1 /*
   2  * Copyright (c) 2005, 2013, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package org.openjdk.jmh;
  26 
  27 import org.openjdk.jmh.runner.*;
  28 import org.openjdk.jmh.runner.options.CommandLineOptionException;
  29 import org.openjdk.jmh.runner.options.CommandLineOptions;
  30 import org.openjdk.jmh.runner.options.VerboseMode;
  31 
  32 import java.io.IOException;
  33 
  34 /**
  35  * Main program entry point
  36  */
  37 public class Main {
  38 
  39     public static void main(String[] argv) throws RunnerException, IOException {
  40         try {
  41             CommandLineOptions cmdOptions = new CommandLineOptions(argv);
  42 
  43             Runner runner = new Runner(cmdOptions);
  44 
  45             if (cmdOptions.shouldHelp()) {
  46                 cmdOptions.showHelp();
  47                 return;
  48             }
  49 
  50             if (cmdOptions.shouldList()) {
  51                 runner.list();
  52                 return;
  53             }
  54 
  55             if (cmdOptions.shouldListProfilers()) {
  56                 cmdOptions.listProfilers();
  57                 return;
  58             }
  59 
  60             if (cmdOptions.shouldListResultFormats()) {
  61                 cmdOptions.listResultFormats();
  62                 return;
  63             }
  64 
  65             try {
  66                 runner.run();
  67             } catch (NoBenchmarksException e) {
  68                 System.err.println("No matching benchmarks. Miss-spelled regexp?");
  69 
  70                 if (cmdOptions.verbosity().orElse(Defaults.VERBOSITY) != VerboseMode.EXTRA) {
  71                     System.err.println("Use " + VerboseMode.EXTRA + " verbose mode to debug the pattern matching.");
  72                 } else {
  73                     runner.list();
  74                 }
  75                 System.exit(1);
  76             } catch (ProfilersFailedException e) {
  77                 // This is not exactly an error, set non-zero exit code
  78                 System.err.println(e.getMessage());
  79                 System.exit(1);
  80             } catch (RunnerException e) {
  81                 System.err.print("ERROR: ");
  82                 e.printStackTrace(System.err);
  83                 System.exit(1);
  84             }
  85 
  86         } catch (CommandLineOptionException e) {
  87             System.err.println("Error parsing command line:");
  88             System.err.println(" " + e.getMessage());
  89             System.exit(1);
  90         }
  91     }
  92 
  93 }