1 /*
2 * Copyright (c) 2017, 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 * @test
26 * @summary Test for repeated attaches and detaches
27 * @library /test/lib
28 * @run main TestAttachDetach
29 */
30
31 import java.io.BufferedReader;
32 import java.io.IOException;
33 import java.io.OutputStream;
34 import java.io.InputStreamReader;
35 import java.util.ArrayList;
36 import java.util.List;
37 import java.util.Arrays;
38 import java.util.Optional;
39 import jdk.test.lib.JDKToolLauncher;
40 import jdk.test.lib.Utils;
41 import jdk.test.lib.process.OutputAnalyzer;
42 import jdk.test.lib.process.ProcessTools;
43 import jdk.test.lib.apps.LingeredApp;
44 import jdk.test.lib.Platform;
45 import jdk.test.lib.JDKToolLauncher;
46
47 public class TestAttachDetach {
48
49 private static LingeredApp theApp = null;
50
51 private static JDKToolLauncher createSALauncher() {
52 JDKToolLauncher launcher = null;
53 launcher = JDKToolLauncher.createUsingTestJDK("jhsdb");
54
55 return launcher;
56 }
57
58 public static void launchCLHSDB()
59 throws IOException {
60
61 System.out.println("Starting LingeredApp");
62 try {
63 theApp = LingeredApp.startApp();
64
65 System.out.println("Starting clhsdb against " + theApp.getPid());
66 JDKToolLauncher launcher = createSALauncher();
67 launcher.addToolArg("clhsdb");
68 launcher.addToolArg("--pid=" + Long.toString(theApp.getPid()));
69
70 ProcessBuilder processBuilder = new ProcessBuilder(launcher.getCommand());
71 Process toolProcess = processBuilder.start();
72
73 try (OutputStream out = toolProcess.getOutputStream()) {
74 out.write("detach\n".getBytes());
75 out.write("reattach\n".getBytes());
76 out.write("threads\n".getBytes());
77 out.write("detach\n".getBytes());
78 out.write("quit\n".getBytes());
79 }
80
81 Exception unexpected = null;
82 try (BufferedReader reader =
83 new BufferedReader(new InputStreamReader(toolProcess.getErrorStream()))) {
84 String line;
85 int numberOfMatches = 0;
86
87 while ((line = reader.readLine()) != null) {
88 line = line.trim();
89 System.out.println(line);
90
91 if (line.contains("Attaching to process")) {
92 numberOfMatches++;
93 }
94 }
95 if (numberOfMatches != 2) {
96 unexpected =
97 new RuntimeException(
98 "The String 'Attaching to process' appears " +
99 numberOfMatches + " number of times");
100 }
101 }
102
103 if (unexpected == null) {
104 try (BufferedReader reader =
105 new BufferedReader(new InputStreamReader(toolProcess.getInputStream()))) {
106 String line;
107 boolean found = false;
108
109 while ((line = reader.readLine()) != null) {
110 line = line.trim();
111 System.out.println(line);
112 if (line.contains("Last_Java_SP")) {
113 found = true;
114 break;
115 }
116 }
117 if (found == false) {
118 unexpected =
119 new RuntimeException("Output from the 'threads' command not found");
120 }
121 }
122 }
123
124 toolProcess.waitFor();
125
126 if (toolProcess.exitValue() != 0) {
127 throw new RuntimeException("FAILED CLHSDB terminated with non-zero exit code "
128 + toolProcess.exitValue());
129 }
130
131 if (unexpected != null) {
132 throw unexpected;
133 }
134
135 } catch (Exception ex) {
136 throw new RuntimeException("Test ERROR " + ex, ex);
137 } finally {
138 LingeredApp.stopApp(theApp);
139 }
140 }
141
142 public static void main(String[] args) throws Exception {
143
144 if (!Platform.shouldSAAttach()) {
145 // Silently skip the test if we don't have enough permissions to attach
146 System.err.println("Error! Insufficient permissions to attach.");
147 return;
148 }
149
150 launchCLHSDB();
151
152 // The test throws RuntimeException on error.
153 // IOException is thrown if LingeredApp can't start because of some bad
154 // environment condition
155 System.out.println("Test PASSED");
156 }
157 }