining the + restart strategy and max restart intensity for the + supervisor. <c>[ChildSpec]</c> is a list of valid child + specifications defining which child processes the supervisor + shall start and monitor. See the discussion about + Supervision Principles above.</p> <p>Note that when the restart strategy is <c>simple_one_for_one</c>, the list of child specifications must be a list with one child specification only. - (The <c>Id</c> is ignored). No child process is then started + (The child specification identifier is ignored.) No child process is then started during the initialization phase, but all children are assumed to be started dynamically using <c>supervisor:start_child/2</c>.</p> <p>The function may also return <c>ignore</c>.</p> + <p>Note that this function might also be called as a part of a + code upgrade procedure. For this reason, the function should + not have any side effects. See + <seealso marker="doc/design_principles:appup_cookbook#sup">Design + Principles</seealso> for more information about code upgrade + of supervisors.</p> </desc> </func> </funcs> @@ -559,6 +637,7 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules} <title>SEE ALSO</title> <p><seealso marker="gen_event">gen_event(3)</seealso>, <seealso marker="gen_fsm">gen_fsm(3)</seealso>, + <seealso marker="gen_statem">gen_statem(3)</seealso>, <seealso marker="gen_server">gen_server(3)</seealso>, <seealso marker="sys">sys(3)</seealso></p> </section> diff --git a/lib/stdlib/doc/src/supervisor_bridge.xml b/lib/stdlib/doc/src/supervisor_bridge.xml index d16b258b6c..e40c8bbd6f 100644 --- a/lib/stdlib/doc/src/supervisor_bridge.xml +++ b/lib/stdlib/doc/src/supervisor_bridge.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>1996</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> diff --git a/lib/stdlib/doc/src/sys.xml b/lib/stdlib/doc/src/sys.xml index 19605f325b..2255395f46 100644 --- a/lib/stdlib/doc/src/sys.xml +++ b/lib/stdlib/doc/src/sys.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2014</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -216,14 +217,18 @@ processes. For example, a <c>gen_server</c> process returns the callback module's state, a <c>gen_fsm</c> process returns information such as its current state name and state data, - and a <c>gen_event</c> process returns information about each of its + a <c>gen_statem</c> process returns information about + its current state and data, and a <c>gen_event</c> process + returns information about each of its registered handlers. Callback modules for <c>gen_server</c>, - <c>gen_fsm</c>, and <c>gen_event</c> can also customise the value + <c>gen_fsm</c>, <c>gen_statem</c> and <c>gen_event</c> + can also customise the value of <c><anno>Misc</anno></c> by exporting a <c>format_status/2</c> function that contributes module-specific information; - see <seealso marker="gen_server#Module:format_status/2">gen_server:format_status/2</seealso>, - <seealso marker="gen_fsm#Module:format_status/2">gen_fsm:format_status/2</seealso>, and - <seealso marker="gen_event#Module:format_status/2">gen_event:format_status/2</seealso> + see <seealso marker="gen_server#Module:format_status/2">gen_server format_status/2</seealso>, + <seealso marker="gen_fsm#Module:format_status/2">gen_fsm format_status/2</seealso>, + <seealso marker="gen_statem#Module:format_status/2">gen_statem format_status/2</seealso>, and + <seealso marker="gen_event#Module:format_status/2">gen_event format_status/2</seealso> for more details.</p> </desc> </func> @@ -237,13 +242,15 @@ <p>These functions are intended only to help with debugging. They are provided for convenience, allowing developers to avoid having to create their own state extraction functions and also avoid having to interactively extract state from the return values of - <c><seealso marker="#get_status-1">get_status/1</seealso></c> or - <c><seealso marker="#get_status-2">get_status/2</seealso></c> while debugging.</p> + <seealso marker="#get_status-1"><c>get_status/1</c></seealso> or + <seealso marker="#get_status-2"><c>get_status/2</c></seealso> while debugging.</p> </note> <p>The value of <c><anno>State</anno></c> varies for different types of processes. For a <c>gen_server</c> process, the returned <c><anno>State</anno></c> is simply the callback module's state. For a <c>gen_fsm</c> process, <c><anno>State</anno></c> is the tuple <c>{CurrentStateName, CurrentStateData}</c>. + For a <c>gen_statem</c> process <c><anno>State</anno></c> is + the tuple <c>{CurrentState,CurrentData}.</c> For a <c>gen_event</c> process, <c><anno>State</anno></c> a list of tuples, where each tuple corresponds to an event handler registered in the process and contains <c>{Module, Id, HandlerState}</c>, where <c>Module</c> is the event handler's module name, @@ -262,8 +269,9 @@ details of the exception.