Function pthread_rwlock_trywrlock

include/hamlib/winpthreads.h:470–476

}

static int pthread_rwlock_trywrlock(pthread_rwlock_t *l)
{
	/* Try to grab lock if it has no users */
	if (!InterlockedCompareExchangePointer((volatile PVOID*) l, (void *)1, NULL)) return 0;

	return EBUSY;
}

static unsigned long long _pthread_time_in_ms(void)
{