const rwmutexMaxReaders = 1 << 30

// rlock locks rw for reading.
func (rw *rwmutex) rlock() {
	// The reader must not be allowed to lose its P or else other
	// things blocking on the lock may consume all of the Ps and
	// deadlock (issue #20903). Alternatively, we could drop the P
	// while sleeping.
	acquireLockRankAndM(rw.readRank)
	lockWithRankMayAcquire(&rw.rLock, getLockRank(&rw.rLock))

	if rw.readerCount.Add(1) < 0 {

			// CreateThread may fail if called
			// concurrently with ExitProcess. If this
			// happens, just freeze this thread and let
			// the process exit. See issue #18253.
			lock(&deadlock)
			lock(&deadlock)
		}
		print("runtime: failed to create new OS thread (have ", mcount(), " already; errno=", getlasterror(), ")\n")
		throw("runtime.newosproc")
	}

		// scheduler state, so we didn't gcstopm in findRunnable, but
		// also don't want to allow new goroutines to run.
		//
		// Deadlock here rather than in the findRunnable loop so if
		// findRunnable is stuck in a loop we don't perturb that
		// either.
		lock(&deadlock)
		lock(&deadlock)
	}

	// This thread is going to run a goroutine and is not spinning anymore,

    /**
     * Runs the given action and disallows the current thread from attempting to acquire or release any project locks.
     * Applying this constraint means that the thread will not block waiting for a project lock and cause a deadlock.
     * This constraint also means that it does not need to release its project locks when it needs to block while waiting for some operation to complete.
     *

                        // block waiting for access to some other project, which means it can proceed even if some other thread is waiting for a project lock it
                        // holds without causing a deadlock. This in turn implies that this thread does not need to release the project locks it holds while

                requestCompleted(outcome);
            }
        } finally {
            httpExchange.close();
        }
    }

    // Dump all JVMs' threads on the machine to troubleshoot deadlock issues
    // We observed jstack hanging on windows, so for now we only enable it for Linux
    private void dumpThreadsUponTimeout(String stacktrace) {

	tlsConn := Server(conn, &Config{
		GetCertificate: func(*ClientHelloInfo) (*Certificate, error) {
			panic("unreachable")
		},
	})
	conn.tlsConn = tlsConn

	// This call should not deadlock.
	tlsConn.Close()
}

func TestRecordBadVersionTLS13(t *testing.T) {
	client, server := localPipe(t)
	defer server.Close()
	defer client.Close()

	config := testConfig.Clone()

}

func lock(l *mutex) {
	lockWithRank(l, getLockRank(l))
}

func lock2(l *mutex) {
	if l.key == mutex_locked {
		// js/wasm is single-threaded so we should never
		// observe this.
		throw("self deadlock")
	}
	gp := getg()
	if gp.m.locks < 0 {
		throw("lock count")
	}
	gp.m.locks++
	l.key = mutex_locked
}

func unlock(l *mutex) {
	unlockWithRank(l)
}

func unlock2(l *mutex) {

		stopf := context.AfterFunc(ctx, func() {
			// We need to acquire cond.L here to be sure that the Broadcast
			// below won't occur before the call to Wait, which would result
			// in a missed signal (and deadlock).
			cond.L.Lock()
			defer cond.L.Unlock()

			// If multiple goroutines are waiting on cond simultaneously,
			// we need to make sure we wake up exactly this one.

	{44, "EL2HLT", "level 2 halted"},
	{45, "EDEADLK", "resource deadlock avoided"},
	{46, "ENOLCK", "no locks available"},
	{50, "EBADE", "invalid exchange"},
	{51, "EBADR", "invalid request descriptor"},
	{52, "EXFULL", "exchange full"},
	{53, "ENOANO", "no anode"},
	{54, "EBADRQC", "invalid request code"},
	{55, "EBADSLT", "invalid slot"},
	{56, "EDEADLOCK", "file locking deadlock error"},
	{59, "EBFONT", "bad font file format"},