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2015-09-09Merge branch 'rickard/clock-sources/OTP-12945' into maintRickard Green
* rickard/clock-sources/OTP-12945: Improve choice of clock sources at build time
2015-09-09Merge branch 'rickard/event-tmo/OTP-12954' into maintRickard Green
* rickard/event-tmo/OTP-12954: Fix ethread events with timeout
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.
2015-08-21Improve choice of clock sources at build timeRickard Green
- Documented the configure switch --with-clock-resolution=<RES> - Changed default clock source for OS system time on Darwin to gettimeofday(). In order to use clock_get_time(CALENDER_CLOCK, ...) on Darwin, the user has to pass --with-clock-resolution=high when configuring the build.
2015-07-08Merge branch 'maint-18' into maintRickard Green
* maint-18: Updated OTP version Prepare release Fix calculation of end time Prefer monotonic time that stop during suspend Avoid unnecessary copying of data when retrieving corrected monotonic time Add the --enable-gettimeofday-as-os-system-time configure switch
2015-07-08Prefer monotonic time that stop during suspendRickard Green
2015-07-07Add the --enable-gettimeofday-as-os-system-time configure switchRickard Green
Forces usage of gettimeofday() for OS system time
2015-07-02erts: Fix configure pthread_getnameBjörn-Egil Dahlberg
2015-06-18Change license text to APLv2Bruce Yinhe
2015-05-08Merge branch 'rickard/time-improvement/OTP-11997'Rickard Green
* rickard/time-improvement/OTP-11997: Allow execution of estone suite on pre OTP-18 systems Add parallel time monotonicity test-case Replace usage of erlang:now() in line-tracing Replace erlang:now() usage in emulator suite Replace erlang:now() usage in system suite Misc time improvements
2015-05-06Misc time improvementsRickard Green
- Possibility to chose different clock sources - Improved mach clock usage - Improved linux clock_gettime() usage - ...
2015-04-29erts: Fix incorrect use of AC_EGREP_CPPJohan Oudinet
Using 'AC_EGREP_CPP(yes' without restraining the pattern always return true if it runs from a path containing the string 'yes'.
2015-03-25Merge branch 'rickard/time_api/OTP-11997'Rickard Green
* rickard/time_api/OTP-11997: Skip not updated test-cases Fixes and cleanup
2015-03-25Fixes and cleanupRickard Green
2015-03-24Merge branch 'rickard/time_api/OTP-11997'Rickard Green
* rickard/time_api/OTP-11997: Better OS system time implementation Documentation adjustments Fix zero timout timers erts_sys_hrtime() for lcnt Better support for poor os monotonic sources Conflicts: erts/preloaded/ebin/erlang.beam
2015-03-24Better OS system time implementationRickard Green
2015-03-23Better support for poor os monotonic sourcesRickard Green
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.
2015-03-17Merge branch 'maint'Rickard Green
* maint: Fix missing quotation in LM_FIND_EMU_CC
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.
2015-01-05Fix missing quotation in LM_FIND_EMU_CCRickard Green
2014-12-19Merge branch 'lukas/erts/crashdump_improvements/OTP-12377'Lukas Larsson
* lukas/erts/crashdump_improvements/OTP-12377: erts: Make main thread safe from pipe closed event erts: Improve crash dumps erts: Rename sys_sigset to sys_signal erts: Introduce thread suspend functions erts: Remove usage of QUANTIFY signal erts: Add support for thread names ets: Increase data available in crash dumps and ets:info erts: Start compilation of beam_emu earlier
2014-12-19erts: Add support for thread namesLukas Larsson
2014-12-09erts: Allow cpu_timestamp tracing for LinuxLukas Larsson
2014-11-10Improve usage of libatomic_ops for word size atomicsRickard Green
Use AO_fetch_compare_and_swap*() when present
2014-05-09erts: Fix various autoconf issuesLukas Larsson
* Check of atomics on bsd * Add --enable-systemd for epmd * Remove unused --enable-tsp option
2014-03-26ose: Break lmconf into one per load moduleLukas Larsson
2014-02-24ose: Fix check for HAVE_OSE_SPI_HLukas Larsson
2014-02-24ose: Fix various build environment issuesLukas Larsson
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.
