Merge branch 'threadutilsmaster'
LANG-1105: Add ThreadUtils - A utility class for which provides helper methods related to java.lang.Thread. Thanks to Hendrik Saly for implementing this feature. Thanks to Fabian Lange and Charles Honton for their feedback during development.
This commit is contained in:
Benedikt Ritter
commit
1cb5573ada
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@ -22,6 +22,7 @@
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<body>
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<release version="3.5" date="tba" description="tba">
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<action issue="LANG-1105" type="add" dev="britter" due-to="Hendrik Saly">Add ThreadUtils - A utility class which provides helper methods related to java.lang.Thread</action>
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<action issue="LANG-1031" type="add" dev="britter" due-to="Felipe Adorno">Add annotations to exclude fields from ReflectionEqualsBuilder, ReflectionToStringBuilder and ReflectionHashCodeBuilder</action>
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<action issue="LANG-1127" type="add" dev="chas">Unit test helpers which set and reset default Locale and TimeZone</action>
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<action issue="LANG-1128" type="fix" dev="britter" due-to="jacktan1991">JsonToStringStyle doesn't handle chars and objects correctly</action>
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@ -0,0 +1,467 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
|
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.commons.lang3;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.List;
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/**
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* <p>
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* Helpers for {@code java.lang.Thread} and {@code java.lang.ThreadGroup}.
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* </p>
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* <p>
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* #ThreadSafe#
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* </p>
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*
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* @see java.lang.Thread
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* @see java.lang.ThreadGroup
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* @since 3.5
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* @version $Id$
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*/
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public class ThreadUtils {
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/**
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* Return the active thread with the specified id if it belong's to the specified thread group.
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*
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* @param threadId The thread id
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* @param threadGroup The thread group
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* @return The thread which belongs to a specified thread group and the thread's id match the specified id.
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* {@code null} is returned if no such thread exists
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* @throws IllegalArgumentException if the specified id is zero or negative or the group is null
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* @throws SecurityException
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* if the current thread cannot access the system thread group
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*
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* @throws SecurityException if the current thread cannot modify
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* thread groups from this thread's thread group up to the system thread group
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*/
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public static Thread findThreadById(final long threadId, final ThreadGroup threadGroup) {
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if (threadGroup == null) {
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throw new IllegalArgumentException("The thread group must not be null");
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}
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final Thread thread = findThreadById(threadId);
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if(thread != null && threadGroup.equals(thread.getThreadGroup())) {
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return thread;
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}
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return null;
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}
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/**
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* Return the active thread with the specified id if it belong's to a thread group with the specified group name.
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*
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* @param threadId The thread id
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* @param threadGroupName The thread group name
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* @return The threads which belongs to a thread group with the specified group name and the thread's id match the specified id.
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* {@code null} is returned if no such thread exists
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* @throws IllegalArgumentException if the specified id is zero or negative or the group name is null
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* @throws SecurityException
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* if the current thread cannot access the system thread group
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*
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* @throws SecurityException if the current thread cannot modify
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* thread groups from this thread's thread group up to the system thread group
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*/
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public static Thread findThreadById(final long threadId, final String threadGroupName) {
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if (threadGroupName == null) {
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throw new IllegalArgumentException("The thread group name must not be null");
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}
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final Thread thread = findThreadById(threadId);
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if(thread != null && thread.getThreadGroup() != null && thread.getThreadGroup().getName().equals(threadGroupName)) {
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return thread;
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}
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return null;
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}
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|
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/**
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* Return active threads with the specified name if they belong to a specified thread group.
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*
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* @param threadName The thread name
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* @param threadGroupName The thread group
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* @return The threads which belongs to a thread group and the thread's name match the specified name,
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* An empty collection is returned if no such thread exists. The collection returned is always unmodifiable.
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* @throws IllegalArgumentException if the specified thread name or group is null
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* @throws SecurityException
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* if the current thread cannot access the system thread group
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*
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* @throws SecurityException if the current thread cannot modify
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* thread groups from this thread's thread group up to the system thread group
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*/
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public static Collection<Thread> findThreadsByName(final String threadName, final ThreadGroup threadGroup) {
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return findThreads(threadGroup, false, new NamePredicate(threadName));
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}
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|
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/**
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* Return active threads with the specified name if they belong to a thread group with the specified group name.
