usbi_mutex_trylock   35 third_party/libusb/src/libusb/os/threads_posix.h #define usbi_mutex_trylock		pthread_mutex_trylock
usbi_mutex_trylock   45 third_party/libusb/src/libusb/os/threads_windows.c int usbi_mutex_trylock(usbi_mutex_t *mutex) {