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Workaround apparent bug in 1.8.7/REE: block all during sem_timedwait

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Marc Siegel committed 2013-12-26 13:48:29 -05:00
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commit d2f8af03eb
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lib/process_shared/posix/semaphore.rb
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@@ -28,7 +28,10 @@ module ProcessShared
attach_function :sem_post, [:sem_p], :int
attach_function :sem_wait, [:sem_p], :int, :blocking => true
attach_function :sem_trywait, [:sem_p], :int, :blocking => true
attach_function :sem_timedwait, [:sem_p, TimeSpec], :int, :blocking => true
# Workaround bug which only appears to affect Ruby 1.8.7 and REE
BLOCKING_SEM_TIMEDWAIT = (RUBY_VERSION != '1.8.7')
attach_function :sem_timedwait, [:sem_p, TimeSpec], :int, :blocking => BLOCKING_SEM_TIMEDWAIT
error_check(:sem_close, :sem_unlink, :sem_init, :sem_destroy,
:sem_getvalue, :sem_post, :sem_wait, :sem_trywait,