Tom Lane 72a3902a66 Create an internal semaphore API that is not tied to SysV semaphores. ... As proof of concept, provide an alternate implementation based on POSIX semaphores. Also push the SysV shared-memory implementation into a separate file so that it can be replaced conveniently.		2002-05-05 00:03:29 +00:00
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darwin	Create an internal semaphore API that is not tied to SysV semaphores.	2002-05-05 00:03:29 +00:00
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