1 /*
2 * Copyright (c) 2015, 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.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.test.lib.Platform;
34
35 /*
36 * @test
37 * @bug 8042397
38 * @summary Unit test for jmap utility test heap configuration reader
39 *
40 * @library /test/lib
41 * @library /lib/testlibrary
42 * @modules jdk.hotspot.agent/sun.jvm.hotspot
43 * java.management
44 *
45 * @build JMapHeapConfigTest TmtoolTestScenario
46 * @run main JMapHeapConfigTest
47 */
48 public class JMapHeapConfigTest {
49
50 static final String expectedJMapValues[] = {
51 "MinHeapFreeRatio",
52 "MaxHeapFreeRatio",
53 "MaxHeapSize",
54 "NewSize",
55 "MaxNewSize",
56 "OldSize",
57 "NewRatio",
58 "SurvivorRatio",
59 "MetaspaceSize",
60 "CompressedClassSpaceSize",
61 "G1HeapRegionSize"};
62
63 // ignoring MaxMetaspaceSize
64
65 static final String desiredMaxHeapSize = "-Xmx128m";
66
67 private static Map<String, String> parseJMapOutput(List<String> jmapOutput) {
68 Map<String, String> heapConfigMap = new HashMap<String, String>();
69 boolean shouldParse = false;
70
71 for (String line : jmapOutput) {
72 line = line.trim();
73
74 if (line.startsWith("Heap Configuration:")) {
75 shouldParse = true;
76 continue;
77 }
78
79 if (line.startsWith("Heap Usage:")) {
80 shouldParse = false;
81 continue;
82 }
83
84 if (shouldParse && !line.equals("")) {
85 String[] lv = line.split("\\s+");
86 try {
87 heapConfigMap.put(lv[0], lv[2]);
88 } catch (ArrayIndexOutOfBoundsException ex) {
89 // Ignore mailformed lines
90 }
91 }
92 }
93 return heapConfigMap;
94 }
95
96 // Compare stored values
97 private static void compareValues(Map<String, String> parsedJMapOutput, Map<String, String> parsedVmOutput) {
98 for (String key : expectedJMapValues) {
99 try {
100 String jmapVal = parsedJMapOutput.get(key);
101 if (jmapVal == null) {
102 throw new RuntimeException("Key '" + key + "' doesn't exists in jmap output");
103 }
104
105 String vmVal = parsedVmOutput.get(key);
106 if (vmVal == null) {
107 throw new RuntimeException("Key '" + key + "' doesn't exists in vm output");
108 }
109
110 if (new BigDecimal(jmapVal).compareTo(new BigDecimal(vmVal)) != 0) {
111 throw new RuntimeException(String.format("Key %s doesn't match %s vs %s", key, vmVal, jmapVal));
112 }
113 } catch (NumberFormatException ex) {
114 throw new RuntimeException("Unexpected key '" + key + "' value", ex);
115 }
116 }
117 }
118
119 public static void main(String[] args) throws Exception {
120 System.out.println("Starting JMapHeapConfigTest");
121
122 if (!Platform.shouldSAAttach()) {
123 // Silently skip the test if we don't have enough permissions to attach
124 System.err.println("Error! Insufficient permissions to attach.");
125 return;
126 }
127
128 if (!LingeredApp.isLastModifiedWorking()) {
129 // Exact behaviour of the test depends to operating system and the test nature,
130 // so just print the warning and continue
131 System.err.println("Warning! Last modified time doesn't work.");
132 }
133
134 boolean mx_found = false;
135 List<String> jvmOptions = Utils.getVmOptions();
136 for (String option : jvmOptions) {
137 if (option.startsWith("-Xmx")) {
138 System.out.println("INFO: maximum heap size set by JTREG as " + option);
139 mx_found = true;
140 break;
141 }
142 }
143
144 // Forward vm options to LingeredApp
145 ArrayList<String> cmd = new ArrayList();
146 cmd.addAll(Utils.getVmOptions());
147 if (!mx_found) {
148 cmd.add(desiredMaxHeapSize);
149 System.out.println("INFO: maximum heap size set explicitly as " + desiredMaxHeapSize);
150 }
151 cmd.add("-XX:+PrintFlagsFinal");
152
153 TmtoolTestScenario tmt = TmtoolTestScenario.create("jmap", "--heap");
154 int exitcode = tmt.launch(cmd);
155 if (exitcode != 0) {
156 throw new RuntimeException("Test FAILED jmap exits with non zero exit code " + exitcode);
157 }
158
159 Map<String,String> parsedJmapOutput = parseJMapOutput(tmt.getToolOutput());
160 Map<String,String> parsedVMOutput = tmt.parseFlagsFinal();
161
162 compareValues(parsedJmapOutput, parsedVMOutput);
163
164 // If test fails it throws RuntimeException
165 System.out.println("Test PASSED");
166 }
167 }