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2016-04-06erts: Teach lttng to configure and build systemBjörn-Egil Dahlberg
Introduce a wrapper API for lttng.
2016-03-16Take out (parts of) broken fp exception support for MacOS XBjörn Gustavsson
Floating-point exception support on MacOS X has never been especially reliable, and has therefore been disabled by default for a long time. The fpe support is now broken. Therefore, take out the unnecessary test for modern mcontext in configure (whatever that means) and the associated code in sys_float.c. Add #error directives to sys_float.c to make it clear that fpe is not supported. It seems to risky to mess with the mess of #ifdef's, so we will not attempt to remove all fpe support code for MacOS X.
2016-03-15Merge branch 'egil/fix-fdatasync-mac/OTP-13411'Björn-Egil Dahlberg
* egil/fix-fdatasync-mac/OTP-13411: erts: Use fcntl(fd, F_FULLFSYNC) instead of fdatasync on Mac OSX
2016-03-15erts: Use fcntl(fd, F_FULLFSYNC) instead of fdatasync on Mac OSXBjörn-Egil Dahlberg
The syscall fdatasync does not work as intended on Mac OSX. Both the function fsync and fdatasync now uses fcntl(fd, F_FULLFSYNC) on Mac OSX.
2016-03-15Merge branch 'egil/extend-ttsl_drv-logging'Björn-Egil Dahlberg
* egil/extend-ttsl_drv-logging: erts: Increase ttsl_drv logging capabilities
2016-03-14erts: Increase ttsl_drv logging capabilitiesBjörn-Egil Dahlberg
2016-03-14Tweak bs_construct_SUITEBjörn-Egil Dahlberg
2016-03-14Tweak port_SUITEBjörn-Egil Dahlberg
2016-03-11Fix module_info_SUITEBjörn-Egil Dahlberg
2016-03-11Fix send_term_SUITEBjörn-Egil Dahlberg
2016-03-11Cleaner map_SUITEBjörn-Egil Dahlberg
2016-03-11Remove ?line macrosBjörn-Egil Dahlberg
2016-03-11Eliminate use of doc and suite clausesBjörn-Egil Dahlberg
Those clause are obsolete and never used by common_test.
2016-03-11Replace ?t with test_serverBjörn-Egil Dahlberg
The macro ?t is deprecated. Replace its use with 'test_server'.
2016-03-11Eliminate use of ?config() macroBjörn-Egil Dahlberg
2016-03-11Replace use of test_server:format/2 with io:format/2Björn-Egil Dahlberg
2016-03-11Eliminate use of test_server:fail/0,1Björn-Egil Dahlberg
2016-03-11Modernize use of timetrapsBjörn-Egil Dahlberg
2016-03-11Merge branch 'vinoski/ds-avoid-lock'Rickard Green
* vinoski/ds-avoid-lock: Skip run queue lock check for dirty schedulers
2016-03-11Merge branch 'rickard/ds-sched-suspend'Rickard Green
* rickard/ds-sched-suspend: Improved scheduler suspend functionality
2016-03-10Improved scheduler suspend functionalityRickard Green
- The calling process is now suspended while synchronizing scheduler suspends via erlang:system_flag(schedulers_online, _) and erlang:system_flag(multi_scheduling, _), instead of blocking the scheduler thread in the BIF call waiting for the operation to synchronize. Besides releasing the scheduler for other work (or immediate suspend) it also makes it possible to abort the operation by killing the process. - erlang:system_flag(schedulers_online, _) now only wait for normal schedulers to complete before it returns. This since it may take a very long time before all dirty schedulers suspends. - erlang:system_flag(multi_scheduling, block_normal|unblock_normal) which only operate on normal schedulers has been introduced. This since there are use cases where suspend of dirty schedulers are not of interest (hipe loader). - erlang:system_flag(multi_scheduling, block) still blocks all dirty schedulers as well as all normal schedulers except one since it is hard to redefine what multi scheduling block means. - The three operations: - changing amount of schedulers online - blocking/unblocking normal multi scheduling - blocking/unblocking full multi scheduling can now be done in parallel. This is important since otherwise a full multi scheduling block would potentially delay the other operations for a very long time.
2016-03-09Merge branch 'maint'Sverker Eriksson
2016-03-09erts: Fix wobbling tests in nif_SUITESverker Eriksson
No point in checking tmp_alloc instance 0 as any non-scheduler thread could race us.
2016-03-08Merge branch 'sverk/literal-alloc-polish'Sverker Eriksson
* sverk/literal-alloc-polish: erts: Add emulator flag +MIscs for literal super carrier size erts: Refactor init of erts_literal_mmapper erts: Make literal_alloc documented and configurable
2016-03-08Merge branch 'maint'Sverker Eriksson
2016-03-08erts: Fix alloc_SUITE:rbtree and migration for win64Sverker Eriksson
One little (unsigned long) left behind.
