Inherits: Reference < Object

A synchronization semaphore.


A synchronization semaphore which can be used to synchronize multiple Threads. Initialized to zero on creation. Be careful to avoid deadlocks. For a binary version, see Mutex.


Error post ( )
Error wait ( )

Method Descriptions

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

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