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2010-07-07Merge branch 'cf/timer_tc' into devRaimo Niskanen
* cf/timer_tc: Add timer:tc/2 to measure the elapsed time of anonymous functions Conflicts: lib/stdlib/doc/src/timer.xml
2010-06-09Correct warnings and errors for auto-imported bif clashesPatrik Nyblom
warn_unused_import works correctly (does not give warnings when overridden). Local call in guard gives its own error pointing out the local/imported function. Use of the phrase "overridden auto-imported bif" instead of "redefined auto-imported bif" in textual error messages.
2010-06-03OTP-8665 epp bugHans Bolinder
The Erlang code preprocessor (epp) did not correctly handle premature end-of-input when defining macros. This bug, introduced in STDLIB 1.16, has been fixed.
2010-06-02Improve coverage of erl_int in testcasesPatrik Nyblom
2010-06-02Change warning to error for nowarn_bif_clash compiler directivePatrik Nyblom
2010-06-02Return nowarn_bif_clash functionality but with warningPatrik Nyblom
Wrote and changed some tests in stdlib:erl_lint_SUITE nowarn_bif_clash is obsoleted but will remove warnings and errors about bif clashes. The recommended way is to use no_auto_import directives instead. Hopefully erlang.erl is the only user in the world of nowarn_bif_clash.
2010-06-02OTP-8664 Erlang parser augmented with operators for integer typesHans Bolinder
Expressions evaluating to integers can now be used in types and function specifications where hitherto only integers were allowed ("Erlang_Integer").
2010-06-02Evaluate element/2 at compile-time using type informationBjörn Gustavsson
The erl_expand_records compiler pass translates the following code: h(X) when X#r1.a =:= 1 -> ok. to (essentially): h({r1,V1,V2}=X) when element(2, X) =:= 1 -> ok. Since the guard can only be executed when the pattern matching has succeeded, we know that the second element in the tuple X must have been bound to V2. Thus we can eliminate the call to element/2 like this: h({r1,V1,V2}=X) when V1 =:= 1 -> ok.
2010-05-31OTP-8657 New Erlang scanner tokens: '..' and '...'Hans Bolinder
The Erlang scanner has been augmented with two new tokens: .. and ....
2010-05-27handle {global, term()} names in format_status/2Steve Vinoski
The gen_fsm, gen_server, and wx_object format_status implementations fail to handle global names of the form {global, term()} where term() is something other than an atom, pid, or list. Change these format_status implementations to treat names that are atoms, pids, or lists as before, but for all other terms, set the header property of the function return value to a tuple whose first element is a string describing the return value and whose second element is the name term. Add unit tests for gen_server and gen_fsm to verify sys:get_status calls work successfully for globally registered instances.
2010-05-21Merge branch 'sv/format_status_error_info' into devErlang/OTP
* sv/format_status_error_info: Add support for the format_status callback to gen_event Extend format_status for gen_server/gen_fsm termination error logging OTP-8630 sv/format_status_error_info When a gen_server, gen_fsm process, or gen_event terminates abnormally, sometimes the text representation of the process state can occupy many lines of the error log, depending on the definition of the state term. A mechanism to trim out parts of the state from the log has been added (using a format_status/2 callback). See the documentation.
2010-05-17Add documentation for binary modulePatrik Nyblom
Correct behaviour of copy/2 witn 0 copies.
2010-05-17Add more tests and make some go easier on small systemsPatrik Nyblom
Even more tests added to cover more error cases, some tests made easier on systems with small memories and timeouts made longer due to timetraps on solaris daily builds.
2010-05-17Correct Boyer More and trapping for longest_common_suffixPatrik Nyblom
Add testcases and clean up to get better code coverage.
2010-05-17Add longer timetrap to testcases and add binary to app filePatrik Nyblom
2010-05-17Add guard BIFs binary_part/2,3Patrik Nyblom
Add the gc_bif's to the VM. Add infrastructure for gc_bif's (guard bifs that can gc) with two and. three arguments in VM (loader and VM). Add compiler support for gc_bif with three arguments. Add compiler (and interpreter) support for new guard BIFs. Add testcases for new guard BIFs in compiler and emulator.
