1 /*
2 * Copyright (c) 2015, 2018, 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 * @requires vm.hasSAandCanAttach
41 * @library /test/lib
42 * @library /lib/testlibrary
43 * @modules java.management
44 * jdk.hotspot.agent/sun.jvm.hotspot
45 *
46 * @build JMapHeapConfigTest TmtoolTestScenario
47 * @run main JMapHeapConfigTest
48 */
49 public class JMapHeapConfigTest {
50
51 static final String expectedJMapValues[] = {
52 "MinHeapFreeRatio",
53 "MaxHeapFreeRatio",
54 "MaxHeapSize",
55 "NewSize",
56 "MaxNewSize",
57 "OldSize",
58 "NewRatio",
59 "SurvivorRatio",
60 "MetaspaceSize",
61 "CompressedClassSpaceSize",
62 "G1HeapRegionSize"};
63
64 // ignoring MaxMetaspaceSize
65
66 static final String desiredMaxHeapSize = "-Xmx128m";
67
68 private static Map<String, String> parseJMapOutput(List<String> jmapOutput) {
69 Map<String, String> heapConfigMap = new HashMap<String, String>();
70 boolean shouldParse = false;
71
72 for (String line : jmapOutput) {
73 line = line.trim();
74
75 if (line.startsWith("Heap Configuration:")) {
76 shouldParse = true;
77 continue;
78 }
79
80 if (line.startsWith("Heap Usage:")) {
81 shouldParse = false;
82 continue;
83 }
84
85 if (shouldParse && !line.equals("")) {
86 String[] lv = line.split("\\s+");
87 try {
88 heapConfigMap.put(lv[0], lv[2]);
89 } catch (ArrayIndexOutOfBoundsException ex) {
90 // Ignore mailformed lines
91 }
92 }
93 }
94 return heapConfigMap;
95 }
96
97 // Compare stored values
98 private static void compareValues(Map<String, String> parsedJMapOutput, Map<String, String> parsedVmOutput) {
99 for (String key : expectedJMapValues) {
100 try {
101 String jmapVal = parsedJMapOutput.get(key);
102 if (jmapVal == null) {
103 throw new RuntimeException("Key '" + key + "' doesn't exists in jmap output");
104 }
105
106 String vmVal = parsedVmOutput.get(key);
107 if (vmVal == null) {
108 throw new RuntimeException("Key '" + key + "' doesn't exists in vm output");
109 }
110
111 if (new BigDecimal(jmapVal).compareTo(new BigDecimal(vmVal)) != 0) {
112 throw new RuntimeException(String.format("Key %s doesn't match %s vs %s", key, vmVal, jmapVal));
113 }
114 } catch (NumberFormatException ex) {
115 throw new RuntimeException("Unexpected key '" + key + "' value", ex);
116 }
117 }
118 }
119
120 public static void main(String[] args) throws Exception {
121 System.out.println("Starting JMapHeapConfigTest");
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 }