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Without off_heap message queue the GC of the tracer could take
very long and thus delay the code:purge which would in turn allow
the trace generator to generate a lot of more messages which would
make the tracer GC for even longer etc etc. The time taken for the
testcase could go up to as large as 10 seconds and use lots of memory.
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OTP-13501
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OTP-13500
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OTP-13502
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Any heap fragment created during a nif call to a tracer nif
should be free'd immediately in order for the GC not to treat
it as live data.
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OTP-13499
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OTP-13497
This trace event is triggered when a process is created from the
process that is created.
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Rickards said that this was ok
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We have the main lock on rp->p, so why not?
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provoked by nif_SUITE:nif_binary_to_term.
If we fail to decode an immediate (unsafe atom for example) with
a dummy factory then hp and factory->hp will both be uninitialized
and valgrind will complain about comparing them.
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OTP-13500
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OTP-13500
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Tracing to port in non-smp now creates port tasks
instead of calling directly to the port to fake
schedule events don't exist any more.
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erts_block/unblock_fpe should only be called at entry to/exit from
native user code.
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This commit completes the tracing for processes so that
all messages sent by a process (via nifs or otherwise) will
be traced.
The commit also adds tracing of all types of events from ports.
When enabling tracing using erlang:trace, the 'all' flag now also
enables tracing on all ports.
OTP-13496
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Add the possibility to use modules as trace data receivers. The functions
in the module have to be nifs as otherwise complex trace probes will be
very hard to handle (complex means trace probes for ports for example).
This commit changes the way that the ptab->tracer field works from always
being an immediate, to now be NIL if no tracer is present or else be
the tuple {TracerModule, TracerState} where TracerModule is an atom that
is later used to lookup the appropriate tracer callbacks to call and
TracerState is just passed to the tracer callback. The default process and
port tracers have been rewritten to use the new API.
This commit also changes the order which trace messages are delivered to the
potential tracer process. Any enif_send done in a tracer module may be delayed
indefinitely because of lock order issues. If a message is delayed any other
trace message send from that process is also delayed so that order is preserved
for each traced entity. This means that for some trace events (i.e. send/receive)
the events may come in an unintuitive order (receive before send) to the
trace receiver. Timestamps are taken when the trace message is generated so
trace messages from differented processes may arrive with the timestamp
out of order.
Both the erlang:trace and seq_trace:set_system_tracer accept the new tracer
module tracers and also the backwards compatible arguments.
OTP-10267
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These are convinience functions for calling nifs from erts
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* lukas/erts/enif_send_null_env/OTP-13495:
erts: Add enif_send with NULL as msg env
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* egil/erts/fix-erlang-system_profile/ERL-126/OTP-13494:
erts: Enhance system_profile tests
erts: Don't use function location when process is terminating
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* paulgray/inet_db_fix/PR-949/OTP-13470:
Fix start timestamp instead of time check
Allow to refresh resolver settings on startup
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* binarin/erts/fix-epmd-systemd-notifications/PR-999/OTP-13493:
Don't send unasked for systemd notifications
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* egil/fix-dyntrace-test:
runtime_tools: Skip dyntrace test if LTTng is enabled
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* egil/erts/opt-list_append/OTP-13487:
erts: Optimize '++' operator
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* egil/tools/modernize-tests:
tools: Don't divide by zero in tests
Fix instruments_SUITE sumblock check
Eliminate use of doc and suite clauses
Replace ?t with test_server
Use test_server:is_debug/0 instead of custom check
Replace use of test_server:format/2 with io:format/2
Eliminate use of ?config() macro
Eliminate use of test_server:fail/0,1
Eliminate erlang:now/0
Modernize use of timetraps
Remove ?line macros
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It's not just ok to throw badarg, it MUST throw badarg.
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* siri/otp-19-vsns:
Update version of common_test for OTP-19
Update versions
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* siri/ct/mods-in-app-file/OTP-13475:
Don't add explicit path to ct_release_test
Add missing modules to common_test.app.src
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* henrik/update-copyrightyear:
update copyright-year
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* msantos/erts/cli-abort-on-alloc-fail/PR-948/OTP-13486:
erts/common: check for OOM on Windows
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* egil/erts-lib/modernize-tests:
Replace test_server:os_type/0 with os:type/0
Eliminate use of doc and suite clauses
Replace use of test_server:format/2 with io:format/2
Eliminate use of test_server:fail/0,1
Eliminate use of ?config() macro
Modernize use of timetraps
Remove ?line macros
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* bjorn/raise:
Remove unreachable code after 'raise' instructions
Simplify the raise instruction to reduce code size
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This also optimizes the BIF lists:append/2
Use one pass to check for properness and copying LHS list.
If LHS turns out not being a proper list, bail and reset htop.
If we run out of heap, allocate a heap-fragment and calculate
the remaining length as normal, thus checking for properness,
and then continue copying.
Measurements shows this being ~50% faster.
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* egil/erts/fix-process_info-spec/ERL-123/OTP-13485:
Update preloaded erlang.beam
erts: Fix process_info/2 result spec
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* egil/erts/cuddle-tests:
Additional logging for alloc_SUITE
Replace test_server:os_type/0 with os:type/0
Let low_prio test run a bit longer
Increase timetrap for atom_roundtrip_r15b
Remove unnecessary ct boilerplate in suite
Don't divide by zero in test logging
Use ct:fail/1 instead of test_server:fail/1
Relax node_container_SUITE
Increase timetrap timeout for op_SUITE:bsl_bsr/1
Increase timetrap timeout for port_SUITE:huge_env/1
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