2013-07-12Fix configure detection of ethread native atomics on powerpcRickard Green
2013-07-09Refuse to build SMP runtime by default without native atomicsRickard Green
Build with fallback can be enabled by passing the `configure` command line argument `--disable-smp-require-native-atomics`
2013-01-25Update copyright yearsBjörn-Egil Dahlberg
2013-01-15Fix LM_TRY_ENABLE_CFLAG to use correct environmentBjörn-Egil Dahlberg
LM_TRY_ENABLE_CFLAG takes which environment variable should be updated but only CFLAGS was updated. Though CFLAGS is the normally the intended variable, others may be used. For instance CXXFLAGS.
2013-01-11If GCC is used, treat -Wreturn-type as errorTuncer Ayaz
2012-11-14Teach erl_interface configure more pthread supportPer Hedeland
- Teach lib/erl_interface/configure.in to look for pthreads support in libc (where it can be found on QNX) - A minor tweak such that this configure *fails* if you pass --enable-threads and no pthreads support can be found.
2012-08-31Update copyright yearsBjörn-Egil Dahlberg
2012-07-20Revise the autoconf tests for double middle endianness.Mike Sperber
The previous iteration didn't work for big-endian systems. Now use code very close to what Erts does internally. Also, only warn when the double endianness is unknown - i.e. when we're cross-compiling.
2012-03-23Unbreak floating point on middle-endian machines.Mike Sperber
On some ARMs (and maybe other platforms), doubles are stored with the the two 32-bit words reversed with respect to more common architectures. The symptom is this: > io_lib:write(1.0). "0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005299808824" Detect that and account for it when decoding floats.
2011-12-02Make Win64 build work both under MSYS and CygwinPatrik Nyblom
2011-12-02Get cerl and distribution working in Win64Patrik Nyblom
Can still not setup -a, but cerl works.
2011-12-02Build Win64 Erlang emulator using MSYSunknown
Still does not run, just compiles.
2011-11-25configure: Define NO_JUMP_TABLE if all we have is llvm-gccBjörn Gustavsson
Commit dd24ca1cb76d attempts to fix the problem that LLVM-based compilers (such as llvm-gcc-4.2 and clang) miscompiles beam_emu.c. The idea was to force the use of gcc-4.2 if the default compiler was LLVM-based. Since that fix, Apple released Xcode 4.2 that does not include any version of gcc, only llvm-gcc-4.2 and clang. We could require gcc in order to be the system, but it would be nice if Erlang/OTP could be built out-of-box on MacOS X, albeit with reduced performance. Therefore, make sure that we set NO_JUMP_TABLE (use a switch statement instead of computed gotos in beam_emu.c) if no compiler that correctly handles computed gotos can be found. We know that clang based on the upcoming LLVM 3.0 will work, but older LLVM-based compilers will not, so we can test the version of clang. llvm-gcc has been discontinued in LLVM 3.0, so if the compiler is LLVM-based but not clang, we can assume that it does not handles computed gotos correctly.
2011-10-19Fix erroneous merge resolutionRickard Green
Previously removed code erroneously reappeared in a merge to the master branch (ec36499d7e329b4dc69a1a3be3422eac7907c260).
2011-09-21Merge branch 'dev' into majorBjörn Gustavsson
* dev: erl_bif_types: Fix types for lists:key{search,find,member}/3 Fix build problems on MacOS 10.7 (Lion)
2011-09-21Merge branch 'bjorn/erts/support-macosx-lion/OTP-9547' into devBjörn Gustavsson
* bjorn/erts/support-macosx-lion/OTP-9547: Fix build problems on MacOS 10.7 (Lion)
2011-09-20Fix build problems on MacOS 10.7 (Lion)Björn Gustavsson
On MacOS 10.7 (Lion) with Xcode 4.1 installed, the default C compiler is llvm-gcc-4.2. That compiler compiles beam_emu.c incorrectly, resulting in an emulator that will not start. The problem can be worked around by turning off all optimizations, but that will significantly degrade the performance of the run-time system. The problem can also be worked around manually like this: CC=gcc-4.2 ./configure To allow a working system to be built "out of the box", have the configure script set up the emulator Makefile so that gcc-4.2 will be used to compile beam_emu.c if the default compiler is llvm-based. All other C files will still be compiled with the default compiler.
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