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2018-06-05Merge branch 'dgud/stdlib/string-case-bin-bug'Dan Gudmundsson
* dgud/stdlib/string-case-bin-bug: Fix *case bugs for binaries
2018-06-04erts: Reduce test log noise from ets_SUITESverker Eriksson
2018-06-04Fix *case bugs for binariesDan Gudmundsson
Bad optimizing code introduced in 5c51e87bee9d
2018-05-18Merge branch 'sverker/ets-delete_all_objects-trap/OTP-15078'Sverker Eriksson
* sverker/ets-delete_all_objects-trap/OTP-15078: erts: Rename untrapping db_free_*empty*_table erts: Make ets:delete_all_objects yield on fixed table erts: Optimize ets delete all in fixed table erts: Refactor ets select iteration code erts: Cleanup ets code erts: Optimize ets hash object deallocactions erts: Refactor pseudo deleted ets objects erts: Make atomic ets:delete_all_objects yield erts: Fix reduction bump for ets:delete/1
2018-05-17Merge pull request #1810 from tomas-abrahamsson/bjorn/preprocessor-extensionsBjörn Gustavsson
Add ?OTP_RELEASE, -if and -elif to the preprocessor OTP-15087
2018-05-17Merge pull request #1817 from dgud/dgud/stdlib/string-opt-caseDan Gudmundsson
OTP-14988
2018-05-14Optimize string lowercase, uppercase and casefold for ASCII charactersDan Gudmundsson
2018-05-09epp: Implement the -if and -elif preprocessor directivesBjörn Gustavsson
Libraries or applications that support more than one major release of OTP may need to use conditional compilation of Erlang source code. Here are few examples where it would be necessary or desirable: * To support a new data type or language feature only available in the latest major release (real-world examples: maps and the stacktrace syntax). * To avoid warnings for deprecated functions. * To avoid dialyzer warnings. Previously, to do conditional compilation, one would have to use a parse transform or some external tool such as 'autoconf'. To simplify conditional compilation, introduce the -if and -elif preprocessor directives, to allow code like this to be written: -if(?OTP_RELEASE =:= 21). %% Code that will only work in OTP 21. -else. %% Fallback code. -endif. What kind of expressions should be allowed after an -if? We certainly don't want to allow anything with a side effect, such as a '!' or a 'receive'. We also don't want it to be possible to call erlang:system_info/1, as that could make the code depedent on features of the run-time system that could change very easily (such as the number of schedulers). Requiring the expression to be a guard expression makes most sense. It is to explain in the documentation and easy for users to understand. For simplicity of implementation, only a single guard expression will be supported; that is, the ',' and ';' syntax for guards is not supported. To allow some useful conditions to be written, there is a special built-in function: defined(Symbol) tests whether the preprocessor symbol is defined, just like -ifdef. The reason for having this defined/1 is that the defined test can be combined with other tests, for example: 'defined(SOME_NAME) andalso ?OTP_RELEASE > 21'.
2018-05-08erts: Make atomic ets:delete_all_objects yieldSverker Eriksson
by using a cooperative strategy that will make any process accessing the table execute delelete_all_objects_continue until the table is empty. This is not an optimal solution as concurrent threads will still block on the table lock, but at least thread progress is made.
2018-05-06epp: Add the pre-defined macro OTP_RELEASEBjörn Gustavsson
Add a new pre-defined macro called OTP_RELEASE that will expand to an integer being the OTP version. Thus, in OTP 19 the value will be the integer 19. The OTP_RELEASE macro is particularly useful in order to have different source code depending on new language features or new features in the type specification syntax. Those features are only introduced in major versions of OTP. To be truly useful, the -if preprocessor directive need to be implemented. That is the purpose of the next commit. Code that will need to work in both OTP 18 and OTP 19 can be structured in the following way: -ifdef(OTP_RELEASE). %% Code that only works in OTP 19 and later. -else. %% Code that will work in OTP 18. -endif.
2018-05-04Move error formatting to erl_error.erl and delete lib.erlRichard Carlsson
2018-05-04Move extended parse functions in lib.erl to erl_eval.erlRichard Carlsson
2018-05-04Add ct:get_progname/0Richard Carlsson
This replaces all uses of lib:progname/0 in tests.