</p> <p>The <c>system_get_state/1</c> function is primarily useful for user-defined behaviours and modules that implement OTP <seealso marker="#special_process">special - processes</seealso>. The <c>gen_server</c>, <c>gen_fsm</c>, and <c>gen_event</c> OTP - behaviour modules export this function, and so callback modules for those behaviours + processes</seealso>. The <c>gen_server</c>, <c>gen_fsm</c>, + <c>gen_statem</c> and <c>gen_event</c> OTP + behaviour modules export this function, so callback modules for those behaviours need not supply their own.</p> <p>To obtain more information about a process, including its state, see <seealso marker="#get_status-1">get_status/1</seealso> and @@ -289,6 +297,8 @@ <c>gen_fsm</c> process, <c><anno>State</anno></c> is the tuple <c>{CurrentStateName, CurrentStateData}</c>, and <c><anno>NewState</anno></c> is a similar tuple that may contain a new state name, new state data, or both. + The same applies for a <c>gen_statem</c> process but + it names the tuple fields <c>{CurrentState,CurrentData}</c>. For a <c>gen_event</c> process, <c><anno>State</anno></c> is the tuple <c>{Module, Id, HandlerState}</c> where <c>Module</c> is the event handler's module name, <c>Id</c> is the handler's ID (which is the value <c>false</c> if it was registered without @@ -303,7 +313,8 @@ state, then regardless of process type, it may simply return its <c><anno>State</anno></c> argument.</p> <p>If a <c><anno>StateFun</anno></c> function crashes or throws an exception, then - for <c>gen_server</c> and <c>gen_fsm</c> processes, the original state of the process is + for <c>gen_server</c>, <c>gen_fsm</c> or <c>gen_statem</c> processes, + the original state of the process is unchanged. For <c>gen_event</c> processes, a crashing or failing <c><anno>StateFun</anno></c> function means that only the state of the particular event handler it was working on when it failed or crashed is unchanged; it can still succeed in changing the states of other event @@ -328,7 +339,8 @@ <c>{callback_failed, StateFun, {Class, Reason}}</c>.</p> <p>The <c>system_replace_state/2</c> function is primarily useful for user-defined behaviours and modules that implement OTP <seealso marker="#special_process">special processes</seealso>. The - <c>gen_server</c>, <c>gen_fsm</c>, and <c>gen_event</c> OTP behaviour modules export this function, + <c>gen_server</c>, <c>gen_fsm</c>, <c>gen_statem</c> and + <c>gen_event</c> OTP behaviour modules export this function, and so callback modules for those behaviours need not supply their own.</p> </desc> </func> @@ -359,6 +371,17 @@ installed.</p> </desc> </func> + <func> + <name name="terminate" arity="2"/> + <name name="terminate" arity="3"/> + <fsummary>Terminate the process</fsummary> + <desc> + <p>This function orders the process to terminate with the + given <c><anno>Reason</anno></c>. The termination is done + asynchronously, so there is no guarantee that the process is + actually terminated when the function returns.</p> + </desc> + </func> </funcs> <section> diff --git a/lib/stdlib/doc/src/timer.xml b/lib/stdlib/doc/src/timer.xml index eca9a72d36..4f259d57a8 100644 --- a/lib/stdlib/doc/src/timer.xml +++ b/lib/stdlib/doc/src/timer.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>1996</year><year>2013</year> + <year>1996</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -84,7 +85,6 @@ <name name="send_after" arity="3"/> <fsummary>Send <c>Message</c>to <c>Pid</c>after a specified <c>Time</c>.</fsummary> <desc> - <p> <taglist> <tag><c>send_after/3</c></tag> <item> @@ -98,7 +98,6 @@ <p>Same as <c>send_after(<anno>Time</anno>, self(), <anno>Message</anno>)</c>.</p> </item> </taglist> - </p> </desc> </func> <func> @@ -108,7 +107,6 @@ <name name="exit_after" arity="3"/> <fsummary>Send an exit signal with <c>Reason</c>after a specified <c>Time</c>.</fsummary> <desc> - <p> <taglist> <tag><c>exit_after/3</c></tag> <item> @@ -129,7 +127,6 @@ <p>Same as <c>exit_after(<anno>Time</anno>, self(), kill)</c>. </p> </item> </taglist> - </p> </desc> </func> <func> @@ -146,7 +143,6 @@ <name name="send_interval" arity="3"/> <fsummary>Send <c>Message</c>repeatedly at intervals of <c>Time</c>.</fsummary> <desc> - <p> <taglist> <tag><c>send_interval/3</c></tag> <item> @@ -160,7 +156,6 @@ <p>Same as <c>send_interval(<anno>Time</anno>, self(), <anno>Message</anno>)</c>.