* Attempt to lock this resource, if not already.  Does not block.
     *
     * @return true if resource is now locked, false otherwise.
     */
    boolean tryLock();

    /**
     * Unlock this resource if it's held by the calling thread.
     */
    void unlock();

   * request bodies.
   */
  open fun peek(): MockResponse {
    return MockResponse(socketPolicy = KeepOpen)
  }

  /**
   * Release any resources held by this dispatcher. Any requests that are currently being dispatched
   * should return immediately. Responses returned after shutdown will not be transmitted: their
   * socket connections have already been closed.
   */

import okhttp3.Request

interface EventSource {
  /** Returns the original request that initiated this event source. */
  fun request(): Request

  /**
   * Immediately and violently release resources held by this event source. This does nothing if
   * the event source has already been closed or canceled.
   */
  fun cancel()

  fun interface Factory {
    /**

	traceWriter
	exp traceExperiment
}

// unsafeTraceExpWriter produces a traceExpWriter that doesn't lock the trace.
//
// It should only be used in contexts where either:
// - Another traceLocker is held.
// - trace.gen is prevented from advancing.
//
// buf may be nil.
func unsafeTraceExpWriter(gen uintptr, buf *traceBuf, exp traceExperiment) traceExpWriter {

     */
    void notifyStateChange();

    void assertHasStateLock();

    /**
     * Adds a listener that is notified when a lock is released. Called while the state lock is held.
     */
    void addLockReleaseListener(Action<ResourceLock> listener);

    void removeLockReleaseListener(Action<ResourceLock> listener);

//
// Returns a 0 base address on failure, in which case other returned values
// should be ignored.
//
// p.mheapLock must be held.
//
// Must run on the system stack because p.mheapLock must be held.
//
//go:systemstack
func (p *pageAlloc) alloc(npages uintptr) (addr uintptr, scav uintptr) {
	assertLockHeld(p.mheapLock)

	if err != nil {
		t.Fatal(err)
	}

	cmd := exec.Command(exe)
	cmd.Env = append(cmd.Environ(), "TEST_TIMEOUT_HANG=1")

	// Hold stdin open until this (parent) process exits.
	if _, err := cmd.StdinPipe(); err != nil {
		t.Fatal(err)
	}

	// Forward stderr to the subprocess so that it can hold the stream open.
	cmd.Stderr = os.Stderr

	if err := cmd.Start(); err != nil {
		t.Fatal(err)
	}
	t.Logf("started %v", cmd)

  /** Returns the trailers after the HTTP response. May be empty. */
  @Throws(IOException::class)
  fun trailers(): Headers

  /**
   * Cancel this stream. Resources held by this stream will be cleaned up, though not synchronously.
   * That may happen later by the connection pool thread.
   */
  fun cancel()

  /**

 * invoke methods, they invoke methods on the {@code ForwardingBlockingQueue}.
 *
 * @author Raimundo Mirisola
 * @param <E> the type of elements held in this collection
 * @since 4.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public abstract class ForwardingBlockingQueue<E> extends ForwardingQueue<E>
    implements BlockingQueue<E> {

import java.util.function.Supplier;

import static org.gradle.cache.FileLockManager.LockMode.Exclusive;

/**
 * A {@link CrossProcessCacheAccess} implementation used when a cache is opened with an exclusive lock that is held until the cache is closed. This implementation is simply a no-op for these methods.
 */
public class FixedExclusiveModeCrossProcessCacheAccess extends AbstractCrossProcessCacheAccess {
    private final String cacheDisplayName;