/*
* Copyright (c) 2009, 2011, 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.
*
* 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.max.tele.debug;
import com.sun.max.program.*;
/**
* Handler for an event that triggers the VM to stop execution per
* some request, for example a breakpoint or watchpoint.
*/
public interface VMTriggerEventHandler {
/**
* Perform any specific processing of a trigger event, for example a breakpoint
* or watchpoint, and decide
* whether to stop VM execution or to resume execution silently. The default is
* to stop VM execution.
*
* @param teleNativeThread the VM thread that triggered this event.
* @return true if VM execution should really stop; false if VM execution should resume silently.
*/
boolean handleTriggerEvent(TeleNativeThread teleNativeThread);
public static final class Static {
private static final int TRACE_VALUE = 1;
private static final String tracePrefix = "[VMTriggerEventHandler] ";
private Static() {
}
/**
* A default handler for VM triggered VM events that always returns true.
*/
public static VMTriggerEventHandler ALWAYS_TRUE = new VMTriggerEventHandler() {
public boolean handleTriggerEvent(TeleNativeThread teleNativeThread) {
Trace.line(TRACE_VALUE, tracePrefix + "default handler, TRUE");
return true;
}
};
}
}