ExceptionEvent.java revision 2362
1472N/A * Copyright (c) 1998, 1999, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 0N/A * published by the Free Software Foundation. Oracle designates this 0N/A * particular file as subject to the "Classpath" exception as provided 0N/A * by Oracle in the LICENSE file that accompanied this code. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 1472N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1472N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 0N/A * or visit www.oracle.com if you need additional information or have any 0N/A * Notification of an exception in the target VM. When an exception 0N/A * is thrown which satisfies a currently enabled 0N/A * {@link com.sun.jdi.request.ExceptionRequest exception request}, 0N/A * an {@link EventSet event set} 1387N/A * containing an instance of this class will be added 0N/A * to the VM's event queue. 0N/A * If the exception is thrown from a non-native method, 0N/A * the exception event is generated at the location where the 0N/A * exception is thrown. 0N/A * If the exception is thrown from a native method, the exception event 0N/A * is generated at the first non-native location reached after the exception 0N/A * @author Robert Field 0N/A * Gets the thrown exception object. The exception object is 0N/A * an instance of {@link java.lang.Throwable} or a subclass in the 0N/A * @return an {@link ObjectReference} which mirrors the thrown object in * Gets the location where the exception will be caught. An exception * is considered to be caught if, at the point of the throw, the * current location is dynamically enclosed in a try statement that * handles the exception. (See the JVM specification for details). * If there is such a try statement, the catch location is the * first code index of the appropriate catch clause. * If there are native methods in the call stack at the time of the * exception, there are important restrictions to note about the * returned catch location. In such cases, * it is not possible to predict whether an exception will be handled * by some native method on the call stack. * Thus, it is possible that exceptions considered uncaught * here will, in fact, be handled by a native method and not cause * termination of the target VM. Furthermore, it cannot be assumed that the * catch location returned here will ever be reached by the throwing * a native frame between the current location and the catch location, * the exception might be handled and cleared in that native method * Note that the compiler can generate try-catch blocks in some cases * where they are not explicit in the source code; for example, * the code generated for <code>synchronized</code> and * <code>finally</code> blocks can contain implicit try-catch blocks. * If such an implicitly generated try-catch is * present on the call stack at the time of the throw, the exception * will be considered caught even though it appears to be uncaught from * examination of the source code. * @return the {@link Location} where the exception will be caught or null if * the exception is uncaught.