50 lines
2.2 KiB
C
50 lines
2.2 KiB
C
/************************************************************************
|
|
** **
|
|
** The YapTab/YapOr/OPTYap systems **
|
|
** **
|
|
** YapTab extends the Yap Prolog engine to support sequential tabling **
|
|
** YapOr extends the Yap Prolog engine to support or-parallelism **
|
|
** OPTYap extends the Yap Prolog engine to support or-parallel tabling **
|
|
** **
|
|
** **
|
|
** Yap Prolog was developed at University of Porto, Portugal **
|
|
** **
|
|
************************************************************************/
|
|
|
|
/* **********************************************************************
|
|
** Atomic locks for PTHREADS **
|
|
************************************************************************/
|
|
|
|
#include <pthread.h>
|
|
|
|
#define INIT_LOCK(LOCK_VAR) pthread_mutex_init(&(LOCK_VAR), NULL)
|
|
#define DESTROY_LOCK(LOCK_VAR) pthread_mutex_destroy(&(LOCK_VAR))
|
|
#define TRY_LOCK(LOCK_VAR) pthread_mutex_trylock(&(LOCK_VAR))
|
|
#define LOCK(LOCK_VAR) pthread_mutex_lock(&(LOCK_VAR))
|
|
#define UNLOCK(LOCK_VAR) pthread_mutex_unlock(&(LOCK_VAR))
|
|
static inline int
|
|
xIS_LOCKED(pthread_mutex_t *LOCK_VAR) {
|
|
if (pthread_mutex_trylock(LOCK_VAR) == 0) {
|
|
pthread_mutex_unlock(LOCK_VAR);
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
static inline int
|
|
xIS_UNLOCKED(pthread_mutex_t *LOCK_VAR) {
|
|
if (pthread_mutex_trylock(LOCK_VAR) == 0) {
|
|
pthread_mutex_unlock(LOCK_VAR);
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
#define IS_LOCKED(LOCK_VAR) xIS_LOCKED(&(LOCK_VAR))
|
|
#define IS_UNLOCKED(LOCK_VAR) xIS_UNLOCKED(&(LOCK_VAR))
|
|
|
|
#define INIT_RWLOCK(X) pthread_rwlock_init(&(X), NULL)
|
|
#define DESTROY_RWLOCK(X) pthread_rwlock_destroy(&(X))
|
|
#define READ_LOCK(X) pthread_rwlock_rdlock(&(X))
|
|
#define READ_UNLOCK(X) pthread_rwlock_unlock(&(X))
|
|
#define WRITE_LOCK(X) pthread_rwlock_wrlock(&(X))
|
|
#define WRITE_UNLOCK(X) pthread_rwlock_unlock(&(X))
|