/* * Copyright (c) 1998, 2001, 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.request; import com.sun.jdi.*; /** * Identifies a {@link Location} in the target VM at which * execution should be stopped. When an enabled BreakpointRequest is * satisfied, an * {@link com.sun.jdi.event.EventSet event set} containing an * {@link com.sun.jdi.event.BreakpointEvent BreakpointEvent} * will be placed on the * {@link com.sun.jdi.event.EventQueue EventQueue} and * the application is interrupted. The collection of existing breakpoints is * managed by the {@link EventRequestManager} * * @see Location * @see com.sun.jdi.event.BreakpointEvent * @see com.sun.jdi.event.EventQueue * @see EventRequestManager * * @author Robert Field * @since  1.3 */public interface BreakpointRequest extends EventRequest, Locatable {     /**     * Returns the location of the requested breakpoint.     *     * @return the {@link Location} where this breakpoint has been set.     */    Location location();     /**     * Restricts the events generated by this request to those in     * the given thread.     * @param thread the thread to filter on.     * @throws InvalidRequestStateException if this request is currently     * enabled or has been deleted.     * Filters may be added only to disabled requests.     */    void addThreadFilter(ThreadReference thread);     /**     * Restricts the events generated by this request to those in     * which the currently executing instance is the object     * specified.     * <P>     * Not all targets support this operation.     * Use {@link VirtualMachine#canUseInstanceFilters()}     * to determine if the operation is supported.     * @since 1.4     * @param instance the object which must be the current instance     * in order to pass this filter.     * @throws java.lang.UnsupportedOperationException if     * the target virtual machine does not support this     * operation.     * @throws InvalidRequestStateException if this request is currently     * enabled or has been deleted.     * Filters may be added only to disabled requests.     */    void addInstanceFilter(ObjectReference instance);}