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