sde_lib_lock.h

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#if !defined(PAPI_SDE_LIB_LOCK_H)
#define PAPI_SDE_LIB_LOCK_H
 
#include "atomic_ops.h"
#if defined(AO_HAVE_test_and_set_acquire)
#define USE_LIBAO_ATOMICS
#endif
 
/*************************************************************************/
/* Locking functions similar to the PAPI locking function.               */
/*************************************************************************/
#if defined(USE_LIBAO_ATOMICS)
 
extern AO_TS_t _sde_hwd_lock_data;
#define sde_lock() {while (AO_test_and_set_acquire(&_sde_hwd_lock_data) != AO_TS_CLEAR) { ; } }
#define sde_unlock() { AO_CLEAR(&_sde_hwd_lock_data); }
 
#else //defined(USE_LIBAO_ATOMICS)
 
#include <pthread.h>
 
extern pthread_mutex_t _sde_hwd_lock_data;
 
#define  sde_lock()                          \
do{                                          \
  pthread_mutex_lock(&_sde_hwd_lock_data);   \
} while(0)
 
#define  sde_unlock(lck)                     \
do{                                          \
  pthread_mutex_unlock(&_sde_hwd_lock_data); \
} while(0)
 
#endif //defined(USE_LIBAO_ATOMICS)
 
 
 
#endif