ReentrantLock lockD = otherFactory.newReentrantLock("LockD");

    // lockD -> lockA
    lockD.lock();
    lockA.lock();
    lockA.unlock();
    lockD.unlock();

    // lockA -> lockD should warn but otherwise succeed because lockD was
    // created by a factory with the WARN policy.
    lockA.lock();
    lockD.lock();
  }

  private Lock[] plainLocks;
  private Lock[] detectingLocks;

  @BeforeExperiment
  void setUp() throws Exception {
    this.factory = CycleDetectingLockFactory.newInstance(CycleDetectingLockFactory.Policies.WARN);
    this.plainLocks = new Lock[lockNestingDepth];
    for (int i = 0; i < lockNestingDepth; i++) {
      plainLocks[i] = new ReentrantLock();
    }
    this.detectingLocks = new Lock[lockNestingDepth];

          distribution: 'zulu'
          cache: 'maven'
      - name: 'Install'
        shell: bash
        run: ./mvnw -B -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn install -U -DskipTests=true -f $ROOT_POM
      - name: 'Test'
        shell: bash
        run: ./mvnw -B -P!standard-with-extra-repos verify -U -Dmaven.javadoc.skip=true -f $ROOT_POM
      - name: 'Print Surefire reports'

    ReentrantLock lockD = otherFactory.newReentrantLock("LockD");

    // lockD -> lockA
    lockD.lock();
    lockA.lock();
    lockA.unlock();
    lockD.unlock();

    // lockA -> lockD should warn but otherwise succeed because lockD was
    // created by a factory with the WARN policy.
    lockA.lock();
    lockD.lock();
  }

    much more.

    This project includes GWT-friendly sources.
  </description>
  <properties>
    <gwt.version>2.11.0</gwt.version>
    <gwt.plugin.version>2.10.0</gwt.plugin.version>
    <gwt.logLevel>WARN</gwt.logLevel>
  </properties>
  <repositories>
    <repository>
      <id>sonatype-google-snapshots</id>
      <name>sonatype-google-snapshots</name>

  private Lock[] plainLocks;
  private Lock[] detectingLocks;

  @BeforeExperiment
  void setUp() throws Exception {
    this.factory = CycleDetectingLockFactory.newInstance(CycleDetectingLockFactory.Policies.WARN);
    this.plainLocks = new Lock[lockNestingDepth];
    for (int i = 0; i < lockNestingDepth; i++) {
      plainLocks[i] = new ReentrantLock();
    }
    this.detectingLocks = new Lock[lockNestingDepth];

 * {@code tryLock()} methods will result in the execution of the {@link Policy} specified when
 * creating the factory. The currently available policies are:
 *
 * <ul>
 *   <li>DISABLED
 *   <li>WARN
 *   <li>THROW
 * </ul>
 *
 * <p>The locks created by a factory instance will detect lock acquisition cycles with locks created

package com.google.common.collect;

import com.google.common.annotations.GwtCompatible;
import java.util.Collection;

/**
 * Implementation of {@link ImmutableListMultimap} with no entries.
 *
 * @author Mike Ward
 */
@GwtCompatible(serializable = true)
@ElementTypesAreNonnullByDefault
class EmptyImmutableSetMultimap extends ImmutableSetMultimap<Object, Object> {

import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Tests for {@link ImmutableSetMultimap}.
 *
 * @author Mike Ward
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public class ImmutableSetMultimapTest extends TestCase {
  private static final class ImmutableSetMultimapGenerator extends TestStringSetMultimapGenerator {

    for (int i = 0; i < 8; i++) {
      limiter.acquire(); // // #4
    }
    stopwatch.sleepMillis(200); // #5: to repay for the last acquire
    stopwatch.sleepMillis(1000); // #6: still warm! It would take another 3 seconds to go cold
    for (int i = 0; i < 8; i++) {
      limiter.acquire(); // #7
    }
    assertEvents(
        "R0.00, R1.75, R1.26, R0.76, R0.30, R0.20, R0.20, R0.20", // #1