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* josevalim/stdlib/dict:
Short-circuit common dict operations
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Given any Vt1 and Vt2 values, vtmerge(vtnew(Vt1, Vt2), vtold(Vt1, Vt2)) is always
equal to Vt1.
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Stop traversing all segments and buckets of empty
dictionaries by adding a clause that checks the
dictionary size.
This improved compilation of an erlang project from
7.5s to 5.5s seconds when trying out a sample
implementation of erl_lint that uses dicts.
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* bjorn/stdlib/string-tokens/OTP-12422:
Optimize string:tokens/2
Modernize and strengthen the test case for string:tokens/2
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We can save some time by reversing the original string
before starting the tokenization.
When there is only one separator, we can save even more time
by treating that case specially so that we don't have to call
lists:member/2 for each character.
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The returned variable table when linting a map expression shouldn't include
variables that didn't appear in the expression.
Reported-By: Alexei Sholik
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The case was discovered where a parent process would exit before closing
the zip file. The result was that a port would be left open
indefinitely, as the small zip server would not detect this condition.
By comparison, the file module will close the associated port when the
parent exits for any reason. This change would make the zip module more
consistent with the semantics of similar modules.
This change is breaking for any callers expecting to pass the handle to
another process for processing (assuming it exits).
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* oliv3/math_log2/OTP-12411:
Add math:log2/1
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The -dialyzer() attribute can be used for suppressing warnings in a
module by specifying functions or warning options. It can also be used
for requesting warnings in a module.
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* lemenkov/use_os_getenv_2:
fix missing include
Start using os:getenv/2 fun
Introduce os:getenv/2
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* lukas/erts/crashdump_improvements/OTP-12377:
erts: Make main thread safe from pipe closed event
erts: Improve crash dumps
erts: Rename sys_sigset to sys_signal
erts: Introduce thread suspend functions
erts: Remove usage of QUANTIFY signal
erts: Add support for thread names
ets: Increase data available in crash dumps and ets:info
erts: Start compilation of beam_emu earlier
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OTP-12376
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* sverk/ets-take-2/OTP-12309:
erts: Optimize ets:lookup and ets:take for bags
Implement ets:take/2
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See #535
Signed-off-by: Peter Lemenkov <[email protected]>
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* siri/gen_server/try-catch/OTP-12263:
Add spec for gen_server:terminate/6,7
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* maint:
dialyzer: correct record updates
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Correct a bug introduced in commit 8498a3.
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* legoscia/io-message-queue-optimisation:
Optimise io requests for long message queues
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Robert has OK'ed the removal of the token ':-'.
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The reason for this is a requirement on enabling ssh_sftp to write a tar file on the server.
This new api function is used by ssh_sftp:open_tar/3,4.
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This is to prevent dialyzer warning "no local return".
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* maint:
Fix miscompilation when module contains multiple named funs
Fix locations of shadowing warnings in ms_transform
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maint
* nox/stdlib/ms_transform-locate-shadow-warning/OTP-12264:
Fix locations of shadowing warnings in ms_transform
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OTP-12301
* capflam/remove_empty_parts_in_binary_split:
Add 'trim_all' option to binary:split/3
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If a callback function was terminated with exit/1, there would be no
stack trace in the ERROR REPORT produced by gen_server. This has been
corrected. The actual exit reason for the process is not changed.
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* siri/sup-spec-maps/OTP-11043:
Update emacs skeleton for supervisor to use maps
Update dialyzer test with maps in supervisor properties
Add documentation of maps in supervisor flags and child specs
Add test of maps in supervisor flags and child specs
New function supervisor:get_childspec/2
Allow maps for supervisor flags and child specs
Rebase supervisor
Add more tests of supervisor
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This option can be set to remove _ALL_ empty parts of the result of a call to
binary:split/3.
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* egil/nox/maps-match_specs/OTP-12270:
erts: Fix return value from erts_maps_get to be const
Properly support maps in match_specs
Support maps in ms_transform
Return pointer to value in erts_maps_get()
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* maint:
Fix rare race condition in Dets
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The correction is due to the the evil testcase
dets_SUITE:simultaneous_open(). If the process repairing a Dets file
is killed (should normally never happen), and another process tries to
repair the file, a temporary file from the first process could live on
for a while, even after a successful call to file:delete(). This has
only been seen on W-nd-ows, where it is a known problem.
There are other ways to deal with the problem (rename the file; use
some other filename), but we continue using one certain filename in
order to be as backwards compatible as possible.
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Takes the name of the child (or Pid, in the case of a
simple_one_for_one supervisor) and returns the map which specifies the
child.
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Earlier, supervisor flags and child specs were given as tuples. While
this is kept for backwards compatibility, it is now also allowed to
give these parameters as maps:
-type sup_flags() :: #{strategy => strategy(), % optional
intensity => non_neg_integer(), % optional
period => pos_integer()} % optional
-type child_spec() :: #{id => child_id(), % mandatory
start => mfargs(), % mandatory
restart => restart(), % optional
shutdown => shutdown(), % optional
type => worker(), % optional
modules => modules()} % optional
Default values are as follows:
Supervisor flags:
strategy: one_for_one
intensity: 1
period: 5
Child specs:
restart: permanent
type: worker
shutdown: 5000 for workers, 'infinity' for supervisors
modules: [M], where M comes from the child's start {M,F,A}
Some of these default values are quite hard to decide on, since there
really is no "most common way". It always depends on the use case. So
we decided that the most important reason for having default values is
to lower the start barrier and get "something" running. For production
use, most systems must be fine tuned in this respect anyway.
This is how we reasoned about it:
Strategy: just pick one - and 'one_for_one' was most used in OTP.
Max restart frequency (intensity/period): by allowing one restart only
we keep the important supervisor feature of restarting children, but
we also avoid the possibility of scaling to a huge amount of restarts
if the supervisor tree is deep.
Restart: just pick one - and 'permanent' is fairly common.
Shutdown for workers: to avoid the confusion of why the terminate
function is not executed, we decided not to use 'brutal_kill'. Which
number to use is probably not that important, so we chose 5000.
Shutdown for supervisors: the recommended shutdown value for
supervisors is 'infinity', so we decied to use that. Having the same
(integer) value as for workers can give very strange results.
Type: just pick one - and we believe that 'worker' is most common
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Remove duplicated code related to checking of supervisor flags.
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OTP-12224
* vinoski/edlin-ctrl-u:
Make shell ctrl-u save killed text correctly
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* egil/maps/variable-keys/OTP-12218: (22 commits)
compiler: Update test for Maps aliasing
compiler: Properly support Map aliasing
compiler: Refactor Map pairs aliasing
compiler: Fix harmless need_heap error for Maps
stdlib: Update Map tests
stdlib: Use environment bindings for Maps keys in erl_eval matching
debugger: Update Map tests
compiler: Update Map tests
compiler: Fix v3_core Maps pair chains
compiler: Use expressions in core patterns
compiler: Use variables in Map cerl inliner
compiler: Reintroduce binary limit for Map keys
compiler: Shameless v3_core hack for variables
compiler: Use variables in Map beam assmebler
compiler: Use variables in Map kernel pass
compiler: Use variables in Map core pass
compiler: Normalize unary ops on Maps key literals
stdlib: Update Map tests
stdlib: erl_lint Map key variables
compiler: Maps are always patterns never values in matching
...
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Conflicts:
lib/stdlib/src/stdlib.appup.src
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