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2012-04-16Optimize process table accessRickard Green
2012-04-01Prepare releaseOTP_R15B01Erlang/OTP
2012-03-30Update copyright yearsBjörn-Egil Dahlberg
2012-03-30Merge branch 'ta/docs-maint' into maintGustav Simonsson
* ta/docs-maint: Fix typos in ct getting_started_chapter.xml Fix typos in driver.xml and erl_driver.xml Fix typos in INSTALL-WIN32.md OTP-10037
2012-03-22Add documentation for dyntrace and system_info changesPatrik Nyblom
2012-03-22Merge branch 'raimo/close-ports-on-halt/OTP-9985' into maintRaimo Niskanen
* raimo/close-ports-on-halt/OTP-9985: erts: Basic test of erlang:halt/0..2 erts: Document erlang:halt/2 and update erlang:halt/0,1 erts: Implement erlang:halt/2 stdlib: Stop working around erlang:halt not flushing erts: Make erlang:halt/0,1 close ports and flush async threads erts: Remove forgotten and unused function erl_exit0 erts: Implement erl_halt erts: Remove unused ntbuild.erl
2012-03-21erts: Document erlang:halt/2 and update erlang:halt/0,1Raimo Niskanen
2012-03-15Fix typos in driver.xml and erl_driver.xmlTuncer Ayaz
2012-03-08doc: Enhance wording and remove typosBjörn-Egil Dahlberg
2012-03-08doc: Move examples and notes into tag-listsBjörn-Egil Dahlberg
2012-03-08doc: Rewording of scheduler_wall_timeBjörn-Egil Dahlberg
2012-03-08doc: Change variable name to 'A' to reflect ActiveBjörn-Egil Dahlberg
2012-03-07doc: Rewording of scheduler busyBjörn-Egil Dahlberg
2012-03-07Update scheduler_wall_time documentationBjörn-Egil Dahlberg
* Add example on calculating scheduler utilization
2012-02-09Merge branch 'bjorn/remove-is_constant-vestiges/OTP-6454' into maintBjörn Gustavsson
* bjorn/remove-is_constant-vestiges/OTP-6454: HiPE: Remove support for is_constant/1 erl_lint: Remove handling of constant/1 erl_bif_types: Remove type for is_constant/1 erl_eval: Remove support for is_constant/1 Remove support for is_constant/1 in ms_transform Remove references to is_constant/1 from the match spec documentation
2012-02-07Merge branch 'dgud/sched-work-time/OTP-9858' into maintPatrik Nyblom
* dgud/sched-work-time/OTP-9858: emulator: Document and test scheduler_wall_time Implement statistics(scheduler_wall_time)
2012-02-07erlang.xml: Fix a few typos and grammatical errorsBjörn Gustavsson
2012-02-06emulator: Document and test scheduler_wall_timeDan Gudmundsson
2012-01-26Remove references to is_constant/1 from the match spec documentationBjörn Gustavsson
is_constant/1 was removed in R13B.
2012-01-03Fix some broken links in documentationLukas Larsson
2011-12-27Prepare releaseErlang/OTP
2011-12-12Prepare releaseErlang/OTP
2011-12-09Merge branch 'raimo/driver-API-doc'Raimo Niskanen
* raimo/driver-API-doc: Driver API: Update documentation for 64-bit sizes
2011-12-09Driver API: Update documentation for 64-bit sizesRaimo Niskanen
2011-12-09Update copyright yearsBjörn-Egil Dahlberg
2011-12-07Merge branch 'sverk/packet_size-http/OTP-9389'Sverker Eriksson
* sverk/packet_size-http/OTP-9389: erts: Remove truncation of http packet parsing and return error instead honor packet_size for http packet parsing to fix OTP-9389
2011-12-06erts: Remove truncation of http packet parsing and return error insteadSverker Eriksson
This is a slight modification of previous commit by Steve Vinoski For backward compatibility of old users of decode_packet, I think it's enough to return error instead of keeping the old line truncation behaviour.
