lock(&sched.deferlock)
	// disconnect cached list before dropping it on the floor,
	// so that a dangling ref to one entry does not pin all of them.
	var d, dlink *_defer
	for d = sched.deferpool; d != nil; d = dlink {
		dlink = d.link
		d.link = nil
	}
	sched.deferpool = nil
	unlock(&sched.deferlock)
}

// Timing

                        const int in_flight_nodes_limit)
      : status_(TF_NewStatus()),
        // If the context's default exector is set to async, re-using that in
        // each thread would cause collectives to deadlock. For consistency we
        // create a new sync executor for every thread.
        //
        // TODO(allenl): We should have an async API that works with the
        // parallel device.
        device_(device),

	if mp.waitsema != 0 {
		return
	}

	var sem *semt

	// Call libc's malloc rather than malloc. This will
	// allocate space on the C heap. We can't call mallocgc
	// here because it could cause a deadlock.
	sem = (*semt)(malloc(unsafe.Sizeof(*sem)))
	if sem_init(sem, 0, 0) != 0 {
		throw("sem_init")
	}
	mp.waitsema = uintptr(unsafe.Pointer(sem))
}

//go:nosplit
func semasleep(ns int64) int32 {

    reason: UnregisterNetDevice
    status: "False"
    type: FrequentUnregisterNetDevice
  - lastHeartbeatTime: "2019-09-20T19:32:08Z"
    lastTransitionTime: "2019-07-09T16:17:04Z"
    message: kernel has no deadlock
    reason: KernelHasNoDeadlock
    status: "False"
    type: KernelDeadlock
  - lastHeartbeatTime: "2019-09-20T19:32:08Z"
    lastTransitionTime: "2019-07-09T16:17:04Z"
    message: Filesystem is not read-only

 *
 * Used to print all JVMs' thread dumps on the machine. When it starts working, the process/machine might be in a bad state (e.g. deadlock),
 * So we don't want it to depend on any third-party libraries. It's executed directly via `java JavaProcessStackTracesMonitor` in `PrintStackTracesOnTimeoutBuildService`.
 *

			gnext = next.ptr()
			break
		}
	}

	// Check if we're switching to ourselves. This case is able to break our
	// thread-lock invariants and an unbuffered channel implementation of
	// coroswitch would deadlock. It's clear that this case should just not
	// work.
	if gnext == gp {
		throw("coroswitch of a goroutine to itself")
	}

	// Emit the trace event after getting gnext but before changing curg.

	{31, "EMLINK", "too many links"},
	{32, "EPIPE", "broken pipe"},
	{33, "EDOM", "numerical argument out of domain"},
	{34, "ERANGE", "numerical result out of range"},
	{35, "EDEADLK", "resource deadlock avoided"},
	{36, "ENAMETOOLONG", "file name too long"},
	{37, "ENOLCK", "no locks available"},
	{38, "ENOSYS", "function not implemented"},
	{39, "ENOTEMPTY", "directory not empty"},

        expect:
        executer.withArguments('--max-workers', '4')
        succeeds("resolve")
    }

    @Issue("gradle/gradle#2415")
    def "should not deadlock when downloading parent pom concurrently with a top-level dependency"() {
        given:
        def child1 = mavenRepo.module("org", "child1", "1.0")
        child1.parent("org", "parent1", "1.0")
        child1.publish()

	lockRankGlobalAlloc:     "globalAlloc",
	lockRankTrace:           "trace",
	lockRankTraceStackTab:   "traceStackTab",
	lockRankPanic:           "panic",
	lockRankDeadlock:        "deadlock",
	lockRankRaceFini:        "raceFini",
	lockRankAllocmRInternal: "allocmRInternal",
	lockRankExecRInternal:   "execRInternal",
	lockRankTestRInternal:   "testRInternal",
}

	{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"},