PidJcmdExecutor.java revision 2224:2a8815d86b93 
1/*
2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24package jdk.test.lib.dcmd;
25
26import jdk.test.lib.process.ProcessTools;
27
28import java.util.Arrays;
29import java.util.List;
30
31/**
32 * Executes Diagnostic Commands on the target VM (specified by pid) using the jcmd tool
33 */
34public class PidJcmdExecutor extends JcmdExecutor {
35    protected final long pid;
36
37    /**
38     * Instantiates a new PidJcmdExecutor targeting the current VM
39     */
40    public PidJcmdExecutor() {
41        super();
42        try {
43            pid = ProcessTools.getProcessId();
44        } catch (Exception e) {
45            throw new CommandExecutorException("Could not determine own pid", e);
46        }
47    }
48
49    /**
50     * Instantiates a new PidJcmdExecutor targeting the VM indicated by the given pid
51     *
52     * @param target Pid of the target VM
53     */
54    public PidJcmdExecutor(String target) {
55        super();
56        pid = Long.valueOf(target);
57    }
58
59    protected List<String> createCommandLine(String cmd) throws CommandExecutorException {
60        return Arrays.asList(jcmdBinary, Long.toString(pid), cmd);
61    }
62
63}
64