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Diffstat (limited to 'lib/kernel/doc/src/notes.xml')
| -rw-r--r-- | lib/kernel/doc/src/notes.xml | 361 |
1 files changed, 360 insertions, 1 deletions
diff --git a/lib/kernel/doc/src/notes.xml b/lib/kernel/doc/src/notes.xml index 021ecfa40d..4d31eeea3d 100644 --- a/lib/kernel/doc/src/notes.xml +++ b/lib/kernel/doc/src/notes.xml @@ -31,6 +31,366 @@ </header> <p>This document describes the changes made to the Kernel application.</p> +<section><title>Kernel 6.4.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p><c>user</c>/<c>user_drv</c> could respond to io + requests before they had been processed, which could + cause data to be dropped if the emulator was halted soon + after a call to <c>io:format/2</c>, such as in an + escript.</p> + <p> + Own Id: OTP-15805</p> + </item> + </list> + </section> + +</section> + +<section><title>Kernel 6.4</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix so that when multiple <c>-sname</c> or <c>-name</c> + are given to <c>erl</c> the first one is chosen. Before + this fix distribution was not started at all when + multiple name options were given.</p> + <p> + Own Id: OTP-15786 Aux Id: ERL-918 </p> + </item> + <item> + <p> + Fix <c>inet_res</c> configuration pointing to + non-existing files to work again. This was broken in + KERNEL-6.3 (OTP-21.3).</p> + <p> + Own Id: OTP-15806</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + A simple socket API is provided through the socket + module. This is a low level API that does *not* replace + gen_[tcp|udp|sctp]. It is intended to *eventually* + replace the inet driver, but not the high level + gen-modules (gen_tcp, gen_udp and gen_sctp). It also + provides a basic API that facilitates the implementation + of other protocols, that is TCP, UDP and SCTP. </p> + <p> + Known issues are; No support for the Windows OS + (currently).</p> + <p> + Own Id: OTP-14831</p> + </item> + <item> + <p> + Improved the documentation for the linger option.</p> + <p> + Own Id: OTP-15491 Aux Id: PR-2019 </p> + </item> + <item> + <p> Global no longer tries more than once when connecting + to other nodes. </p> + <p> + Own Id: OTP-15607 Aux Id: ERIERL-280 </p> + </item> + <item> + <p> + The dist messages EXIT, EXIT2 and MONITOR_DOWN have been + updated with new versions that send the reason term as + part of the payload of the message instead of as part of + the control message.</p> + <p> + The old versions are still present and can be used when + communicating with nodes that don't support the new + versions.</p> + <p> + Own Id: OTP-15611</p> + </item> + <item> + <p> + Kernel configuration parameter <c>start_distribution = + boolean()</c> is added. If set to <c>false</c>, the + system is started with all distribution functionality + disabled. Defaults to <c>true</c>.</p> + <p> + Own Id: OTP-15668 Aux Id: PR-2088 </p> + </item> + <item> + <p> + In OTP-21.3, a warning was introduced for duplicated + applications/keys in configuration. This warning would be + displayed both when the configuration was given as a file + on system start, and during runtime via + <c>application:set_env/1,2</c>.</p> + <p> + The warning is now changed to a <c>badarg</c> exception + in <c>application:set_env/1,2</c>. If the faulty + configuration is given in a configuration file on system + start, the startup will fail.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-15692 Aux Id: PR-2170 </p> + </item> + </list> + </section> + +</section> + +<section><title>Kernel 6.3.1.2</title> + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + The possibility to send ancillary data, in particular the + TOS field, has been added to <c>gen_udp:send/4,5</c>.</p> + <p> + Own Id: OTP-15747 Aux Id: ERIERL-294 </p> + </item> + </list> + </section> + +</section> + +<section><title>Kernel 6.3.1.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix type spec for <c>seq_trace:set_token/2</c>.</p> + <p> + Own Id: OTP-15858 Aux Id: ERL-700 </p> + </item> + </list> + </section> + +</section> + +<section><title>Kernel 6.3.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p>Fixed a performance regression when reading files + opened with the <c>compressed</c> flag.</p> + <p> + Own Id: OTP-15706 Aux Id: ERIERL-336 </p> + </item> + </list> + </section> + +</section> + +<section><title>Kernel 6.3</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + If for example the <c>/etc/hosts</c> did not come into + existence until after the kernel application had started, + its content was never read. This bug has now been + corrected.</p> + <p> + Own Id: OTP-14702 Aux Id: PR-2066 </p> + </item> + <item> + <p> + Fix bug where doing <c>seq_trace:reset_trace()</c> while + another process was doing a garbage collection could + cause the run-time system to segfault.</p> + <p> + Own Id: OTP-15490</p> + </item> + <item> + <p> + Fix <c>erl_epmd:port_please</c> spec to include + <c>atom()</c> and <c>string()</c>.</p> + <p> + Own Id: OTP-15557 Aux Id: PR-2117 </p> + </item> + <item> + <p> + The Logger handler logger_std_h now keeps track of the + inode of its log file in order to re-open the file if the + inode changes. This may happen, for instance, if the log + file is opened and saved by an editor.