Creates a lock.
Alias for Semaphore.wait.
A promise that gets resolved when execution is allowed to proceed.
Acquires all permits that are currently available and returns the number of acquired permits.
Number of acquired permits.
Schedules func to be called once a permit becomes available. Returns a promise that resolves to the return value of func.
The return type of func.
The function to be executed.
A promise that gets resolved with the return value of the function.
Returns the number of available permits.
The number of available permits.
Alias for Semaphore.signal.
Increases the number of permits by one. If there are other functions waiting, one of them will continue to execute in a future iteration of the event loop.
Synchronous function that tries to acquire a permit and returns true if successful, false otherwise.
Whether a permit could be acquired.
Returns a promise used to wait for a permit to become available. This method should be awaited on.
A promise that gets resolved when execution is allowed to proceed.
Same as Semaphore.wait except the promise returned gets resolved with false if no permit becomes available in time.
The time spent waiting before the wait is aborted. This is a lower bound, don't rely on it being precise.
A promise that gets resolved with true when execution is allowed to proceed or false if the time given elapses before a permit becomes available.
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A lock that can be used to synchronize critical sections in your code. For more details on how to use this class, please view the documentation of the Semaphore class from which Lock inherits.