2010-05-17Add binary:{encode,decode}_unsigned({1,2}Patrik Nyblom
Add testcases for encode/decode_unsigned/1,2.
2010-05-17Add referenced_byte_size/1Patrik Nyblom
Add testcases for referenced_byte_size/1. Add failure tests for referenced_byte_size.
2010-05-17Add binary:list_to_bin/1 and binary:copy/1,2Patrik Nyblom
Add testcases for binary:list_to_bin/1 and binary:copy/1,2. Add reference implementation of list_to_bin/1.
2010-05-17Add bin_to_list/{1,2,3}Patrik Nyblom
Add testcases for bin_to_list. Teach binref.erl bin_to_list.
2010-05-17Add binary:longest_common_prefix/longest_common_suffixPatrik Nyblom
Add allcoator parameter to erts_get_aligned_binary_bytes_extra. Add testcases for the functions above. Add reference implementation for the functions above.
2010-05-17Add binary:part to erl_bif_binary.cPatrik Nyblom
Change name of the 'scope' option for binary:match/matches. Add split and replace to binary.erl. Cleanup comments etc in binary.erl and atom.names Add testcases for part, split, replace and scopes.
2010-05-17Count reductions for process even when not trappingPatrik Nyblom
Set loop factors to 10. Teach erts_debug:set_internal_state to limit loop factor for binary. Add random tests for matches and match with multiple searchstrings.
2010-05-17Add random compare testcasePatrik Nyblom
Fix heap-hole when trapping in binary.c Fix boyer more segfaulting when searchstring is longer than haystack
2010-05-17Teach binary.c the semantics to take longest instead of shortest matchPatrik Nyblom
Add testcase embryos and reference implementation. Change name of compile function according to EEP31.
2010-05-12Add support for the format_status callback to gen_eventSteve Vinoski
The gen_server and gen_fsm behaviors support the format_status callback to allow developers to specialize how callback module state appears within the return value of sys:get_status and within logged output resulting from abnormal process termination. This patch adds similar support to gen_event. Event handlers that export a format_status/2 function, which is an optional callback, and are registered with an event manager will now have their format_status callbacks invoked when sys:get_status is called on the event manager. The term returned from format_status for this case replaces the default handler state in the sys:get_status return value. This patch also extends gen_event to call an event handler's format_status function (if it exports one) should the handler terminate abnormally. The term returned from format_status is logged in place of the handler's state. This is intended to allow developers to control how much output is logged in the case of abnormal termination. The documentation is appropriately extended and new unit tests are added to cover the new gen_event format_status functionality.
2010-05-12Extend format_status for gen_server/gen_fsm termination error loggingSteve Vinoski
When a gen_server or gen_fsm process terminates abnormally, sometimes the text representation of the process state can occupy many lines of the error log, depending on the definition of the state term. Developers sometimes would like a way to trim out parts of the state from the log if those parts don't contribute to documenting the circumstances of the error, thereby helping to reduce the amount of logged output. Since the format_status callback can already format and specialize gen_server and gen_fsm state for inclusion in the term returned from sys:get_status, this patch extends format_status in a backward-compatible way to also be able to specialize the state logged for abnormal gen_server and gen_fsm termination, and includes new unit tests to verify the new functionality. This patch also eliminates the previous restriction that the status returned by format_status must be a list. It can now be any term. The documentation is extended to cover the new usage for format_status, and it's been improved to recommend a form for the normal case that allows the returned status to fit well with the rest of the term returned by sys:get_status. The documentation is clear that this form is only recommended, not required.
