type cbc struct {
	b  *aesCipherAsm
	c  code
	iv [BlockSize]byte
}

func (b *aesCipherAsm) NewCBCEncrypter(iv []byte) cipher.BlockMode {
	var c cbc
	c.b = b
	c.c = b.function
	copy(c.iv[:], iv)
	return &c
}

func (b *aesCipherAsm) NewCBCDecrypter(iv []byte) cipher.BlockMode {
	var c cbc
	c.b = b
	c.c = b.function + 128 // decrypt function code is encrypt + 128
	copy(c.iv[:], iv)
	return &c
}

    private FileLockManager.LockMode mode;
    private boolean crossVersion;

    private DefaultLockOptions(FileLockManager.LockMode mode, boolean crossVersion) {
        this.mode = mode;
        this.crossVersion = crossVersion;
    }

    public static DefaultLockOptions mode(FileLockManager.LockMode lockMode) {
        return new DefaultLockOptions(lockMode, false);
    }

    def initAction = Mock(CacheInitializationAction)
    def onOpenAction = Mock(Consumer)
    def onCloseAction = Mock(Consumer)
    def lockOptions = DefaultLockOptions.mode(FileLockManager.LockMode.Shared)
    def cacheAccess = new FixedSharedModeCrossProcessCacheAccess("<cache>", file, lockOptions, lockManager, initAction, onOpenAction, onCloseAction)

type cbc struct {
	b   *aesCipherAsm
	enc int
	iv  [BlockSize]byte
}

func (b *aesCipherAsm) NewCBCEncrypter(iv []byte) cipher.BlockMode {
	var c cbc
	c.b = b
	c.enc = cbcEncrypt
	copy(c.iv[:], iv)
	return &c
}

func (b *aesCipherAsm) NewCBCDecrypter(iv []byte) cipher.BlockMode {
	var c cbc
	c.b = b
	c.enc = cbcDecrypt
	copy(c.iv[:], iv)
	return &c
}

func (x *cbc) BlockSize() int { return BlockSize }

         */
        private LockState lock(LockMode lockMode) throws Throwable {
            LOGGER.debug("Waiting to acquire {} lock on {}.", lockMode.toString().toLowerCase(Locale.ROOT), displayName);

            // Lock the state region, with the requested mode
            FileLockOutcome lockOutcome = lockStateRegion(lockMode);
            if (!lockOutcome.isLockWasAcquired()) {

        partialUpdate = !lockedDependenciesToUpdate.isEmpty();
        updateLockEntryFilter = LockEntryFilterFactory.forParameter(lockedDependenciesToUpdate, "Update lock", true);
        lockMode = propertyFactory.property(LockMode.class);
        lockMode.convention(LockMode.DEFAULT);
        lockFile = filePropertyFactory.newFileProperty();
        ignoredDependencies = propertyFactory.listProperty(String.class);

        expect:
        emptyDir.assertDoesNotExist()

        when:
        def cache = new DefaultPersistentDirectoryCache(emptyDir, "<display-name>", properties, mode(FileLockManager.LockMode.Shared), initializationAction, cacheCleanup, lockManager, Mock(ExecutorFactory), buildOperationRunner)
        try {
            cache.open()
        } finally {
            cache.close()
        }

        then:

import java.util.function.Consumer
import java.util.function.Supplier

import static org.gradle.cache.FileLockManager.LockMode.Exclusive
import static org.gradle.cache.FileLockManager.LockMode.None
import static org.gradle.cache.FileLockManager.LockMode.OnDemand
import static org.gradle.cache.FileLockManager.LockMode.Shared
import static org.gradle.cache.internal.filelock.DefaultLockOptions.mode

// have different lengths and still not have any inexact overlap.
//
// InexactOverlap can be used to implement the requirements of the crypto/cipher
// AEAD, Block, BlockMode and Stream interfaces.
func InexactOverlap(x, y []byte) bool {
	if len(x) == 0 || len(y) == 0 || &x[0] == &y[0] {
		return false
	}
	return AnyOverlap(x, y)

     * </p>
     * <ul>
     *     <li>Using {@link org.gradle.cache.FileLockManager.LockMode#Exclusive} will lock the cache on open() in the exclusive mode and keep it locked until {@link PersistentCache#close()} is called.</li>