* limitations under the License.
 */
package org.gradle.internal;

import javax.annotation.Nullable;

/**
 * A generic factory which creates instances of type T.
 *
 * @param <T> The type of object created.
 */
public interface Factory<T> {
    /**
     * Creates a new instance of type T.
     * @return The instance.
     */
    @Nullable
    T create();

Steven Landow <******@****.***> 1713392444 -0700

John Howard <******@****.***> 1717711954 -0700

Anže Sodja <******@****.***> 1717576978 +0200

        cleanup:
        factory.close()
    }

    void "can visit all caches created by factory"() {
        def visited = [] as Set

        when:
        factory.open(tmpDir.testDirectory.file('foo'), "foo", [prop: 'value'], mode(Shared), null, null)
        factory.open(tmpDir.testDirectory.file('bar'), "bar", [prop: 'value'], mode(Shared), null, null)

      throws InvocationTargetException, IllegalAccessException {
    T returnValue = factory.invoke(null, args.toArray());
    if (returnValue == null) {
      Assert.assertTrue(
          factory + " returns null but it's not annotated with @Nullable", isNullable(factory));
    }
    return returnValue;
  }

  /**

    @Override
    public <T> T whileDisallowingProjectLockChanges(Factory<T> action) {
        return registries.get().getProjectLockRegistry().whileDisallowingLockChanges(action);
    }

    @Override
    public <T> T allowUncontrolledAccessToAnyProject(Factory<T> factory) {
        return registries.get().getProjectLockRegistry().allowUncontrolledAccessToAnyResource(factory);
    }

    @Override

      throws InvocationTargetException, IllegalAccessException {
    T returnValue = factory.invoke(null, args.toArray());
    if (returnValue == null) {
      Assert.assertTrue(
          factory + " returns null but it's not annotated with @Nullable", isNullable(factory));
    }
    return returnValue;
  }

  /**

    <T> T withLocks(Collection<? extends ResourceLock> locks, Factory<T> factory) {
        return factory.create()
    }

    @Override
    void withLocks(Collection<? extends ResourceLock> locks, Runnable action) {
        action.run()
    }

    @Override
    <T> T withoutLocks(Collection<? extends ResourceLock> locks, Factory<T> factory) {
        return factory.create()
    }

    @Override

        }
        def action2 = {
            thread.block()
            instant.completed2
        }

        when:
        async {
            factory.create("1").execute(action1)
            factory.create("2").execute(action2)
            factory.stop()
            instant.stopped
        }

        then:
        instant.stopped > instant.completed1
        instant.stopped > instant.completed2
    }