54 void semaphore_free(semaphore_t *semaphore) {  in semaphore_free()  argument
55   if (!semaphore)  in semaphore_free()
58   if (semaphore->fd != INVALID_FD)  in semaphore_free()
59     close(semaphore->fd);  in semaphore_free()
60   osi_free(semaphore);  in semaphore_free()
63 void semaphore_wait(semaphore_t *semaphore) {  in semaphore_wait()  argument
64   assert(semaphore != NULL);  in semaphore_wait()
65   assert(semaphore->fd != INVALID_FD);  in semaphore_wait()
68   if (eventfd_read(semaphore->fd, &value) == -1)  in semaphore_wait()
72 bool semaphore_try_wait(semaphore_t *semaphore) {  in semaphore_try_wait()  argument
73   assert(semaphore != NULL);  in semaphore_try_wait()
74   assert(semaphore->fd != INVALID_FD);  in semaphore_try_wait()
76   int flags = TEMP_FAILURE_RETRY(fcntl(semaphore->fd, F_GETFL));  in semaphore_try_wait()
81   if (TEMP_FAILURE_RETRY(fcntl(semaphore->fd, F_SETFL, flags | O_NONBLOCK)) == -1) {  in semaphore_try_wait()
87   if (eventfd_read(semaphore->fd, &value) == -1)  in semaphore_try_wait()
90   if (TEMP_FAILURE_RETRY(fcntl(semaphore->fd, F_SETFL, flags)) == -1)  in semaphore_try_wait()
95 void semaphore_post(semaphore_t *semaphore) {  in semaphore_post()  argument
96   assert(semaphore != NULL);  in semaphore_post()
97   assert(semaphore->fd != INVALID_FD);  in semaphore_post()
99   if (eventfd_write(semaphore->fd, 1ULL) == -1)  in semaphore_post()
103 int semaphore_get_fd(const semaphore_t *semaphore) {  in semaphore_get_fd()  argument
104   assert(semaphore != NULL);  in semaphore_get_fd()
105   assert(semaphore->fd != INVALID_FD);  in semaphore_get_fd()
106   return semaphore->fd;  in semaphore_get_fd()