Mutex

Inherits: Reference < Object A synchronization mutex (mutual exclusion).

Description

Threads, and is equivalent to a binary Semaphore. It guarantees that only one thread can ever acquire the lock at a time. A mutex can be used to protect a critical section; however, be careful to avoid deadlocks.

Tutorials

• 使用多线程

  Methods

  Method Descriptions

• lock ( ) Mutex, blocks until it is unlocked by the current owner. Note: This function returns without blocking if the thread already has ownership of the mutex.

• Error try_lock ( ) Mutex, but does not block. Returns @GlobalScope.OK on success, @GlobalScope.ERR_BUSY otherwise. Note: This function returns @GlobalScope.OK if the thread already has ownership of the mutex.

• unlock ( ) Mutex, leaving it to other threads. Note: If a thread called lock or try_lock multiple times while already having ownership of the mutex, it must also call unlock the same number of times in order to unlock it correctly.