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 import java.io.BufferedReader;
25 import java.io.File;
26 import java.io.FileInputStream;
27 import java.io.InputStreamReader;
28 import java.util.regex.Pattern;
29
30 import jdk.test.lib.process.OutputAnalyzer;
31 import jdk.test.lib.Platform;
32 import jdk.test.lib.process.ProcessTools;
33
34 /*
35 * @test
36 * @bug 8167108
37 * @summary Nested ThreadsListHandle info should be in error handling output.
38 * @modules java.base/jdk.internal.misc
39 * @library /test/lib
40 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+EnableThreadSMRStatistics NestedThreadsListHandleInErrorHandlingTest
41 */
42
43 /*
44 * This test was created using SafeFetchInErrorHandlingTest.java
45 * as a guide.
46 */
47 public class NestedThreadsListHandleInErrorHandlingTest {
48 public static void main(String[] args) throws Exception {
49
50 if (!Platform.isDebugBuild()) {
51 // -XX:ErrorHandlerTest=N option requires debug bits.
52 return;
53 }
54
55 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
56 "-XX:+UnlockDiagnosticVMOptions",
57 "-Xmx100M",
58 "-XX:ErrorHandlerTest=17",
59 "-XX:-CreateCoredumpOnCrash",
60 "-version");
61
62 OutputAnalyzer output_detail = new OutputAnalyzer(pb.start());
63
64 // We should have crashed with a specific fatal error:
65 output_detail.shouldMatch("# A fatal error has been detected by the Java Runtime Environment:.*");
66 System.out.println("Found fatal error header.");
67 output_detail.shouldMatch("# +fatal error: Force crash with a nested ThreadsListHandle.");
68 System.out.println("Found specific fatal error.");
69
70 // Extract hs_err_pid file.
71 String hs_err_file = output_detail.firstMatch("# *(\\S*hs_err_pid\\d+\\.log)", 1);
72 if (hs_err_file == null) {
73 throw new RuntimeException("Did not find hs_err_pid file in output.\n");
74 }
75
76 File f = new File(hs_err_file);
77 if (!f.exists()) {
78 throw new RuntimeException("hs_err_pid file missing at "
79 + f.getAbsolutePath() + ".\n");
80 }
81
82 System.out.println("Found hs_err_pid file. Scanning...");
83
84 FileInputStream fis = new FileInputStream(f);
85 BufferedReader br = new BufferedReader(new InputStreamReader(fis));
86 String line = null;
87
88 Pattern [] pattern = new Pattern[] {
89 // The "Current thread" line should show a hazard ptr and
90 // a nested hazard ptr:
91 Pattern.compile("Current thread .* _threads_hazard_ptr=0x[0-9A-Fa-f][0-9A-Fa-f]*, _nested_threads_hazard_ptr_cnt=1, _nested_threads_hazard_ptrs=0x.*"),
92 // We should have a section of Threads class SMR info:
93 Pattern.compile("Threads class SMR info:"),
94 // We should have one nested ThreadsListHandle:
95 Pattern.compile(".*, _smr_nested_thread_list_max=1"),
96 // The current thread (marked with '=>') in the threads list
97 // should show a hazard ptr:
98 Pattern.compile("=>.* JavaThread \"main\" .*_threads_hazard_ptr=0x[0-9A-Fa-f][0-9A-Fa-f]*, _nested_threads_hazard_ptr_cnt=1, _nested_threads_hazard_ptrs=0x.*"),
99 };
100 int currentPattern = 0;
101
102 String lastLine = null;
103 while ((line = br.readLine()) != null) {
104 if (currentPattern < pattern.length) {
105 if (pattern[currentPattern].matcher(line).matches()) {
106 System.out.println("Found: " + line + ".");
107 currentPattern++;
108 }
109 }
110 lastLine = line;
111 }
112 br.close();
113
114 if (currentPattern < pattern.length) {
115 throw new RuntimeException("hs_err_pid file incomplete (first missing pattern: " + currentPattern + ")");
116 }
117
118 if (!lastLine.equals("END.")) {
119 throw new RuntimeException("hs-err file incomplete (missing END marker.)");
120 } else {
121 System.out.println("End marker found.");
122 }
123
124 System.out.println("Done scanning hs_err_pid_file.");
125 System.out.println("PASSED.");
126 }
127 }