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/*-------------------------------------------------------------------------
*
* Declarations for missing POSIX thread components.
*
* Currently this supplies an implementation of pthread_barrier_t for the
* benefit of macOS, which lacks it. These declarations are not in port.h,
* because that'd require <pthread.h> to be included by every translation
* unit.
*
*-------------------------------------------------------------------------
*/
#ifndef PG_PTHREAD_H
#define PG_PTHREAD_H
#include <pthread.h>
#ifndef HAVE_PTHREAD_BARRIER_WAIT
#ifndef PTHREAD_BARRIER_SERIAL_THREAD
#define PTHREAD_BARRIER_SERIAL_THREAD (-1)
#endif
typedef struct pg_pthread_barrier
{
bool sense; /* we only need a one bit phase */
int count; /* number of threads expected */
int arrived; /* number of threads that have arrived */
pthread_mutex_t mutex;
pthread_cond_t cond;
} pthread_barrier_t;
extern int pthread_barrier_init(pthread_barrier_t *barrier,
const void *attr,
int count);
extern int pthread_barrier_wait(pthread_barrier_t *barrier);
extern int pthread_barrier_destroy(pthread_barrier_t *barrier);
#endif
#endif