The semaphore module provides a general use semaphore for synchronization.
This class represents a general counting semaphore as concieved by Edsger Dijkstra. As per Mesa type monitors however, "signal" has been replaced with "notify" to indicate that control is not transferred to the waiter when a notification is sent.
Initializes a semaphore object with the specified initial count.
|uint ||The initial count for the semaphore.|
Wait until the current count is above zero, then atomically decrement the count by one and return.
Suspends the calling thread until the current count moves above zero or until the supplied time period has elapsed. If the count moves above zero in this interval, then atomically decrement the count by one and return true. Otherwise, return false.
|Duration ||The time to wait.|
Atomically increment the current count by one. This will notify one waiter, if there are any in the queue.
If the current count is equal to zero, return. Otherwise, atomically decrement the count by one and return true.
Aliases the operating-system-specific semaphore type.
Handle to the system-specific semaphore.
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