//   locker: A synchronization lock that is unlocked after initialization to avoid deadlocks.
	// Returns:
	//   *Stmt: A newly created statement object for executing SQL operations.
	//   error: An error if the statement preparation fails.
	New(ctx context.Context, key string, isTransaction bool, connPool ConnPool, locker sync.Locker) (*Stmt, error)

    //            (__)\       )\/\
    //                ||----w |
    //                ||     ||
    Runnable state = get();
    Blocker blocker = null;
    while (state instanceof Blocker || state == PARKED) {
      if (state instanceof Blocker) {
        blocker = (Blocker) state;
      }
      spinCount++;
      if (spinCount > MAX_BUSY_WAIT_SPINS) {
        /*

    // after some period of time the runner thread should become blocked on the task because it is
    // waiting for the slow interrupting thread to complete Thread.interrupt
    awaitBlockedOnInstanceOf(runner, InterruptibleTask.Blocker.class);

    Blocker blocker = (Blocker) LockSupport.getBlocker(runner);
    Thread owner = blocker.getOwner();
    assertThat(owner).isSameInstanceAs(interrupter);

    // after some period of time the runner thread should become blocked on the task because it is
    // waiting for the slow interrupting thread to complete Thread.interrupt
    awaitBlockedOnInstanceOf(runner, InterruptibleTask.Blocker.class);

    Blocker blocker = (Blocker) LockSupport.getBlocker(runner);
    Thread owner = blocker.getOwner();
    assertThat(owner).isSameInstanceAs(interrupter);

            TimeZone.setDefault(originalDefault);
        }
    }

    @Test
    public void test_processDBFluteSystem_unlocksAndLocks() {
        // This test verifies that the DBFluteSystem is properly unlocked and locked
        // during the process, though we can't directly test the lock state

        // When
        try {
            curtainBeforeHook.processDBFluteSystem();

    boolean reentrant = lock.isHeldByCurrentThread();
    long startTime = 0L;

    locked:
    {
      if (!fair) {
        // Check interrupted status to get behavior consistent with the fair case.
        if (Thread.interrupted()) {
          throw new InterruptedException();
        }
        if (lock.tryLock()) {
          break locked;
        }
      }
      startTime = initNanoTime(timeoutNanos);

            }
            return true;
        }

        // Check dynamically blocked IPs (Cache handles expiration automatically)
        final Boolean blocked = blockedIps.getIfPresent(ip);
        if (blocked != null) {
            if (logger.isDebugEnabled()) {
                logger.debug("IP dynamically blocked: ip={}", ip);
            }
            return true;
        }

        return false;

        assertFalse("Path traversal should be blocked", result);
    }

    @Test
    public void test_isValidVirtualHostPath_pathTraversal_encoded() throws Exception {
        setupVirtualHostHelper("/site1", "/site2");

        Boolean result = invokeIsValidVirtualHostPath("/site1/../../../etc");
        assertFalse("Encoded path traversal should be blocked", result);
    }

    @Test

            logger.debug("Rate limit check: clientIp={}, path={}", clientIp, httpRequest.getRequestURI());
        }

        // Check if IP is blocked
        if (rateLimitHelper.isBlocked(clientIp)) {
            if (logger.isDebugEnabled()) {
                logger.debug("Request blocked: clientIp={}", clientIp);
            }
            sendBlockedResponse(httpResponse);
            return;
        }

        // Check rate limit

   * specified access policy.
   *
   * @param capacity the capacity of this queue
   * @param fair if {@code true} then queue accesses for threads blocked on insertion or removal,
   *     are processed in FIFO order; if {@code false} the access order is unspecified.
   * @throws IllegalArgumentException if {@code capacity} is less than 1
   */