2010-05-12Merge branch 'bg/opt-receive' into devErlang/OTP
* bg/opt-receive: Test that gen_server:call/2,3 are fast even with a huge message queue erts: Add tests for the receive optimization Update primary bootstrap erts: Implement recv_mark/1 and recv_set/1 for real compiler tests: Cover the error handling code in beam_receive compiler test: Test optimization of receive statements Optimize selective receives in the presence of a large message queue Introduce the new recv_mark/1 and recv_mark/1 instructions Compile tests that communicate with R12 nodes with the r12 option Move p_run/2 to test_lib gen: Inline wait_resp_mon/2 to help the compiler optimize OTP-8623 bg/opt-receive reveive statements that can only read out a newly created reference are now specially optimized so that it will execute in constant time regardless of the number of messages in the receive queue for the process. That optimization will benefit calls to gen_server:call(). (See gen:do_call/4 for an example of a receive statement that will be optimized.)
2010-05-11Test that gen_server:call/2,3 are fast even with a huge message queueBjörn Gustavsson
2010-05-11Compile tests that communicate with R12 nodes with the r12 optionBjörn Gustavsson
R12 nodes cannot load code that use the optimized receive that we are about to implement.
2010-04-20Add testcase for infinite loop problem caused by reset of match_call_countPatrik Nyblom
2010-04-19OTP-8567 The word 'spec' is no longer reserved.Hans Bolinder
The function erl_scan:reserved_word/1 no longer returns true when given the word spec. This bug was introduced in STDLIB-1.15.3 (R12B-3).
2010-04-14re_SUITE: Add pcre_compile_workspace_overflow/1Björn Gustavsson
2010-04-09Add timer:tc/2 to measure the elapsed time of anonymous functionsChristopher Faulet
Works like timer:tc/3 but for anonymous functions.
2010-04-09OTP-8562 Closing right parenthesis in macro definitions is mandatory.Hans Bolinder
When defining macros the closing right parenthesis before the dot is now mandatory.
2010-03-17OTP-8522 Avoid duplicated 'undefined' in record field typesHans Bolinder
The Erlang parser no longer duplicates the singleton type undefined in the type of record fields without initial value.
2010-03-16Add functions to create and extract escriptsHåkan Mattsson
Both reltool and rebar needs to parse escripts. They are currently using an undocumented function called escript:foldl/3. It folds a function over all files in the body of an escript. If the body contains source code the function compiles it and the gives debug compiled beam code to the fold fun. If the body is an archive the fun is applied for all files in the archive. Instead of making the undocumented function public, the new functions escript:create/2 and escript:extract/2 has been introduced. Together with the new zip:foldl/3 function they have the same functionality as escript:foldl/3 in a more flexible and generic way. escript:foldl/3 should be removed as soon as reltool and rebar has been adopted to use the new functions. The simplest way for reltool and rebar to do this is to just copy the code from escript_SUITE:escript_foldl/3, which happens to provide a future compatible implementation of an emulated escript:foldl/3 function. I was quite hesitant when I introduced the compile_source option. It feels that it does not belong there but the alternative felt worse. The rationale for the compile_source option is that it is a bit cumbersome to compile the source code, as the source in most cases is partial. In order to do compile the source you need to know about some internals in escript. Without compile_source I think that these internals should be documented. Further you need to duplicate parts of the code. Without the compile_source option you need to first parse the source to forms, using an undocumented function in epp with an extended format of predefined macros which also is undocumented. Then you need to investigate the forms to see if you need to add an export form for main. When that is done you can run the rest of the compiler passes as usual. It is not so much code (60 lines or so) to write, but I do not want to urge people to write it. I actually wrote the code (see escript_SUITE:escript_foldl/3) before I decided to introduce the compile_source option.
2010-03-16Add function zip:foldl/3 to iterate over zip archivesHåkan Mattsson
This is the public interface of prim_zip:open/3, which has been used in earlier releases by both erl_prim_loader and escript. The new function can be used as a replacement for the undocumented function escript:foldl/3 that is likely to be removed without further notice. The error handling of prim_zip:open/3 (and prim_zip:foldl/3) has been improved in order to better suite a public interface. For example it could happen that a file or a zlib port could be left open in some errors cases. The documentation of the FileSpec parameter to zip:create/3 has been updated to show that file info can be explicitly specified. A FileSpec may contain {Filename, binary(), #file_info{}} elements. The function zip:create/3 was already prepared to partly support this, but now after a few minor fixes it is fully supported.
