Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
Balancer |
|
| 1.0;1 |
1 | package org.apache.maven.surefire.junitcore.pc; | |
2 | ||
3 | /* | |
4 | * Licensed to the Apache Software Foundation (ASF) under one | |
5 | * or more contributor license agreements. See the NOTICE file | |
6 | * distributed with this work for additional information | |
7 | * regarding copyright ownership. The ASF licenses this file | |
8 | * to you under the Apache License, Version 2.0 (the | |
9 | * "License"); you may not use this file except in compliance | |
10 | * with the License. You may obtain a copy of the License at | |
11 | * | |
12 | * http://www.apache.org/licenses/LICENSE-2.0 | |
13 | * | |
14 | * Unless required by applicable law or agreed to in writing, | |
15 | * software distributed under the License is distributed on an | |
16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
17 | * KIND, either express or implied. See the License for the | |
18 | * specific language governing permissions and limitations | |
19 | * under the License. | |
20 | */ | |
21 | ||
22 | /** | |
23 | * The Balancer controls the maximum of concurrent threads in the current Scheduler(s) and prevents | |
24 | * from own thread resources exhaustion if other group of schedulers share the same pool of threads. | |
25 | * <p> | |
26 | * If a permit is available, {@link #acquirePermit()} simply returns and a new test is scheduled | |
27 | * by {@link Scheduler#schedule(Runnable)} in the current runner. Otherwise waiting for a release. | |
28 | * One permit is released as soon as the child thread has finished. | |
29 | * | |
30 | * @author Tibor Digana (tibor17) | |
31 | * @since 2.16 | |
32 | */ | |
33 | public interface Balancer { | |
34 | ||
35 | /** | |
36 | * Acquires a permit from this balancer, blocking until one is available. | |
37 | * | |
38 | * @return <code>true</code> if current thread is <em>NOT</em> interrupted | |
39 | * while waiting for a permit. | |
40 | */ | |
41 | public boolean acquirePermit(); | |
42 | ||
43 | /** | |
44 | * Releases a permit, returning it to the balancer. | |
45 | */ | |
46 | public void releasePermit(); | |
47 | ||
48 | public void releaseAllPermits(); | |
49 | } |