// To trigger the race:
		// 1) lk3 or lk4 need to advance and increment the ref on the existing resource,
		//    successfully acquiring the lock.
		// 2) lk2 then needs to advance and remove the resource from lockMap.
		// 3) lk3 or lk4 (whichever didn't execute in step 1) then executes and creates
		//    a new entry in lockMap and acquires a lock for the same resource.

		<-lk2ch
		lk3ok := <-lk3ch
		lk4ok := <-lk4ch

		if lk3ok && lk4ok {

	}
	if len(l.lockUID) != 0 {
		t.Fatalf("lockUID len, got %d, want %d + %d", len(l.lockUID), 0, 0)
	}
}

func Test_localLocker_expireOldLocksExpire(t *testing.T) {
	rng := rand.New(rand.NewSource(0))
	quorum := 0
	// Numbers of unique locks
	for _, locks := range []int{100, 1000, 1e6} {
		if testing.Short() && locks > 100 {
			continue
		}
		t.Run(fmt.Sprintf("%d-locks", locks), func(t *testing.T) {

 *     .url("http://publicobject.com/helloworld.txt")
 *     .build();
 * Response forceCacheResponse = client.newCall(request).execute();
 * if (forceCacheResponse.code() != 504) {
 *   // The resource was cached! Show it.
 * } else {
 *   // The resource was not cached.
 * }
 * ```
 *
 * This technique works even better in situations where a stale response is better than no response.

    }

    /**
     * Create a managed resource wrapper
     *
     * @param <T> resource type
     * @param resource the resource to wrap
     * @return managed resource
     */
    public <T extends AutoCloseable> ManagedResource<T> manage(T resource) {
        String resourceId = registerResource(resource);
        return new ManagedResource<>(resource, resourceId, this);
    }

    /**

            // Given
            SmbResource resource = createMockResource();
            when(resource.exists()).thenReturn(true);
            when(resource.isFile()).thenReturn(true);
            when(resource.canWrite()).thenReturn(true);

            // When/Then
            assertTrue(resource.exists(), "Resource should exist");
            assertTrue(resource.isFile(), "Should be a file");

		locksHeld[resource] = []lockRequesterInfo{lri}
	}

	// Add a few concurrent read locks to the mix
	for i := range 50 {
		resource := fmt.Sprintf("bucket/get-object-%d", i)
		lri := lockRequesterInfo{
			Name:   resource,
			UID:    mustGetUUID(),
			Owner:  owners[i%len(owners)],
			Quorum: 2,
		}
		lris = append(lris, lri)
		locksHeld[resource] = append(locksHeld[resource], lri)

	}

	defer l.getMutex()()

	for _, resource := range args.Resources {
		lri, ok := l.lockMap[resource]
		if ok && !isWriteLock(lri) {
			// Unless it is a write lock reject it.
			err = fmt.Errorf("unlock attempted on a read locked entity: %s", resource)
			continue
		}
		if ok {
			reply = l.removeEntry(resource, args, &lri) || reply
		}
	}
	return
}

                        false), MESSAGE_TOO_LARGE("Message too large", ErrorCategory.PROTOCOL, false),

        // Resource errors
        OUT_OF_MEMORY("Out of memory", ErrorCategory.RESOURCE, true), TOO_MANY_SESSIONS("Too many sessions", ErrorCategory.RESOURCE,
                true), RESOURCE_LOCKED("Resource is locked", ErrorCategory.RESOURCE, true),

        // Transient errors

        when(filter.accept(resource)).thenReturn(false, true);

        TestIterator iterator = new TestIterator(filter);

        // Verify iteration
        assertTrue(iterator.hasNext());
        assertSame(resource, iterator.next());
        assertFalse(iterator.hasNext());

        // Both resources should be closed
        verify(filter, times(2)).accept(resource);
        verify(resource, times(2)).close();
    }

package jcifs;

/**
 * Exception for resource-related SMB errors
 *
 * This exception is thrown when resource issues occur such as:
 * - File handle leaks
 * - Connection pool exhaustion
 * - Memory allocation failures
 * - Quota exceeded
 */
public class SmbResourceException extends SmbException {

    private static final long serialVersionUID = 1L;

    /**
     * Resource type that caused the error
     */