01 /*
02 * Copyright 2008-2016 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package griffon.core;
17
18 import javax.annotation.Nonnull;
19 import javax.annotation.Nullable;
20 import java.util.Collection;
21 import java.util.concurrent.ExecutorService;
22
23 /**
24 * @author Andres Almiray
25 * @since 2.0.0
26 */
27 public interface ExecutorServiceManager {
28 /**
29 * Returns an immutable view of all {@code ExecutorService}s currently managed.
30 *
31 * @return a collection of all {@code ExecutorService}s or empty if none.
32 * @since 2.4.0
33 */
34 @Nonnull
35 Collection<ExecutorService> getExecutorServices();
36
37 @Nullable
38 ExecutorService add(@Nullable ExecutorService executorService);
39
40 @Nullable
41 ExecutorService remove(@Nullable ExecutorService executorService);
42
43 void shutdownAll();
44 }
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