ruby.git - The Ruby Programming Language

Age	Commit message (Collapse)	Author
2020-10-21	Ractor.make_shareable(obj)	Koichi Sasada
	Introduce new method Ractor.make_shareable(obj) which tries to make obj shareable object. Protocol is here. (1) If obj is shareable, it is shareable. (2) If obj is not a shareable object and if obj can be shareable object if it is frozen, then freeze obj. If obj has reachable objects (rs), do rs.each{\|o\| Ractor.make_shareable(o)} recursively (recursion is not Ruby-level, but C-level). (3) Otherwise, raise Ractor::Error. Now T_DATA is not a shareable object even if the object is frozen. If the method finished without error, given obj is marked as a sharable object. To allow makng a shareable frozen T_DATA object, then set `RUBY_TYPED_FROZEN_SHAREABLE` as type->flags. On default, this flag is not set. It means user defined T_DATA objects are not allowed to become shareable objects when it is frozen. You can make any object shareable by setting FL_SHAREABLE flag, so if you know that the T_DATA object is shareable (== thread-safe), set this flag, at creation time for example. `Ractor` object is one example, which is not a frozen, but a shareable object. Notes: Merged: https://github.com/ruby/ruby/pull/3678
2020-09-04	check multi_ractor mode at main_p	Koichi Sasada
	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
2020-09-03	Introduce Ractor mechanism for parallel execution	Koichi Sasada
	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