1 /*
2 * Copyright (c) 2015, 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 * @bug 8042397
27 * @summary Unit test for jmap utility test heap configuration reader
28 * @library /lib/testlibrary
29 * @modules java.management
30 * @build jdk.testlibrary.*
31 * @build JMapHeapConfigTest LingeredApp TmtoolTestScenario
32 * @run main JMapHeapConfigTest
33 */
34 import java.io.IOException;
35 import java.math.BigDecimal;
36 import java.util.ArrayList;
37 import java.util.HashMap;
38 import java.util.List;
39 import java.util.Map;
40 import jdk.testlibrary.Utils;
41 import jdk.testlibrary.Platform;
42
43 public class JMapHeapConfigTest {
44
45 static final String expectedJMapValues[] = {
46 "MinHeapFreeRatio",
47 "MaxHeapFreeRatio",
48 "MaxHeapSize",
49 "NewSize",
50 "MaxNewSize",
51 "OldSize",
52 "NewRatio",
53 "SurvivorRatio",
54 "MetaspaceSize",
55 "CompressedClassSpaceSize",
56 "G1HeapRegionSize"};
57
58 // ignoring MaxMetaspaceSize
59
60 static final String desiredMaxHeapSize = "-Xmx128m";
61
62 private static Map<String, String> parseJMapOutput(List<String> jmapOutput) {
63 Map<String, String> heapConfigMap = new HashMap<String, String>();
64 boolean shouldParse = false;
65
66 for (String line : jmapOutput) {
67 line = line.trim();
68
69 if (line.startsWith("Heap Configuration:")) {
70 shouldParse = true;
71 continue;
72 }
73
74 if (line.startsWith("Heap Usage:")) {
75 shouldParse = false;
76 continue;
77 }
78
79 if (shouldParse && !line.equals("")) {
80 String[] lv = line.split("\\s+");
81 try {
82 heapConfigMap.put(lv[0], lv[2]);
83 } catch (ArrayIndexOutOfBoundsException ex) {
84 // Ignore mailformed lines
85 }
86 }
87 }
88 return heapConfigMap;
89 }
90
91 // Compare stored values
92 private static void compareValues(Map<String, String> parsedJMapOutput, Map<String, String> parsedVmOutput) {
93 for (String key : expectedJMapValues) {
94 try {
95 String jmapVal = parsedJMapOutput.get(key);
96 if (jmapVal == null) {
97 throw new RuntimeException("Key '" + key + "' doesn't exists in jmap output");
98 }
99
100 String vmVal = parsedVmOutput.get(key);
101 if (vmVal == null) {
102 throw new RuntimeException("Key '" + key + "' doesn't exists in vm output");
103 }
104
105 if (new BigDecimal(jmapVal).compareTo(new BigDecimal(vmVal)) != 0) {
106 throw new RuntimeException(String.format("Key %s doesn't match %s vs %s", key, vmVal, jmapVal));
107 }
108 } catch (NumberFormatException ex) {
109 throw new RuntimeException("Unexpected key '" + key + "' value", ex);
110 }
111 }
112 }
113
114 public static void main(String[] args) throws Exception {
115 System.out.println("Starting JMapHeapConfigTest");
116
117 if (!Platform.shouldSAAttach()) {
118 // Silently skip the test if we don't have enough permissions to attach
119 System.err.println("Error! Insufficient permissions to attach.");
120 return;
121 }
122
123 if (!LingeredApp.isLastModifiedWorking()) {
124 // Exact behaviour of the test depends to operating system and the test nature,
125 // so just print the warning and continue
126 System.err.println("Warning! Last modified time doesn't work.");
127 }
128
129 boolean mx_found = false;
130 List<String> jvmOptions = Utils.getVmOptions();
131 for (String option : jvmOptions) {
132 if (option.startsWith("-Xmx")) {
133 System.out.println("INFO: maximum heap size set by JTREG as " + option);
134 mx_found = true;
135 break;
136 }
137 }
138
139 // Forward vm options to LingeredApp
140 ArrayList<String> cmd = new ArrayList();
141 cmd.addAll(Utils.getVmOptions());
142 if (!mx_found) {
143 cmd.add(desiredMaxHeapSize);
144 System.out.println("INFO: maximum heap size set explicitly as " + desiredMaxHeapSize);
145 }
146 cmd.add("-XX:+PrintFlagsFinal");
147
148 TmtoolTestScenario tmt = TmtoolTestScenario.create("jmap", "-heap");
149 int exitcode = tmt.launch(cmd);
150 if (exitcode != 0) {
151 throw new RuntimeException("Test FAILED jmap exits with non zero exit code " + exitcode);
152 }
153
154 Map<String,String> parsedJmapOutput = parseJMapOutput(tmt.getToolOutput());
155 Map<String,String> parsedVMOutput = tmt.parseFlagsFinal();
156
157 compareValues(parsedJmapOutput, parsedVMOutput);
158
159 // If test fails it throws RuntimeException
160 System.out.println("Test PASSED");
161 }
162 }