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*
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* @param threadName The thread name
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* @param threadGroupName The thread group name
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* @return The threads which belongs to a thread group with the specified group name and the thread's name match the specified name,
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* An empty collection is returned if no such thread exists. The collection returned is always unmodifiable.
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* @throws IllegalArgumentException if the specified thread name or group name is null
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* @throws SecurityException
|
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* if the current thread cannot access the system thread group
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*
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* @throws SecurityException if the current thread cannot modify
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* thread groups from this thread's thread group up to the system thread group
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*/
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public static Collection<Thread> findThreadsByName(final String threadName, final String threadGroupName) {
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if (threadName == null) {
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throw new IllegalArgumentException("The thread name must not be null");
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}
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if (threadGroupName == null) {
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throw new IllegalArgumentException("The thread group name must not be null");
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}
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final Collection<ThreadGroup> threadGroups = findThreadGroups(new NamePredicate(threadGroupName));
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if(threadGroups.isEmpty()) {
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return Collections.EMPTY_LIST;
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}
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final Collection<Thread> result = new ArrayList<Thread>();
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final NamePredicate threadNamePredicate = new NamePredicate(threadName);
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for(final ThreadGroup group : threadGroups) {
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result.addAll(findThreads(group, false, threadNamePredicate));
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}
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return Collections.unmodifiableCollection(result);
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}
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/**
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* Return active thread groups with the specified group name.
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*
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* @param threadGroupName The thread group name
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* @return the thread groups with the specified group name or an empty collection if no such thread group exists. The collection returned is always unmodifiable.
|
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* @throws IllegalArgumentException if group name is null
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* @throws SecurityException
|
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* if the current thread cannot access the system thread group
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*
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* @throws SecurityException if the current thread cannot modify
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* thread groups from this thread's thread group up to the system thread group
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*/
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public static Collection<ThreadGroup> findThreadGroupsByName(final String threadGroupName) {
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return findThreadGroups(new NamePredicate(threadGroupName));
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}
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/**
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* Return all active thread groups excluding the system thread group (A thread group is active if it has been not destroyed).
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*
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* @return all thread groups excluding the system thread group. The collection returned is always unmodifiable.
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* @throws SecurityException
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* if the current thread cannot access the system thread group
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*
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* @throws SecurityException if the current thread cannot modify
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||||
* thread groups from this thread's thread group up to the system thread group
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*/
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public static Collection<ThreadGroup> getAllThreadGroups() {
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return findThreadGroups(ALWAYS_TRUE_PREDICATE);
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}
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/**
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* Return the system thread group (sometimes also referred as "root thread group").
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*
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* @return the system thread group
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* @throws SecurityException if the current thread cannot modify
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||||
* thread groups from this thread's thread group up to the system thread group
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*/
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||||
public static ThreadGroup getSystemThreadGroup() {
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ThreadGroup threadGroup = Thread.currentThread().getThreadGroup();
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while(threadGroup.getParent() != null) {
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threadGroup = threadGroup.getParent();
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||||
}
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return threadGroup;
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}
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/**
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* Return all active threads (A thread is active if it has been started and has not yet died).
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*
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* @return all active threads. The collection returned is always unmodifiable.
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* @throws SecurityException
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||||
* if the current thread cannot access the system thread group
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*
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* @throws SecurityException if the current thread cannot modify
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||||
* thread groups from this thread's thread group up to the system thread group
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*/
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public static Collection<Thread> getAllThreads() {
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return findThreads(ALWAYS_TRUE_PREDICATE);
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}
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/**
|
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* Return active threads with the specified name.
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*
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* @param threadName The thread name
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||||
* @return The threads with the specified name or an empty collection if no such thread exists. The collection returned is always unmodifiable.
|
||||
* @throws IllegalArgumentException if the specified name is null
|
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* @throws SecurityException
|
||||
* if the current thread cannot access the system thread group
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||||
*
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||||
* @throws SecurityException if the current thread cannot modify
|
||||
* thread groups from this thread's thread group up to the system thread group
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||||
*/
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||||
public static Collection<Thread> findThreadsByName(final String threadName) {
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return findThreads(new NamePredicate(threadName));
|
||||
}
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/**
|
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* Return the active thread with the specified id.
