contrib/gcc-8.0/libgomp/config/posix/omp-lock.h

   1 /* This header is used during the build process to find the size and
   2    alignment of the public OpenMP locks, so that we can export data
   3    structures without polluting the namespace.
   4
   5    In this default POSIX implementation, we used to map the two locks to the
   6    same PTHREADS primitive, but for OpenMP 3.0 sem_t needs to be used
   7    instead, as pthread_mutex_unlock should not be called by different
   8    thread than the one that called pthread_mutex_lock.  */
   9
  10 #include <pthread.h>
  11 #include <semaphore.h>
  12
  13 typedef pthread_mutex_t omp_lock_25_t;
  14 typedef struct { pthread_mutex_t lock; int count; } omp_nest_lock_25_t;
  15 #ifdef HAVE_BROKEN_POSIX_SEMAPHORES
  16 /* If we don't have working semaphores, we'll make all explicit tasks
  17    tied to the creating thread.  */
  18 typedef pthread_mutex_t omp_lock_t;
  19 typedef struct { pthread_mutex_t lock; int count; void *owner; } omp_nest_lock_t;
  20 #else
  21 typedef sem_t omp_lock_t;
  22 typedef struct { sem_t lock; int count; void *owner; } omp_nest_lock_t;
  23 #endif