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 
  24 package jdk.test.lib.dcmd;
  25 
  26 import jdk.test.lib.process.ProcessTools;
  27 
  28 import java.util.Arrays;
  29 import java.util.List;
  30 
  31 /**
  32  * Executes Diagnostic Commands on the target VM (specified by pid) using the jcmd tool
  33  */
  34 public 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 }