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||||
*
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||||
* @param threadId The thread id
|
||||
* @return The thread with the specified id or {@code null} if no such thread exists
|
||||
* @throws IllegalArgumentException if the specified id is zero or negative
|
||||
* @throws SecurityException
|
||||
* if the current thread cannot access the system thread group
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||||
*
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* @throws SecurityException if the current thread cannot modify
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||||
* thread groups from this thread's thread group up to the system thread group
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*/
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public static Thread findThreadById(final long threadId) {
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final Collection<Thread> result = findThreads(new ThreadIdPredicate(threadId));
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|
||||
if(result.isEmpty()) {
|
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return null;
|
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} else {
|
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return result.iterator().next();
|
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}
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}
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/**
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* <p>
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* ThreadUtils instances should NOT be constructed in standard programming. Instead, the class should be used as
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* {@code ThreadUtils.getAllThreads()}
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* </p>
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* <p>
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* This constructor is public to permit tools that require a JavaBean instance to operate.
|
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* </p>
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*/
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public ThreadUtils() {
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super();
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}
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/**
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* A predicate for selecting threads.
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*/
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//if java minimal version for lang becomes 1.8 extend this interface from java.util.function.Predicate
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public static interface ThreadPredicate /*extends java.util.function.Predicate<Thread>*/{
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/**
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* Evaluates this predicate on the given thread.
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* @param thread the thread
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* @return {@code true} if the thread matches the predicate, otherwise {@code false}
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*/
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boolean test(Thread thread);
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}
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/**
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* A predicate for selecting threadgroups.
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*/
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//if java minimal version for lang becomes 1.8 extend this interface from java.util.function.Predicate
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public static interface ThreadGroupPredicate /*extends java.util.function.Predicate<ThreadGroup>*/{
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/**
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* Evaluates this predicate on the given threadgroup.
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* @param threadGroup the threadgroup
|
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* @return {@code true} if the threadGroup matches the predicate, otherwise {@code false}
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*/
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boolean test(ThreadGroup threadGroup);
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}
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||||
/**
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* Predicate which always returns true.
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*/
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public static final AlwaysTruePredicate ALWAYS_TRUE_PREDICATE = new AlwaysTruePredicate();
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/**
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* A predicate implementation which always returns true.
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*/
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private final static class AlwaysTruePredicate implements ThreadPredicate, ThreadGroupPredicate{
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private AlwaysTruePredicate() {
|
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}
|
||||
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@Override
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public boolean test(@SuppressWarnings("unused") final ThreadGroup threadGroup) {
|
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return true;
|
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}
|
||||
|
||||
@Override
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public boolean test(@SuppressWarnings("unused") final Thread thread) {
|
||||
return true;
|
||||
}
|
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}
|
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|
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/**
|
||||
* A predicate implementation which matches a thread or threadgroup name.
|
||||
*/
|
||||
public static class NamePredicate implements ThreadPredicate, ThreadGroupPredicate {
|
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|
||||
private final String name;
|
||||
|
||||
/**
|
||||
* Predicate constructor
|
||||
*
|
||||
* @param name thread or threadgroup name
|
||||
* @throws IllegalArgumentException if the name is {@code null}
|
||||
*/
|
||||
public NamePredicate(final String name) {
|
||||
super();
|
||||
if (name == null) {
|
||||
throw new IllegalArgumentException("The name must not be null");
|
||||
}
|
||||
this.name = name;
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean test(final ThreadGroup threadGroup) {
|
||||
return threadGroup != null && threadGroup.getName().equals(name);
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean test(final Thread thread) {
|
||||
return thread != null && thread.getName().equals(name);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* A predicate implementation which matches a thread id.
|
||||
*/
|
||||
public static class ThreadIdPredicate implements ThreadPredicate {
|
||||
|
||||
private final long threadId;
|
||||
|
||||
/**
|
||||
* Predicate constructor
|
||||
*
|
||||
* @param threadId the threadId to match
|
||||
* @throws IllegalArgumentException if the threadId is zero or negative
|
||||
*/
|
||||
public ThreadIdPredicate(final long threadId) {
|
||||
super();
|
||||
if (threadId <= 0) {
|
||||
throw new IllegalArgumentException("The thread id must be greater than zero");
|
||||
}
|
||||
this.threadId = threadId;
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean test(final Thread thread) {
|
||||
return thread != null && thread.getId() == threadId;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Select all active threads which match the given predicate.
