// a goroutine that will attempt to reconnect if HealthCheckFn is set.
// returns true if the node changed state from online to offline
func (c *Client) MarkOffline(err error) bool {
	c.Lock()
	c.lastErr = err
	c.lastErrTime = time.Now()
	atomic.StoreInt64(&c.lastConn, time.Now().UnixNano())
	c.Unlock()

	return c.runHealthCheck()

	<-reqStarted

	// Block until we have exceeded the deadline several times over.
	nowBlocking := make(chan struct{})
	var mu sync.Mutex
	time.AfterFunc(time.Second, func() {
		mu.Lock()
		cancel()
		close(nowBlocking)
		mu.Unlock()
	})
	if inCap > 0 {
		go func() {
			defer close(st.Requests)
			if !blockReq {
				<-nowBlocking
				return
			}
			for {

#### PushContext

`PushContext` is an immutable snapshot of the current state of the world. It is regenerated (usually partially) on each configuration push (more on this below). Due to being a snapshot, most lookups are lock-free.

        Exception ex0 = null;

        try {
            /*
             * We cannot synchronize (run_thread) here or the caller's
             * thread.wait( timeout ) cannot reaquire the lock and
             * return which would render the timeout effectively useless.
             */
            if ( this.state != 5 && this.state != 6 ) {
                doConnect();
            }
        }

	}
}

// LockAndSetBuckets - locks the buckets and sets the given buckets. It returns
// a function to unlock the buckets.
func (mg *MetricsGroup) LockAndSetBuckets(buckets []string) func() {
	mg.bucketsLock.Lock()
	mg.buckets = buckets
	return func() {
		mg.bucketsLock.Unlock()
	}
}

// MetricFQN - returns the fully qualified name for the given metric name.

init: $(TARGET_OUT)/istio_is_init init-ztunnel-rs
	@mkdir -p ${TARGET_OUT}/logs
	@mkdir -p ${TARGET_OUT}/release

# I tried to make this dependent on what I thought was the appropriate
# lock file, but it caused the rule for that file to get run (which
# seems to be about obtaining a new version of the 3rd party libraries).
$(TARGET_OUT)/istio_is_init: bin/init.sh istio.deps | $(TARGET_OUT)

// Eliminate non-compressible objects by extensions/content-types.
func isCompressible(header http.Header, object string) bool {
	globalCompressConfigMu.Lock()
	cfg := globalCompressConfig
	globalCompressConfigMu.Unlock()

	return !excludeForCompression(header, object, cfg)
}

// Eliminate the non-compressible objects.

				Delete(context.Background(), name, metav1.DeleteOptions{}); err != nil {
				if kerrors.IsNotFound(err) {
					fmt.Fprintf(cmd.OutOrStdout(), "waypoint %v/%v not found\n", namespace, name)
				} else {
					mu.Lock()
					multiErr = multierror.Append(multiErr, err)
					mu.Unlock()
				}
			} else {
				fmt.Fprintf(cmd.OutOrStdout(), "waypoint %v/%v deleted\n", namespace, name)
			}
		}(name)
	}

	wg.Wait()

            url = "file://" + url.substring("file:".length());
        }

        // So now we have an url of the form file://<path>

        // We want to eliminate any relative path nonsense and lock down the path so we
        // need to fully resolve it before any submodules use the path. This can happen
        // when you are using a custom settings.xml that contains a relative path entry

* Make addon-manager cross-platform and use it with hyperkube ([#25631](https://github.com/kubernetes/kubernetes/pull/25631), [@luxas](https://github.com/luxas))
* kubelet: Optionally, have kubelet exit if lock file contention is observed, using --exit-on-lock-contention flag ([#25596](https://github.com/kubernetes/kubernetes/pull/25596), [@derekparker](https://github.com/derekparker))