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* john/erts/fix-literal-map-elements/OTP-15184:
Fix a rare crash when matching on literal maps
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Optimise creation of anonymous functions
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Implementing it in Erlang allows taking advantage of the literal pool
optimisation, this means the function implemented in Erlang does no
allocations, while the BIF had to allocate new map each time it was
called. Benchmarks show the function is also slightly faster now.
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This introduces a similar optimisation for normal funs
to what was introduced for external funs in #1725.
It is possible to allocate the fun as a literal, if it does not capture
the environment (i.e. it does not close over any variables).
Unfortunately it's not possible to do this in the compiler due to
problems with representation of such functions in the `.beam` files.
Fortunately, we can do this in the loader.
Simple evaluation shows that functions that don't capture the
enviornment consistute over 60% of all funs in the source code of
Erlang/OTP itself.
The only downside is that we lose a meningful value in the `pid` field
of the fun. The goal of this field, beyond debugging, was to be
able to identify the original node of a function. To be able to still do
this, the functions that are created in the loader are assigned the init
pid as the creator.
To solve issues with staryp, initially set the `erts_init_process_id`
to `ERTS_INVALID_PID` and skip the described optimisation if the value
is still uninitialised.
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* sverker/crash-dump-crash-literals/OTP-15181:
erts: Fix bug in crash dump generation
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Only SCPT should keep the recv buffer when going into
select. If UDP does it, it will result in many more
memory allocations than there should be which can be
very detrimental to performance.
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* lukas/clean_doc_xmldir/OTP-15190:
docs: make clean all XMLDIR
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This bug was introduced in 988f5f5e8061ce2. The aux_thread
needs to be poked as it is the thread that handles all
break actions.
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* maint:
Updated OTP version
Update release notes
Update version numbers
Fix trace_info/2
Provide build support for standalone corba repo
Fix release notes for OTP-21.0.2
Move to a dirty scheduler even when we have pending system tasks
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* maint-21:
Updated OTP version
Update release notes
Update version numbers
Fix trace_info/2
Provide build support for standalone corba repo
Fix release notes for OTP-21.0.2
Move to a dirty scheduler even when we have pending system tasks
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When matching on a literal map, the map is placed into the general
scratch register first. This is fine in isolation, but when the
key to be matched was in a Y register it would also be placed in
the scratch register, overwriting the map and crashing the
emulator.
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* john/erts/fix-dirty-reschedule-bug/OTP-15154:
Move to a dirty scheduler even when we have pending system tasks
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* john/erts/fix-21.0.2-release-notes:
Fix release notes for OTP-21.0.2
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* rickard/trace-info-bug/OTP-15183:
Fix trace_info/2
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* rickard/corba-build/OTP-15176:
Provide build support for standalone corba repo
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* john/erts/adjust-fix-alloc-sizes:
Adjust fix_alloc sizes to guarantee they fit a dd block
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Symptom: emulator core dumps during crash dump generation.
Problem:
erts_dump_lit_areas did not grow correctly
to always be equal or larger than number of loaded modules.
The comment about twice the size to include both curr and old
did not seem right. The beam_ranges structure contains *all* loaded
module instances until they are removed when purged.
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* sverker/erts/monitored_by-docs/ERL-648/OTP-15180:
os_mon: Fix volatile test cpu_sup_SUITE:util_api
erts: Fix spec and docs for process_info 'monitored_by'
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* sverker/erts/cpool-simplify:
erts: Simplify calc of allctr->cpool.abandon_limit
erts: Simplify cpool_fetch
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benign until valgrind version 4.* shows up.
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Two of them only affect valgrind builds
and the one for ERL_CRASH_DUMP_NICE seems benign.
Return value changed in c2d70945dce9cb09d5d7120d6e9ddf7faac8d230
old -> new
-1 -> 0 not found
0 -> 1 found ok
1 -> -1 found but too big
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to include ports and NIF resources.
Added new opaque type 'nif_resource'.
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This failed on 32-bit builds, and wasn't noticed because 32-bit
debug builds didn't run during the test period.
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* maint:
erts: Correct The Abstract Format
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* hasse/erts/correct_absform:
erts: Correct The Abstract Format
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* maint:
Call test_lib:recompile/1 from init_per_suite/1
beam_debug: Fix printing of floating point registers
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A minor correction regarding literal character types.
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* sverker/purge-vfork:
erts: Remove obsolete paragraph about ERL_NO_VFORK
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Remove check_limit_count
and just recalculate when needed,
that is when carriers are added/removed.
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and avoid faulty bumps of 'entrance_removed' stat.
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The release notes generated in the README and notes.xml were out of
sync, and notes.xml erroneously listed a fixed bug as open.
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* maint:
Updated OTP version
Update release notes
Update version numbers
Eliminate a crash in the beam_jump pass
stdlib: Fix a 'chars_limit' bug
Fix a race condition when generating async operation ids
Fix internal compiler error for map_get/2
beam_type: Fix unsafe optimization
public_key: Remove moduli 5121 and 7167 Thoose were added by 598629aeba9de98e8cdf5637043eb34e5d407751 but are not universaly supported.
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* maint-21:
Updated OTP version
Update release notes
Update version numbers
Eliminate a crash in the beam_jump pass
stdlib: Fix a 'chars_limit' bug
Fix a race condition when generating async operation ids
Fix internal compiler error for map_get/2
beam_type: Fix unsafe optimization
public_key: Remove moduli 5121 and 7167 Thoose were added by 598629aeba9de98e8cdf5637043eb34e5d407751 but are not universaly supported.
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This is a hack to make the "noshell" option work; kqueue can poll
these fds but will not report EV_EOF. This may be common to all
all pipes but we have no way to tell whether an fd is a pipe or
not.
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jhogberg/john/erts/cross-type-carrier-migration/OTP-15063
Allow carrier migration between different allocator types
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The use of vfork was removed in OTP-19
with the introduction of the dedicated forker process.
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