1 /*
   2  * Copyright (c) 2013, 2018, 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 
  25 /*
  26  * @test
  27  *
  28  * @summary converted from VM Testbase metaspace/shrink_grow/ShrinkGrowMultiJVM.
  29  * VM Testbase keywords: [nonconcurrent]
  30  *
  31  * @requires vm.opt.final.ClassUnloading
  32  * @library /vmTestbase /test/lib
  33  * @run driver jdk.test.lib.FileInstaller . .
  34  * @build metaspace.shrink_grow.ShrinkGrowMultiJVM.ShrinkGrowMultiJVM
  35  * @run driver metaspace.shrink_grow.ShrinkGrowMultiJVM.ShrinkGrowMultiJVM
  36  */
  37 
  38 package metaspace.shrink_grow.ShrinkGrowMultiJVM;
  39 
  40 import jdk.test.lib.Utils;
  41 
  42 import java.io.IOException;
  43 import java.io.InputStream;
  44 import java.io.OutputStream;
  45 import java.nio.file.Paths;
  46 import java.util.ArrayList;
  47 import java.util.List;
  48 
  49 /**
  50  * This test starts several JVMs and run ShrinkGrow metaspace test.
  51  *
  52  * It expected that all the parameters on start new processes are given
  53  * in the command line.
  54  */
  55 public class ShrinkGrowMultiJVM {
  56     private static final String[] TEST_ARGS = {
  57             Paths.get(Utils.TEST_JDK)
  58                  .resolve("bin")
  59                  .resolve("java")
  60                  .toAbsolutePath()
  61                  .toString(),
  62             "-Xlog:gc:gc_$i.log", // LOG_GC_ARG_INDEX
  63             "-XX:MetaspaceSize=10m",
  64             "-XX:MaxMetaspaceSize=20m",
  65             "-cp",
  66             Utils.TEST_CLASS_PATH
  67     };
  68     private static final int LOG_GC_ARG_INDEX = 1;
  69     public static void main(String argv[]) {
  70         String[] testJavaOpts = Utils.getTestJavaOpts();
  71         String[] args = new String[TEST_ARGS.length + testJavaOpts.length + 2];
  72         System.arraycopy(TEST_ARGS, 0, args, 0, TEST_ARGS.length);
  73         System.arraycopy(testJavaOpts, 0, args, TEST_ARGS.length, testJavaOpts.length);
  74         args[args.length - 2] = metaspace.shrink_grow.ShrinkGrowTest.ShrinkGrowTest.class.getCanonicalName();
  75         args[args.length - 1] = "jvm#$i";
  76 
  77         for (int i = 0; i < args.length; ++i) {
  78             System.out.println("%arg #" + i + ": " + args[i]);
  79         }
  80 
  81         List<Process> list = new ArrayList<>();
  82         for (int i = 0; i < 5; i++) {
  83             // will be used as jvm id
  84             args[args.length - 1] = "jvm#" + i;
  85             args[LOG_GC_ARG_INDEX] = "-Xlog:gc:gc_" + i + ".log";
  86             ProcessBuilder pb = new ProcessBuilder(args);
  87             try {
  88                 Process p = pb.start();
  89                 // Redirect.INHERIT doesn't work w/ @run driver
  90                 new Thread(() -> copy(p.getInputStream(), System.out)).start();
  91                 new Thread(() -> copy(p.getErrorStream(), System.out)).start();
  92                 list.add(p);
  93                 System.out.println("=== process #" + i + " started");
  94             } catch (IOException e) {
  95                 throw new Error("Failed to start process " + i, e);
  96             }
  97         }
  98         int failedCount = 0;
  99         for (int i = 0; i < list.size(); i++) {
 100             Process p = list.get(i);
 101             try {
 102                 int exitCode = p.waitFor();
 103                 if (exitCode != 0) {
 104                     failedCount++;
 105                     System.out.println("=== process #" + i + " exitCode=" + exitCode);
 106                 }
 107             } catch (InterruptedException e) {
 108                 failedCount++;
 109                 System.out.println("=== process #" + i + " waitFor failed");
 110                 e.printStackTrace(System.out);
 111             }
 112         }
 113         if (failedCount != 0) {
 114             throw new AssertionError(failedCount + " out of " + list.size() + " tests failed");
 115         }
 116     }
 117 
 118     private static void copy(InputStream is, OutputStream os) {
 119         byte[] buffer = new byte[1024];
 120         int n;
 121         try (InputStream close = is) {
 122             while ((n = is.read(buffer)) != -1) {
 123                 os.write(buffer, 0, n);
 124             }
 125             os.flush();
 126         } catch (IOException e) {
 127             e.printStackTrace();
 128         }
 129     }
 130 }