</p> + <p> + Own Id: OTP-15578 Aux Id: ERL-850 </p> + </item> + <item> + <p> + When user specific file modes are given to the logger + handler <c>logger_std_h</c>, they were earlier accepted + without any control. This is now changes, so Logger will + adjust the file modes as follows:</p> + <p> + - If <c>raw</c> is not found in the list, it is + added.<br/> - If none of <c>write</c>, <c>append</c> or + <c>exclusive</c> are found in the list, <c>append</c> is + added.<br/> - If none of <c>delayed_write</c> or + <c>{delayed_write,Size,Delay}</c> are found in the list, + <c>delayed_write</c> is added.</p> + <p> + Own Id: OTP-15602</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + The standard logger handler, <c>logger_std_h</c>, now has + a new internal feature for log rotation. The rotation + scheme is as follows:</p> + <p> + The log file to which the handler currently writes always + has the same name, i.e. the name which is configured for + the handler. The archived files have the same name, but + with extension ".N", where N is an integer. The newest + archive has extension ".0", and the oldest archive has + the highest number. </p> + <p> + The size at which the log file is rotated, and the number + of archive files that are kept, is specified with the + handler specific configuration parameters + <c>max_no_bytes</c> and <c>max_no_files</c> respectively. </p> + <p> + Archives can be compressed, in which case they get a + ".gz" file extension after the integer. Compression is + specified with the handler specific configuration + parameter <c>compress_on_rotate</c>.</p> + <p> + Own Id: OTP-15479</p> + </item> + <item> + <p> + The new functions <c>logger:i/0</c> and <c>logger:i/1</c> + are added. These provide the same information as + <c>logger:get_config/0</c> and other + <c>logger:get_*_config</c> functions, but the information + is more logically sorted and more readable.</p> + <p> + Own Id: OTP-15600</p> + </item> + <item> + <p> + Logger is now protected against overload due to massive + amounts of log events from the emulator or from remote + nodes.</p> + <p> + Own Id: OTP-15601</p> + </item> + <item> + <p> + Logger now uses os:system_time/1 instead of + erlang:system_time/1 to generate log event timestamps.</p> + <p> + Own Id: OTP-15625</p> + </item> + <item> + <p> + Add functions <c>application:set_env/1,2</c> and + <c>application:set_env/2</c>. These take a list of + application configuration parameters, and the behaviour + is equivalent to calling <c>application:set_env/4</c> + individually for each application/key combination, except + it is more efficient.</p> + <p> + <c>set_env/1,2</c> warns about duplicated applications or + keys. The warning is also emitted during boot, if + applications or keys are duplicated within one + configuration file, e.g. sys.config.</p> + <p> + Own Id: OTP-15642 Aux Id: PR-2164 </p> + </item> + <item> + <p> + Handler specific configuration parameters for the + standard handler <c>logger_std_h</c> are changed to be + more intuitive and more similar to the disk_log handler.</p> + <p> + Earlier there was only one parameter, <c>type</c>, which + could have the values <c>standard_io</c>, + <c>standard_error</c>, <c>{file,FileName}</c> or + <c>{file,FileName,Modes}</c>.</p> + <p> + This is now changed, so the following parameters are + allowed:</p> + <p> + <c>type = standard_io | standard_error | file</c><br/> + <c>file = file:filename()</c><br/> <c>modes = + [file:mode()]</c></p> + <p> + All parameters are optional. <c>type</c> defaults to + <c>standard_io</c>, unless a file name is given, in which + case it defaults to <c>file</c>. If <c>type</c> is set to + <c>file</c>, the file name defaults to the same as the + handler id.</p> + <p> + The potential incompatibility is that + <c>logger:get_config/0</c> and + <c>logger:get_handler_config/1</c> now returns the new + parameters, even if the configuration was set with the + old variant, e.g. <c>#{type=>{file,FileName}}</c>.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-15662</p> + </item> + <item> + <p> + The new configuration parameter <c>file_check</c> is + added to the Logger handler <c>logger_std_h</c>. This + parameter specifies how long (in milliseconds) the + handler may wait before checking if the log file still + exists and the inode is the same as when it was opened.</p> + <p> + The default value is 0, which means that this check is + done prior to each write operation. Setting a higher + number may improve performance, but adds the risk of + loosing log events.</p> + <p> + Own Id: OTP-15663</p> + </item> + </list> + </section> + +</section> + +<section><title>Kernel 6.2.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Setting the <c>recbuf</c> size of an inet socket the + <c>buffer</c> is also automatically increased. Fix a bug + where the auto adjustment of inet buffer size would be + triggered even if an explicit inet buffer size had + already been set.</p> + <p> + Own Id: OTP-15651 Aux Id: ERIERL-304 </p> + </item> + </list> + </section> + +</section> + <section><title>Kernel 6.2</title> <section><title>Fixed Bugs and Malfunctions</title> @@ -5716,4 +6076,3 @@ </section> </section> </chapter> - |