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2019-03-28erts: Fix bug in process_info(reductions)Sverker Eriksson
returning incorrect result as * current process might not be RUNNING in which case REDS_IN is actually used as def_arg_reg[5] * FCALLS might not have been swapped out * the SAVED_CALLS case was wrong and returned number of reds left
2019-03-28erts: Use ptr_val for pointer in gc msg copySverker Eriksson
Cherry-pick: 3d7d66b84b69f3eb42e8bcd8dc510b6676e31cac Without this fix asserts would trigger in debug build but nothing else would break.
2019-02-15Prepare releaseErlang/OTP
2019-02-11Check empty_out_q at close also for lingerRaimo Niskanen
2019-01-24Prepare releaseErlang/OTP
2019-01-24Merge branch 'lukas/erts/scheduler-pollset-fixes/OTP-15538' into maint-21Erlang/OTP
* lukas/erts/scheduler-pollset-fixes/OTP-15538: erts: Fix getting of poll events on linux >= 4.15.0 erts: Use reduction based polling for starved poll-set erts: Fix pollset test cases
2019-01-24Merge branch 'lukas/erts/fix_spawn_driver_early_close/OTP-15537' into maint-21Erlang/OTP
* lukas/erts/fix_spawn_driver_early_close/OTP-15537: erts: Fix too early close of spawn driver fd
2019-01-24Merge branch 'lukas/erts/fix_inet_multitimer_cleanup/OTP-15536' into maint-21Erlang/OTP
* lukas/erts/fix_inet_multitimer_cleanup/OTP-15536: erts: Fix cleanup of the inet MultiTimer
2019-01-22erts: Fix cleanup of the inet MultiTimerLukas Larsson
2019-01-21erts: Fix getting of poll events on linux >= 4.15.0Lukas Larsson
2019-01-18erts: Use reduction based polling for starved poll-setLukas Larsson
When the schedulers never go to sleep (and thus never polls) it may be that the fds in schedulers poll-sets are never polled. Before this commit, this was solved by starting a timer when an overload was detected. This had issues as overloads were not always detected in time. So this commit reverts to the pre OTP-21 behaviour so keep a global counter makes that the poll is called when it should.
2019-01-18erts: Fix too early close of spawn driver fdLukas Larsson
2019-01-15Prepare releaseErlang/OTP
2019-01-15Merge branch 'rickard/dirty_scheduler_collapse/maint-21/OTP-15509' into maint-21Erlang/OTP
* rickard/dirty_scheduler_collapse/maint-21/OTP-15509: Fix bug causing dirty scheduler sleeper list inconsistency
2019-01-11Merge branch 'rickard/dirty_scheduler_collapse/OTP-15509' into ↵Rickard Green
rickard/dirty_scheduler_collapse/maint-21/OTP-15509 * rickard/dirty_scheduler_collapse/OTP-15509: Fix bug causing dirty scheduler sleeper list inconsistency
2019-01-11Fix bug causing dirty scheduler sleeper list inconsistencyRickard Green
2019-01-08Remove an unused variableJohn Högberg
2019-01-07erts: Fix pollset test casesLukas Larsson
2019-01-07Spawn prim_file helper as a system processJohn Högberg
2018-12-20Prepare releaseErlang/OTP
2018-12-20Merge branch 'sverker/big-band-bug/ERL-804/OTP-15487' into maint-21Erlang/OTP
* sverker/big-band-bug/ERL-804/OTP-15487: erts: Fix bug in 'band' of two negative numbers, one big
2018-12-20Merge branch 'sverker/fix-atomics-get-large-unsigned/PR-2061/OTP-15486' into ↵Erlang/OTP
maint-21 * sverker/fix-atomics-get-large-unsigned/PR-2061/OTP-15486: erts: Fix possible heap corruption getting atomics
2018-12-17erts: Fix bug in 'band' of two negative numbers, one bigSverker Eriksson
Similar bug as for bxor fixed by abc4fd372d476821448dfb9 Ex: 1> io:format("~.16B\n", [-16#1110000000000000000 band (-1)]). -1120000000000000000 Wrong result for (-X bsl WS) band -Y. where X is any positive integer WS is erlang:system_info(wordsize)*8*N where N is 1 or larger Y is any positive integer smaller than (1 bsl WS) Fix: The subtraction of 1 (for 2-complement conversion) must be carried along all the way to the last words.
2018-12-13erts: Fix possible heap corruption getting atomicsTomas Abrahamsson
Due to comparison as a signed integer, when getting an unsigned atomic in the range 2^63-1..2^64-1 (when the most significant bit was set), the heap could get corrupted when the integer was retrieved: hsz would get set to zero, but the code proceeded to build a bignum. Steps to reproduce (at least on x86_64): $ erl 1> A = atomics:new(1,[{signed,false}]). 2> atomics:put(A,1,18446744073709551615). 3> atomics:get(A,1). At the last step, the shell would print some garbage and hang.
2018-12-13erts: Fix warning and potential big-endian-bug in prim_fileSverker Eriksson
for set_permission and set_owner.