|
||||
*
|
||||
* @param predicate the predicate
|
||||
* @return An unmodifiable {@code Collection} of active threads matching the given predicate
|
||||
*
|
||||
* @throws IllegalArgumentException if the predicate is null
|
||||
* @throws SecurityException
|
||||
* if the current thread cannot access the system thread group
|
||||
* @throws SecurityException if the current thread cannot modify
|
||||
* thread groups from this thread's thread group up to the system thread group
|
||||
*/
|
||||
public static Collection<Thread> findThreads(final ThreadPredicate predicate){
|
||||
return findThreads(getSystemThreadGroup(), true, predicate);
|
||||
}
|
||||
|
||||
/**
|
||||
* Select all active threadgroups which match the given predicate.
|
||||
*
|
||||
* @param predicate
|
||||
* @return An unmodifiable {@code Collection} of active threadgroups matching the given predicate
|
||||
* @throws IllegalArgumentException if the predicate is null
|
||||
* @throws SecurityException
|
||||
* if the current thread cannot access the system thread group
|
||||
* @throws SecurityException if the current thread cannot modify
|
||||
* thread groups from this thread's thread group up to the system thread group
|
||||
*/
|
||||
public static Collection<ThreadGroup> findThreadGroups(final ThreadGroupPredicate predicate){
|
||||
return findThreadGroups(getSystemThreadGroup(), true, predicate);
|
||||
}
|
||||
|
||||
/**
|
||||
* Select all active threads which match the given predicate and which belongs to the given thread group (or one of its subgroups).
|
||||
*
|
||||
* @param group the thread group
|
||||
* @param recurse if {@code true} then evaluate the predicate recursively on all threads in all subgroups of the given group
|
||||
* @param predicate the predicate
|
||||
* @return An unmodifiable {@code Collection} of active threads which match the given predicate and which belongs to the given thread group
|
||||
* @throws IllegalArgumentException if the given group or predicate is null
|
||||
* @throws SecurityException if the current thread cannot modify
|
||||
* thread groups from this thread's thread group up to the system thread group
|
||||
*/
|
||||
public static Collection<Thread> findThreads(final ThreadGroup group, final boolean recurse, final ThreadPredicate predicate) {
|
||||
if (group == null) {
|
||||
throw new IllegalArgumentException("The group must not be null");
|
||||
}
|
||||
if (predicate == null) {
|
||||
throw new IllegalArgumentException("The predicate must not be null");
|
||||
}
|
||||
|
||||
int count = group.activeCount();
|
||||
Thread[] threads;
|
||||
do {
|
||||
threads = new Thread[count + (count / 2) + 1]; //slightly grow the array size
|
||||
count = group.enumerate(threads, recurse);
|
||||
//return value of enumerate() must be strictly less than the array size according to javadoc
|
||||
} while (count >= threads.length);
|
||||
|
||||
final List<Thread> result = new ArrayList<Thread>(count);
|
||||
for (int i = 0; i < count; ++i) {
|
||||
if (predicate.test(threads[i])) {
|
||||
result.add(threads[i]);
|
||||
}
|
||||
}
|
||||
return Collections.unmodifiableCollection(result);
|
||||
}
|
||||
|
||||
/**
|
||||
* Select all active threadgroups which match the given predicate and which is a subgroup of the given thread group (or one of its subgroups).
