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