/* * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.jdi; /** * Information about a monitor owned by a thread. * * @author Swamy Venkataramanappa * @since  1.6 */ public interface MonitorInfo extends Mirror {     /**     * Returns the {@link ObjectReference} object for the monitor.     * @return the {@link ObjectReference} object for the monitor.     * @throws InvalidStackFrameException if the associated stack     * frame has become invalid. Once the frame's thread is resumed,     * the stack frame is no longer valid.     * @see ThreadReference#ownedMonitorsAndFrames     * @since 1.6     */    public ObjectReference monitor();     /**     * Returns the stack depth at which this monitor was     * acquired by the owning thread. Returns -1 if the     * implementation cannot determine the stack depth     * (e.g., for monitors acquired by JNI MonitorEnter).     * @return the stack depth at which this monitor was     * acquired by the owning thread.     * @throws InvalidStackFrameException if the associated stack     * frame has become invalid. Once the frame's thread is resumed,     * the stack frame is no longer valid.     * @see ThreadReference#ownedMonitorsAndFrames     */    public int stackDepth();     /**     * Returns a {@link ThreadReference} object for the thread that     * owns the monitor.     * @return a {@link ThreadReference} object for the thread that     * owns the monitor.     * @throws InvalidStackFrameException if the associated stack     * frame has become invalid. Once the frame's thread is resumed,     * the stack frame is no longer valid.     * @see ThreadReference#frame     */    ThreadReference thread();}