?? semaphore.h
字號:
/* include semaphoreh */
/* 4the fundamental datatype */
typedef struct {
int sem_fd[2]; /* two fds: [0] for reading, [1] for writing */
int sem_magic; /* magic number if open */
} mysem_t;
#define SEM_MAGIC 0x89674523
#ifdef SEM_FAILED
#undef SEM_FAILED
#define SEM_FAILED ((mysem_t *)(-1)) /* avoid compiler warnings */
#endif
/* end semaphoreh */
/* 4our functions */
int mysem_close(mysem_t *);
mysem_t *mysem_open(const char *, int, ... );
int mysem_post(mysem_t *);
int mysem_unlink(const char *);
int mysem_wait(mysem_t *);
/* 4and the corresponding wrapper functions */
void Mysem_close(mysem_t *);
mysem_t *Mysem_open(const char *, int, ... );
void Mysem_post(mysem_t *);
void Mysem_unlink(const char *);
void Mysem_wait(mysem_t *);
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