24   kern_return_t result = semaphore_create(  in Semaphore()  local
26   DCHECK_EQ(KERN_SUCCESS, result);  in Semaphore()
27   USE(result);  in Semaphore()
32   kern_return_t result = semaphore_destroy(mach_task_self(), native_handle_);  in ~Semaphore()  local
33   DCHECK_EQ(KERN_SUCCESS, result);  in ~Semaphore()
34   USE(result);  in ~Semaphore()
39   kern_return_t result = semaphore_signal(native_handle_);  in Signal()  local
40   DCHECK_EQ(KERN_SUCCESS, result);  in Signal()
41   USE(result);  in Signal()
47     kern_return_t result = semaphore_wait(native_handle_);  in Wait()  local
48     if (result == KERN_SUCCESS) return;  // Semaphore was signalled.  in Wait()
49     DCHECK_EQ(KERN_ABORTED, result);  in Wait()
66     kern_return_t result = semaphore_timedwait(native_handle_, ts);  in WaitFor()  local
67     if (result == KERN_SUCCESS) return true;  // Semaphore was signalled.  in WaitFor()
68     if (result == KERN_OPERATION_TIMED_OUT) return false;  // Timeout.  in WaitFor()
69     DCHECK_EQ(KERN_ABORTED, result);  in WaitFor()
82   int result = sem_init(&native_handle_, 0, count);
83   DCHECK_EQ(0, result);
84   USE(result);
89   int result = sem_destroy(&native_handle_);
90   DCHECK_EQ(0, result);
91   USE(result);
96   int result = sem_post(&native_handle_);
97   DCHECK_EQ(0, result);
98   USE(result);
104     int result = sem_wait(&native_handle_);
105     if (result == 0) return;  // Semaphore was signalled.
107     DCHECK_EQ(-1, result);
119     int result = sem_trywait(&native_handle_);
120     if (result == 0) return true;
131     int result = sem_timedwait(&native_handle_, &ts);
132     if (result == 0) return true;  // Semaphore was signalled.
134     if (result > 0) {
136       errno = result;
137       result = -1;
140     if (result == -1 && errno == ETIMEDOUT) {
145     DCHECK_EQ(-1, result);
161   BOOL result = CloseHandle(native_handle_);
162   DCHECK(result);
163   USE(result);
169   BOOL result = ReleaseSemaphore(native_handle_, 1, &dummy);
170   DCHECK(result);
171   USE(result);
176   DWORD result = WaitForSingleObject(native_handle_, INFINITE);
177   DCHECK(result == WAIT_OBJECT_0);
178   USE(result);
188       DWORD result = WaitForSingleObject(native_handle_, INFINITE - 1);
189       if (result == WAIT_OBJECT_0) {
192       DCHECK(result == WAIT_TIMEOUT);
195       DWORD result = WaitForSingleObject(
197       if (result == WAIT_TIMEOUT) {
200       DCHECK(result == WAIT_OBJECT_0);