this.totalAllocated = new AtomicLong();
        this.totalReleased = new AtomicLong();

        // Pre-allocate buffer pool
        initializeBufferPool();
    }

    /**
     * Initialize the buffer pool with pre-allocated regions
     */
    private void initializeBufferPool() {
        // Allocate send buffers
        for (int i = 0; i < initialSendBuffers; i++) {
            try {

            }
        };

        // When
        BufferCache.getBuffers(req, rsp);

        // Then
        assertNotNull(req.txn_buf, "Request buffer should be allocated");
        assertNotNull(rsp.txn_buf, "Response buffer should be allocated");
        assertEquals(SmbComTransaction.TRANSACTION_BUF_SIZE, req.txn_buf.length, "Request buffer should have correct size");

    private final int pointer;

    /**
     * Constructs a new PacUnicodeString instance.
     *
     * @param length the actual length of the string in bytes
     * @param maxLength the maximum allocated length for the string in bytes
     * @param pointer the pointer/offset to the string data
     */
    public PacUnicodeString(final short length, final short maxLength, final int pointer) {
        this.length = length;

            assertNotNull(sendBuffer, "Send buffer should be allocated");
            assertTrue(sendBuffer.getSize() >= 8192, "Send buffer should be at least 8KB");

            RdmaMemoryRegion recvBuffer = bufferManager.getReceiveRegion();
            assertNotNull(recvBuffer, "Receive buffer should be allocated");
            assertTrue(recvBuffer.getSize() > 0, "Receive buffer should have positive size");

        verifyNoMoreInteractions(cfg);

        // When cache is empty, getBuffer allocates a new buffer with configured size
        byte[] buf = impl.getBuffer();
        assertNotNull(buf, "getBuffer should never return null");
        assertEquals(5, buf.length, "Newly allocated buffer length should match config maximum size");
    }

        // Allocate regions larger than pool buffer size to force new allocations
        RdmaMemoryRegion region1 = bufferManager.getSendRegion(131072); // 128KB > 64KB pool size
        RdmaMemoryRegion region2 = bufferManager.getSendRegion(131072); // Another large allocation

        assertTrue(bufferManager.getTotalAllocated() > initialAllocated, "Total allocated should increase");

            cleanupExecutor.shutdownNow();
            Thread.currentThread().interrupt();
        }

        // Log final statistics
        log.info("ResourceManager shutdown complete. Total allocated: {}, released: {}, leaks: {}, force cleaned: {}", totalAllocated.get(),
                totalReleased.get(), totalLeaks.get(), cleaned);
    }

    /**
     * Create a managed resource wrapper
     *

     */
    @Override
    public Object evaluate(final String template, final Map<String, Object> paramMap) {
        // Null-safety: return null for blank templates
        // Early return is safe here as no resources have been allocated yet
        if (StringUtil.isBlank(template)) {
            if (logger.isDebugEnabled()) {
                logger.debug("Template is blank, returning null");
            }
            return null;
        }

            // Default constructor
        }

        /**
         * The actual length of the string in bytes.
         */
        public short length;
        /**
         * The maximum allocated length of the string in bytes.
         */
        public short maximum_length;
        /**
         * The buffer containing the Unicode characters.
         */
        public short[] buffer;

     *
     * @return active connection count
     */
    public long getConnectionsActive() {
        return connectionsActive.get();
    }

    /**
     * Get total number of memory regions allocated
     *
     * @return memory region count
     */
    public long getMemoryRegionsAllocated() {
        return memoryRegionsAllocated.get();
    }

    /**