blob: d102ce9d6f33e10deddf9895daf5fd81f3d79fd0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
/*-------------------------------------------------------------------------
*
* 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
|