|
||||
*
|
||||
* @param group the thread group
|
||||
* @param recurse if {@code true} then evaluate the predicate recursively on all threadgroups in all subgroups of the given group
|
||||
* @param predicate the predicate
|
||||
* @return An unmodifiable {@code Collection} of active threadgroups which match the given predicate and which is a subgroup of the given thread group
|
||||
* @throws IllegalArgumentException if the given group or predicate is null
|
||||
* @throws SecurityException if the current thread cannot modify
|
||||
* thread groups from this thread's thread group up to the system thread group
|
||||
*/
|
||||
public static Collection<ThreadGroup> findThreadGroups(final ThreadGroup group, final boolean recurse, final ThreadGroupPredicate predicate){
|
||||
if (group == null) {
|
||||
throw new IllegalArgumentException("The group must not be null");
|
||||
}
|
||||
if (predicate == null) {
|
||||
throw new IllegalArgumentException("The predicate must not be null");
|
||||
}
|
||||
|
||||
int count = group.activeGroupCount();
|
||||
ThreadGroup[] threadGroups;
|
||||
do {
|
||||
threadGroups = new ThreadGroup[count + (count / 2) + 1]; //slightly grow the array size
|
||||
count = group.enumerate(threadGroups, recurse);
|
||||
//return value of enumerate() must be strictly less than the array size according to javadoc
|
||||
} while(count >= threadGroups.length);
|
||||
|
||||
final List<ThreadGroup> result = new ArrayList<ThreadGroup>(count);
|
||||
for(int i = 0; i < count; ++i) {
|
||||
if(predicate.test(threadGroups[i])) {
|
||||
result.add(threadGroups[i]);
|
||||
}
|
||||
}
|
||||
return Collections.unmodifiableCollection(result);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,377 @@
|
|||
/*
|
||||
* Licensed to the Apache Software Foundation (ASF) under one
|
||||
* or more contributor license agreements. See the NOTICE file
|
||||
* distributed with this work for additional information
|
||||
* regarding copyright ownership. The ASF licenses this file
|
||||
* to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing,
|
||||
* software distributed under the License is distributed on an
|
||||
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
||||
* KIND, either express or implied. See the License for the
|
||||
* specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*/
|
||||
|
||||
package org.apache.commons.lang3;
|
||||
|
||||
import static org.junit.Assert.assertEquals;
|
||||
import static org.junit.Assert.assertFalse;
|
||||
import static org.junit.Assert.assertNotNull;
|
||||
import static org.junit.Assert.assertNull;
|
||||
import static org.junit.Assert.assertSame;
|
||||
import static org.junit.Assert.assertTrue;
|
||||
|
||||
import java.lang.reflect.Constructor;
|
||||
import java.lang.reflect.Modifier;
|
||||
import java.util.Arrays;
|
||||
import java.util.Iterator;
|
||||
import java.util.List;
|
||||
import java.util.concurrent.CountDownLatch;
|
||||
|
||||
//import org.apache.commons.lang3.ThreadUtils.AlwaysTruePredicate;
|
||||
import org.junit.Test;
|
||||
|
||||
/**
|
||||
* Unit tests {@link org.apache.commons.lang3.ThreadUtils}.
|
||||
*
|
||||
* @version $Id$
|
||||
*/
|
||||
public class ThreadUtilsTest {
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testNullThreadName() throws InterruptedException {
|
||||
ThreadUtils.findThreadsByName(null);
|
||||
}
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testNullThreadGroupName() throws InterruptedException {
|
||||
ThreadUtils.findThreadGroupsByName(null);
|
||||
}
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testNullThreadThreadGroupName1() throws InterruptedException {
|
||||
ThreadUtils.findThreadsByName(null, "tgname");
|
||||
}
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testNullThreadThreadGroupName2() throws InterruptedException {
|
||||
ThreadUtils.findThreadsByName("tname", (String) null);
|
||||
}
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testNullThreadThreadGroupName3() throws InterruptedException {
|
||||
ThreadUtils.findThreadsByName(null, (String) null);
|
||||
}
