*
 * Manages pools of pre-registered memory regions to avoid the overhead
 * of frequent registration/deregistration during RDMA operations.
 */
public class RdmaBufferManager implements AutoCloseable {

    private static final Logger log = LoggerFactory.getLogger(RdmaBufferManager.class);

    private final RdmaProvider provider;
    private final ConcurrentLinkedQueue<RdmaMemoryRegion> availableSendRegions;

    
    region.close();
}

@Test
public void testRdmaBufferManager() throws Exception {
    RdmaProvider provider = new TcpRdmaProvider();  // Use TCP for testing
    RdmaBufferManager manager = new RdmaBufferManager(provider);
    
    // Test buffer allocation
    RdmaMemoryRegion region = manager.getSendRegion(1024);
    assertNotNull(region);
    assertTrue(region.getSize() >= 1024);
    

import jcifs.internal.smb2.rdma.tcp.TcpMemoryRegion;

/**
 * Unit tests for RDMA buffer manager
 */
public class RdmaBufferManagerTest {

    @Mock
    private RdmaProvider mockProvider;

    private RdmaBufferManager bufferManager;
    private AutoCloseable mocks;

    @BeforeEach
    public void setUp() throws Exception {
        mocks = MockitoAnnotations.openMocks(this);

    private static final Logger log = LoggerFactory.getLogger(RdmaTransport.class);

    private final SmbTransportInternal delegate;
    private final RdmaProvider rdmaProvider;
    private final RdmaBufferManager bufferManager;
    private final RdmaStatistics statistics;
    private RdmaConnection rdmaConnection;
    private final Object connectionLock = new Object();

    /**

    }

    @Test
    public void testRdmaBufferManagerUnitTests() throws Exception {
        RdmaProvider provider = RdmaProviderFactory.selectBestProvider();

        try (RdmaBufferManager bufferManager = new RdmaBufferManager(provider)) {
            // Test basic buffer allocation
            RdmaMemoryRegion sendRegion = bufferManager.getSendRegion(4096);
            assertNotNull(sendRegion, "Send region should not be null");