2018-12-10Prepare releaseErlang/OTP
2018-12-06Merge branch 'lukas/OTP-21.1.1/scheduler_pollset/OTP-15475' into maintLukas Larsson
* lukas/OTP-21.1.1/scheduler_pollset/OTP-15475: erts: Move fds with active true behaviour to own pollset erts: Fix lists_member_2 reduction count erts: Allow code_model_small to be set in xcomp setting erts: Implement delay_send using timer instead of poll erts: Optimize driver_set_timer(0) to fire at once erts: Optimize the inet driver multi timers for one timer erts: Move all inet tcp CONNECTED timers to multi timer erts: Add erts_io_notify_port_task_executed to check_io msacc state erts: Add pre-alloc to ALLOC msacc state erts: Make thr prgr wakeup current or sched 1 erts: Pass thread progress data where possible
2018-12-06erts: Move fds with active true behaviour to own pollsetLukas Larsson
At start of the VM a poll-set that the schedulers will check is created where fds that have triggered many (at the moment, many means 10) times without being deselected inbetween. In this scheduler specific poll-set fds do not use ONESHOT, which means that the number of syscalls goes down dramatically for such fds. This pollset is introduced in order to handle fds that are used by the erlang distribution and that never change their state from {active, true}. This pollset only handles ready_input events, ready_output is still handled by the poll threads. During overload, polling the scheduler poll-set is done on a 10ms timer.
2018-12-05Merge pull request #2039 from ↵Lukas Larsson
garazdawi/lukas/erts/fix_lit_msg_copy_in_gc/ERL-741/OTP-15478 erts: Fix copy of literal msg during gc
2018-12-04erts: Fix copy of literal msg during gcLukas Larsson
A copy has to be made of the message as there is a trace token. There was a bug where the actual message was incorrectly modified even if it was a literal.
2018-12-03Update preloaded modulesHenrik Nord
2018-12-03Merge branch 'lukas/erts/CFLAGS-O-check/OTP-15465' into maintLukas Larsson
* lukas/erts/CFLAGS-O-check/OTP-15465: erts: Fix some 32-bit gcc warnings erts: Add check that a -O flag is present in CFLAGS
2018-12-03erts: Fix some 32-bit gcc warningsLukas Larsson
2018-12-03erts: Add check that a -O flag is present in CFLAGSLukas Larsson
There have been too many times when users have needed to enable something through CFLAGS but forgotten to add the '-O2 -g' flags.
2018-12-03erts: Fix lists_member_2 reduction countLukas Larsson
OTP-15474
2018-12-03erts: Allow code_model_small to be set in xcomp settingLukas Larsson
OTP-15473
2018-12-03erts: Implement delay_send using timer instead of pollLukas Larsson
The previous implementation uses a round-trip in the poll-set to simulate a yield of the port context. With the poll thread implementation this is no longer a good idea as it generated a lot more work for the system. So this commit changes the implementation to use a timer instead. OTP-15471
2018-12-03erts: Optimize driver_set_timer(0) to fire at onceLukas Larsson
By optimizing driver_set_timer for 0 we can use it instead of select to do a yield in the driver. Use full for delay_send in the inet driver. OTP-15472
2018-12-03erts: Optimize the inet driver multi timers for one timerLukas Larsson
The most common case for any socket is to have zero or one timer, so we optimize for the one case. The only case when we have more than one timer is when the multi accept feature is used.
2018-12-03erts: Move all inet tcp CONNECTED timers to multi timerLukas Larsson
2018-12-03erts: Add erts_io_notify_port_task_executed to check_io msacc stateLukas Larsson
OTP-15450
2018-12-03erts: Add pre-alloc to ALLOC msacc stateLukas Larsson
OTP-15450
2018-12-03Merge branch 'sverker/erts/sendfile-error-bug/ERL-784/OTP-15461' into maintSverker Eriksson
* sverker/erts/sendfile-error-bug/ERL-784/OTP-15461: erts: Fix hanging sendfile bugs when socket closes unexpectedly erts: Fix unexpected inet_reply message from failing file:sendfile erts: Fix bug in sendfile for active socket
2018-12-03Merge branch 'sverker/erts/cuddle-driver_SUITE' into maintSverker Eriksson
* sverker/erts/cuddle-driver_SUITE: erts: Fix faulty assert in driver_SUITE erts: Improve driver_SUITE:smp_select
2018-11-30erts: Fix hanging sendfile bugs when socket closes unexpectedlySverker Eriksson
2018-11-29Replace mathematical jargon in erl_nif docs PR-2037Bartosz Błaszków
2018-11-28erts: Fix unexpected inet_reply message from failing file:sendfileSverker Eriksson
A failing file:sendfile call would often send a message {inet_reply, Port, {error, Reason}} that would pollute the mailbox of the calling process. TCP_REQ_SENDFILE has its own reply messages format {sendfile, _, _} and does not expect an inet_reply message. Solution: Suppress inet_reply error message if TCP_ADDF_SENDFILE is set.
2018-11-28erts: Fix bug in sendfile for active socketSverker Eriksson
driver_select() was called after port had been killed by tcp_inet_sendfile() calling tcp_send_error().
2018-11-27Merge branch 'lukas/erts/fix-msacc-gc-states/OTP-15450' into maintLukas Larsson
* lukas/erts/fix-msacc-gc-states/OTP-15450: erts: Fix msacc GC states on dirty scheds
2018-11-27Merge pull request #2024 from max-au/fix_aux_work_on_dcpu_schedJohn Högberg
erts: fix attempt to start timer when executing on dirty scheduler OTP-15446