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2016-03-18erts: Fix pthread_setname_np warning on osxLukas Larsson
2016-02-22Merge branch 'maint'Rickard Green
* maint: Improve cmpxchg8b/cmpxchg16b inline asm Improve cmpxchg8b inline asm configure test
2016-02-18Improve cmpxchg8b/cmpxchg16b inline asmRickard Green
Clang didn't like that ecx/rcx was mapped to input and output variables of different types.
2016-02-17Improve cmpxchg8b inline asm configure testRickard Green
2016-02-02erts: Add power saving cpu feature tests and use themLukas Larsson
2016-02-02erts: Add rdtscp instruction checkLukas Larsson
2015-11-23Merge branch 'maint'Dan Gudmundsson
* maint: win32: Fix mixed cygwin and msys configure tests
2015-11-12win32: Fix mixed cygwin and msys configure testsDan Gudmundsson
And test for mixed msys in emulator
2015-09-09Merge branch 'maint'Rickard Green
* maint: Add configure switch --disable-saved-compile-time Fix ethread events with timeout Improve choice of clock sources at build time
2015-08-27Fix ethread events with timeoutRickard Green
Lots of pthread platforms unnecessarily falled back on the pipe/select solution. This since we tried to use the same monotonic clock source for pthread_cond_timedwait() as used by OS monotonic time. This has been fixed on most platforms by using another clock source. Darwin can however not use pthread_cond_timedwait() with monotonic clock source and has to use the pipe/select solution. On darwin we now use select with _DARWIN_UNLIMITED_SELECT in order to be able to handle a large amount of file descriptors.
2015-07-10ose: Remove all code related to the OSE portLukas Larsson
The OSE port is no longer supported and this commit removed it and any changes related to it. The things that were general improvements have been left in the code.
2015-06-24erts: Remove halfword relative printfBjörn-Egil Dahlberg
2015-06-24erts: Remove halfword in lib_srcBjörn-Egil Dahlberg
2015-06-18Change license text to APLv2Bruce Yinhe
2015-03-20Merge branch 'rickard/gcc-atomics/OTP-12383'Rickard Green
* rickard/gcc-atomics/OTP-12383: Improve ethread atomics based on GCC builtins Conflicts: erts/aclocal.m4
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
2015-03-20Implement ethread events with timeoutRickard Green
2015-03-20Introduce a new time APIRickard Green
The old time API is based on erlang:now/0. The major issue with erlang:now/0 is that it was intended to be used for so many unrelated things. This tied these unrelated operations together and unnecessarily caused performance, scalability as well as accuracy, and precision issues for operations that do not need to have such issues. The new API spreads different functionality over multiple functions in order to improve on this. The new API consists of a number of new BIFs: - erlang:convert_time_unit/3 - erlang:monotonic_time/0 - erlang:monotonic_time/1 - erlang:system_time/0 - erlang:system_time/1 - erlang:time_offset/0 - erlang:time_offset/1 - erlang:timestamp/0 - erlang:unique_integer/0 - erlang:unique_integer/1 - os:system_time/0 - os:system_time/1 and a number of extensions of existing BIFs: - erlang:monitor(time_offset, clock_service) - erlang:system_flag(time_offset, finalize) - erlang:system_info(os_monotonic_time_source) - erlang:system_info(time_offset) - erlang:system_info(time_warp_mode) - erlang:system_info(time_correction) - erlang:system_info(start_time) See the "Time and Time Correction in Erlang" chapter of the ERTS User's Guide for more information.
2015-01-14Improve ethread atomics based on GCC builtinsRickard Green
* Use of __atomic builtins when available. * Improved configure test that checks for missing memory barrier in __sync_synchronize(). The old approach was to verify known working gcc versions and check gcc version at compile time. Besides not being very safe, the old approach often unnecessarily caused usage of the very expensive workaround. * Introduced (no overhead) workaround for missing clobber in __sync_synchronize() when using buggy LLVM implementation of __sync_synchronize(). * Implement native memory barriers for ARM processors supporting the DMB instruction. * Use of volatile store on Alpha as atomic set operation if no __atomic_store_n() is available (already used on x86/x86_64 Sparc V9, PowerPC, and MIPS). Fallback used when not using volatile store is typically very expensive. * Use volatile load on Alpha and ARM as atomic read operation if no __atomic_load_n() is available (already used on x86/x86_64 Sparc V9, PowerPC, and MIPS). Fallback when not using volatile load is typically very expensive.
2014-12-19erts: Introduce thread suspend functionsLukas Larsson
These functions allow any thread to suspend any other thread immediately and then resume all threads. This is useful when doing a crash dump in order to get a more accurate picture of what state the system is in.
