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 import java.io.IOException;
25 import java.math.BigDecimal;
26 import java.util.ArrayList;
27 import java.util.HashMap;
28 import java.util.List;
29 import java.util.Map;
30
31 import jdk.test.lib.apps.LingeredApp;
32 import jdk.testlibrary.Utils;
33 import jdk.testlibrary.Platform;
34
35 /*
36 * @test
37 * @bug 8042397
38 * @summary Unit test for jmap utility test heap configuration reader
39 * @library /test/lib/share/classes
40 * @library /lib/testlibrary
41 * @modules java.management
42 * @build jdk.testlibrary.*
43 * @build jdk.test.lib.apps.*
44 * @build JMapHeapConfigTest TmtoolTestScenario
45 * @run main JMapHeapConfigTest
46 */
47 public class JMapHeapConfigTest {
48
49 static final String expectedJMapValues[] = {
50 "MinHeapFreeRatio",
51 "MaxHeapFreeRatio",
52 "MaxHeapSize",
53 "NewSize",
54 "MaxNewSize",
55 "OldSize",
56 "NewRatio",
57 "SurvivorRatio",
58 "MetaspaceSize",
59 "CompressedClassSpaceSize",
60 "G1HeapRegionSize"};
61
62 // ignoring MaxMetaspaceSize
63
64 static final String desiredMaxHeapSize = "-Xmx128m";
65
66 private static Map<String, String> parseJMapOutput(List<String> jmapOutput) {
67 Map<String, String> heapConfigMap = new HashMap<String, String>();
68 boolean shouldParse = false;
69
70 for (String line : jmapOutput) {
71 line = line.trim();
72
73 if (line.startsWith("Heap Configuration:")) {
74 shouldParse = true;
75 continue;
76 }
77
78 if (line.startsWith("Heap Usage:")) {
79 shouldParse = false;
80 continue;
81 }
82
83 if (shouldParse && !line.equals("")) {
84 String[] lv = line.split("\\s+");
85 try {
86 heapConfigMap.put(lv[0], lv[2]);
87 } catch (ArrayIndexOutOfBoundsException ex) {
88 // Ignore mailformed lines
89 }
90 }
91 }
92 return heapConfigMap;
93 }
94
95 // Compare stored values
96 private static void compareValues(Map<String, String> parsedJMapOutput, Map<String, String> parsedVmOutput) {
97 for (String key : expectedJMapValues) {
98 try {
99 String jmapVal = parsedJMapOutput.get(key);
100 if (jmapVal == null) {
101 throw new RuntimeException("Key '" + key + "' doesn't exists in jmap output");
102 }
103
104 String vmVal = parsedVmOutput.get(key);
105 if (vmVal == null) {
106 throw new RuntimeException("Key '" + key + "' doesn't exists in vm output");
107 }
108
109 if (new BigDecimal(jmapVal).compareTo(new BigDecimal(vmVal)) != 0) {
110 throw new RuntimeException(String.format("Key %s doesn't match %s vs %s", key, vmVal, jmapVal));
111 }
112 } catch (NumberFormatException ex) {
113 throw new RuntimeException("Unexpected key '" + key + "' value", ex);
114 }
115 }
116 }
117
118 public static void main(String[] args) throws Exception {
119 System.out.println("Starting JMapHeapConfigTest");
120
121 if (!Platform.shouldSAAttach()) {
122 // Silently skip the test if we don't have enough permissions to attach
123 System.err.println("Error! Insufficient permissions to attach.");
124 return;
125 }
126
127 if (!LingeredApp.isLastModifiedWorking()) {
128 // Exact behaviour of the test depends to operating system and the test nature,
129 // so just print the warning and continue
130 System.err.println("Warning! Last modified time doesn't work.");
131 }
132
133 boolean mx_found = false;
134 List<String> jvmOptions = Utils.getVmOptions();
135 for (String option : jvmOptions) {
136 if (option.startsWith("-Xmx")) {
137 System.out.println("INFO: maximum heap size set by JTREG as " + option);
138 mx_found = true;
139 break;
140 }
141 }
142
143 // Forward vm options to LingeredApp
144 ArrayList<String> cmd = new ArrayList();
145 cmd.addAll(Utils.getVmOptions());
146 if (!mx_found) {
147 cmd.add(desiredMaxHeapSize);
148 System.out.println("INFO: maximum heap size set explicitly as " + desiredMaxHeapSize);
149 }
150 cmd.add("-XX:+PrintFlagsFinal");
151
152 TmtoolTestScenario tmt = TmtoolTestScenario.create("jmap", "-heap");
153 int exitcode = tmt.launch(cmd);
154 if (exitcode != 0) {
155 throw new RuntimeException("Test FAILED jmap exits with non zero exit code " + exitcode);
156 }
157
158 Map<String,String> parsedJmapOutput = parseJMapOutput(tmt.getToolOutput());
159 Map<String,String> parsedVMOutput = tmt.parseFlagsFinal();
160
161 compareValues(parsedJmapOutput, parsedVMOutput);
162
163 // If test fails it throws RuntimeException
164 System.out.println("Test PASSED");
165 }
166 }