SEM.h File Reference

Simple semaphore, interface definition. More...

Functions
SEM	SEM_create (unsigned int options)
	Creates a semaphore.
unsigned int	SEM_takeW (SEM semaphore)
	Takes the semaphore. This call will block until the semaphore can be taken.
unsigned int	SEM_give (SEM semaphore)
	Gives the semaphore.
unsigned int	SEM_destroy (SEM semaphore)
	Destroys the semaphore.

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Detailed Description

Simple semaphore, interface definition.

Author:

JJRussell - russell@slac.stanford.edu

    CVS $Id: SEM.h,v 1.2 2011/03/25 21:15:02 saxton Exp $

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Function Documentation

SEM SEM_create

(

unsigned int

options

)

Creates a semaphore.

Return values:

	NON-NULL	A pointer to the created semaphore
	NULL	Error in the creation

Parameters:

options

A bit mask of options formed from the enumeration SEM_OPTIONS_M

unsigned int SEM_destroy

(

SEM

semaphore

)

Destroys the semaphore.

Parameters:

semaphore

The semaphore to destroy

unsigned int SEM_give

(

SEM

semaphore

)

Gives the semaphore.

Parameters:

semaphore

The semaphore to give

unsigned int SEM_takeW

(

SEM

semaphore

)

Takes the semaphore. This call will block until the semaphore can be taken.

Parameters:

semaphore

The semaphore to take