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2016-09-05Merge branch 'lukas/erts/fix_signalhandler_errno_restore/OTP-13868' into maintLukas Larsson
* lukas/erts/fix_signalhandler_errno_restore/OTP-13868: erts: Fix child setup signal hander bug
2016-09-02erts: Fix child setup signal hander bugLukas Larsson
When running the signal handler, the errno has to be restored to its original value, otherwise code running in the same thread may misbehave.
2016-08-31Merge branch 'rickard/premature-timeout/OTP-13698' into maintRickard Green
* rickard/premature-timeout/OTP-13698: Improve accuracy of timeouts using premature timeouts
2016-07-14erts: Fix some msacc inline directivesLukas Larsson
2016-07-11Merge branch 'lukas/erts/spawn_driver_relative_cd/ERL-175/OTP-13733' into maintLukas Larsson
* lukas/erts/spawn_driver_relative_cd/ERL-175/OTP-13733: erts: Add port_SUITE:cd invalid dir testcase erts: Fix spawn driver with relative cd option erts: Fix HARD_DEBUG printouts in erl_child_setup erts: Improve error printouts in erl_child_setup Conflicts: erts/emulator/test/port_SUITE.erl
2016-07-07Merge branch 'sverker/child-setup-debugging' into maintSverker Eriksson
2016-07-01erts: Fix spawn driver with relative cd optionLukas Larsson
2016-07-01erts: Fix HARD_DEBUG printouts in erl_child_setupLukas Larsson
2016-07-01erts: Improve error printouts in erl_child_setupLukas Larsson
Add prints to stderr with a small description of the error so that errors will be easier to debug. Also if a protocol error is detected, erl_child_setup will abort instead of exit.
2016-06-28erts: Save abort reason for erl_child_setupSverker Eriksson
Nice to have for core dump inspection when stderr -> /dev/null.
2016-06-22Improve accuracy of timeouts using premature timeoutsRickard Green
Improve accuracy of timeouts using a premature timeout then return to sleep with a shorter timeout just before requested timeout. This approach is only used on certain platforms where we know it improves the accuracy of the timeouts, e.g. MacOS X.
2016-06-21erts: Add test port_SUITE:pipe_limit_envSverker Eriksson
for 9f779819f6bda734c595.
2016-06-20erts: Optimize spawn driver for large(r) environmentsSverker Eriksson
that need to be enqueued.
2016-06-20erts: Fix spawn driver when env size is above pipe capacitySverker Eriksson
Symptom: open_port() succeeds, port program never starts but instead seem to terminate with exit_status 150 (EINVAL+128). When: If the command payload buffer (including the entire environment) for the port program is between 1 to 4 bytes above the pipe capacity, which is 65536 bytes on newer Linux, but can be as low as 4096 on older 32-bit Linux. Since: OTP-19.0-rc1.
2016-06-16Merge branch 'rickard/mach-clock-fix/OTP-13686'Rickard Green
* rickard/mach-clock-fix/OTP-13686: Fix mach clock usage on Sierra
2016-06-15Merge branch 'jj1bdx-19.0-rc2-hipemmap/PR-1094'Sverker Eriksson
2016-06-15Fix mach clock usage on SierraRickard Green
2016-06-10erts: Fix undefined shift to msb in monotonic timeBjörn-Egil Dahlberg
2016-06-10Disregard MAP_NORESERVE for FreeBSDKenji Rikitake
A fix for running 19.0-rc2 on FreeBSD with HiPE enabled. * erl_mmap.h: disregard MAP_NORESERVE for FreeBSD MAP_NORESERVE is undefined in FreeBSD 10.x and later. This is to enable 64bit HiPE experimentally on FreeBSD. Note that on FreeBSD MAP_NORESERVE was "never implemented" even before 11.x (and the flag does not exist in /usr/src/sys/vm/mmap.c of 10.3-STABLE r301478 either), and HiPE was working on OTP 18.3.3, so mandating MAP_NORESERVE on FreeBSD might not be needed. See the following message on how MAP_NORESERVE was treated on FreeBSD: <http://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-20150202/122958.html> * erl_mmap.c: disable MAP_NORESERVE for FreeBSD * See also <https://github.com/erlang/otp/pull/925/commits/b02ce940c8738785ad018c9f758ca0d05d256bbb>
2016-05-31erts: Fix possible race in poller wakeup on windowsSverker Eriksson
Similar bug that was fixed for unix in 7bbb207b30360c60fb99653.
2016-05-09Merge branch 'sverker/system_info-erts_mmap/OTP-13560'Sverker Eriksson
2016-05-04erts: Add macro HAVE_ERTS_MMAPSverker Eriksson
and make erts_mmap unavailable at compile time if not supported.
2016-05-04erts: Refactor erl_mmap.hSverker Eriksson
by (only) moving around stuff in the file. in order to make it easier to ifdef away all erts_mmap_* if not supported.
2016-04-29erts: Fix system_info({allocator_sizes, mseg_alloc})Sverker Eriksson
will now return [{instance,0,[{segments_size,9961472,9961472,11010048}]}, {instance,1,[{segments_size,6291456,6291456,6815744}]}, {instance,2,[{segments_size,524288,524288,786432}]}, {instance,3,[{segments_size,1048576,1048576,1835008}]}, {instance,4,[{segments_size,0,0,262144}]}] and not just empty lists.
