1/* 2 * Copyright (c) 2005, 2013, Oracle and/or its affiliates. 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26package com.sun.jdi; 27 28/** 29 * Information about a monitor owned by a thread. 30 * 31 * @author Swamy Venkataramanappa 32 * @since 1.6 33 */ 34 35public interface MonitorInfo extends Mirror { 36 37 /** 38 * Returns the {@link ObjectReference} object for the monitor. 39 * @return the {@link ObjectReference} object for the monitor. 40 * @throws InvalidStackFrameException if the associated stack 41 * frame has become invalid. Once the frame's thread is resumed, 42 * the stack frame is no longer valid. 43 * @see ThreadReference#ownedMonitorsAndFrames 44 * @since 1.6 45 */ 46 public ObjectReference monitor(); 47 48 /** 49 * Returns the stack depth at which this monitor was 50 * acquired by the owning thread. Returns -1 if the 51 * implementation cannot determine the stack depth 52 * (e.g., for monitors acquired by JNI MonitorEnter). 53 * @return the stack depth at which this monitor was 54 * acquired by the owning thread. 55 * @throws InvalidStackFrameException if the associated stack 56 * frame has become invalid. Once the frame's thread is resumed, 57 * the stack frame is no longer valid. 58 * @see ThreadReference#ownedMonitorsAndFrames 59 */ 60 public int stackDepth(); 61 62 /** 63 * Returns a {@link ThreadReference} object for the thread that 64 * owns the monitor. 65 * @return a {@link ThreadReference} object for the thread that 66 * owns the monitor. 67 * @throws InvalidStackFrameException if the associated stack 68 * frame has become invalid. Once the frame's thread is resumed, 69 * the stack frame is no longer valid. 70 * @see ThreadReference#frame 71 */ 72 ThreadReference thread(); 73} 74