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testNullThreadThreadGroup1() throws InterruptedException {
|
||||
ThreadUtils.findThreadsByName("tname", (ThreadGroup) null);
|
||||
}
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testNullThreadThreadGroup2() throws InterruptedException {
|
||||
ThreadUtils.findThreadById(1L, (ThreadGroup) null);
|
||||
}
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testNullThreadThreadGroup3() throws InterruptedException {
|
||||
ThreadUtils.findThreadsByName(null, (ThreadGroup) null);
|
||||
}
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testInvalidThreadId() throws InterruptedException {
|
||||
ThreadUtils.findThreadById(-5L);
|
||||
}
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testThreadGroupsByIdFail() throws InterruptedException {
|
||||
ThreadUtils.findThreadById(Thread.currentThread().getId(), (String) null);
|
||||
}
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testThreadgroupsNullParent() throws InterruptedException {
|
||||
ThreadUtils.findThreadGroups(null, true, ThreadUtils.ALWAYS_TRUE_PREDICATE);
|
||||
}
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testThreadgroupsNullPredicate() throws InterruptedException {
|
||||
ThreadUtils.findThreadGroups(null);
|
||||
}
|
||||
|
||||
@Test(expected=IllegalArgumentException.class)
|
||||
public void testThreadsNullPredicate() throws InterruptedException {
|
||||
ThreadUtils.findThreads(null);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testNoThread() throws InterruptedException {
|
||||
assertEquals(0, ThreadUtils.findThreadsByName("some_thread_which_does_not_exist_18762ZucTT").size());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testNoThreadGroup() throws InterruptedException {
|
||||
assertEquals(0, ThreadUtils.findThreadGroupsByName("some_thread_group_which_does_not_exist_18762ZucTTII").size());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testSystemThreadGroupExists() throws InterruptedException {
|
||||
final ThreadGroup systemThreadGroup = ThreadUtils.getSystemThreadGroup();
|
||||
assertNotNull(systemThreadGroup);
|
||||
assertNull(systemThreadGroup.getParent());
|
||||
assertEquals("system", systemThreadGroup.getName());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testAtLeastOneThreadExists() throws InterruptedException {
|
||||
assertTrue(ThreadUtils.getAllThreads().size() > 0);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testAtLeastOneThreadGroupsExists() throws InterruptedException {
|
||||
assertTrue(ThreadUtils.getAllThreadGroups().size() > 0);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testThreadsSameName() throws InterruptedException {
|
||||
final Thread t1 = new TestThread("thread1_XXOOLL__");
|
||||
final Thread alsot1 = new TestThread("thread1_XXOOLL__");
|
||||
|
||||
try {
|
||||
t1.start();
|
||||
alsot1.start();
|
||||
assertEquals(2, ThreadUtils.findThreadsByName("thread1_XXOOLL__").size());
|
||||
} finally {
|
||||
t1.interrupt();
|
||||
alsot1.interrupt();
|
||||
t1.join();
|
||||
alsot1.join();
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testThreads() throws InterruptedException {
|
||||
final Thread t1 = new TestThread("thread1_XXOOLL__");
|
||||
final Thread t2 = new TestThread("thread2_XXOOLL__");
|
||||
|
||||
try {
|
||||
t1.start();
|
||||
t2.start();
|
||||
assertEquals(1, ThreadUtils.findThreadsByName("thread2_XXOOLL__").size());
|
||||
} finally {
|
||||
t1.interrupt();
|
||||
t2.interrupt();
|
||||
t1.join();
|
||||
t2.join();
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testThreadsById() throws InterruptedException {
|
||||
final Thread t1 = new TestThread("thread1_XXOOLL__");
|
||||
final Thread t2 = new TestThread("thread2_XXOOLL__");
|
||||
|
||||
try {
|
||||
t1.start();
|
||||
t2.start();
|
||||
assertEquals(t1.getName(), ThreadUtils.findThreadById(t1.getId()).getName());
|
||||
assertSame(t2, ThreadUtils.findThreadById(t2.getId()));
|
||||
} finally {
|
||||
t1.interrupt();
|
||||
t2.interrupt();
|
||||
t1.join();
|
||||
t2.join();
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testThreadsByIdWrongGroup() throws InterruptedException {