2014-12-19erts: Add support for thread namesLukas Larsson
2014-11-25Merge branch 'rickard/ppc32-atomic-opt/OTP-12250' into maintRickard Green
* rickard/ppc32-atomic-opt/OTP-12250: Optimize atomic ops with release barrier for 32-bit PowerPC
2014-11-10Implement support for double word atomics using libatomic_opsRickard Green
2014-11-10Improve usage of libatomic_ops for word size atomicsRickard Green
Use AO_fetch_compare_and_swap*() when present
2014-10-17Optimize atomic ops with release barrier for 32-bit PowerPCRickard Green
2014-06-30erts: Separate ethread inlining from ethread.hBjörn-Egil Dahlberg
The commit adb5dc0090bc419e2c4c1250653badbddeb6263b (ETHR_FORCE_INLINE) broke some platforms without adequate thread support.
2014-06-16Merge branch 'jjhoo/mingw_compile_fix_forceinline/OTP-11945' into maintRickard Green
* jjhoo/mingw_compile_fix_forceinline/OTP-11945: Fix redefinition of ETHR_FORCE_INLINE
2014-06-16Fix redefinition of ETHR_FORCE_INLINERickard Green
2014-06-06Merge branch 'jjhoo/mingw_compile_fix_forceinline/OTP-11945' into maintRickard Green
* jjhoo/mingw_compile_fix_forceinline/OTP-11945: Do not use __always_inline__ attribute unless gcc vsn >= 3.1.1 Add ETHR_FORCE_INLINE define to hide compiler specific directives
2014-05-22Do not use __always_inline__ attribute unless gcc vsn >= 3.1.1Rickard Green
2014-03-26ose: Fix erts assert failed printoutsLukas Larsson
2014-03-26ose: Yielding has to be done differently for background processes.Robert Paal
2014-02-28Add ETHR_FORCE_INLINE define to hide compiler specific directivesJani Hakala
Some win32 specific code does not compile with gcc (mingw-w64) since '__forceinline' is not supported by gcc. This can be avoided by defining a new macro ETHR_FORCE_INLINE similar to ETHR_INLINE.
2014-02-24Merge branch 'lukas/ose/master/OTP-11334'Lukas Larsson
* lukas/ose/master/OTP-11334: (71 commits) erts: Fix unix efile assert ose: Use -O2 when building ose: Expand OSE docs ose: Add dummy ttsl driver ose: Cleanup cleanup of mutex selection defines ose: Polish mmap configure checks ose: Add ose specific x-compile flags ose: Updating fd_driver and spawn_driver for OSE ose: Updating event and signal API for OSE ose: Cleanup of mutex selection defines win32: Compile erl_log.exe ose: Remove uneccesary define ose: Fix ssl configure test for osx erts: Fix sys_msg_dispatcher assert ose: Fix broken doc links ose: Thread priorities configurable from lmconf ose: Yielding the cpu is done "the OSE" way ose: Start using ppdata for tse key ose: Do not use spinlocks on OSE ose: Fix support for crypto ... Conflicts: lib/crypto/c_src/crypto.c
2014-02-24ose: Cleanup of mutex selection definesLukas Larsson
2014-02-24ose: Remove uneccesary defineLukas Larsson
2014-02-24ose: Thread priorities configurable from lmconfLukas Larsson
The pattern used for getting the priority from the lmconf is based on the name of the process created. The pattern is: ERTS_%%PROCESS_NAME%%_PRIO with the %%PROCESS_NAME%% replaced by the prefix of the process the priority applies to. eg: ERTS_SCHEDULER_PRIO=24 applies to processes with name SCHEDULER_1, SCHEDULER_2 etc.
2014-02-24ose: Yielding the cpu is done "the OSE" wayLukas Larsson
2014-02-24ose: Start using ppdata for tse keyLukas Larsson
2014-02-24ose: Do not use spinlocks on OSELukas Larsson
This is because it is very easy to deadlock/livelock inbetween processes on OSE.
2014-02-24ose,erts: Specify name for tsd keysLukas Larsson
This simplified debugging on OSE and also limits the number of ppdata keys that are created when beam is restarted.
2014-02-24ose: Change get_envp to ose_get_ppdata for tsdLukas Larsson
There is a system limit on the number of ppdata that is available but that should not be reached, and ppdata is faster than using get_envp.
2014-02-24ose: Debug wait__ does receive_fsem instead of wait_fsemLukas Larsson
This is done in order to catch rogue signals
2014-02-24Added support for ENEA OSELukas Larsson
This port has support for both non-smp and smp. It contains a new way to do io checking in which erts_poll_wait receives the payload of the polled entity. This has implications for all linked-in drivers.