2011-12-05Fix typos in erl(1)Tuncer Ayaz
2011-12-05Fix typo in erts_alloc(3)Tuncer Ayaz
2011-12-05Fix typo in erlang(3)Tuncer Ayaz
2011-12-05Merge branch 'sverk/deprecate-nif-reload'Sverker Eriksson
* sverk/deprecate-nif-reload: erts: Deprecate the NIF reload mechanism OTP-9771
2011-12-02Minor fix of erts_alloc.xmlHans Bolinder
2011-12-01Merge branch 'rickard/deprecate-runtime-binding/OTP-9749'Rickard Green
* rickard/deprecate-runtime-binding/OTP-9749: Deprecate erlang:system_flag/2 arguments scheduler_bind_type and cpu_topology
2011-12-01Deprecate erlang:system_flag/2 arguments scheduler_bind_type and cpu_topologyRickard Green
The use of erlang:system_flag(scheduler_bind_type, _) and erlang:system_flag(cpu_topology, _) have been deprecated and scheduled for removal in erts-5.10/OTP-R16. For more information see the documentation of erlang:system_flag/2.
2011-11-30Merge branch 'rickard/default-unbound/OTP-9726'Rickard Green
* rickard/default-unbound/OTP-9726: Use unbound schedulers as default
2011-11-29erts: Deprecate the NIF reload mechanismSverker Eriksson
The reload mechanism is an odd feature that does not harmonize with how module upgrade is otherwise done. We do not want its presence to hinder future development of code loading and upgrade.
2011-11-18Use unbound schedulers as defaultRickard Green
As of ERTS version 5.9 (OTP-R15B) the runtime system will by default not bind schedulers to logical processors. If the Erlang runtime system is the only operating system process that binds threads to logical processors, this improves the performance of the runtime system. However, if other operating system processes (as for example another Erlang runtime system) also bind threads to logical processors, there might be a performance penalty instead. In some cases this performance penalty might be severe. Due to this, we change the default so that the user must make an active decision in order to bind schedulers.
2011-11-18Merge branch 'rickard/sched-compact-load/OTP-9695'Rickard Green
* rickard/sched-compact-load/OTP-9695: Add switch that can disable scheduler compaction of load
2011-11-16Merge branch 'fm/process_info_doc_fix'Henrik Nord
* fm/process_info_doc_fix: Fix documentation for erlang:process_flag/2 OTP-9714
2011-11-15Add switch that can disable scheduler compaction of loadRickard Green
2011-11-13Merge branch 'rickard/generic-thr-queue/OTP-9632'Rickard Green
* rickard/generic-thr-queue/OTP-9632: Use generic lock-free queue for async threads Use generic lock-free queue for misc aux work Implement generic lock-free queue
2011-11-13Merge branch 'rickard/alloc-opt/OTP-7775'Rickard Green
* rickard/alloc-opt/OTP-7775: Optimize memory allocation Conflicts: erts/aclocal.m4 erts/emulator/hipe/hipe_bif_list.m4 erts/preloaded/ebin/erl_prim_loader.beam erts/preloaded/ebin/erlang.beam erts/preloaded/ebin/init.beam erts/preloaded/ebin/otp_ring0.beam erts/preloaded/ebin/prim_file.beam erts/preloaded/ebin/prim_inet.beam erts/preloaded/ebin/prim_zip.beam erts/preloaded/ebin/zlib.beam
2011-11-13Use generic lock-free queue for async threadsRickard Green
Queues used for communication between async threads and scheduler threads have been replaced with lock-free queues. Drivers using the driver_async functionality are not automatically locked to the system anymore, and can be unloaded as any dynamically linked in driver. Scheduling of ready async jobs is now also interleaved in between other jobs. Previously all ready async jobs was performed at once.
2011-11-13Optimize memory allocationRickard Green
A number of memory allocation optimizations have been implemented. Most optimizations reduce contention caused by synchronization between threads during allocation and deallocation of memory. Most notably: * Synchronization of memory management in scheduler specific allocator instances has been rewritten to use lock-free synchronization. * Synchronization of memory management in scheduler specific pre-allocators has been rewritten to use lock-free synchronization. * The 'mseg_alloc' memory segment allocator now use scheduler specific instances instead of one instance. Apart from reducing contention this also ensures that memory allocators always create memory segments on the local NUMA node on a NUMA system.
