J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package com.sun.jdi; |
| 27 | |
| 28 | import java.util.List; |
| 29 | |
| 30 | /** |
| 31 | * A thread group object from the target VM. |
| 32 | * A ThreadGroupReference is an {@link ObjectReference} with additional |
| 33 | * access to threadgroup-specific information from the target VM. |
| 34 | * |
| 35 | * @author Robert Field |
| 36 | * @author Gordon Hirsch |
| 37 | * @author James McIlree |
| 38 | * @since 1.3 |
| 39 | */ |
| 40 | public interface ThreadGroupReference extends ObjectReference |
| 41 | { |
| 42 | /** |
| 43 | * Returns the name of this thread group. |
| 44 | * |
| 45 | * @return the string containing the thread group name. |
| 46 | */ |
| 47 | String name(); |
| 48 | |
| 49 | /** |
| 50 | * Returns the parent of this thread group. |
| 51 | * |
| 52 | * @return a {@link ThreadGroupReference} mirroring the parent of this |
| 53 | * thread group in the target VM, or null if this is a top-level |
| 54 | * thread group. |
| 55 | */ |
| 56 | ThreadGroupReference parent(); |
| 57 | |
| 58 | /** |
| 59 | * Suspends all threads in this thread group. Each thread |
| 60 | * in this group and in all of its subgroups will be |
| 61 | * suspended as described in {@link ThreadReference#suspend}. |
| 62 | * This is not guaranteed to be an atomic |
| 63 | * operation; if the target VM is not interrupted at the time |
| 64 | * this method is |
| 65 | * called, it is possible that new threads will be created |
| 66 | * between the time that threads are enumerated and all of them |
| 67 | * have been suspended. |
| 68 | * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. |
| 69 | */ |
| 70 | void suspend(); |
| 71 | |
| 72 | /** |
| 73 | * Resumes all threads in this thread group. Each thread |
| 74 | * in this group and in all of its subgroups will be |
| 75 | * resumed as described in {@link ThreadReference#resume}. |
| 76 | * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. |
| 77 | */ |
| 78 | void resume(); |
| 79 | |
| 80 | /** |
| 81 | * Returns a List containing a {@link ThreadReference} for each live thread |
| 82 | * in this thread group. Only the live threads in this immediate thread group |
| 83 | * (and not its subgroups) are returned. A thread is alive if it |
| 84 | * has been started and has not yet been stopped. |
| 85 | * |
| 86 | * @return a List of {@link ThreadReference} objects mirroring the |
| 87 | * live threads from this thread group in the target VM. |
| 88 | */ |
| 89 | List<ThreadReference> threads(); |
| 90 | |
| 91 | /** |
| 92 | * Returns a List containing each active {@link ThreadGroupReference} in this |
| 93 | * thread group. Only the active thread groups in this immediate thread group |
| 94 | * (and not its subgroups) are returned. |
| 95 | * See <a href="{@docRoot}/../../../../api/java/lang/ThreadGroup.html">java.lang.ThreadGroup</a> |
| 96 | * for information about 'active' ThreadGroups. |
| 97 | * @return a List of {@link ThreadGroupReference} objects mirroring the |
| 98 | * active thread groups from this thread group in the target VM. |
| 99 | */ |
| 100 | List<ThreadGroupReference> threadGroups(); |
| 101 | } |