2016-03-08Merge branch 'maint'Sverker Eriksson
2016-03-08test: do not divide by zeroDan Gudmundsson
2016-03-01Merge branch 'sverk/master/halt-INT_MIN'Sverker Eriksson
* sverk/master/halt-INT_MIN: erts: Make erlang:halt() accept bignums as Status erts: Change erl_exit into erts_exit kernel: Remove calls to erl_exit
2016-03-01Merge branch 'sverk/halt-INT_MIN' into maintSverker Eriksson
OTP-13251 * sverk/halt-INT_MIN: erts: Make erlang:halt() accept bignums as Status erts: Change erl_exit into erts_exit kernel: Remove calls to erl_exit
2016-02-29Fix build wihtout thread supportRickard Green
2016-02-26Merge branch 'bjorn/multiple-load/OTP-13111'Björn Gustavsson
* bjorn/multiple-load/OTP-13111: code: Add functions that can load multiple modules Refactor post_beam_load handling Simplify and robustify code_server:all_loaded/1 Update preloaded modules Add erl_prim_loader:get_modules/3 Add has_prepared_code_on_load/1 BIF Allow erlang:finish_loading/1 to load more than one module beam_load.c: Add a function to check for an on_load function
2016-02-25Merge branch 'maint'Björn-Egil Dahlberg
Conflicts: erts/emulator/beam/erl_alloc.types erts/emulator/beam/erl_bif_info.c erts/emulator/beam/erl_process.c erts/preloaded/ebin/erts_internal.beam
2016-02-25Merge branch 'egil/heart-callback/OTP-13250' into maintBjörn-Egil Dahlberg
2016-02-25Add has_prepared_code_on_load/1 BIFBjörn Gustavsson
2016-02-25Allow erlang:finish_loading/1 to load more than one moduleBjörn Gustavsson
The BIFs prepare_loading/2 and finish_loading/1 have been designed to allow fast loading in parallel of many modules. Because of the complications with on_load functions, the initial implementation of finish_loading/1 only allowed a single element in the list of prepared modules. finish_loading/1 does not suspend other processes, but it must wait for all schedulers to pass a write barrier ("thread progress"). The time for all schedulers to pass the write barrier is highly variable, depending on what kind of code they are executing. Therefore, allowing finish_loading/1 to finish the loading for more than one module before passing the write barrier could potentially be much faster than calling finish_loading/1 multiple times. The test case many/1 run on my computer shows that with "heavy load", finish loading of 100 modules in parallel is almost 50 times faster than loading them sequentially. With "light load", the gain is still almost 10 times. Here follows an actual sample of the output from the test case on my computer (an 2012 iMac): Light load ========== Sequential: 22361 µs Parallel: 2586 µs Ratio: 9 Heavy load ========== Sequential: 254512 µs Parallel: 5246 µs Ratio: 49
2016-02-24Merge branch 'master' into sverk/master/halt-INT_MINSverker Eriksson
2016-02-24erts: Make erlang:halt() accept bignums as StatusSverker Eriksson
Just mask away the high bits to get a more tolerant erlang:halt that behaves the same on 32 and 64 bit architectures.
2016-02-24erts: Change erl_exit into erts_exitSverker Eriksson
This is mostly a pure refactoring. Except for the buggy cases when calling erlang:halt() with a positive integer in the range -(INT_MIN+2) to -INT_MIN that got confused with ERTS_ABORT_EXIT, ERTS_DUMP_EXIT and ERTS_INTR_EXIT. Outcome OLD erl_exit(n, ) NEW erts_exit(n, ) ------- ------------------- ------------------------------------------- exit(Status) n = -Status <= 0 n = Status >= 0 crashdump+abort n > 0, ignore n n = ERTS_ERROR_EXIT < 0 The outcome of the old ERTS_ABORT_EXIT, ERTS_INTR_EXIT and ERTS_DUMP_EXIT are the same as before (even though their values have changed).
2016-02-24Merge branch 'maint'Rickard Green
* maint: Do not wait for main lock when looking up process not running
2016-02-23Do not wait for main lock when looking up process not runningRickard Green
2016-02-23erts: Add emulator flag +MIscs for literal super carrier sizeSverker Eriksson
2016-02-23erts: Refactor init of erts_literal_mmapperSverker Eriksson
2016-02-23erts: Make literal_alloc documented and configurableSverker Eriksson
Except it cannot be disabled and cannot be multi-threaded. The bit-vector 'erts_literal_vspace_map' on 32-bit is currently only protected by the literal allocator mutex. We could allow multiple instances on 64-bit (I think), but what would be the point?
2016-02-22Merge branch 'maint'Sverker Eriksson
2016-02-22Merge branch 'sverk/proc-lock-check-fix' into maintSverker Eriksson
* sverk/proc-lock-check-fix: erts: Fix lock checker for process locks
2016-02-21Skip run queue lock check for dirty schedulersSteve Vinoski
The wake_scheduler function asserts that the run queue is not locked, but this assertion sometimes fails for dirty schedulers (in January 2016 a user in erlang-questions reported a dirty schedulers problem related to this). After discussing it with Rickard, we decided modifying the assertion was the most practical way to address the problem.
2016-02-20beam_load.c: Add a function to check for an on_load functionBjörn Gustavsson
We will need a way to check whether an prepared BEAM modules has an on_load function.
2016-02-19Merge branch 'rickard/rq-state-bug/OTP-13298' into maintRickard Green
* rickard/rq-state-bug/OTP-13298: Fix bug causing run-queue mask to become inconsistent
2016-02-18erts: Fix lock checker for process locksSverker Eriksson
Do lock order check *before* trying to seize lock... duh!
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