|
||||
final Thread t1 = new TestThread("thread1_XXOOLL__");
|
||||
final ThreadGroup tg = new ThreadGroup("tg__HHEE22");
|
||||
|
||||
try {
|
||||
t1.start();
|
||||
assertNull(ThreadUtils.findThreadById(t1.getId(), tg));
|
||||
} finally {
|
||||
t1.interrupt();
|
||||
t1.join();
|
||||
tg.destroy();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
public void testThreadGroups() throws InterruptedException {
|
||||
final ThreadGroup threadGroup = new ThreadGroup("thread_group_DDZZ99__");
|
||||
final Thread t1 = new TestThread(threadGroup, "thread1_XXOOPP__");
|
||||
final Thread t2 = new TestThread(threadGroup, "thread2_XXOOPP__");
|
||||
|
||||
try {
|
||||
t1.start();
|
||||
t2.start();
|
||||
assertEquals(1, ThreadUtils.findThreadsByName("thread1_XXOOPP__").size());
|
||||
assertEquals(1, ThreadUtils.findThreadsByName("thread1_XXOOPP__","thread_group_DDZZ99__").size());
|
||||
assertEquals(1, ThreadUtils.findThreadsByName("thread2_XXOOPP__","thread_group_DDZZ99__").size());
|
||||
assertEquals(0, ThreadUtils.findThreadsByName("thread1_XXOOPP__","non_existent_thread_group_JJHHZZ__").size());
|
||||
assertEquals(0, ThreadUtils.findThreadsByName("non_existent_thread_BBDDWW__","thread_group_DDZZ99__").size());
|
||||
assertEquals(1, ThreadUtils.findThreadGroupsByName("thread_group_DDZZ99__").size());
|
||||
assertEquals(0, ThreadUtils.findThreadGroupsByName("non_existent_thread_group_JJHHZZ__").size());
|
||||
assertNotNull(ThreadUtils.findThreadById(t1.getId(),threadGroup));
|
||||
} finally {
|
||||
t1.interrupt();
|
||||
t2.interrupt();
|
||||
t1.join();
|
||||
t2.join();
|
||||
threadGroup.destroy();
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testThreadGroupsRef() throws InterruptedException {
|
||||
final ThreadGroup threadGroup = new ThreadGroup("thread_group_DDZZ99__");
|
||||
final ThreadGroup deadThreadGroup = new ThreadGroup("dead_thread_group_MMQQSS__");
|
||||
deadThreadGroup.destroy();
|
||||
final Thread t1 = new TestThread(threadGroup, "thread1_XXOOPP__");
|
||||
final Thread t2 = new TestThread(threadGroup, "thread2_XXOOPP__");
|
||||
|
||||
try {
|
||||
t1.start();
|
||||
t2.start();
|
||||
assertEquals(1, ThreadUtils.findThreadsByName("thread1_XXOOPP__").size());
|
||||
assertEquals(1, ThreadUtils.findThreadsByName("thread1_XXOOPP__",threadGroup).size());
|
||||
assertEquals(1, ThreadUtils.findThreadsByName("thread2_XXOOPP__",threadGroup).size());
|
||||
assertEquals(0, ThreadUtils.findThreadsByName("thread1_XXOOPP__",deadThreadGroup).size());
|
||||
} finally {
|
||||
t1.interrupt();
|
||||
t2.interrupt();
|
||||
t1.join();
|
||||
t2.join();
|
||||
threadGroup.destroy();
|
||||
assertEquals(0, ThreadUtils.findThreadsByName("thread2_XXOOPP__",threadGroup).size());
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testThreadGroupsById() throws InterruptedException {
|
||||
final ThreadGroup threadGroup = new ThreadGroup("thread_group_DDZZ99__");
|
||||
final Thread t1 = new TestThread(threadGroup, "thread1_XXOOPP__");
|
||||
final Thread t2 = new TestThread(threadGroup, "thread2_XXOOPP__");
|
||||
final long nonExistingId = t1.getId()+t2.getId();
|
||||
|
||||
try {
|
||||
t1.start();
|
||||
t2.start();
|
||||
assertEquals(t1.getName(), ThreadUtils.findThreadById(t1.getId(),"thread_group_DDZZ99__").getName());
|
||||
assertEquals(t2.getName(), ThreadUtils.findThreadById(t2.getId(),"thread_group_DDZZ99__").getName());
|
||||
assertNull(ThreadUtils.findThreadById(nonExistingId,"non_existent_thread_group_JJHHZZ__"));
|
||||
assertNull(ThreadUtils.findThreadById(nonExistingId,"thread_group_DDZZ99__"));
|
||||
} finally {
|
||||
t1.interrupt();
|
||||
t2.interrupt();
|
||||
t1.join();
|
||||
t2.join();
|
||||
threadGroup.destroy();
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testConstructor() throws InterruptedException {
|
||||
assertNotNull(new ThreadUtils());
|
||||
final Constructor<?>[] cons = ThreadUtils.class.getDeclaredConstructors();
|
||||
assertEquals(1, cons.length);
|
||||
assertTrue(Modifier.isPublic(cons[0].getModifiers()));
|
||||
