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Notes:
Merged: https://github.com/ruby/ruby/pull/4003
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* vm_sync_lock
* vm_sync_lock_enter
* vm_sync_lock_enter_nb
* vm_sync_lock_enter_cr
* vm_sync_barrier
Notes:
Merged: https://github.com/ruby/ruby/pull/3910
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Write barrier requires VM lock because it accesses VM global bitmap
but RB_VM_LOCK_ENTER() can invoke GC because another ractor can wait
to invoke GC and RB_VM_LOCK_ENTER() is barrier point. This means that
before protecting by a write barrier, GC can invoke.
To prevent such situation, RB_VM_LOCK_ENTER_NO_BARRIER() is introduced.
This lock primitive does not become GC barrier points.
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On windows, MJIT doesn't work without this patch because of
the declaration of ruby_single_main_ractor. This patch fix this
issue and move the definition of it from ractor.c to vm.c to locate
near place of ruby_current_vm_ptr.
Notes:
Merged: https://github.com/ruby/ruby/pull/3842
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This is variant of RB_VM_LOCK_ENTER_LEV, but accept current racotr's
pointer.
Notes:
Merged: https://github.com/ruby/ruby/pull/3842
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ruby_multi_ractor was a flag that indicates the interpreter doesn't
make any additional ractors (single ractor mode).
Instead of boolean flag, ruby_single_main_ractor pointer is introduced
which keeps main ractor's pointer if single ractor mode. If additional
ractors are created, ruby_single_main_ractor becomes NULL.
Notes:
Merged: https://github.com/ruby/ruby/pull/3842
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vm_sync.h does not need to include vm_core.h and ractor_pub.h.
Notes:
Merged: https://github.com/ruby/ruby/pull/3534
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rb_ractor_main_p() need to access to the ractor pointer in TLS.
However it is slow operation so that we need to skip this check
if it is not multi-ractor mode (!ruby_multi_ractor).
This performance regression is pointed at
https://bugs.ruby-lang.org/issues/17100#note-27
Notes:
Merged: https://github.com/ruby/ruby/pull/3513
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This commit introduces Ractor mechanism to run Ruby program in
parallel. See doc/ractor.md for more details about Ractor.
See ticket [Feature #17100] to see the implementation details
and discussions.
[Feature #17100]
This commit does not complete the implementation. You can find
many bugs on using Ractor. Also the specification will be changed
so that this feature is experimental. You will see a warning when
you make the first Ractor with `Ractor.new`.
I hope this feature can help programmers from thread-safety issues.
Notes:
Merged: https://github.com/ruby/ruby/pull/3365
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