2010-03-15Update copyright headersBjörn Gustavsson
2010-03-09OTP-8503 stdlib: records with no fields is considered typed by eppHans Bolinder
The empty record (no fields) is now considered typed. It is more consistent than before; the base case is the logical one. A record is typed iff all its fields are typed. A record is tagged 'typed' iff it is typed.
2010-03-02OTP-8473 stdlib: erl_pp bugfix abstract type 'fun'Hans Bolinder
The abstract type 'fun' could not be printed. This bug has been fixed.
2010-03-02OTP-8470 stdlib: epp bugHans Bolinder
The Erlang code preprocessor (epp) sent extra messages on the form {eof,Location} to the client when parsing the file attribute. This bug, introduced in R11B, has been fixed.
2010-02-12Merge branch 'ms/pcre-security' into ccase/r13b04_devErlang/OTP
* ms/pcre-security: Fix CVE-2008-2371 (outer level option with alternatives caused crash). OTP-8438 The re module: A regular expression with an option change at the start of a pattern that had top-level alternatives could cause overwriting and/or a crash. (Thanks to Michael Santos.)
2010-02-12Merge branch 'jn/supervisor_child_count_only' into ccase/r13b04_devErlang/OTP
* jn/supervisor_child_count_only: Add count_children/1 to supervisor.erl to determine the number of OTP-8436 Added supervisor:count_children/1 to count the number of children being managed without the memory impact of which_children/1. (Thanks to Jay Nelson.)
2010-02-11Fix CVE-2008-2371 (outer level option with alternatives caused crash).Michael Santos
The patch is from: http://vcs.pcre.org/viewvc?revision=360&view=revision Test case: re:compile(<<"(?i)[\xc3\xa9\xc3\xbd]|[\xc3\xa9\xc3\xbdA]">>, [unicode]). An option change at the start of a pattern that had top-level alternatives could cause overwriting and/or a crash. This potential security problem was recorded as CVE-2008-2371.
2010-02-10Add count_children/1 to supervisor.erl to determine the number ofJay Nelson
children being managed without the memory impact of which_children/1 The function which_children/1 returns a list of the child processes currently being supervised, but it has the penalty of creating a new list thereby consuming more memory. In low memory situations it is often desirable to know which supervisor may have generated many processes, but the act of discovering the culprit should not cause the node to crash (or worse a different node if the kernel kills one randomly). The new function count_children/1 can give an indication of which supervisor is taxing resources the most without adding to the burden. Rather than creating a new list, it walks the supervisor's internal children structure using an accumulator function so that any used memory can be incrementally collected yet the resulting count can still be obtained. The return result of count_children/1 is a property list of counts containing: - {specs, Total_Num_Child_Specs} - {active, Num_Active_Child_Processes_Of_Supervisor_Or_Worker_Type} - {supervisors, Num_Supervisor_Type_Children_Including_Dead_Processes} - {workers, Num_Worker_Type_Children_Including_Dead_Processes} This patch was made in response to mailing list discussions of the problem diagnosing heavily taxed production systems. I cannot find the original request, but http://www.erlang.org/cgi-bin/ezmlm-cgi/4/35060 is my original post of the patch.
2010-02-10OTP-8418 user.erl (used in oldshell) is updated to handle unicode inPatrik Nyblom
prompt strings (io:get_line/{1,2}). io_lib is also updated to format prompts with the 't' modifier (i.e. ~ts instead of ~s).
2010-02-10Merge branch 'ks/erl_lint' into ccase/r13b04_devErlang/OTP
* ks/erl_lint: erl_lint_SUITE: adjust failing test case Allow recursive types and check for undefined types OTP-8421: ks/erl_lint
2010-02-09erl_lint_SUITE: adjust failing test caseBjörn Gustavsson
Errors are now reported slightly differently, so we'll need to adjust the test case.
2010-02-05OTP-8393 The new function shell:prompt_func/1 and the new applicationHans Bolinder
configuration parameter shell_prompt_func can be used for customizing the Erlang shell prompt.