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