/Godot 3.0


Inherits: Reference < Object

Category: Core

Brief Description

A synchronization Semaphore.

Member Functions

int post ( )
int wait ( )


A synchronization Semaphore. Element used to synchronize multiple Threads. Initialized to zero on creation. Be careful to avoid deadlocks. For a binary version, see Mutex.

Member Function Description

int post ( )

Lowers the Semaphore, allowing one more thread in. Returns OK on success, ERR_BUSY otherwise.

int wait ( )

Tries to wait for the Semaphore, if its value is zero, blocks until non-zero. Returns OK on success, ERR_BUSY otherwise.

© 2014–2018 Juan Linietsky, Ariel Manzur, Godot Engine contributors
Licensed under the MIT License.