assertTrue(Modifier.isPublic(ThreadUtils.class.getModifiers()));
|
||||
assertFalse(Modifier.isFinal(ThreadUtils.class.getModifiers()));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testComplexThreadGroups() throws Exception {
|
||||
final ThreadGroup threadGroup1 = new ThreadGroup("thread_group_1__");
|
||||
final ThreadGroup threadGroup2 = new ThreadGroup("thread_group_2__");
|
||||
final ThreadGroup threadGroup3 = new ThreadGroup(threadGroup2, "thread_group_3__");
|
||||
final ThreadGroup threadGroup4 = new ThreadGroup(threadGroup2, "thread_group_4__");
|
||||
final ThreadGroup threadGroup5 = new ThreadGroup(threadGroup1, "thread_group_5__");
|
||||
final ThreadGroup threadGroup6 = new ThreadGroup(threadGroup4, "thread_group_6__");
|
||||
final ThreadGroup threadGroup7 = new ThreadGroup(threadGroup4, "thread_group_7__");
|
||||
final ThreadGroup threadGroup7Doubled = new ThreadGroup(threadGroup4, "thread_group_7__");
|
||||
final List<ThreadGroup> threadGroups = Arrays.asList(threadGroup1,threadGroup2,threadGroup3,threadGroup4,threadGroup5,threadGroup6, threadGroup7, threadGroup7Doubled);
|
||||
|
||||
final Thread t1 = new TestThread("thread1_X__");
|
||||
final Thread t2 = new TestThread(threadGroup1, "thread2_X__");
|
||||
final Thread t3 = new TestThread(threadGroup2, "thread3_X__");
|
||||
final Thread t4 = new TestThread(threadGroup3, "thread4_X__");
|
||||
final Thread t5 = new TestThread(threadGroup4, "thread5_X__");
|
||||
final Thread t6 = new TestThread(threadGroup5, "thread6_X__");
|
||||
final Thread t7 = new TestThread(threadGroup6, "thread7_X__");
|
||||
final Thread t8 = new TestThread(threadGroup4, "thread8_X__");
|
||||
final Thread t9 = new TestThread(threadGroup6, "thread9_X__");
|
||||
final Thread t10 = new TestThread(threadGroup3, "thread10_X__");
|
||||
final Thread t11 = new TestThread(threadGroup7, "thread11_X__");
|
||||
final Thread t11Doubled = new TestThread(threadGroup7Doubled, "thread11_X__");
|
||||
final List<Thread> threads = Arrays.asList(t1,t2,t3,t4,t5,t6,t7,t8,t9,t10, t11, t11Doubled);
|
||||
|
||||
try {
|
||||
for (final Iterator iterator = threads.iterator(); iterator.hasNext();) {
|
||||
final Thread thread = (Thread) iterator.next();
|
||||
thread.start();
|
||||
}
|
||||
assertTrue(ThreadUtils.getAllThreadGroups().size() >= 7);
|
||||
assertTrue(ThreadUtils.getAllThreads().size() >= 11);
|
||||
assertTrue(ThreadUtils.findThreads(ThreadUtils.ALWAYS_TRUE_PREDICATE).size() >= 11);
|
||||
assertEquals(1, ThreadUtils.findThreadsByName(t4.getName(), threadGroup3.getName()).size());
|
||||
assertEquals(0, ThreadUtils.findThreadsByName(t4.getName(), threadGroup2.getName()).size());
|
||||
assertEquals(2, ThreadUtils.findThreadsByName(t11.getName(), threadGroup7.getName()).size());
|
||||
}finally {
|
||||
for (final Iterator iterator = threads.iterator(); iterator.hasNext();) {
|
||||
final Thread thread = (Thread) iterator.next();
|
||||
thread.interrupt();
|
||||
thread.join();
|
||||
}
|
||||
for (final Iterator iterator = threadGroups.iterator(); iterator.hasNext();) {
|
||||
final ThreadGroup threadGroup = (ThreadGroup) iterator.next();
|
||||
if(!threadGroup.isDestroyed()) {
|
||||
threadGroup.destroy();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
private static class TestThread extends Thread {
|
||||
private final CountDownLatch latch = new CountDownLatch(1);
|
||||
|
||||
public TestThread(final String name) {
|
||||
super(name);
|
||||
}
|
||||
|
||||
public TestThread(final ThreadGroup group, final String name) {
|
||||
super(group, name);
|
||||
}
|
||||
|
||||
@Override
|
||||
public synchronized void start() {
|
||||
super.start();
|
||||
try {
|
||||
latch.await();
|
||||
} catch (final InterruptedException e) {
|
||||
Thread.currentThread().interrupt();
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public void run() {
|
||||
latch.countDown();
|
||||
try {
|
||||
synchronized(this){
|
||||
this.wait();
|
||||
}
|
||||
} catch (final InterruptedException e) {
|
||||
Thread.currentThread().interrupt();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue