01 /*
02 * SPDX-License-Identifier: Apache-2.0
03 *
04 * Copyright 2008-2017 the original author or authors.
05 *
06 * Licensed under the Apache License, Version 2.0 (the "License");
07 * you may not use this file except in compliance with the License.
08 * You may obtain a copy of the License at
09 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package griffon.core;
19
20 import javax.annotation.Nonnull;
21 import javax.annotation.Nullable;
22 import java.util.Collection;
23 import java.util.concurrent.ExecutorService;
24
25 /**
26 * @author Andres Almiray
27 * @since 2.0.0
28 */
29 public interface ExecutorServiceManager {
30 /**
31 * Returns an immutable view of all {@code ExecutorService}s currently managed.
32 *
33 * @return a collection of all {@code ExecutorService}s or empty if none.
34 * @since 2.4.0
35 */
36 @Nonnull
37 Collection<ExecutorService> getExecutorServices();
38
39 @Nullable
40 ExecutorService add(@Nullable ExecutorService executorService);
41
42 @Nullable
43 ExecutorService remove(@Nullable ExecutorService executorService);
44
45 void shutdownAll();
46 }
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