</p> </item> </taglist> - </p> </desc> </func> <func> @@ -191,7 +186,6 @@ Function, Arguments)</c> or <c>apply(Fun, Arguments)</c></fsummary> <type_desc variable="Time">In microseconds</type_desc> <desc> - <p> <taglist> <tag><c>tc/3</c></tag> <item> @@ -212,17 +206,18 @@ </item> </taglist> - </p> </desc> </func> <func> <name name="now_diff" arity="2"/> - <fsummary>Calculate time difference between <c>now/0</c>timestamps</fsummary> + <fsummary>Calculate time difference between timestamps</fsummary> <type_desc variable="Tdiff">In microseconds</type_desc> <desc> <p>Calculates the time difference <c><anno>Tdiff</anno> = <anno>T2</anno> - <anno>T1</anno></c> in - <em>microseconds</em>, where <c><anno>T1</anno></c> and <c><anno>T2</anno></c> probably - are timestamp tuples returned from <c>erlang:now/0</c>.</p> + <em>microseconds</em>, where <c><anno>T1</anno></c> and <c><anno>T2</anno></c> + are timestamp tuples on the same format as returned from + <seealso marker="erts:erlang#timestamp/0"><c>erlang:timestamp/0</c></seealso>, + or <seealso marker="kernel:os#timestamp/0"><c>os:timestamp/0</c></seealso>.</p> </desc> </func> <func> @@ -234,7 +229,7 @@ </func> <func> <name name="minutes" arity="1"/> - <fsummary>Converts <c>Minutes</c>to <c>Milliseconds</c>.</fsummary> + <fsummary>Converts <c>Minutes</c> to <c>Milliseconds</c>.</fsummary> <desc> <p>Return the number of milliseconds in <c><anno>Minutes</anno></c>.</p> </desc> diff --git a/lib/stdlib/doc/src/unicode.xml b/lib/stdlib/doc/src/unicode.xml index 6f8a289432..edc6830cb5 100644 --- a/lib/stdlib/doc/src/unicode.xml +++ b/lib/stdlib/doc/src/unicode.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>1996</year> - <year>2013</year> + <year>2016</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> @@ -132,7 +133,7 @@ <c>latin1</c>, or have characters encoded as one of the UTF-encodings, which is given as the <c><anno>InEncoding</anno></c> parameter. Only when the <c><anno>InEncoding</anno></c> is one of the UTF - encodings, integers in the list are allowed to be grater than + encodings, integers in the list are allowed to be greater than 255.</p> <p>If <c><anno>InEncoding</anno></c> is <c>latin1</c>, the <c><anno>Data</anno></c> parameter diff --git a/lib/stdlib/doc/src/unicode_usage.xml b/lib/stdlib/doc/src/unicode_usage.xml index 29b8940c62..b4c9385e33 100644 --- a/lib/stdlib/doc/src/unicode_usage.xml +++ b/lib/stdlib/doc/src/unicode_usage.xml @@ -5,20 +5,21 @@ <header> <copyright> <year>1999</year> - <year>2014</year> + <year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -850,8 +851,9 @@ Eshell V5.10.1 (abort with ^G) expected to be in Unicode.</p> <p>If Unicode file names are enabled, the calls to <seealso marker="kernel:os#getenv/0"><c>os:getenv/0</c></seealso>, - <seealso marker="kernel:os#getenv/1"><c>os:getenv/1</c></seealso> and - <seealso marker="kernel:os#putenv/2"><c>os:putenv/2</c></seealso> + <seealso marker="kernel:os#getenv/1"><c>os:getenv/1</c></seealso>, + <seealso marker="kernel:os#putenv/2"><c>os:putenv/2</c></seealso> and + <seealso marker="kernel:os#unsetenv/1"><c>os:unsetenv/1</c></seealso> will handle Unicode strings. On Unix-like platforms, the built-in functions will translate environment variables in UTF-8 to/from Unicode strings, possibly with code points > 255. On Windows the diff --git a/lib/stdlib/doc/src/win32reg.xml b/lib/stdlib/doc/src/win32reg.xml index 8835f931b2..52a8942c59 100644 --- a/lib/stdlib/doc/src/win32reg.xml +++ b/lib/stdlib/doc/src/win32reg.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2000</year><year>2013</year> + <year>2000</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> diff --git a/lib/stdlib/doc/src/zip.xml b/lib/stdlib/doc/src/zip.xml index 48b376743d..09a6587583 100644 --- a/lib/stdlib/doc/src/zip.xml +++ b/lib/stdlib/doc/src/zip.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2006</year><year>2013</year> + <year>2006</year><year>2016</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -125,7 +126,7 @@ </datatype> <datatype> <name name="filename"/> - <p>The name of a zip file.</p> + <desc><p>The name of a zip file.</p></desc> </datatype> <datatype><name name="extension"/></datatype> <datatype><name name="extension_spec"/></datatype> @@ -135,6 +136,12 @@ <p>These options are described in <seealso marker="#zip_options">create/3</seealso>.</p> </desc> </datatype> + <datatype> + <name name="handle"/> + <desc> + <p>As returned by <seealso marker="#zip_open/2">zip_open/2</seealso>.</p> + </desc> + </datatype> </datatypes> <funcs> <func> @@ -430,6 +437,8 @@ means that subsequently reading files from the archive will be faster than unzipping files one at a time with <c>unzip</c>.</p> <p>The archive must be closed with <c>zip_close/1</c>.</p> + <p>The <c><anno>ZipHandle</anno></c> will be closed if the + process which originally opened the archive dies.</p> </desc> </func> <func> |