1 /*
2 * Copyright (c) 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.
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.FileNotFoundException;
27 import java.io.FileReader;
28 import java.io.IOException;
29 import java.io.Reader;
30 import java.nio.CharBuffer;
31 import java.util.Arrays;
32 import java.util.Scanner;
33
34 import com.oracle.java.testlibrary.Asserts;
35 import com.oracle.java.testlibrary.JDKToolFinder;
36 import com.oracle.java.testlibrary.JDKToolLauncher;
37 import com.oracle.java.testlibrary.OutputAnalyzer;
38 import com.oracle.java.testlibrary.Platform;
39 import com.oracle.java.testlibrary.ProcessTools;
40
41 /*
42 * @test
43 * @bug 6313383
44 * @key regression
45 * @summary Regression test for hprof export issue due to large heaps (>2G)
46 * @library /testlibrary
47 * @build com.oracle.java.testlibrary.* JMapHProfLargeHeapProc
48 * @run main JMapHProfLargeHeapTest
49 */
50
51 public class JMapHProfLargeHeapTest {
52 private static final String HEAP_DUMP_FILE_NAME = "heap.hprof";
53 private static final String HPROF_HEADER_1_0_1 = "JAVA PROFILE 1.0.1";
54 private static final String HPROF_HEADER_1_0_2 = "JAVA PROFILE 1.0.2";
55 private static final long M = 1024L;
56 private static final long G = 1024L * M;
57
58 public static void main(String[] args) throws Exception {
59 // If we are on MacOSX, test if JMap tool is signed, otherwise return
60 // since test will fail with privilege error.
61 if (Platform.isOSX()) {
62 String jmapToolPath = JDKToolFinder.getTestJDKTool("jmap");
63 ProcessBuilder codesignProcessBuilder = new ProcessBuilder(
64 "codesign", "-v", jmapToolPath);
65 Process codesignProcess = codesignProcessBuilder.start();
66 OutputAnalyzer analyser = new OutputAnalyzer(codesignProcess);
67 try {
68 analyser.shouldNotContain("code object is not signed at all");
69 System.out.println("Signed jmap found at: " + jmapToolPath);
70 } catch (Exception e) {
71 // Abort since we can't know if the test will work
72 System.out
73 .println("Test aborted since we are on MacOSX and the jmap tool is not signed.");
74 return;
75 }
76 }
77
78 // Small heap 22 megabytes, should create 1.0.1 file format
79 testHProfFileFormat("-Xmx1g", 22 * M, HPROF_HEADER_1_0_1);
80
81 /**
82 * This test was deliberately commented out since the test system lacks
83 * support to handle the requirements for this kind of heap size in a
84 * good way. If or when it becomes possible to run this kind of tests in
85 * the test environment the test should be enabled again.
86 * */
87 // Large heap 2,2 gigabytes, should create 1.0.2 file format
88 // testHProfFileFormat("-Xmx4g", 2 * G + 2 * M, HPROF_HEADER_1_0_2);
89 }
90
91 private static void testHProfFileFormat(String vmArgs, long heapSize,
92 String expectedFormat) throws Exception, IOException,
93 InterruptedException, FileNotFoundException {
94 ProcessBuilder procBuilder = ProcessTools.createJavaProcessBuilder(
95 vmArgs, "JMapHProfLargeHeapProc", String.valueOf(heapSize));
96 procBuilder.redirectError(ProcessBuilder.Redirect.INHERIT);
97 Process largeHeapProc = procBuilder.start();
98
99 try (Scanner largeHeapScanner = new Scanner(
100 largeHeapProc.getInputStream());) {
101 String pidstring = null;
102 while ((pidstring = largeHeapScanner.findInLine("PID\\[[0-9].*\\]")) == null) {
103 Thread.sleep(500);
104 }
105 int pid = Integer.parseInt(pidstring.substring(4,
106 pidstring.length() - 1));
107 System.out.println("Extracted pid: " + pid);
108
109 JDKToolLauncher jMapLauncher = JDKToolLauncher
110 .createUsingTestJDK("jmap");
111 jMapLauncher.addToolArg("-dump:format=b,file=" + pid + "-"
112 + HEAP_DUMP_FILE_NAME);
113 jMapLauncher.addToolArg(String.valueOf(pid));
114
115 ProcessBuilder jMapProcessBuilder = new ProcessBuilder(
116 jMapLauncher.getCommand());
117 System.out.println("jmap command: "
118 + Arrays.toString(jMapLauncher.getCommand()));
119
120 Process jMapProcess = jMapProcessBuilder.start();
121 OutputAnalyzer analyzer = new OutputAnalyzer(jMapProcess);
122 analyzer.shouldHaveExitValue(0);
123 analyzer.shouldContain(pid + "-" + HEAP_DUMP_FILE_NAME);
124 analyzer.shouldContain("Heap dump file created");
125
126 largeHeapProc.getOutputStream().write('\n');
127
128 File dumpFile = new File(pid + "-" + HEAP_DUMP_FILE_NAME);
129 Asserts.assertTrue(dumpFile.exists(), "Heap dump file not found.");
130
131 try (Reader reader = new BufferedReader(new FileReader(dumpFile))) {
132 CharBuffer buf = CharBuffer.allocate(expectedFormat.length());
133 reader.read(buf);
134 buf.clear();
135 Asserts.assertEQ(buf.toString(), expectedFormat,
136 "Wrong file format. Expected '" + expectedFormat
137 + "', but found '" + buf.toString() + "'");
138 }
139
140 System.out.println("Success!");
141
142 } finally {
143 largeHeapProc.destroyForcibly();
144 }
145 }
146 }