//
// 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)

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;

     * <p>
     * The key is based on the given expanded directory used to extract the archive file.
     *
     * @param expandedDir The directory in use for the action
     * @param action The action to run while the cache is held for the given key
     */
    void exclusiveAccessTo(File expandedDir, Runnable action);

     */
    void store(BuildCacheKey key, BuildCacheEntryWriter writer) throws BuildCacheException;

    /**
     * Clean up any resources held by the cache once it's not used anymore.
     *
     * @throws IOException if the cache fails to close cleanly.
     */
    @Override
    void close() throws IOException;

	// A lock for writing is needed
	// for writing to any of the following:
	// - the flowSchemas field
	// - the slice held in the flowSchemas field
	// - the priorityLevelStates field
	// - the map held in the priorityLevelStates field
	// - any field of a priorityLevelState held in that map
	lock sync.RWMutex

	// flowSchemas holds the flow schema objects, sorted by increasing

func labelValue(ctx context.Context) labelMap {
	labels, _ := ctx.Value(labelContextKey{}).(*labelMap)
	if labels == nil {
		return labelMap(nil)
	}
	return *labels
}

// labelMap is the representation of the label set held in the context type.
// This is an initial implementation, but it will be replaced with something
// that admits incremental immutable modification more efficiently.
type labelMap map[string]string

	// Try directly allocating from the current head arena.
	head := (*gcBitsArena)(atomic.Loadp(unsafe.Pointer(&gcBitsArenas.next)))
	if p := head.tryAlloc(bytesNeeded); p != nil {
		return p
	}

	// There's not enough room in the head arena. We may need to
	// allocate a new arena.
	lock(&gcBitsArenas.lock)
	// Try the head arena again, since it may have changed. Now
	// that we hold the lock, the list head can't change, but its

  override fun clone(): Call = RealCall(client, originalRequest, forWebSocket)

  override fun request(): Request = originalRequest

  /**
   * Immediately closes the socket connection if it's currently held. Use this to interrupt an
   * in-flight request from any thread. It's the caller's responsibility to close the request body
   * and response body streams; otherwise resources may be leaked.
   *

	// concurrent access (with or without mu held).
	//
	// The read field itself is always safe to load, but must only be stored with
	// mu held.
	//
	// Entries stored in read may be updated concurrently without mu, but updating
	// a previously-expunged entry requires that the entry be copied to the dirty
	// map and unexpunged with mu held.
	read atomic.Pointer[readOnly]

            it.write(cw.toByteArray())
        }

        contents.zipTo(jar)
    }

    private Class loadClassFromJar(TestFile jar) {
        // This is to prevent the jar file being held open
        URL url = new URL("jar:file://valid_jar_url_syntax.jar!/")
        URLConnection urlConnection = url.openConnection()
        def original = urlConnection.getDefaultUseCaches()