lib/monitor.rb: prevent to initialize MonitorMixin twice
and allow to initialize again when obj.dup. Suggested by Benoit Daloze. [ruby-core:88504] [Feature #15000] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66215 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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@ -255,9 +255,13 @@ module MonitorMixin
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# Initializes the MonitorMixin after being included in a class or when an
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# object has been extended with the MonitorMixin
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def mon_initialize
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if defined?(@mon_mutex) && @mon_mutex_owner_object_id == object_id
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raise ThreadError, "already initialized"
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end
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@mon_mutex = Thread::Mutex.new
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@mon_mutex_owner_object_id = object_id
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@mon_owner = nil
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@mon_count = 0
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@mon_mutex = Thread::Mutex.new
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end
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def mon_check_owner
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