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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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Preprend PERL with /usr/bin/env
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Branch names and whitespaces.
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Fix typo in logger docs
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into maint
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* sverker/crash-dump-crash-literals/OTP-15181:
erts: Fix bug in crash dump generation
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Run under valgrind if environment variable VALGRIND_LOG_DIR is set.
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* lukas/clean_doc_xmldir/OTP-15190:
docs: make clean all XMLDIR
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Referencing a matched-out variable in a size expression makes it
impossible to calculate the size of the result based on the size of
the matched binary. The compiler would still generate code to do
this however, which would crash since the variable isn't defined
at the size calculation.
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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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* siri/logger/post-21/OTP-15132:
[logger] Allow setting kernel parameter 'logger_level' to 'all'
[kernel] Reduce risk of dead lock when terminating logger_sup
[logger] Fix regexp replacement for unicode strings
Update proc_lib:report_cb to obey logger formatter's size limiting params
[logger] Allow report callback with two arguments returning a string
Don't call report_cb from cth_log_redirect - formatter does that
Add legacy test of sasl_report_file_h and size limiting
[logger] Remove compiler warnings in test
[logger] Fix problem with test cases waiting for handler restart
[logger] Add ?LOG macro which takes Level as argument
[logger] Improve spec for set_handler_config/3 and set_primary_config/2
[logger] Generate .png file from .dia
[logger] Update documentation
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If the report callback is a fun of arity 2, then the second argument
is a map with the keys 'encoding', 'depth' and 'chars_limit', and the
fun must return a string which is size limited according to the given
depth and chars_limit.
If the report callback is a fun of arity 1, then it must return a
tuple containing a format string and a list of arguments. The
formatter will produce the string, and limit it's size.
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Specify which keys and associated values are allowed.
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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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by not using unsafe ei_gethostbyname.
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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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