2018-04-27Merge branch 'siri/kernel/logger/OTP-13295'Siri Hansen
* siri/kernel/logger/OTP-13295: Add documentation of the built-in logger handlers Catch badarg in logger:get_format_depth/0 Add chars_limit option to logger_formatter Don't kill logger process until all other processes are dead Set call timeout for logger_server to infinity Update primary bootstrap Test cuddle for logger Update cth_log_redirect to a logger handler Start using logger internally in kernel and stdlib Remove error_logger process and add logger process Add logger
2018-04-27Merge branch 'hasse/stdlib/rfc3339_datetime/OTP-14764'Hans Bolinder
* hasse/stdlib/rfc3339_datetime/OTP-14764: stdlib: Add RFC 3339 functions to module calendar
2018-04-26[stdlib/sys]: install one debug function more times (#1781)Pouriya
Allow installing multiple instances of sys debug function This commit solves a bug which allowed installing {Fun,State} as sys debug function even if Fun was already installed. This happened in the case when the current State of the debug fun was undefined. Also, the new format {Id,Fun,State} of debug functions can be installed, allowing multiple instances of the same fun.
2018-04-26Merge pull request #1759 from sunboshan/sys-fixSiri Hansen
[stdlib/sys.erl] Fix sys module's debug statistics not including the out message count when using gen_server:call/2. OTP-15047
2018-04-26stdlib: Add RFC 3339 functions to module calendarHans Bolinder
Functions for converting between RFC 3339 strings and system time are added. Options are lists, but we are considering using maps instead. If we change, it will happen after Erlang/OTP 21.0-rc1 is released.
2018-04-26Merge branch 'hasse/stdlib/calendar_systemtime/OTP-13413'Hans Bolinder
* hasse/stdlib/calendar_systemtime/OTP-13413: stdlib: Add system time functions to module calendar
2018-04-26Test cuddle for loggerSiri Hansen
2018-04-25stdlib: Modify the printing of map associations with wWpPHans Bolinder
Use the same depth for all (printed) elements of a map. Since the order of keys can vary when printing a map--maps:iterator/1 and maps:next/1 are used--it is more consistent to print all associations with the same depth. If the associations printed are limited by the depth, the selection of associations is arbitrary, as before.
2018-04-25stdlib: Introduce characters limit of formated stringsHans Bolinder
Inspiration from module lager_format. Also some improvements of Unicode handling. io_lib:format/3 and io_lib:fwrite/3 are new functions. The representation of the options is a list, but we are considering using a map instead. If we change, it will happen after Erlang/OTP 21.0-rc1 is released.
2018-04-25stdlib: Modify ~w/~W when number of characters is limitedHans Bolinder
A bug fix: limited maps end with "...", not "...=>...". A modification: wW separate pairs with " => ", not "=>". When the output is limited on number of characters, the term is balanced by wW the same way as is done with pP (see commit bc38638).
2018-04-25stdlib: Introduce characters limit of formatted stringsHans Bolinder
The name of the io_lib_pretty:print/2 option 'max_chars' is changed to 'line_max_chars' (used by module shell only). The new option for limiting the number of returned characters of io_lib_pretty:print() is called 'chars_limit'.
2018-04-25Merge branch 'hasse/stdlib/map_guards_shell/OTP-15035/ERL-613'Hans Bolinder
* hasse/stdlib/map_guards_shell/OTP-15035/ERL-613: erts: Correct abstract format doc regarding map creation stdlib: Correct the linter's check of map guard expressions
2018-04-24stdlib: Correct the linter's check of map guard expressionsHans Bolinder
The check is used by evaluating modules such as erl_eval. An example: "if map_size(#{}) =:= 0 -> ok end.".
2018-04-24Merge branch 'raimo/stdlib/gen_statem-dev/OTP-14015'Raimo Niskanen
* raimo/stdlib/gen_statem-dev/OTP-14015: Fix after feedback Improve pointer to User's Guide Fix after feedback on 'When to use' Add a 'When to use' section Fix timeout parsing and doc feedback Improve doc, change images to .svg erl_docgen: Implement width in image tag Update User's Guide and pointers to it Improve error reasons from state enter call
2018-04-23Fix sys's debug statistics.Boshan Sun
Currently, in sys:stat/2, the message out only count for system events with format {out, Msg, To}. However, the gen_server:reply/5 will call sys:handle_debug/4 with format {out, Reply, To, State}. That will make the message out count fail to pattern matching. Also update sys_SUITE.erl and relevant docs.
2018-04-21stdlib: Add system time functions to module calendarHans Bolinder
2018-04-20erts: Use table ref for select continuationSverker Eriksson
and not the name. For more sane named table semantics. Applies to both select/1 continuation and trap context.
