dispatch_semaphore_t   18 src/runtime/gcd_thread_pool.cpp typedef struct dispatch_semaphore_s *dispatch_semaphore_t;
dispatch_semaphore_t   22 src/runtime/gcd_thread_pool.cpp extern dispatch_semaphore_t dispatch_semaphore_create(long value);
dispatch_semaphore_t   23 src/runtime/gcd_thread_pool.cpp extern long dispatch_semaphore_wait(dispatch_semaphore_t dsema, dispatch_time_t timeout);
dispatch_semaphore_t   24 src/runtime/gcd_thread_pool.cpp extern long dispatch_semaphore_signal(dispatch_semaphore_t dsema);
dispatch_semaphore_t   37 src/runtime/gcd_thread_pool.cpp     dispatch_semaphore_t join_semaphore;
dispatch_semaphore_t   72 src/runtime/gcd_thread_pool.cpp     dispatch_semaphore_t semaphore;