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2018-04-20Update primary bootstrapBjörn Gustavsson
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 The previously used message queue partitioned into two halves has been replaced by a more general signal queue partitioned into three parts that service all kinds of signals.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.
2018-02-14Merge branch 'maint'Björn Gustavsson
* maint: Update primary bootstrap Conflicts: bootstrap/bin/start.boot bootstrap/bin/start_clean.boot bootstrap/lib/compiler/ebin/beam_asm.beam bootstrap/lib/compiler/ebin/beam_jump.beam bootstrap/lib/compiler/ebin/beam_listing.beam bootstrap/lib/compiler/ebin/beam_type.beam bootstrap/lib/compiler/ebin/beam_validator.beam bootstrap/lib/compiler/ebin/compile.beam bootstrap/lib/compiler/ebin/core_pp.beam bootstrap/lib/compiler/ebin/v3_codegen.beam bootstrap/lib/compiler/ebin/v3_kernel_pp.beam bootstrap/lib/kernel/ebin/dist_util.beam bootstrap/lib/kernel/ebin/error_logger.beam bootstrap/lib/kernel/ebin/erts_debug.beam bootstrap/lib/kernel/ebin/group_history.beam bootstrap/lib/kernel/ebin/hipe_unified_loader.beam bootstrap/lib/kernel/ebin/kernel.app bootstrap/lib/kernel/ebin/os.beam bootstrap/lib/kernel/ebin/user.beam bootstrap/lib/stdlib/ebin/array.beam bootstrap/lib/stdlib/ebin/dets.beam bootstrap/lib/stdlib/ebin/edlin.beam bootstrap/lib/stdlib/ebin/erl_lint.beam bootstrap/lib/stdlib/ebin/ets.beam bootstrap/lib/stdlib/ebin/filelib.beam bootstrap/lib/stdlib/ebin/filename.beam bootstrap/lib/stdlib/ebin/gen_statem.beam bootstrap/lib/stdlib/ebin/lib.beam bootstrap/lib/stdlib/ebin/otp_internal.beam bootstrap/lib/stdlib/ebin/qlc.beam bootstrap/lib/stdlib/ebin/shell.beam bootstrap/lib/stdlib/ebin/stdlib.appup bootstrap/lib/stdlib/ebin/string.beam bootstrap/lib/stdlib/ebin/unicode_util.beam
2018-02-14Update primary bootstrapBjörn Gustavsson
2018-01-19Update primary bootstrapBjörn Gustavsson
2017-12-04Update primary bootstrapBjörn Gustavsson
2017-10-13Update primary bootstrapBjörn Gustavsson
2017-09-25Update primary bootstrapBjörn Gustavsson
2017-09-08Update primary bootstrapBjörn Gustavsson
2017-07-07Update primary bootstrapBjörn Gustavsson
2017-06-14Update primary bootstrapRickard Green
2017-05-19Update primary bootstrapBjörn Gustavsson
2017-04-26Update primary bootstrapBjörn Gustavsson
2017-04-20Update primary bootstrapBjörn Gustavsson
2017-03-24Update primary bootstrapBjörn-Egil Dahlberg
2017-02-01Update primary bootstrapBjörn Gustavsson
2016-11-23Update primary bootstrapBjörn Gustavsson
2016-09-02Update primary bootstrapBjörn Gustavsson
2016-04-18Update primary bootstrapBjörn Gustavsson
2015-12-14Update primary bootstrapBjörn Gustavsson
2015-08-24Update primary bootstrapBjörn Gustavsson
2015-06-04Update primary bootstrapBjörn Gustavsson
2015-04-29Update primary bootstrapBjörn Gustavsson
2015-03-20Merge branch 'rickard/time_api/OTP-11997'Rickard Green
* rickard/time_api/OTP-11997: (22 commits) Update primary bootstrap inets: Suppress deprecated warning on erlang:now/0 inets: Cleanup of multiple copies of functions Add inets_lib with common functions used by multiple modules inets: Update comments Suppress deprecated warning on erlang:now/0 Use new time API and be back-compatible in inets Remove unused functions and removed redundant test asn1 test SUITE: Eliminate use of now/0 Disable deprecated warning on erlang:now/0 in diameter_lib Use new time API and be back-compatible in ssh Replace all calls to now/0 in CT with new time API functions test_server: Replace usage of erlang:now() with usage of new API Replace usage of erlang:now() with usage of new API Replace usage of erlang:now() with usage of new API Replace usage of erlang:now() with usage of new API Replace usage of erlang:now() with usage of new API otp_SUITE: Warn for calls to erlang:now/0 Replace usage of erlang:now() with usage of new API Multiple timer wheels Erlang based BIF timer implementation for scalability Implement ethread events with timeout ... Conflicts: bootstrap/bin/start.boot bootstrap/bin/start_clean.boot bootstrap/lib/compiler/ebin/beam_asm.beam bootstrap/lib/compiler/ebin/compile.beam bootstrap/lib/kernel/ebin/auth.beam bootstrap/lib/kernel/ebin/dist_util.beam bootstrap/lib/kernel/ebin/global.beam bootstrap/lib/kernel/ebin/hipe_unified_loader.beam bootstrap/lib/kernel/ebin/inet_db.beam bootstrap/lib/kernel/ebin/inet_dns.beam bootstrap/lib/kernel/ebin/inet_res.beam bootstrap/lib/kernel/ebin/os.beam bootstrap/lib/kernel/ebin/pg2.beam bootstrap/lib/stdlib/ebin/dets.beam bootstrap/lib/stdlib/ebin/dets_utils.beam bootstrap/lib/stdlib/ebin/erl_tar.beam bootstrap/lib/stdlib/ebin/escript.beam bootstrap/lib/stdlib/ebin/file_sorter.beam bootstrap/lib/stdlib/ebin/otp_internal.beam bootstrap/lib/stdlib/ebin/qlc.beam bootstrap/lib/stdlib/ebin/random.beam bootstrap/lib/stdlib/ebin/supervisor.beam bootstrap/lib/stdlib/ebin/timer.beam erts/aclocal.m4 erts/emulator/beam/bif.c erts/emulator/beam/erl_bif_info.c erts/emulator/beam/erl_db_hash.c erts/emulator/beam/erl_init.c erts/emulator/beam/erl_process.h erts/emulator/beam/erl_thr_progress.c erts/emulator/beam/utils.c erts/emulator/sys/unix/sys.c erts/preloaded/ebin/erlang.beam erts/preloaded/ebin/erts_internal.beam erts/preloaded/ebin/init.beam erts/preloaded/src/erts_internal.erl lib/common_test/test/ct_hooks_SUITE_data/cth/tests/empty_cth.erl lib/diameter/src/base/diameter_lib.erl lib/kernel/src/os.erl lib/ssh/test/ssh_basic_SUITE.erl system/doc/efficiency_guide/advanced.xml
2014-06-18Update primary bootstrapMagnus Lidén
2013-12-18Update primary bootstrapBjörn Gustavsson
2013-12-05Update primary bootstrapSverker Eriksson
2013-02-11Update primary bootstrapBjörn Gustavsson
2012-10-10Update primary bootstrapBjörn Gustavsson
2012-03-30Update primary bootstrapBjörn-Egil Dahlberg
2011-11-07Update primary bootstrapBjörn Gustavsson
2011-08-25Update primary bootstrapBjörn Gustavsson
2010-06-02Update bootstrap compilerBjörn Gustavsson
2009-12-11Update bootstrap compilerBjörn Gustavsson
2009-11-20The R13B03 release.OTP_R13B03Erlang/OTP