func (sys *BucketTargetSys) markOffline(ep *url.URL) {
	sys.hMutex.Lock()
	defer sys.hMutex.Unlock()
	if h, ok := sys.hc[ep.Host]; ok {
		h.Online = false
		sys.hc[ep.Host] = h
	}
}

func (sys *BucketTargetSys) initHC(ep *url.URL) {
	sys.hMutex.Lock()
	sys.hc[ep.Host] = epHealth{
		Endpoint: ep.Host,
		Scheme:   ep.Scheme,
		Online:   true,
	}

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package lock

import (
	"os"
	"syscall"
)

// Internal function implements support for both
// blocking and non blocking lock type.
func lockedOpenFile(path string, flag int, perm os.FileMode, lockType int) (*LockedFile, error) {
	switch flag {
	case syscall.O_RDONLY:

 * test with reference to the same "lock-like object", and then their interactions with that object
 * are choreographed via the various methods on this class.
 *
 * <p>A "lock-like object" is really any object that may be used for concurrency control. If the
 * {@link #callAndAssertBlocks} method is ever called in a test, the lock-like object must have a

func (m *metacacheManager) deleteBucketCache(bucket string) {
	m.init.Do(m.initManager)
	m.mu.Lock()
	b, ok := m.buckets[bucket]
	if !ok {
		m.mu.Unlock()
		return
	}
	delete(m.buckets, bucket)
	m.mu.Unlock()

	// Since deletes may take some time we try to do it without
	// holding lock to m all the time.
	b.mu.Lock()
	defer b.mu.Unlock()
	for k, v := range b.caches {

@NullMarked
public class TestLogHandler extends Handler {
  private final Object lock = new Object();

  /** We will keep a private list of all logged records */
  @GuardedBy("lock")
  private final List<LogRecord> list = new ArrayList<>();

  /** Adds the most recently logged record to our list. */
  @Override
  public void publish(@Nullable LogRecord record) {
    synchronized (lock) {
      if (record != null) {
        list.add(record);
      }

  }

  /**
   * Invokes {@code lock.}{@link Lock#tryLock(long, TimeUnit) tryLock(timeout, unit)}
   * uninterruptibly.
   *
   * @since 30.0
   */
  @J2ktIncompatible
  @GwtIncompatible // concurrency
  @SuppressWarnings("GoodTime") // should accept a java.time.Duration
  public static boolean tryLockUninterruptibly(Lock lock, long timeout, TimeUnit unit) {

	sys.Lock()
	for _, bucket := range buckets {
		sys.group.Forget(bucket)
		delete(sys.metadataMap, bucket)
		globalBucketMonitor.DeleteBucket(bucket)
	}
	sys.Unlock()
}

// RemoveStaleBuckets removes all stale buckets in memory that are not on disk.
func (sys *BucketMetadataSys) RemoveStaleBuckets(diskBuckets set.StringSet) {
	sys.Lock()
	defer sys.Unlock()

@GwtCompatible
@NullMarked
public class TearDownStack implements TearDownAccepter {
  private static final Logger logger = Logger.getLogger(TearDownStack.class.getName());

  @VisibleForTesting final Object lock = new Object();

  @GuardedBy("lock")
  final Deque<TearDown> stack = new ArrayDeque<>();

  private final boolean suppressThrows;

  public TearDownStack() {
    this.suppressThrows = false;
  }

@GwtCompatible
@NullMarked
public class TearDownStack implements TearDownAccepter {
  private static final Logger logger = Logger.getLogger(TearDownStack.class.getName());

  @VisibleForTesting final Object lock = new Object();

  @GuardedBy("lock")
  final Deque<TearDown> stack = new ArrayDeque<>();

  private final boolean suppressThrows;

  public TearDownStack() {
    this.suppressThrows = false;
  }

        <!-- For tests only. Must be in compile scope such that the Teamcity generate goal is able to compile the tests -->
        <dependency>
            <groupId>io.mockk</groupId>
            <artifactId>mockk-jvm</artifactId>
            <version>${mockk.version}</version>
        </dependency>
        <dependency>
            <groupId>net.bytebuddy</groupId>
            <artifactId>byte-buddy</artifactId>