2014-02-23Introduce configure option --with-assumed-cache-line-size=SIZERickard Green
2014-01-28initial support for dirty schedulers and dirty NIFsSteve Vinoski
Add initial support for dirty schedulers. There are two types of dirty schedulers: CPU schedulers and I/O schedulers. By default, there are as many dirty CPU schedulers as there are normal schedulers and as many dirty CPU schedulers online as normal schedulers online. There are 10 dirty I/O schedulers (similar to the choice of 10 as the default for async threads). By default, dirty schedulers are disabled and conditionally compiled out. To enable them, you must pass --enable-dirty-schedulers to the top-level configure script when building Erlang/OTP. Current dirty scheduler support requires the emulator to be built with SMP support. This restriction will be lifted in the future. You can specify the number of dirty schedulers with the command-line options +SDcpu (for dirty CPU schedulers) and +SDio (for dirty I/O schedulers). The +SDcpu option is similar to the +S option in that it takes two numbers separated by a colon: C1:C2, where C1 specifies the number of dirty schedulers available and C2 specifies the number of dirty schedulers online. The +SDPcpu option allows numbers of dirty CPU schedulers available and dirty CPU schedulers online to be specified as percentages, similar to the existing +SP option for normal schedulers. The number of dirty CPU schedulers created and dirty CPU schedulers online may not exceed the number of normal schedulers created and normal schedulers online, respectively. The +SDio option takes only a single number specifying the number of dirty I/O schedulers available and online. There is no support yet for programmatically changing at run time the number of dirty CPU schedulers online via erlang:system_flag/2. Also, changing the number of normal schedulers online via erlang:system_flag(schedulers_online, NewSchedulersOnline) should ensure that there are no more dirty CPU schedulers than normal schedulers, but this is not yet implemented. You can retrieve the number of dirty schedulers by passing dirty_cpu_schedulers, dirty_cpu_schedulers_online, or dirty_io_schedulers to erlang:system_info/1. Currently only NIFs are able to access dirty scheduler functionality. Neither drivers nor BIFs currently support dirty schedulers. This restriction will be addressed in the future. If dirty scheduler support is present in the runtime, the initial status line Erlang prints before presenting its interactive prompt will include the indicator "[ds:C1:C2:I]" where "ds" indicates "dirty schedulers", "C1" indicates the number of dirty CPU schedulers available, "C2" indicates the number of dirty CPU schedulers online, and "I" indicates the number of dirty I/O schedulers. Document The dirty NIF API in the erl_nif man page. The API closely follows Rickard Green's presentation slides from his talk "Future Extensions to the Native Interface", presented at the 2011 Erlang Factory held in the San Francisco Bay Area. Rickard's slides are available online at http://bit.ly/1m34UHB . Document the new erl command-line options, the additions to erlang:system_info/1, and also add the erlang:system_flag/2 dirty scheduler documentation even though it's not yet implemented. To determine whether the dirty NIF API is available, native code can check to see whether the C preprocessor macro ERL_NIF_DIRTY_SCHEDULER_SUPPORT is defined. To check if dirty schedulers are available at run time, native code can call the boolean enif_have_dirty_schedulers() function, and Erlang code can call erlang:system_info(dirty_cpu_schedulers), which raises badarg if no dirty scheduler support is available. Add a simple dirty NIF test to the emulator NIF suite.
2013-08-08Merge branch 'lukas/erts/ethr_smp_req_native_compiletime/OTP-11196' into maintLukas Larsson
* lukas/erts/ethr_smp_req_native_compiletime/OTP-11196: Bailout if no native implementations are found
2013-07-29Bailout if no native implementations are foundLukas Larsson
Some basic tests are already done in configure. This makes sure we cover all cases by bailing out when compiling as well.
2013-07-18Fix compile error on ARM and GCC < 4.1.0Johannes Weißl
Since b29ecbd (OTP-10418, R15B03) Erlang does not compile anymore with old versions of GCC that do not have atomic ops builtins on platforms where there is no native ethread implementation (e.g. ARM): In file included from ../include/internal/gcc/ethread.h:29, from ../include/internal/ethread.h:354, from beam/erl_threads.h:264, from beam/erl_smp.h:27, from beam/sys.h:413, from hipe/hipe_mkliterals.c:29: ../include/internal/gcc/ethr_membar.h:49:4: error: #error "No __sync_val_compare_and_swap" This patch adds a header guard in "gcc/ethread.h", as is present in "libatomic_ops/ethread.h".
2013-07-11Fix ‘ethr_native_rwlock_destroy’ defined but not used warningRickard Green
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