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()
78   int result = sem_init(&native_handle_, 0, count);
79   DCHECK_EQ(0, result);
80   USE(result);
85   int result = sem_destroy(&native_handle_);
86   DCHECK_EQ(0, result);
87   USE(result);
92   int result = sem_post(&native_handle_);
93   DCHECK_EQ(0, result);
94   USE(result);
100     int result = sem_wait(&native_handle_);
101     if (result == 0) return;  // Semaphore was signalled.
103     DCHECK_EQ(-1, result);
115     int result = sem_trywait(&native_handle_);
116     if (result == 0) return true;
127     int result = sem_timedwait(&native_handle_, &ts);
128     if (result == 0) return true;  // Semaphore was signalled.
130     if (result > 0) {
132       errno = result;
133       result = -1;
136     if (result == -1 && errno == ETIMEDOUT) {
141     DCHECK_EQ(-1, result);
157   BOOL result = CloseHandle(native_handle_);
158   DCHECK(result);
159   USE(result);
165   BOOL result = ReleaseSemaphore(native_handle_, 1, &dummy);
166   DCHECK(result);
167   USE(result);
172   DWORD result = WaitForSingleObject(native_handle_, INFINITE);
173   DCHECK(result == WAIT_OBJECT_0);
174   USE(result);
184       DWORD result = WaitForSingleObject(native_handle_, INFINITE - 1);
185       if (result == WAIT_OBJECT_0) {
188       DCHECK(result == WAIT_TIMEOUT);
191       DWORD result = WaitForSingleObject(
193       if (result == WAIT_TIMEOUT) {
196       DCHECK(result == WAIT_OBJECT_0);