/* * Copyright (c) 2005, 2008, 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.tools.jdi;import com.sun.jdi.*;public class MonitorInfoImpl extends MirrorImpl implements MonitorInfo, ThreadListener { /* Once false, monitorInfo should not be used. * access synchronized on (vm.state()) */ private boolean isValid = true; ObjectReference monitor; ThreadReference thread; int stack_depth; MonitorInfoImpl(VirtualMachine vm, ObjectReference mon, ThreadReferenceImpl thread, int dpth) { super(vm); this.monitor = mon; this.thread = thread; this.stack_depth = dpth; thread.addListener(this); } /* * ThreadListener implementation * Must be synchronized since we must protect against * sending defunct (isValid == false) stack ids to the back-end. */ public boolean threadResumable(ThreadAction action) { synchronized (vm.state()) { if (isValid) { isValid = false; return false; /* remove this stack frame as a listener */ } else { throw new InternalException( "Invalid stack frame thread listener"); } } } private void validateMonitorInfo() { if (!isValid) { throw new InvalidStackFrameException("Thread has been resumed"); } } public ObjectReference monitor() { validateMonitorInfo(); return monitor; } public int stackDepth() { validateMonitorInfo(); return stack_depth; } public ThreadReference thread() { validateMonitorInfo(); return thread; }}
/*
* Copyright (c) 2005, 2008, 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.tools.jdi;
import com.sun.jdi.*;
public class MonitorInfoImpl extends MirrorImpl
implements MonitorInfo, ThreadListener {
/* Once false, monitorInfo should not be used.
* access synchronized on (vm.state())
*/
private boolean isValid = true;
ObjectReference monitor;
ThreadReference thread;
int stack_depth;
MonitorInfoImpl(VirtualMachine vm, ObjectReference mon,
ThreadReferenceImpl thread, int dpth) {
super(vm);
this.monitor = mon;
this.thread = thread;
this.stack_depth = dpth;
thread.addListener(this);
}
/*
* ThreadListener implementation
* Must be synchronized since we must protect against
* sending defunct (isValid == false) stack ids to the back-end.
*/
public boolean threadResumable(ThreadAction action) {
synchronized (vm.state()) {
if (isValid) {
isValid = false;
return false; /* remove this stack frame as a listener */
} else {
throw new InternalException(
"Invalid stack frame thread listener");
}
}
}
private void validateMonitorInfo() {
if (!isValid) {
throw new InvalidStackFrameException("Thread has been resumed");
}
}
public ObjectReference monitor() {
validateMonitorInfo();
return monitor;
}
public int stackDepth() {
validateMonitorInfo();
return stack_depth;
}
public ThreadReference thread() {
validateMonitorInfo();
return thread;
}
}