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//! [0]
sem = QSemaphore(5) # sem.available() == 5
sem.acquire(3) # sem.available() == 2
sem.acquire(2) # sem.available() == 0
sem.release(5) # sem.available() == 5
sem.release(5) # sem.available() == 10
sem.tryAcquire(1) # sem.available() == 9, returns true
sem.tryAcquire(250) # sem.available() == 9, returns false
//! [0]
//! [1]
sem = QSemaphore(5) # a semaphore that guards 5 resources
sem.acquire(5) # acquire all 5 resources
sem.release(5) # release the 5 resources
sem.release(10) # "create" 10 new resources
//! [1]
//! [2]
sem = QSemaphore(5) # sem.available() == 5
sem.tryAcquire(250) # sem.available() == 5, returns false
sem.tryAcquire(3) # sem.available() == 2, returns true
//! [2]
//! [3]
sem = QSemaphore(5) # sem.available() == 5
sem.tryAcquire(250, 1000) # sem.available() == 5, waits 1000 milliseconds and returns false
sem.tryAcquire(3, 30000) # sem.available() == 2, returns true without waiting
//! [3]
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