jdk-24/test/hotspot/jtreg/serviceability/dcmd/framework/TestProcessLauncher.java

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/*
* Copyright (c) 2019, 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.
*/
import nsk.share.*;
import nsk.share.jpda.*;
import nsk.share.jdi.*;
/**
* Launches a new Java process that uses a communication pipe to interact
* with the test.
*/
public class TestProcessLauncher {
private final String className;
private final ArgumentHandler argHandler;
private IOPipe pipe;
public TestProcessLauncher(String className, ArgumentHandler argHandler) {
this.className = className;
this.argHandler = argHandler;
}
public TestProcessLauncher(String className) {
this(className, new ArgumentHandler(new String[0]));
}
public Process launch() {
String java = argHandler.getLaunchExecPath();
Log log = new Log(System.out, argHandler);
Binder binder = new Binder(argHandler, log);
binder.prepareForPipeConnection(argHandler);
String cmd = java + " " + className + " -pipe.port=" + argHandler.getPipePort();
Debugee debuggee = binder.startLocalDebugee(cmd);
debuggee.redirectOutput(log);
pipe = new IOPipe(debuggee);
String line = pipe.readln();
if (!"ready".equals(line)) {
System.out.println("Wrong reply received:" + line);
}
return debuggee.getProcess();
}
public void quit() {
if (pipe != null) {
pipe.println("quit");
}
}
}