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* sverker/process_info-reductions-fix/OTP-15793:
erts: Force process_info(reductions) as signal
erts: Fix another bug in process_info(reductions)
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Not 100% sure this is needed to get correct reductions
as the direct query is not done if process is RUNNING anyway.
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to disregard consumed virtual reductions
which are not aggregated into p->reds
and if included may cause reduction count go backwards.
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* sverker/process_info-reductions-fix/OTP-15709:
erts: Fix bug in process_info(reductions)
erts: Use ptr_val for pointer in gc msg copy
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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
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Cherry-pick: 3d7d66b84b69f3eb42e8bcd8dc510b6676e31cac
Without this fix asserts would trigger in debug build
but nothing else would break.
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We walk through all signal queues in the system when clearing
seq_trace, so we must be prepared to encounter all kinds of
signals.
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maint-21
* max-au/erts/dirty_scheduler_shutdown/PR-2172/OTP-15690:
erts: release dirty runqueue lock before entering endless loop when BEAM is shutting down
# Conflicts:
# erts/emulator/beam/erl_process.c
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shutting down
This patch fixes a problem happening when BEAM is shutting down. It is possible for a dirty scheduler to take the lock, and keep it, when the system is shutting down. It may also happen that a normal scheduler decides to schedule some dirty job (example is major garbage collection that results in migrating the process into dirty CPU queue), and hangs trying to take the lock that will never be released.
To fix the problem, either release the lock before entering endless wait loop, or reverse the order in which schedulers are stopped. Either fix works, and, of course, it works even better to apply both.
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If a suspend/resume signal pair was sent to a process while it
was executing dirty the resume counter on the process got into
an inconsistent state. This in turn could cause the process
to enter a suspended state indefinitely.
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into sverker/maint/ets-no-mbuf-trapping/OTP-15660
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Many heap fragments do no longer make the GC slow.
Even worse, we are not guaranteed that a yield will provoke a GC
removing the fragments, which might lead to a one-yield-per-bucket
scenario if the heap fragment(s) still remains after each yield.
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* siri/logger/os-timestamp/OTP-15625:
Update preloaded
[logger] Change timestamp from erlang:system_time to os:system_time
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LIST_NEXT and LIST_PREV causes macro redefinitions from other include files.
beam/erl_ao_firstfit_alloc.c:103:9: warning: 'LIST_NEXT' macro redefined [-Wmacro-redefined]
^
/usr/include/sys/queue.h:507:9: note: previous definition is here
^
1 warning generated.
beam/erl_bestfit_alloc.c:125:9: warning: 'LIST_NEXT' macro redefined [-Wmacro-redefined]
^
/usr/include/sys/queue.h:507:9: note: previous definition is here
^
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This is to align the timestamps with external logs.
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maint
* sverker/erts/term_to_binary-reductions/ERL-774/OTP-15514:
erts: Consume reductions for strings in term_to_binary
erts: Reduce number of list traversals in term_to_binary
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Cost per string byte,
but we still don't yield mid-string.
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* sverker/enif_consume_timeslice-dirty-nop/OTP-15604:
erts: Make enif_consume_timeslice no-op on dirty sched
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* sverker/heart-nice-exit/OTP-15599:
erts: Avoid heart killing a nicely exiting emulator
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by patching list length when we reach end of list.
And remove unnecessary traversals in is_string and is_external_string
beyond the max length for STRING_EXT.
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bjorng/bjorn/erts/persistent_term-default/ERL-843/OTP-15576
Add persistent_term:get(Key, DefaultValue)
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Symptom:
Heart kills exiting emulator before is has flushed all ports
and with HEART_KILL_SIGNAL=SIGABRT it may also produce
unnecessary core dumps from doing init:reboot() for example.
Problem:
Heart port is closed together with all the others in handle_reap_ports()
which is detected by heart OS process.
Solution 1:
Leave the heart port alone in handle_reap_ports() and let it be closed
by OS when emulator exists. It doesn't need to be flushed anyway.
Solution 2:
When heart OS process gets EOF on connection let it wait max 5 seconds
for emulator process to self terminate before trying to kill it.
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Fix bug in binary:encode_unsigned causing a read of uninitialized memory
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into maint-20
* john/erts/spectre-configure-flag-otp_20/OTP-15430/ERIERL-237:
Allow disabling retpoline in interpreter loop
Add a ./configure flag for spectre mitigation
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Optional tuple calls
OTP-15580
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https://bugs.erlang.org/browse/ERL-843
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* sverker/enif_select-faulty-assert:
erts: Fix faulty debug assert in enif_select
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* sverker/map-from-ks-vs-bug/OTP-15567:
erts: Add test for bug in enif_make_maps_from_arrays
erts: Fix bug in erts_map_from_ks_and_vs
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This sleeping bug was introduced in OTP 19.1
but not possible not provoke until OTP 21.0
when enif_make_map_from_arrays was introduced.
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* sverker/fix-compile-warning:
erts: Fix compiler warning for IS_SSMALL
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Using magic refs for big timers caused too large a stress on
the off_heap GC implementation to be viable, so it was never
enable. The code is now broken because of other changes to
we might as well remove it.
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"shift count negative or too big, undefined behavior"
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The bug could be seen by running the test that is added by this commit
in a valgrind enabled emulator.
Co-authored-by: John Högberg <[email protected]>
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to increase the probablity of a nice badarg
from erlang:port_control.
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This reverts commit f2b332186a for beam_emu.c only, to enable
an upgrade path for existing beam code compiled under OTP 20 with
parameterized modules.
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* 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
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* lukas/erts/set_logger_process/OTP-15375:
erts: Fix type of system_logger variable
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* 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
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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.
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* rickard/dirty_scheduler_collapse/OTP-15509:
Fix bug causing dirty scheduler sleeper list inconsistency
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* rickard/dirty_scheduler_collapse/maint-21/OTP-15509:
Fix bug causing dirty scheduler sleeper list inconsistency
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* rickard/dirty_scheduler_collapse/maint-21/OTP-15509:
Fix bug causing dirty scheduler sleeper list inconsistency
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