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We want to make sure that if preregister is called with different data,
that the postponed job table is updated.
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for future extensions.
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Our current implementation of rb_postponed_job_register suffers from
some safety issues that can lead to interpreter crashes (see bug #1991).
Essentially, the issue is that jobs can be called with the wrong
arguments.
We made two attempts to fix this whilst keeping the promised semantics,
but:
* The first one involved masking/unmasking when flushing jobs, which
was believed to be too expensive
* The second one involved a lock-free, multi-producer, single-consumer
ringbuffer, which was too complex
The critical insight behind this third solution is that essentially the
only user of these APIs are a) internal, or b) profiling gems.
For a), none of the usages actually require variable data; they will
work just fine with the preregistration interface.
For b), generally profiling gems only call a single callback with a
single piece of data (which is actually usually just zero) for the life
of the program. The ringbuffer is complex because it needs to support
multi-word inserts of job & data (which can't be atomic); but nobody
actually even needs that functionality, really.
So, this comit:
* Introduces a pre-registration API for jobs, with a GVL-requiring
rb_postponed_job_prereigster, which returns a handle which can be
used with an async-signal-safe rb_postponed_job_trigger.
* Deprecates rb_postponed_job_register (and re-implements it on top of
the preregister function for compatability)
* Moves all the internal usages of postponed job register
pre-registration
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Notes:
Merged: https://github.com/ruby/ruby/pull/7310
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Notes:
Merged: https://github.com/ruby/ruby/pull/7330
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Split `PACKED_STRUCT` and `PACKED_STRUCT_UNALIGNED` macros into the
macros bellow:
* `RBIMPL_ATTR_PACKED_STRUCT_BEGIN`
* `RBIMPL_ATTR_PACKED_STRUCT_END`
* `RBIMPL_ATTR_PACKED_STRUCT_UNALIGNED_BEGIN`
* `RBIMPL_ATTR_PACKED_STRUCT_UNALIGNED_END`
Notes:
Merged: https://github.com/ruby/ruby/pull/7268
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Notes:
Merged: https://github.com/ruby/ruby/pull/5474
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After 5680c38c75aeb5cbd219aafa8eb48c315f287d97, postponed job APIs now
expect to be called on native threads not managed by Ruby and handles
getting a NULL execution context. However, in debug builds the change
runs into an assertion failure with GET_EC() which asserts that EC is
non-NULL. Avoid the assertion failure by passing `false` for `expect_ec`
instead as the intention is to handle when there is no EC.
Add a test from John Crepezzi and John Hawthorn to exercise this
situation.
See GH-4108
See GH-5094
[Bug #17573]
Co-authored-by: John Hawthorn <john@hawthorn.email>
Co-authored-by: John Crepezzi <john.crepezzi@gmail.com>
Notes:
Merged: https://github.com/ruby/ruby/pull/5156
Merged-By: XrXr
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Notes:
Merged: https://github.com/ruby/ruby/pull/4371
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Notes:
Merged: https://github.com/ruby/ruby/pull/3347
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Notes:
Merged: https://github.com/ruby/ruby/pull/3346
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Notes:
Merged: https://github.com/ruby/ruby/pull/3338
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To fix build failures.
Notes:
Merged: https://github.com/ruby/ruby/pull/3079
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This shall fix compile errors.
Notes:
Merged: https://github.com/ruby/ruby/pull/3079
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Split ruby.h
Notes:
Merged-By: shyouhei <shyouhei@ruby-lang.org>
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Asynchronous events such as signal trap, finalization timing,
thread switching and so on are managed by "interrupt_flag".
Ruby's threads check this flag periodically and if a thread
does not check this flag, above events doesn't happen.
This checking is CHECK_INTS() (related) macro and it is placed
at some places (laeve instruction and so on). However, at the end
of C methods, C blocks (IMEMO_IFUNC) etc there are no checking
and it can introduce uninterruptible thread.
To modify this situation, we decide to place CHECK_INTS() at
vm_pop_frame(). It increases interrupt checking points.
[Bug #16366]
This patch can introduce unexpected events...
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g -L frozen_string_literal ext/**/*.rb|xargs ruby -Ka -e'ARGV.each{|fn|puts
fn;open(fn,"r+"){|f|s=f.read.sub(/\A(#!.*\n)?(#.*coding.*\n)?/,"\\&#
frozen_string_literal: false\n");f.rewind;f.write s}}'
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53143 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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ext/-test-/tracepoint/depend: New files for dependencies.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43452 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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* ext/-test-/postponed_job/postponed_job.c,
test/-ext-/postponed_job/test_postponed_job.rb: add a test.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40967 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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* ext/-test-/postponed_job/postponed_job.c (pjob_register),
(pjob_call_direct): none void function.
* ext/-test-/tracepoint/tracepoint.c (tracepoint_track_objspace_events):
adjust type to get rid of implicit cast.
* ext/objspace/object_tracing.c (newobj_i): ditto.
* ext/tk/tkutil/tkutil.c (tk_conv_args): adjust type against
RHASH_SIZE().
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40965 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40943 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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Postponed jobs are registered with this API. Registered jobs
are invoked at `ruby-running-safe-point' as soon as possible.
This timing is completely same as finalizer timing.
There are two APIs:
* rb_postponed_job_register(flags, func, data): register a
postponed job with data. flags are reserved.
* rb_postponed_job_register_one(flags, func, data): same as
`rb_postponed_job_register', but only one `func' job is
registered (skip if `func' is already registered).
This change is mostly written by Aman Gupta (tmm1).
https://bugs.ruby-lang.org/issues/8107#note-15
[Feature #8107]
* gc.c: use postponed job API for finalizer.
* common.mk: add dependency from vm_trace.c to debug.h.
* ext/-test-/postponed_job/extconf.rb, postponed_job.c,
test/-ext-/postponed_job/test_postponed_job.rb: add a test.
* thread.c: implement postponed API.
* vm_core.h: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40940 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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