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Add posix semaphores support

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There's still some bugs to work out on Windows and OpenBSD.
This commit is contained in:
Justine Tunney 2022-10-14 08:25:47 -07:00
parent f52f65b2e3
commit 8111462789
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GPG key ID: BE714B4575D6E328
36 changed files with 779 additions and 59 deletions
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32
libc/thread/semaphore.h Normal file
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#ifndef COSMOPOLITAN_LIBC_CALLS_SEMAPHORE_H_
#define COSMOPOLITAN_LIBC_CALLS_SEMAPHORE_H_
#include "libc/calls/struct/timespec.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
#define SEM_FAILED ((sem_t *)0)
typedef struct {
union {
struct {
_Atomic(int) sem_value;
bool sem_pshared;
};
void *sem_space[32];
};
} sem_t;
int sem_init(sem_t *, int, unsigned);
int sem_destroy(sem_t *);
int sem_post(sem_t *);
int sem_wait(sem_t *);
int sem_trywait(sem_t *);
int sem_timedwait(sem_t *, const struct timespec *);
int sem_getvalue(sem_t *, int *);
sem_t *sem_open(const char *, int, ...);
int sem_close(sem_t *);
int sem_unlink(const char *);
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_CALLS_SEMAPHORE_H_ */