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2019-11-12Monitor#exit: check monitor ownership.Koichi Sasada
Monitor#exit should be called by only onwer Thread. However, there is not check for it.
2019-10-20Native MonitorMixin::ConditionVariable#waitKoichi Sasada
MonitorMixin::ConditionVariable#wait can be interrupted just after Monitor#exit_for_cond. So implementation in C.
2019-10-20delegate synchronize methodKoichi Sasada
Delegate MonitorMixin#synchronize body to Monitor#synchronize. It makes guarantee interrupt safe (because Monitor#synchronize is written in C). I thought Ruby implementation is also safe, but I got stuck failure <http://ci.rvm.jp/results/trunk_test@P895/2327639> so that I introduce this fix to guarantee interrupt safe.
2019-10-20make monitor.so for performance. (#2576)Koichi Sasada
Recent monitor.rb has performance problem because of interrupt handlers. 'Monitor#synchronize' is frequently used primitive so the performance of this method is important. This patch rewrite 'monitor.rb' with 'monitor.so' (C-extension) and make it faster. See [Feature #16255] for details. Monitor class objects are normal object which include MonitorMixin. This patch introduce a Monitor class which is implemented on C and MonitorMixin uses Monitor object as re-entrant (recursive) Mutex. This technique improve performance because we don't need to care atomicity and we don't need accesses to instance variables any more on Monitor class. Notes: Merged-By: ko1 <ko1@atdot.net>