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Random man page:
msem_unlock(2) -- unlock a semaphore
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msem_unlock() unlocks a binary semaphore. sem points to an msemaphore structure that specifies the semaphore to be unlocked. If the condition argument is zero, the semaphore will be unlocked, whether or not any other processes are currently attempting to lock it. If the condition argument is MSEM_IF_WAITERS, and some other process is waiting to lock the semaphore or the implementation cannot relia... |
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