1 /*
2 * Copyright (c) 2013, 2016, 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 jdk.test.lib.Asserts;
35 import jdk.test.lib.JDKToolLauncher;
36 import jdk.test.lib.Platform;
37 import jdk.test.lib.process.OutputAnalyzer;
38 import jdk.test.lib.process.ProcessTools;
39
40 /*
41 * @test
42 * @bug 6313383
43 * @key regression
44 * @summary Regression test for hprof export issue due to large heaps (>2G)
45 * @library /test/lib
46 * @modules java.base/jdk.internal.misc
47 * java.compiler
48 * java.management/sun.management
49 * jdk.jvmstat/sun.jvmstat.monitor
50 * @build JMapHProfLargeHeapProc
51 * @run main JMapHProfLargeHeapTest
52 */
53
54 public class JMapHProfLargeHeapTest {
55 private static final String HEAP_DUMP_FILE_NAME = "heap.bin";
56 private static final String HPROF_HEADER_1_0_1 = "JAVA PROFILE 1.0.1";
57 private static final String HPROF_HEADER_1_0_2 = "JAVA PROFILE 1.0.2";
58 private static final long M = 1024L;
59 private static final long G = 1024L * M;
60
61 public static void main(String[] args) throws Exception {
62 if (!Platform.shouldSAAttach()) {
63 System.out.println("SA attach not expected to work - test skipped.");
64 return;
65 }
66
67 // All heap dumps should create 1.0.2 file format
68 // Hotspot internal heapdumper always use HPROF_HEADER_1_0_2 format,
69 // but SA heapdumper still use HPROF_HEADER_1_0_1 for small heaps
70 testHProfFileFormat("-Xmx1g", 22 * M, HPROF_HEADER_1_0_1);
71
72 /**
73 * This test was deliberately commented out since the test system lacks
74 * support to handle the requirements for this kind of heap size in a
75 * good way. If or when it becomes possible to run this kind of tests in
76 * the test environment the test should be enabled again.
77 * */
78 // Large heap 2,2 gigabytes, should create 1.0.2 file format
79 // testHProfFileFormat("-Xmx4g", 2 * G + 2 * M, HPROF_HEADER_1_0_2);
80 }
81
82 private static void testHProfFileFormat(String vmArgs, long heapSize,
83 String expectedFormat) throws Exception, IOException,
84 InterruptedException, FileNotFoundException {
85 ProcessBuilder procBuilder = ProcessTools.createJavaProcessBuilder(
86 "--add-exports=java.management/sun.management=ALL-UNNAMED",
87 "--add-opens=java.management/sun.management=ALL-UNNAMED",
88 vmArgs, "JMapHProfLargeHeapProc", String.valueOf(heapSize));
89 procBuilder.redirectError(ProcessBuilder.Redirect.INHERIT);
90 Process largeHeapProc = procBuilder.start();
91
92 try (Scanner largeHeapScanner = new Scanner(
93 largeHeapProc.getInputStream());) {
94 String pidstring = null;
95 if (!largeHeapScanner.hasNext()) {
96 throw new RuntimeException ("Test failed: could not open largeHeapScanner.");
97 }
98 while ((pidstring = largeHeapScanner.findInLine("PID\\[[0-9].*\\]")) == null) {
99 Thread.sleep(500);
100 }
101 int pid = Integer.parseInt(pidstring.substring(4,
102 pidstring.length() - 1));
103 System.out.println("Extracted pid: " + pid);
104
105 JDKToolLauncher jMapLauncher = JDKToolLauncher
106 .createUsingTestJDK("jhsdb");
107 jMapLauncher.addToolArg("jmap");
108 jMapLauncher.addToolArg("--binaryheap");
109 jMapLauncher.addToolArg("--pid");
110 jMapLauncher.addToolArg(String.valueOf(pid));
111
112 ProcessBuilder jMapProcessBuilder = new ProcessBuilder(
113 jMapLauncher.getCommand());
114 System.out.println("jmap command: "
115 + Arrays.toString(jMapLauncher.getCommand()));
116
117 Process jMapProcess = jMapProcessBuilder.start();
118 OutputAnalyzer analyzer = new OutputAnalyzer(jMapProcess);
119 analyzer.shouldHaveExitValue(0);
120 analyzer.shouldContain(HEAP_DUMP_FILE_NAME);
121
122 largeHeapProc.getOutputStream().write('\n');
123
124 File dumpFile = new File(HEAP_DUMP_FILE_NAME);
125 Asserts.assertTrue(dumpFile.exists(), "Heap dump file not found.");
126
127 try (Reader reader = new BufferedReader(new FileReader(dumpFile))) {
128 CharBuffer buf = CharBuffer.allocate(expectedFormat.length());
129 reader.read(buf);
130 buf.clear();
131 Asserts.assertEQ(buf.toString(), expectedFormat,
132 "Wrong file format. Expected '" + expectedFormat
133 + "', but found '" + buf.toString() + "'");
134 }
135
136 System.out.println("Success!");
137
138 } finally {
139 largeHeapProc.destroyForcibly();
140 }
141 }
142 }