func (ping) Name() string {
	return "ping"
}

// PingHealthz is a health check that returns true.
func (ping) Check(_ *http.Request) error {
	return nil
}

// LogHealthz returns true if logging is not blocked
var LogHealthz HealthChecker = &log{}

type log struct {
	startOnce    sync.Once
	lastVerified atomic.Value
}

func (l *log) Name() string {
	return "log"
}

// Goroutine preemption
//
// A goroutine can be preempted at any safe-point. Currently, there
// are a few categories of safe-points:
//
// 1. A blocked safe-point occurs for the duration that a goroutine is
//    descheduled, blocked on synchronization, or in a system call.
//
// 2. Synchronous safe-points occur when a running goroutine checks
//    for a preemption request.
//

    ) {
        this.userInput = userInput;
        // Use a single reader thread, and make it a daemon thread so that it does not block process shutdown
        // In most cases, we try to cleanly shut down all threads. However, in this case it is difficult to disconnect a thread blocked trying to read from the
        // process' stdin, so use a daemon thread instead.
        executor = Executors.newSingleThreadExecutor(r -> {

	EvGoBlockCond       = 26 // goroutine blocks on Cond [timestamp, stack]
	EvGoBlockNet        = 27 // goroutine blocks on network [timestamp, stack]
	EvGoSysCall         = 28 // syscall enter [timestamp, stack]
	EvGoSysExit         = 29 // syscall exit [timestamp, goroutine id, seq, real timestamp]
	EvGoSysBlock        = 30 // syscall blocks [timestamp]
	EvGoWaiting         = 31 // denotes that goroutine is blocked when tracing starts [timestamp, goroutine id]

     * the locks upon completion.  Blocks until the specified locks can be obtained.
     */
    <T> T withLocks(Collection<? extends ResourceLock> locks, Factory<T> factory);

    /**
     * Runs a given {@link Runnable} while the specified locks are being held, releasing
     * the locks upon completion.  Blocks until the specified locks can be obtained.
     */

	f.freeValues = v
}

// NewBlock allocates a new Block of the given kind and places it at the end of f.Blocks.
func (f *Func) NewBlock(kind BlockKind) *Block {
	var b *Block
	if f.freeBlocks != nil {
		b = f.freeBlocks
		f.freeBlocks = b.succstorage[0].b
		b.succstorage[0].b = nil
	} else {
		ID := f.bid.get()
		if int(ID) < len(f.Cache.blocks) {
			b = &f.Cache.blocks[ID]
			b.ID = ID
		} else {

     *
     * <p>This method is re-entrant, so that an action can call back into this method.</p>
     *
     * <p>Note: this method differs from {@link #withFileLock(Supplier)} in that this method also blocks other threads from this process and all threads from other processes from accessing the cache.</p>
     */
    <T> T useCache(Supplier<? extends T> action);

    /**

        with:
          payload: |
            {
              "text": "<https://github.com/gradle/gradle/${{ github.event.ref }}|[gradle/gradle#${{ github.event.ref }}]> has been pushed",
              "blocks": [
                {
                  "type": "section",
                  "text": {
                    "type": "mrkdwn",

//   - Regular IPv6: 1111:2222:3333:4444:5555:6666:7777:8888
//   - IPv6 with many leading zeros: 00000001:0000002:0000003:0000004:0000005:0000006:0000007:0000008
//   - IPv6 with zero blocks elided: 1111:2222::7777:8888
//   - IPv6 with trailing 32 bits expressed as IPv4: 1111:2222:3333:4444:5555:6666:77.77.88.88
//
// It does not process the following IP address forms, which have been

	})
}

// quicWaitForSignal notifies the QUICConn that handshake progress is blocked,
// and waits for a signal that the handshake should proceed.
//
// The handshake may become blocked waiting for handshake bytes
// or for the user to provide transport parameters.
func (c *Conn) quicWaitForSignal() error {
	// Drop the handshake mutex while blocked to allow the user
	// to call ConnectionState before the handshake completes.