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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
2016-02-29Fix build wihtout thread supportRickard Green
2016-02-24Merge branch 'master' into sverk/master/halt-INT_MINSverker Eriksson
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).
2016-02-02erts: Add power saving cpu feature tests and use themLukas Larsson
2016-02-02erts: Refactor perf counter internal interfaceLukas Larsson
perf counter is now part of the function pointer interface and also the function returns the value instead of writing to a memory buffer.
2016-02-02erts: use correct function for perf counter on non-x86Lukas Larsson
2016-02-02erts, kernel: Add os:perf_counter functionLukas Larsson
The perf_counter is a very very cheap and high resolution timer that can be used to timestamp system events. It does not have monoticity guarantees, but should on most OS's expose a monotonous time. A special instruction has been created for this counter to further speed up fetching it. OTP-12908
2015-12-15erts: Never abort in the forked childLukas Larsson
We always want the error to propagate up to the application when a child cannot be created.
2015-12-15erts: Mend ASSERT makro for erl_child_setupSverker Eriksson
when called by hash.c for example. We use ASSERT from sys.h but erl_child_setup implements its own erl_assert_error() as it doesn't link with sys.o.
2015-12-15erts: Only use forker StackAck on freebsdLukas Larsson
2015-12-15erts: Add forker StartAck for port start flowcontrolLukas Larsson
An acknowledgement of the Start command has to be managed as we have to make sure that packages are not dropped and also that the close calls do not happen too early.
2015-12-15erts: Move os_pid to port hash to child setupLukas Larsson
Had to move the hashing because of a race that can otherwise happen where a new os_pid value was inserted into the hash before the previous value had been removed. Also replaced the protocol inbetween erts and child setup to be a binary protocol. This was done in order to deal with the varying size of Eterm.
2015-12-15erts: Handle all EINTR and EAGAIN cases in child setupLukas Larsson
2015-12-15erts: Make child_setup work with large environmentsLukas Larsson
2015-12-15erts: Fix uds socket handling for os xLukas Larsson
OS X is very strict in what it requires of you and also gives strange error codes for some errors. In this commit we remap EMSGSIZE to EMFILE and also precisely tune the amount of data we send on the socket so that we can recv only that data. If we try to recv more, recvmsg fails with EPIPE if the remote end has been closed.
2015-12-15erts: Fix dereferencing of unaligned integer for sparcLukas Larsson
2015-12-15erts: Flatten too long io vectors in uds writeLukas Larsson
2015-12-15erts: Create forker process for spawn driverLukas Larsson
Instead of forking from the beam process, we create a separate process in which all forks are done. This has several advantages: 1) performance: * don't have to close all fd's in the world * fork only has to copy stuff from a small process * work is done in a completely seperate process * a 3x performance increase has been measured, can be made even greater (10x) if we cache the environment in child setup 2) stability * the exec is done in another process than beam, which means that if the file that we exec to is on an nfs that is not available right now we will not block a scheduler until the nfs returns. 3) simplicity * don't have to deal with SIGCHLD in the erts Unfortunately, this solution also implies some badness. 1) There will always be a seperate process running together with beam on unix. This could be confusing and undesirable. 2) We have to transfer the entire environment to child_setup for each command. OTP-13088
2015-12-15erts: Move sys drivers to another fileLukas Larsson
2015-12-15erts: Change name of child_setup to erl_child_setupLukas Larsson
2015-12-15erts: Rename sys driver structsLukas Larsson
2015-08-18Handle ERRNO_BLOCK in fd_driver async functionsSteve Vinoski
Several users on erlang-questions have reported problems with recent releases where output to standard_error causes standard_error_sup to die from receiving an unexpected eagain error. In the fd_driver, change the fd_async() function to handle EINTR, and change fd_ready_async() to handle ERRNO_BLOCK. Add a new test to standard_error_SUITE to generate output to standard_error and ensure that standard_error_sup does not die. Thanks to Kota Uenishi for contributing the test case.
2015-06-18Change license text to APLv2Bruce Yinhe
2015-06-17erts: Add brackets to statementBjörn-Egil Dahlberg
2015-05-20Merge branch 'mikpe/erl_child_setup-android-breakage'Henrik Nord
* mikpe/erl_child_setup-android-breakage: erl_child_setup.c: fix Android breakage OTP-12751
2015-05-08Merge branch 'sverk/erts-fp-exception-fixes/OTP-12717'Sverker Eriksson
* sverk/erts-fp-exception-fixes/OTP-12717: erts: Disable float exceptions for clang/llvm erts: Increase buffer in erts_fp_check_init_error
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 - ...
2015-05-06erts: Increase buffer in erts_fp_check_init_errorMikael Pettersson
The current size is too small for 64-bit machines, causing messages to be truncated and making debugging more difficult.
2015-04-28erl_child_setup.c: fix Android breakageMikael Pettersson
The Android support in erl_child_setup.c is broken: 1. The close fd loop compares an fd (integer i) with the address of the function __system_properties_fd rather than the value of calling that function. 2. This function is locally defined, but its name starts with two underscores which is reserved for the implementation. 3. This function is not used outside of this file, so should be static. 4. This function performs a fair amount of work (calls getenv and atoi), which would be repeated for each and every fd in the [from,to] range. 5. This function contains an unsed local variable 's'. Fixed by dropping the __ prefix, making the function static, dropping the unused local variable, and rewriting the close fd loop to call the function at most once.
2015-04-22Merge branch 'sverk/pr632/prevent-illegal-nif-terms/OTP-12655'Sverker Eriksson
* sverk/pr632/prevent-illegal-nif-terms/OTP-12655: erts: Reject non-finite float terms in erl_drv_output_term erts: Remove old docs about experimental NIF versions. erts: Add enif_has_pending_exception erts: Clearify erl_nif documentation about badarg exception erts: Fix compile warning in enif_make_double erts: Fix divide by zero compile error in nif_SUITE.c erts: Fix isfinite for windows Ensure NIF term creation disallows illegal values
2015-04-15erts: Fix isfinite for windowsSverker Eriksson
Add macro erts_isfinite as an OS independent way to check if a float is finite.
2015-03-26Merge branch 'rickard/time_api/OTP-11997'Rickard Green
* rickard/time_api/OTP-11997: Misc fixes Conflicts: erts/preloaded/ebin/erlang.beam erts/preloaded/ebin/erts_internal.beam
2015-03-26Misc fixesRickard Green
2015-03-25Merge branch 'rickard/time_api/OTP-11997'Rickard Green
* rickard/time_api/OTP-11997: Fix erts_sys_hrtime() fallback
2015-03-25Fix erts_sys_hrtime() fallbackRickard Green
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
2015-03-23erts_sys_hrtime() for lcntRickard Green
2015-03-23Better support for poor os monotonic sourcesRickard Green
2015-03-21Merge branch 'rickard/time_api/OTP-11997'Rickard Green
* rickard/time_api/OTP-11997: Unbreak lcnt
2015-03-21Unbreak lcntRickard Green
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
2015-03-20Introduce 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.
2015-02-04fix faulty mergeHenrik Nord
2015-02-03Merge branch 'maint'Zandra Hird
Conflicts: OTP_VERSION erts/emulator/sys/unix/sys.c erts/vsn.mk
2015-01-30Merge branch 'egil/fix-child_setup-close/OTP-12446' into maint-17Erlang/OTP
* egil/fix-child_setup-close/OTP-12446: erts: Use closefrom() if available when closing fds erts: Don't close all fds twice in child_setup