2018-04-20Merge pull request #1783 from bjorng/bjorn/deprecate-get_stacktrace/OTP-14692Björn Gustavsson
Deprecate erlang:get_stacktrace/1
2018-04-16Remove warnings for improper use of erlang:get_stacktrace/0Björn Gustavsson
Those warnings don't make sense any more since erlang:get_stacktrace/0 is now deprecated.
2018-04-13Add zzz_SUITE with erts_debug:lc_graph last in testsSverker Eriksson
for erts, stdlib, kernel and runtime_tools.
2018-04-12Fix timeout parsing and doc feedbackRaimo Niskanen
2018-03-26Merge pull request #1703 from juhlig/masterHans Bolinder
[ERL-557] add is_empty/1 to sets and ordsets OTP-14996, ERL-557, PR-1703
2018-03-23tests for is_empty/1j.uhlig
2018-03-22Merge branch 'maint'Raimo Niskanen
* maint: Updated OTP version Update release notes Update version numbers ssh: Fix bad spec for double_algs() in ssh.hrl Test event insert from init Fix init to allow all actions Conflicts: OTP_VERSION
2018-03-21stdlib: Make benchmarks more robustHans Bolinder
statistics(runtime) does not seem to work on some virtual machines.
2018-03-21Merge pull request #1740 from rickard-green/rickard/signals/OTP-14589Rickard Green
Implementation of true asynchronous signaling between processes
2018-03-21Implementation of true asynchronous signaling between processesRickard Green
Communication between Erlang processes has conceptually always been performed through asynchronous signaling. The runtime system implementation has however previously preformed most operation synchronously. In a system with only one true thread of execution, this is not problematic (often the opposite). In a system with multiple threads of execution (as current runtime system implementation with SMP support) it becomes problematic. This since it often involves locking of structures when updating them which in turn cause resource contention. Utilizing true asynchronous communication often avoids these resource contention issues. The case that triggered this change was contention on the link lock due to frequent updates of the monitor trees during communication with a frequently used server. The signal order delivery guarantees of the language makes it hard to change the implementation of only some signals to use true asynchronous signaling. Therefore the implementations of (almost) all signals have been changed. Currently the following signals have been implemented as true asynchronous signals: - Message signals - Exit signals - Monitor signals - Demonitor signals - Monitor triggered signals (DOWN, CHANGE, etc) - Link signals - Unlink signals - Group leader signals All of the above already defined as asynchronous signals in the language. The implementation of messages signals was quite asynchronous to begin with, but had quite strict delivery constraints due to the ordering guarantees of signals between a pair of processes. The previously used message queue partitioned into two halves has been replaced by a more general signal queue partitioned into three parts that service all kinds of signals. More details regarding the signal queue can be found in comments in the erl_proc_sig_queue.h file. The monitor and link implementations have also been completely replaced in order to fit the new asynchronous signaling implementation as good as possible. More details regarding the new monitor and link implementations can be found in the erl_monitor_link.h file.
2018-03-20Merge pull request #1744 from uabboli/hasse/stdlib/lists_search/OTP-14675Hans Bolinder
stdlib: Add function lists:search/2
2018-03-17Test event insert from initRaimo Niskanen
2018-03-13Merge pull request #1743 from richcarl/io-format-multiple-modifiersHans Bolinder
Allow multiple modifier characters in io:format control sequences OTP-14971
2018-03-12Allow multiple modifier characters in io:format control sequencesRichard Carlsson
This makes it possible to print unicode atoms at the same time as suppressing detection of printable lists.
2018-03-09stdlib: Add function lists:search/2Hans Bolinder
This is essentially PR 102, https://github.com/erlang/otp/pull/102. The OTP Technical Board decided to change the name of the function to search/2.
2018-03-09Merge pull request #1735 from richcarl/io_lib-unscan-fixHans Bolinder
Make io_lib:unscan_format/1 work with pad char and default precision OTP-14958
2018-03-08stdlib: Improve io_lib:limit_term/2Hans Bolinder
Improve handling of maps. Addendum to b57e890.
2018-03-02Make io_lib:unscan_format/1 work with pad char and default precisionRichard Carlsson
2018-03-01Merge branch 'maint'Dan Gudmundsson
* maint: ERL-558 Add the missing function clause for string:prefix (#1702)
2018-03-01ERL-558 Add the missing function clause for string:prefix (#1702)Seyed Mirsadeghi
OTP-14942