Vxworks Task states

Semaphore Control Routines

Call	Description
semBCreate( )	Allocates and initializes a binary semaphore.
semMCreate( )	Allocates and initializes a mutual-exclusion semaphore.
semCCreate( )	Allocates and initializes a counting semaphore.
semDelete( )	Terminates and frees a semaphore.
semTake( )	Takes a semaphore.
semGive( )	Gives a semaphore.
semFlush( )	Unblocks all tasks that are waiting for a semaphore.

 Wind Message Queue Control

Call	Description
msgQCreate( )	Allocates and initializes a message queue.
msgQDelete( )	Terminates and frees a message queue.
msgQSend( )	Sends a message to a message queue.
msgQReceive( )	Receives a message from a message queue.

Task Scheduler Control Routines

Call	Description
kernelTimeSlice( )	Controls round-robin scheduling.
taskPrioritySet( )	Changes the priority of a task.
taskLock( )	Disables task rescheduling.
taskUnlock( )	Enables task rescheduling.