import java.util.EnumSet;

/**
 * Abstract base class for RDMA memory regions.
 *
 * Represents a registered memory region that can be used for
 * RDMA operations. The memory region contains a buffer, access
 * permissions, and keys for local and remote access.
 */
public abstract class RdmaMemoryRegion implements AutoCloseable {

    /** Memory buffer for RDMA operations */
    protected final ByteBuffer buffer;

 */
package jcifs.internal.smb2.rdma;

/**
 * RDMA memory access permissions for registered memory regions.
 * These flags control what operations can be performed on a memory region.
 */
public enum RdmaAccess {
    /**
     * Local read access to the memory region
     */
    LOCAL_READ,

    /**
     * Local write access to the memory region
     */
    LOCAL_WRITE,

    /**

        public long used;
        /** Committed non-heap memory in bytes */
        public long committed;
        /** Maximum non-heap memory in bytes */
        public long max;
        /** The percentage of non-heap memory usage. */
        public short percent;
    }

    /**
     * Data transfer object representing JVM buffer pool statistics.
     */

import jcifs.internal.smb2.rdma.RdmaMemoryRegion;

/**
 * DiSNI memory region implementation.
 *
 * This class would integrate with DiSNI to provide registered
 * memory regions for high-performance RDMA operations.
 *
 * Note: This is a skeleton implementation. A real implementation would
 * require proper DiSNI integration with actual memory registration.
 */
public class DisniMemoryRegion extends RdmaMemoryRegion {

/**
 * TCP memory region implementation.
 *
 * For TCP fallback, memory regions are just wrappers around
 * ByteBuffers since no real RDMA registration is needed.
 */
public class TcpMemoryRegion extends RdmaMemoryRegion {

    private static final AtomicInteger keyGenerator = new AtomicInteger(1000);

    /**
     * Create new TCP memory region
     *
     * @param buffer memory buffer

     */
    RdmaConnection connect(String hostname, int port) throws IOException;

    /**
     * Register memory region for RDMA operations
     *
     * @param buffer memory buffer to register
     * @param access access permissions for the memory region
     * @return registered memory region
     * @throws IOException if memory registration fails
     */

 * This class encapsulates RDMA channel metadata including remote memory keys,
 * addresses, and lengths for direct memory access operations.
 */
public class RdmaChannelInfo {

    private final Smb2RdmaTransform transform;

    /**
     * Create new RDMA channel info
     *
     * @param remoteKey remote memory key for RDMA access (token)
     * @param address remote memory address (offset)
     * @param length length of the memory region

<p>
Go approaches its memory model in much the same way as the rest of the language,
aiming to keep the semantics simple, understandable, and useful.
This section gives a general overview of the approach and should suffice for most programmers.
The memory model is specified more formally in the next section.
</p>

<p>
A data race is defined as

    }

    /**
     * Returns whether the content is cached in memory.
     *
     * @return true if the content is in memory, false if it is in a file
     */
    public boolean isInMemory() {
        return data != null;
    }

    /**
     * Returns the content as a byte array.
     * If the content is cached in memory, a clone of the data is returned.

## 1. Overview

SMB Direct enables high-performance data transfer using Remote Direct Memory Access (RDMA) technology. This provides ultra-low latency and high bandwidth data transfer by bypassing the traditional TCP/IP stack and allowing direct memory-to-memory transfers between client and server.

## 2. Protocol Specification Reference

- **MS-SMBD**: SMB2 Remote Direct Memory Access (RDMA) Transport Protocol