C++ (Cpp) S_LOCKの例

コード例 #1

ファイル: s_lock.c プロジェクト: winlibs/postgresql

int
main()
{
	srandom((unsigned int) time(NULL));

	test_lock.pad1 = test_lock.pad2 = 0x44;

	S_INIT_LOCK(&test_lock.lock);

	if (test_lock.pad1 != 0x44 || test_lock.pad2 != 0x44)
	{
		printf("S_LOCK_TEST: failed, declared datatype is wrong size\n");
		return 1;
	}

	if (!S_LOCK_FREE(&test_lock.lock))
	{
		printf("S_LOCK_TEST: failed, lock not initialized\n");
		return 1;
	}

	S_LOCK(&test_lock.lock);

	if (test_lock.pad1 != 0x44 || test_lock.pad2 != 0x44)
	{
		printf("S_LOCK_TEST: failed, declared datatype is wrong size\n");
		return 1;
	}

	if (S_LOCK_FREE(&test_lock.lock))
	{
		printf("S_LOCK_TEST: failed, lock not locked\n");
		return 1;
	}

	S_UNLOCK(&test_lock.lock);

	if (test_lock.pad1 != 0x44 || test_lock.pad2 != 0x44)
	{
		printf("S_LOCK_TEST: failed, declared datatype is wrong size\n");
		return 1;
	}

	if (!S_LOCK_FREE(&test_lock.lock))
	{
		printf("S_LOCK_TEST: failed, lock not unlocked\n");
		return 1;
	}

	S_LOCK(&test_lock.lock);

	if (test_lock.pad1 != 0x44 || test_lock.pad2 != 0x44)
	{
		printf("S_LOCK_TEST: failed, declared datatype is wrong size\n");
		return 1;
	}

	if (S_LOCK_FREE(&test_lock.lock))
	{
		printf("S_LOCK_TEST: failed, lock not re-locked\n");
		return 1;
	}

	printf("S_LOCK_TEST: this will print %d stars and then\n", NUM_DELAYS);
	printf("             exit with a 'stuck spinlock' message\n");
	printf("             if S_LOCK() and TAS() are working.\n");
	fflush(stdout);

	s_lock(&test_lock.lock, __FILE__, __LINE__);

	printf("S_LOCK_TEST: failed, lock not locked\n");
	return 1;
}

コード例 #2

ファイル: atomics.c プロジェクト: PJMODOS/postgres

void
pg_spinlock_barrier(void)
{
	S_LOCK(&dummy_spinlock);
	S_UNLOCK(&dummy_spinlock);
}