pthread_once_t    587 native_client_sdk/src/libraries/third_party/pthreads-win32/pthread.h typedef struct pthread_once_t_ pthread_once_t;
pthread_once_t    126 third_party/tcmalloc/chromium/src/windows/port.h typedef LONG pthread_once_t;
pthread_once_t    123 third_party/tcmalloc/vendor/src/windows/port.h typedef LONG pthread_once_t;