2016-04-29erts: Move option info for erts_mmapSverker Eriksson
from {allocator,mseg_alloc} to {allocator,erts_mmap}
2016-04-29Merge branch 'mikpe/fp-exceptions-cleanups/PR-1019/OTP-13531'Lukas Larsson
* mikpe/fp-exceptions-cleanups/PR-1019/OTP-13531: clean up FP exception code in sys_float.c
2016-04-26matherr() must not fake an FP exceptionMikael Pettersson
When FP exceptions are used, matherr() forces a fake FP exception, which is interpreted as an error by the checking code after a math routine call. This is wrong for several reasons: - it's not necessary for error checking: when FP exceptions aren't used, matherr() is a stub and no information is derived from it being called - it's not necessary for FPU maintenance: the FPU only needs to be reprogrammed after an actual FP exception - it causes false negatives: matherr() may be called even though Erlang doesn't consider the case to be an error (exp() and pow() underflows on Solaris for instance); with FP exceptions enabled they are incorrectly considered errors The fix is to remove all FP exception related code from matherr().
2016-04-20Merge branch 'sverker/hipe-code-alloc'Sverker Eriksson
2016-04-17clean up FP exception code in sys_float.cMikael Pettersson
This performs a number of cleanups in the FP exception code: - inline the body of unmask_fpe_conditional() in its only caller, then delete the duplicated and identical definitions of it - start the big processor-specific block with a comment describing the two functions that must be defined, then delete redundant comments at all the mask_*() functions - add a comment before fpe_sig_action() explaining exactly what processor-specific action is required of it - flatten #ifdef nesting in fpe_sig_action() - move common code in the x86 unmask_fpe() and erts_restore_fpu() function into a subroutine - minor tweaks: drop a redundant L suffix on a 0, add a comment after an #else, bump the size of a debug buffer, There should be no change in behaviour from these changes.
2016-04-15erts: Add 'exec_alloc' for hipe codeSverker Eriksson
that uses its own super carrier (erts_exec_mmapper) to guarantee low addressed and executable memory (PROT_EXEC). Currently only used on x86_64 that needs low memory for HiPE/AMD64's small code model. By initializing erts_exec_mapper early we secure its low memory area before erts_literal_mmapper might steal it.
2016-04-15erts: Make ErtsMemMapper able to map memory with PROT_EXECSverker Eriksson
to prepare for hipe native code allocation.
2016-04-15erts: Refactor callbacks for literal mseg allocSverker Eriksson
Make the callbacks more general to be usable for any allocator that that uses its own ErtsMemMapper.
2016-04-15erts: Tweak defaults for literal allocatorSverker Eriksson
Reduce main carrier size and number of free descriptors.
2016-04-13Merge branch 'henrik/update-copyrightyear'Henrik Nord
* henrik/update-copyrightyear: update copyright-year
2016-04-06Merge branch 'egil/erts/tracing-beam-lttng/OTP-10282'Björn-Egil Dahlberg
* egil/erts/tracing-beam-lttng/OTP-10282: erts: Don't use ratio in carrier lttng tracepoints Add lttng testcases erts: Extend erlang:system_info/1 with lttng Refactor and fix dtrace define in erl_message erts: Add lttng tracepoints for async pool queue erts: Add lttng tracepoints for drivers erts: Add lttng tracepoints for scheduler events erts: Add lttng tracepoints for memory carriers erts: Update lttng-wrapper with mfa conversion erts: Teach lttng to configure and build system
2016-04-06erts: Add lttng tracepoints for driversBjörn-Egil Dahlberg
* driver_event * driver_flush * driver_finish * driver_init * driver_output * driver_outputv * driver_process_exit * driver_ready_async * driver_ready_input * driver_ready_output * driver_start * driver_stop * driver_stop_select * driver_timeout
2016-03-29Merge branch 'lukas/erts/inline_tagvaldef/OTP-13440'Lukas Larsson
* lukas/erts/inline_tagvaldef/OTP-13440: erts: inline tag_val_def
2016-03-29erts: inline tag_val_defLukas Larsson
The tag_val_def function was called and multiple switch statements had to be traversed in term.c, and then a big switch in the calling code to branch on the term types. By inlining the switches are merged by the compiler and a lot fewer branches have to be taken. Benchmarks show that this increases performance of enc_term by as much as 10%.
2016-03-18Merge branch 'lukas/erts/fix_scheduler_suspend/ERL-94/PR-978/OTP-13425'Lukas Larsson
* lukas/erts/fix_scheduler_suspend/ERL-94/PR-978/OTP-13425: erts: Fix install of suspend handler Conflicts: erts/emulator/sys/unix/erl_unix_sys.h erts/emulator/sys/unix/sys.c
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.
2016-03-15update copyright-yearHenrik Nord
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
2016-03-01Merge 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
2016-02-24Merge 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).
2016-02-23erts: 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?
2016-02-23erts: Fix install of suspend handlerLukas Larsson
This commit makes sure to setup the suspend handler to matter what +B option is given at the command line.
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