mutex.h

00001 /*
00002   @file mutex.h
00003   
00004   @author Nicolas Williamson 
00005   @date January 2010
00006   
00007 */
00008 
00009 #ifndef __H_MUTEX__
00010 #define __H_MUTEX__
00011 
00016 typedef volatile unsigned int MUTEX;
00017 
00018 //Functions
00019 void mutex_lock(MUTEX* mutex_ptr); //Blocking; locks the mutex, waiting for the mutex to become unlocked if necessary
00020 void mutex_unlock(MUTEX* mutex_ptr); //unlocks the mutex if it was locked, does nothing otherwise
00021 int mutex_check(MUTEX* mutex_ptr); //returns true (1) if the mutex is locked, false (0) otherwise
00022  
00023 #endif