JDK8/Java8源码在线阅读

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * particular file as subject to the "Classpath" exception as provided
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 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package com.sun.jdi;

import java.util.List;

/**
 * A thread group object from the target VM.
 * A ThreadGroupReference is an {@link ObjectReference} with additional
 * access to threadgroup-specific information from the target VM.
 *
 * @author Robert Field
 * @author Gordon Hirsch
 * @author James McIlree
 * @since  1.3
 */
@jdk.Exported
public interface ThreadGroupReference extends ObjectReference {

    /**
     * Returns the name of this thread group.
     *
     * @return the string containing the thread group name.
     */
    String name();

    /**
     * Returns the parent of this thread group.
     *
     * @return a {@link ThreadGroupReference} mirroring the parent of this
     * thread group in the target VM, or null if this is a top-level
     * thread group.
     */
    ThreadGroupReference parent();

    /**
     * Suspends all threads in this thread group. Each thread
     * in this group and in all of its subgroups will be
     * suspended as described in {@link ThreadReference#suspend}.
     * This is not guaranteed to be an atomic
     * operation; if the target VM is not interrupted at the time
     * this method is
     * called, it is possible that new threads will be created
     * between the time that threads are enumerated and all of them
     * have been suspended.
     * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}.
     */
    void suspend();

    /**
     * Resumes all threads in this thread group. Each thread
     * in this group and in all of its subgroups will be
     * resumed as described in {@link ThreadReference#resume}.
     * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}.
     */
    void resume();

    /**
     * Returns a List containing a {@link ThreadReference} for each live thread
     * in this thread group. Only the live threads in this immediate thread group
     * (and not its subgroups) are returned.  A thread is alive if it
     * has been started and has not yet been stopped.
     *
     * @return a List of {@link ThreadReference} objects mirroring the
     * live threads from this thread group in the target VM.
     */
    List<ThreadReference> threads();

    /**
     * Returns a List containing each active {@link ThreadGroupReference} in this

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