Age | Commit message (Collapse) | Author |
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The next code snippets from supervisor.erl show that Shutdown from a
child specification must be greater than zero and the same applies to
MaxT.
--- supervisor.erl ----------------------------------------------------------
validShutdown(Shutdown, _)
when is_integer(Shutdown), Shutdown > 0 -> true;
validShutdown(infinity, _) -> true;
validShutdown(brutal_kill, _) -> true;
validShutdown(Shutdown, _) -> throw({invalid_shutdown, Shutdown}).
validIntensity(Max) when is_integer(Max),
Max >= 0 -> true;
validIntensity(What) -> throw({invalid_intensity, What}).
validPeriod(Period) when is_integer(Period),
Period > 0 -> true;
validPeriod(What) -> throw({invalid_period, What}).
-----------------------------------------------------------------------------
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* ahs/fix-gb_trees-doc:
Put gb_trees documentation into alphabetical order
OTP-9929
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* rj/fix-binary-doc-spec:
Fix the type spec from the doc of binary:part/3
OTP-9920
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As the doc explains, the Len of part() can be negative.
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Supervisor should never keep child specs for dead temporary children.
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* siri/stdlib/dialyzer-supervisor/OTP-9741:
Add test for upgrade of supervisor
Fix dialyzer warnings in supervisor
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* siri/stdlib/dialyzer-log_mf_h/OTP-9754:
Fix dialyzer warning about gen_event callback init/1 in log_mf_h
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The warning is about log_mf_h having a different spec for gen_event
callback init/1 than defined in gen_event.erl. log_mf_h allows return
value {error,Reason}, while gen_even only specifies successful return
values.
This commit add {error,Reason} as a valid return value to the
gen_event callback, since this is handled by the code.
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Dialyzer complained over a mismatch between the callback spec of
Mod:code_change in gen_server and the spec of supervisor:code_change
(which is the implementation of a gen_server Mod:code_change).
This commit changes the callback spec to allow {error,Reason} as
return value. Also, release_handler is updated to handle this return
value.
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* bjorn/compiler/options/OTP-9752:
filename documentation: Recommend against using filename:find_src/1,2
Teach filename:find_src/1,2 to handle slim or stripped BEAM files
filename: Eliminate failing call to Mod:module_info(source_file)
filename.erl:filter_options/1: Remove handling of dead options
compiler: Don't include {cwd,_} in module_info(compile)
compiler: Don't include source code options in module_info(compile)
hipe: Teach hipe to handle slim or stripped BEAM files
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Reported by Uwe Dauernheim.
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* bjorn/remove-regexp-module/OTP-9737:
stdlib: Remove the deprecated regexp module
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These dependency files was once used when building the documentation,
but are no longer needed.
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* cf/simple_one_for_one_shutdown:
Explain how dynamic child processes are stopped
Stack errors when dynamic children are stopped
Explicitly kill dynamic children in supervisors
Conflicts:
lib/stdlib/doc/src/supervisor.xml
OTP-9647
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* cf/supervisor_shutdown_infinity:
Add a warning to docs about workers' shutdown strategy
Allow an infinite timeout to shutdown worker processes
OTP-9648
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* bjorn/unicode-noncharacters/OTP-9624:
Allow noncharacter code points in unicode encoding and decoding
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* sverker/random-improved-algo:
Improve algorithm in module random.
Fix a bug in the implementation of the pseudo-random number generator
OTP-8713
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The two noncharacter code points 16#FFFE and 16#FFFF were not
allowed to be encoded or decoded using the unicode module or
bit syntax. That causes an inconsistency, since the noncharacters
16#FDD0 to 16#FDEF could be encoded/decoded.
There is two ways to fix that inconsistency.
We have chosen to allow 16#FFFE and 16#FFFF to be encoded and
decoded, because the noncharacters could be useful internally
within an application and it will make encoding and decoding
slightly faster.
Reported-by: Alisdair Sullivan
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Now, in child specification, the shutdown value can also be set to infinity
for worker children. This restriction was removed because this is not always
possible to predict the shutdown time for a worker. This is highly
application-dependent.
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According to the supervisor's documentation:
"Important note on simple-one-for-one supervisors: The dynamically
created child processes of a simple-one-for-one supervisor are not
explicitly killed, regardless of shutdown strategy, but are expected
to terminate when the supervisor does (that is, when an exit signal
from the parent process is received)."
All is fine as long as we stop simple_one_for_one supervisor manually.
Dynamic children catch the exit signal from the supervisor and leave.
But, if this happens when we stop an application, after the top
supervisor has stopped, the application master kills all remaining
processes associated to this application. So, dynamic children that trap
exit signals can be killed during their cleanup (here we mean inside
terminate/2). This is unpredictable and highly time-dependent.
In this commit, supervisor module is patched to explicitly terminate
dynamic children accordingly to the shutdown strategy.
NOTE: Order in which dynamic children are stopped is not defined. In
fact, this is "almost" done at the same time.
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Running Dialyzer on the test suites revealed a few type errors.
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OTP-9502
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* ml/two-trivial-documentation-fixes:
Fix trivial documentation errors
OTP-9498
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In the current implementation of supervisors, temporary children
should never be restarted. However, when a temporary child is
restarted as part of a one_for_all or rest_for_one strategy where
the failing process is not the temporary child, the supervisor
still tries to restart it.
Because the supervisor doesn't keep some of the MFA information
of temporary children, this causes the supervisor to hit its
restart limit and crash.
This patch fixes the behaviour by inserting a clause in
terminate_children/2-3 (private function) that will omit temporary
children when building a list of killed processes, to avoid having
the supervisor trying to restart them again.
Only supervisors in need of restarting children used the list, so
the change should be of no impact for the functions that called
terminate_children/2-3 only to kill all children.
The documentation has been modified to make this behaviour
more explicit.
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* cr/trivia:
replace "a ssl" with "an ssl"
reindent pkix_path_validation/3
Trivial documentation fixes
OTP-9464
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An incorrect spec, rpc:yield/1, has been fixed.
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* pan/stdlib_doc_fixes/OTP-9318:
Fixup of re doc and specs
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