pthread_mutex_trylock
if (pthread_mutex_trylock(mutex_p) == EBUSY)
int pthread_mutex_trylock(pthread_mutex_t * __mutex)
STUB_FUNC1(pthread_mutex_trylock, PJT_MUTEX_TRYLOCK, int, void *)
switch (pthread_mutex_trylock(mtx)) {
__weak_reference(__Tthr_mutex_trylock, pthread_mutex_trylock);
#define CTX_TRYLOCK(ctx) pthread_mutex_trylock(&(ctx)->ctx_lock)
error = pthread_mutex_trylock(lock);