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ProbeExit.java
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/*
* Copyright (c) 2008, 2015, 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.btrace.samples;
import com.sun.btrace.annotations.*;
import static com.sun.btrace.BTraceUtils.*;
/**
* This program demonstrates OnExit probe.
* When some BTrace action method calls "exit(int)"
* built-in function, method annotated by @OnExit
* (if found) is called. In this method, BTrace script
* print summary information of tracing and/or do clean-up.
*/
@BTrace public class ProbeExit {
private static volatile int i;
// @OnExit is called when some BTrace method
// calls exit(int) method
@OnExit
public static void onexit(int code) {
println("BTrace program exits!");
}
// We just put @OnTimer probe and exit BTrace
// program when the count reaches 5.
@OnTimer(1000)
public static void ontime() {
println("hello");
i++;
if (i == 5) {
// note that this exits the BTrace client
// and not the traced program (which would
// be a destructive action!).
Sys.exit(0);
}
}
}