testCrashHandler(t, false)
}

func testDeadlock(t *testing.T, name string) {
	// External linking brings in cgo, causing deadlock detection not working.
	testenv.MustInternalLink(t, false)

	output := runTestProg(t, "testprog", name)
	want := "fatal error: all goroutines are asleep - deadlock!\n"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

	mp := acquirem()
	pp := mp.p.ptr()
	if len(pp.deferpool) == 0 && sched.deferpool != nil {
		lock(&sched.deferlock)
		for len(pp.deferpool) < cap(pp.deferpool)/2 && sched.deferpool != nil {
			d := sched.deferpool
			sched.deferpool = d.link
			d.link = nil
			pp.deferpool = append(pp.deferpool, d)
		}
		unlock(&sched.deferlock)
	}
	if n := len(pp.deferpool); n > 0 {
		d = pp.deferpool[n-1]
		pp.deferpool[n-1] = nil

// the current M (if any) must be in a preemptible state. This
// prevents deadlocks where two goroutines attempt to suspend each
// other and both are in non-preemptible states. There are other ways
// to resolve this deadlock, but this seems simplest.
//
// TODO(austin): What if we instead required this to be called from a
// user goroutine? Then we could deschedule the goroutine while

    def lockfileFixture = new LockfileFixture(testDirectory: testDirectory)
    ResolveTestFixture resolve

    def setup() {
        settingsFile << "rootProject.name = 'depLock'"
        resolve = new ResolveTestFixture(buildFile, "lockedConf")
        resolve.prepare()
        resolve.addDefaultVariantDerivationStrategy()
    }

    abstract LockMode lockMode()

			// 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")
	}

                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) {

                        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),

    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`.
 *

        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()