static int gcry_requiem_mutex_init(void **retval)
{
int ret;
gl_lock_t *lock;
*retval = lock = malloc(sizeof(*lock));
if ( ! lock )
return ENOMEM;
ret = glthread_lock_init(lock);
if ( ret < 0 )
free(lock);
return ret;
}
void
glthread_lock_lock (gl_lock_t *lock)
{
if (!lock->guard.done)
{
if (InterlockedIncrement (&lock->guard.started) == 0)
/* This thread is the first one to need this lock. Initialize it. */
glthread_lock_init (lock);
else
/* Yield the CPU while waiting for another thread to finish
initializing this lock. */
while (!lock->guard.done)
Sleep (0);
}
EnterCriticalSection (&lock->lock);
}
