merge revision(s) 60079: [Backport #13794]
thread_pthread.c: do not wakeup inside child processes * thread_pthread.c (rb_thread_wakeup_timer_thread): check ownership before incrementing (rb_thread_wakeup_timer_thread_low): ditto [Bug #13794] [ruby-core:83064]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@61854 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 60079: [Backport #13794]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@61854 b2dd03c8-39d4-4d8f-98ff-823fe69b080e