* Release a send region back to the pool
     *
     * @param region memory region to release
     */
    public void releaseSendRegion(RdmaMemoryRegion region) {
        if (region.getSize() == sendBufferSize && availableSendRegions.size() < initialSendBuffers * 2) {
            availableSendRegions.offer(region);
        } else {
            region.close();
            totalReleased.incrementAndGet();
        }
    }

        // Get a region and release it
        RdmaMemoryRegion region1 = bufferManager.getSendRegion(1024);
        bufferManager.releaseSendRegion(region1);

        // Get another region - should potentially reuse from pool
        RdmaMemoryRegion region2 = bufferManager.getSendRegion(1024);
        assertNotNull(region2);

        // Both regions should be valid

<div class="md-copyright">
    <div class="md-copyright__highlight">
        The FastAPI trademark is owned by <a href="https://tiangolo.com" target="_blank">@tiangolo</a> and is registered in the US and across other regions
    </div>
    {% if not config.extra.generator == false %}
    Made with
    <a href="https://squidfunk.github.io/mkdocs-material/" target="_blank" rel="noopener">
        Material for MkDocs
    </a>
    {% endif %}

 * 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,

    /**
     * Remote read access to the memory region
     */
    REMOTE_READ,

    /**

          trigger-phrase: '.*run\W+elasticsearch-ci/{pr-job}.*'
          github-hooks: true
          status-context: elasticsearch-ci/{pr-job}
          cancel-builds-on-update: true
          excluded-regions:
            - ^docs/.*
          black-list-labels:
            - '>test-mute'
    builders:
      - inject:
          properties-file: '.ci/java-versions.properties'
          properties-content: |

          github-hooks: true
          status-context: elasticsearch-ci/part-2-fips
          cancel-builds-on-update: true
          black-list-target-branches:
            - 6.8
          excluded-regions:
            - ^docs/.*
          white-list-labels:
            - 'Team:Security'
          black-list-labels:
            - '>test-mute'
    builders:
      - inject:

    }

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

    /**
     * Get number of currently active memory regions
     *
     * @return active memory region count
     */
    public long getMemoryRegionsActive() {

          github-hooks: true
          status-context: elasticsearch-ci/packaging-upgrade-tests
          cancel-builds-on-update: true
          black-list-target-branches:
            - 6.8
          excluded-regions:
            - ^docs/.*
          white-list-labels:
            - ':Delivery/Packaging'
          black-list-labels:
            - '>test-mute'
    axes:
      - axis:
          type: label-expression

/**
 * 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

          github-hooks: true
          status-context: elasticsearch-ci/part-1-fips
          cancel-builds-on-update: true
          black-list-target-branches:
            - 6.8
          excluded-regions:
            - ^docs/.*
          white-list-labels:
            - 'Team:Security'
          black-list-labels:
            - '>test-mute'
    builders:
      - inject: