and Java’s <code>volatile</code> variables.
</p>

<h3 id="finalizer">Finalizers</h3>

<p>
The <a href="/pkg/runtime/"><code>runtime</code></a> package provides
a <code>SetFinalizer</code> function that adds a finalizer to be called when
a particular object is no longer reachable by the program.

  /** Reference to Finalizer.startFinalizer(). */
  private static final FinalizerStarter finalizerStarter;

  static {
    Class<?> finalizer = loadFinalizer(new SystemLoader(), new DecoupledLoader());
    finalizerStarter =
        finalizer != null
            ? new ReflectiveStarter(getStartFinalizer(finalizer))
            : new DirectStarter();
  }

  /** Reference to Finalizer.startFinalizer(). */
  private static final FinalizerStarter finalizerStarter;

  static {
    Class<?> finalizer = loadFinalizer(new SystemLoader(), new DecoupledLoader());
    finalizerStarter =
        finalizer != null
            ? new ReflectiveStarter(getStartFinalizer(finalizer))
            : new DirectStarter();
  }

 * RuntimeException}.
 *
 * <p>Here's an example that tests a {@code finalize} method:
 *
 * {@snippet :
 * final CountDownLatch latch = new CountDownLatch(1);
 * Object x = new MyClass() {
 *   ...
 *   protected void finalize() { latch.countDown(); ... }
 * };
 * x = null; // Hint to the JIT that x is stack-unreachable
 * GcFinalization.await(latch);
 * }
 *

 * RuntimeException}.
 *
 * <p>Here's an example that tests a {@code finalize} method:
 *
 * {@snippet :
 * final CountDownLatch latch = new CountDownLatch(1);
 * Object x = new MyClass() {
 *   ...
 *   protected void finalize() { latch.countDown(); ... }
 * };
 * x = null; // Hint to the JIT that x is stack-unreachable
 * GcFinalization.await(latch);
 * }
 *

    }

    /**
     * Finalizes and removes the preauth integrity context for a session.
     *
     * @param sessionId the session identifier
     */
    public void finalizeSession(String sessionId) {
        PreauthIntegrityContext context = sessionContexts.remove(sessionId);
        if (context != null) {
            context.invalidate();

## Código assíncrono { #asynchronous-code }

Código assíncrono apenas significa que a linguagem 💬 tem um jeito de dizer para o computador / programa 🤖 que em certo ponto do código, ele 🤖 terá que esperar *algo* finalizar em outro lugar. Vamos dizer que esse *algo* seja chamado "arquivo lento" 📝.

Então, durante esse tempo, o computador pode ir e fazer outro trabalho, enquanto o "arquivo lento" 📝 termina.

        state["/async_raise"] = "asyncgen raise finalized"


def generator_state_try(state: dict[str, str] = Depends(get_state)):
    state["/sync_raise"] = "generator raise started"
    try:
        yield state["/sync_raise"]
    except SyncDependencyError:
        errors.append("/sync_raise")
        raise
    finally:
        state["/sync_raise"] = "generator raise finalized"

    }

    @Test
    @DisplayName("finalize() logs a warning when not closed (no exception)")
    void finalize_logsWhenNotClosed() throws Throwable {
        when(cfg.isTraceResourceUsage()).thenReturn(true); // exercise backtrace branch
        stubValidTree(2L, true, true);
        SmbFileHandleImpl h = new SmbFileHandleImpl(cfg, 1, tree, "//host/share", 0, 0, 0, 0, 0L);
        // Calling finalize directly to execute the logic; should not throw

            this.treeConnection.release();
        } else if (us < 0) {
            throw new RuntimeCIFSException("Usage count dropped below zero");
        }
    }

    @Override
    protected void finalize() throws Throwable {
        try {
            // Add null check to prevent NPE if object was not fully constructed
            if (this.usageCount != null && this.usageCount.get() != 0) {