2011-11-10Merge branch 'rj/fix-remove-exec-bit'Henrik Nord
* rj/fix-remove-exec-bit: Remove exec bit from files: info files, dat, bat Remove exec bit from files related to: XML, make, C Remove exec bit from: erl, hrl, xml, html, asn, gif, xpm OTP-9698
2011-11-10Merge branch 'rj/fix-erlang-doc-style'Henrik Nord
* rj/fix-erlang-doc-style: Fixes module erlang doc style: option description OTP-9697
2011-11-10Remove exec bit from: erl, hrl, xml, html, asn, gif, xpmRicardo Catalinas Jiménez
2011-11-07Merge branch 'bjorn/fun-improvements/OTP-9667'Björn Gustavsson
* bjorn/fun-improvements/OTP-9667: sys_pre_expand: Remove incorrect comment compiler: Eliminate use of deprecated erlang:hash/2 beam_asm: Fix broken NewIndex in fun entries beam_asm: Strenghten the calculation of Uniq for funs
2011-11-07beam_asm: Strenghten the calculation of Uniq for funsBjörn Gustavsson
Funs are identified by a triple, <Module,Uniq,Index>, where Module is the module name, Uniq is a 27 bit hash value of some intermediate representation of the code for the fun, and index is a small integer. When a fun is loaded, the triple for the fun will be compared to previously loaded funs. If all elements in the triple in the newly loaded fun are the same, the newly loaded fun will replace the previous fun. The idea is that if Uniq are the same, the code for the fun is also the same. The problem is that Uniq is only based on the intermediate representation of the fun itself. If the fun calls local functions in the same module, Uniq may remain the same even if the behavior of the fun has been changed. See http://erlang.org/pipermail/erlang-bugs/2007-June/000368.htlm for an example. As a long-term plan to fix this problem, the NewIndex and NewUniq fields was added to each fun in the R8 release (where NewUniq is the MD5 of the BEAM code for the module). Unfortunately, it turns out that the compiler does not assign unique value to NewIndex (if it isn't tested, it doesn't work), so we cannot use the <Module,NewUniq,NewIndex> triple as identification. It would be possible to use <Module,NewUniq,Index>, but that seems ugly. Therefore, fix the problem by making Uniq more unique by taking 27 bits from the MD5 for the BEAM code. That only requires a change to the compiler. Also update a test case for cover, which now fails because of the stronger Uniq calculation. (The comment in test case about why the Pid2 process survived is not correct.)
2011-11-07EEP-23: Allow variables in fun M:F/ABjörn Gustavsson
Currently, the external fun syntax "fun M:F/A" only supports literals. That is, "fun lists:reverse/1" is allowed but not "fun M:F/A". In many real-life situations, some or all of M, F, A are not known until run-time, and one is forced to either use the undocumented erlang:make_fun/3 BIF or to use a "tuple fun" (which is deprecated). EEP-23 suggests that the parser (erl_parse) should immediately transform "fun M:F/A" to "erlang:make_fun(M, F, A)". We have not followed that approach in this implementation, because we want the abstract code to mirror the source code as closely as possible, and we also consider erlang:make_fun/3 to be an implementation detail that we might want to remove in the future. Instead, we will change the abstract format for "fun M:F/A" (in a way that is not backwards compatible), and while we are at it, we will move the translation from "fun M:F/A" to "erlang:make_fun(M, F, A)" from sys_pre_expand down to the v3_core pass. We will also update the debugger and xref to use the new format. We did consider making the abstract format backward compatible if no variables were used in the fun, but decided against it. Keeping it backward compatible would mean that there would be different abstract formats for the no-variable and variable case, and tools would have to handle both formats, probably forever. Reference: http://www.erlang.org/eeps/eep-0023.html
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