n := 16
	wg1.Add(n)
	wg2.Add(n)
	exited := make(chan bool, n)
	for i := 0; i != n; i++ {
		go func() {
			wg1.Done()
			wg2.Wait()
			exited <- true
		}()
	}
	wg1.Wait()
	for i := 0; i != n; i++ {
		select {
		case <-exited:
			t.Fatal("WaitGroup released group too soon")
		default:
		}
		wg2.Done()
	}
	for i := 0; i != n; i++ {
		<-exited // Will block if barrier fails to unlock someone.
	}

	status syscall.WaitStatus // System-dependent status info.
	rusage *syscall.Rusage
}

// Pid returns the process id of the exited process.
func (p *ProcessState) Pid() int {
	return p.pid
}

func (p *ProcessState) exited() bool {
	return p.status.Exited()
}

func (p *ProcessState) success() bool {
	return p.status.ExitStatus() == 0
}

func (p *ProcessState) sys() any {
	return p.status

                </mxCell>
                <mxCell id="8" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;strokeWidth=3;exitX=0.092;exitY=1.01;exitDx=0;exitDy=0;dashed=1;exitPerimeter=0;" parent="1" edge="1">
                    <mxGeometry relative="1" as="geometry">
                        <Array as="points">
                            <mxPoint x="800" y="521"/>

import com.google.common.util.concurrent.UncaughtExceptionHandlers.Exiter;
import junit.framework.TestCase;

/** @author Gregory Kick */
public class UncaughtExceptionHandlersTest extends TestCase {

  private Runtime runtimeMock;

  @Override
  protected void setUp() {
    runtimeMock = mock(Runtime.class);
  }

  public void testExiter() {
    new Exiter(runtimeMock).uncaughtException(new Thread(), new Exception());

 */
public interface ExecResult {
    /**
     * Returns the exit value of the process.
     */
    int getExitValue();

    /**
     * Throws an {@link org.gradle.process.internal.ExecException} if the process exited with a non-zero exit value.
     *
     * @return this
     * @throws ExecException if the process exited with a non-zero exit value
     */
    ExecResult assertNormalExitValue() throws ExecException;

import com.google.common.util.concurrent.UncaughtExceptionHandlers.Exiter;
import junit.framework.TestCase;

/** @author Gregory Kick */
public class UncaughtExceptionHandlersTest extends TestCase {

  private Runtime runtimeMock;

  @Override
  protected void setUp() {
    runtimeMock = mock(Runtime.class);
  }

  public void testExiter() {
    new Exiter(runtimeMock).uncaughtException(new Thread(), new Exception());

// For best code generation, RF_DONE and RF_READY should be 0 and 1.
const (
	RF_DONE          = RF_State(iota) // body of loop has exited in a non-panic way
	RF_READY                          // body of loop has not exited yet, is not running  -- this is not a panic index
	RF_PANIC                          // body of loop is either currently running, or has panicked

    ExecResult waitForStop();

    /**
     * Returns the result of the process, if it has exited.  If the process has not exited yet, returns {@link Optional#empty()}.
     */
    Optional<ExecResult> getExecResult();

    JvmMemoryStatus getJvmMemoryStatus();

    /**
     * Stop the associated process without expecting a normal exit value.
     */
    void stopNow();

	return nil, nil
}

type fakeExitError struct {
	exited     bool
	statusCode int
}

func (f *fakeExitError) String() string {
	return f.Error()
}

func (f *fakeExitError) Error() string {
	return "fake exit"
}

func (f *fakeExitError) Exited() bool {
	return f.exited
}

func (f *fakeExitError) ExitStatus() int {
	return f.statusCode
}

```sh
docker ps -a
```

`-a` flag makes sure you get all the containers (Created, Running, Exited). Then identify the `Container ID` from the output.

### Starting and Stopping Containers

To start a stopped container, you can use the [`docker start`](https://docs.docker.com/engine/reference/commandline/start/) command.