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Diffstat (limited to 'lib/kernel/doc/src/notes.xml')
| -rw-r--r-- | lib/kernel/doc/src/notes.xml | 182 |
1 files changed, 168 insertions, 14 deletions
diff --git a/lib/kernel/doc/src/notes.xml b/lib/kernel/doc/src/notes.xml index 6f7f18a8e7..268a8404f1 100644 --- a/lib/kernel/doc/src/notes.xml +++ b/lib/kernel/doc/src/notes.xml @@ -8,16 +8,17 @@ <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 +31,160 @@ </header> <p>This document describes the changes made to the Kernel application.</p> +<section><title>Kernel 4.1</title> + + <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>Kernel 4.0</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix error handling in <c>file:read_line/1</c> for Unicode + contents.</p> + <p> + Own Id: OTP-12144</p> + </item> + <item> + <p> + Introduce <c>os:getenv/2</c> which is similar to + <c>os:getenv/1</c> but returns the passed default value + if the required environment variable is undefined.</p> + <p> + Own Id: OTP-12342</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> + Ensure that each segment of an IPv6 address when parsed + from a string has a maximum of 4 hex digits</p> + <p> + Own Id: OTP-12773</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <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> + The internal group to user_drv protocol has been changed + to be synchronous in order to guarantee that output sent + to a process implementing the user_drv protocol is + printed before replying. This protocol is used by the + standard_output device and the ssh application when + acting as a client. </p> + <p> + This change changes the previous unlimited buffer when + printing to standard_io and other devices that end up in + user_drv to 1KB.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-12240</p> + </item> + <item> + <p>The <c>inflateInit/2</c> and <c>deflateInit/6</c> + functions now accepts a WindowBits argument equal to 8 + and -8.</p> + <p> + Own Id: OTP-12564</p> + </item> + <item> + <p> + Map error logger warnings to warning messages by default.</p> + <p> + Own Id: OTP-12755</p> + </item> + <item> + <p> + Map beam error logger warnings to warning messages by + default. Previously these messages were mapped to the + error channel by default.</p> + <p> + Own Id: OTP-12781</p> + </item> + <item> + <p> + gen_tcp:shutdown/2 is now asynchronous</p> + <p> + This solves the following problems with the old + implementation:</p> + <p> + It doesn't block when the TCP peer is idle or slow. This + is the expected behaviour when shutdown() is called: the + caller needs to be able to continue reading from the + socket, not be prevented from doing so.</p> + <p> + It doesn't truncate the output. The current version of + gen_tcp:shutdown/2 will truncate any outbound data in the + driver queue after about 10 seconds if the TCP peer is + idle of slow. Worse yet, it doesn't even inform anyone + that the data has been truncated: 'ok' is returned to the + caller; and a FIN rather than an RST is sent to the TCP + peer.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-12797</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-12843</p> + </item> + </list> + </section> + +</section> + <section><title>Kernel 3.2</title> <section><title>Fixed Bugs and Malfunctions</title> @@ -1063,7 +1218,7 @@ </item> <item> <p> Fix returned error from gen_tcp:accept/1,2 when - running out of ports + running out of ports.</p> <p> The {error, enfile} return value is badly misleading and confusing for this case, since the Posix ENFILE errno @@ -1072,7 +1227,7 @@ {error, system_limit}, which is consistent with e.g. various file(3) functions. inet:format_error/1 has also been updated to support system_limit in the same manner - as file:format_error/1. (Thanks to Per Hedeland)</p></p> + as file:format_error/1. (Thanks to Per Hedeland)</p> <p> Own Id: OTP-9990</p> </item> @@ -1267,7 +1422,6 @@ Own Id: OTP-9764</p> </item> <item> - <p> <list> <item><p>Correct callback spec in application module</p></item> <item><p>Refine warning about callback specs with extra ranges</p></item> <item><p>Cleanup @@ -1278,7 +1432,7 @@ analysis</p></item> <item><p>Fix crash in Dialyzer</p></item> <item><p>Variable substitution was not generalizing any unknown variables.</p></item> - </list></p> + </list> <p> Own Id: OTP-9776</p> </item> |