@Mock
    private Configuration config;

    @Mock
    private CIFSContext cifsContext;

    @BeforeEach
    void setup() {
        // Tree handle lifecycle and config
        lenient().when(tree.acquire()).thenReturn(tree);
        lenient().when(tree.isConnected()).thenReturn(true);

        // CIFS context returns same config to build responses during initResponse

	}

	var unlockOnDefer bool
	nsUnlocker := func() {}
	defer func() {
		if unlockOnDefer {
			nsUnlocker()
		}
	}()

	// Acquire lock
	if !opts.NoLock {
		lock := z.NewNSLock(bucket, object)
		lkctx, err := lock.GetRLock(ctx, globalOperationTimeout)
		if err != nil {
			return nil, err
		}
		ctx = lkctx.Context()

### Locks

We have 3 different things that we synchronize on.

#### Http2Connection

This lock guards internal state of each connection. This lock is never held for blocking operations. That means that we acquire the lock, read or write a few fields and release the lock. No I/O and no application-layer callbacks.

#### Http2Stream

        this.parent = parent;
        this.wildcard = wildcard;
        this.nameFilter = filter;
        this.searchAttributes = searchAttributes;

        this.treeHandle = th.acquire();
        try {
            this.next = open();
            if (this.next == null) {
                doClose();
            }
        } catch (final Exception e) {
            doClose();
            throw e;

///

### `startup` and `shutdown` together { #startup-and-shutdown-together }

There's a high chance that the logic for your *startup* and *shutdown* is connected, you might want to start something and then finish it, acquire a resource and then release it, etc.

Doing that in separated functions that don't share logic or variables together is more difficult as you would need to store values in global variables or similar tricks.

    } finally {
      if (!satisfied) {
        leave();
      }
    }
  }

  /**
   * Enters this monitor when the guard is satisfied. Blocks at most the given time, including both
   * the time to acquire the lock and the time to wait for the guard to be satisfied, and may be
   * interrupted.
   *
   * @return whether the monitor was entered, which guarantees that the guard is now satisfied

  Striped64() {}

  /** CASes the base field. */
  final boolean casBase(long cmp, long val) {
    return UNSAFE.compareAndSwapLong(this, BASE_OFFSET, cmp, val);
  }

  /** CASes the busy field from 0 to 1 to acquire lock. */
  final boolean casBusy() {
    return UNSAFE.compareAndSwapInt(this, BUSY_OFFSET, 0, 1);
  }

  /**
   * Computes the function of current and new value. Subclasses should open-code this update

    /**
     * Acquires a reference to this transport, incrementing the usage count.
     *
     * @return session increased usage count
     */
    public Transport acquire() {
        final long usage = this.usageCount.incrementAndGet();
        if (log.isTraceEnabled()) {
            log.trace("Acquire transport " + usage + " " + this);
        }
        return this;

import java.net.ProtocolException
import java.net.Proxy

/**
 * Listener for metrics events. Extend this class to monitor the quantity, size, and duration of
 * your application's HTTP calls.
 *
 * All start/connect/acquire events will eventually receive a matching end/release event, either
 * successful (non-null parameters), or failed (non-null throwable). The first common parameters of

     */
    @Test
    public void testSessionManagementConcurrentPerformance() throws Exception {
        SmbTransportImpl mockTransport = Mockito.mock(SmbTransportImpl.class);
        Mockito.when(mockTransport.acquire()).thenReturn(mockTransport);

        SmbSessionImpl session = new SmbSessionImpl(mockContext, "testhost", "testdomain", mockTransport);

        int threadCount = 10;
        int operationsPerThread = 200;