1 /*
2 * Copyright (c) 2014, 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 CodeCacheTest
26 * @bug 8054889
27 * @library /testlibrary
28 * @modules java.base/sun.misc
29 * java.compiler
30 * java.management
31 * jdk.jvmstat/sun.jvmstat.monitor
32 * @build com.oracle.java.testlibrary.*
33 * @build com.oracle.java.testlibrary.dcmd.*
34 * @run testng/othervm -XX:+SegmentedCodeCache CodeCacheTest
35 * @run testng/othervm -XX:-SegmentedCodeCache CodeCacheTest
36 * @run testng/othervm -Xint -XX:+SegmentedCodeCache CodeCacheTest
37 * @summary Test of diagnostic command Compiler.codecache
38 */
39
40 import org.testng.annotations.Test;
41 import org.testng.Assert;
42
43 import com.oracle.java.testlibrary.OutputAnalyzer;
44 import com.oracle.java.testlibrary.dcmd.CommandExecutor;
45 import com.oracle.java.testlibrary.dcmd.JMXExecutor;
46
47 import java.util.Iterator;
48 import java.util.regex.Matcher;
49 import java.util.regex.Pattern;
50
51 public class CodeCacheTest {
52
53 /**
54 * This test calls Jcmd (diagnostic command tool) Compiler.codecache and then parses the output,
55 * making sure that all numbers look ok
56 *
57 *
58 * Expected output without code cache segmentation:
59 *
60 * CodeCache: size=245760Kb used=4680Kb max_used=4680Kb free=241079Kb
61 * bounds [0x00007f5bd9000000, 0x00007f5bd94a0000, 0x00007f5be8000000]
62 * total_blobs=575 nmethods=69 adapters=423
63 * compilation: enabled
64 *
65 * Expected output with code cache segmentation (number of segments may change):
66 *
67 * CodeHeap 'non-nmethods': size=5696Kb used=2236Kb max_used=2238Kb free=3459Kb
68 * bounds [0x00007fa0f0ffe000, 0x00007fa0f126e000, 0x00007fa0f158e000]
69 * CodeHeap 'profiled nmethods': size=120036Kb used=8Kb max_used=8Kb free=120027Kb
70 * bounds [0x00007fa0f158e000, 0x00007fa0f17fe000, 0x00007fa0f8ac7000]
71 * CodeHeap 'non-profiled nmethods': size=120036Kb used=2Kb max_used=2Kb free=120034Kb
72 * bounds [0x00007fa0f8ac7000, 0x00007fa0f8d37000, 0x00007fa100000000]
73 * total_blobs=486 nmethods=8 adapters=399
74 * compilation: enabled
75 */
76
77 static Pattern line1 = Pattern.compile("(CodeCache|CodeHeap.*): size=(\\p{Digit}*)Kb used=(\\p{Digit}*)Kb max_used=(\\p{Digit}*)Kb free=(\\p{Digit}*)Kb");
78 static Pattern line2 = Pattern.compile(" bounds \\[0x(\\p{XDigit}*), 0x(\\p{XDigit}*), 0x(\\p{XDigit}*)\\]");
79 static Pattern line3 = Pattern.compile(" total_blobs=(\\p{Digit}*) nmethods=(\\p{Digit}*) adapters=(\\p{Digit}*)");
80 static Pattern line4 = Pattern.compile(" compilation: (.*)");
81
82 private static boolean getFlagBool(String flag, String where) {
83 Matcher m = Pattern.compile(flag + "\\s+:?= (true|false)").matcher(where);
84 if (!m.find()) {
85 Assert.fail("Could not find value for flag " + flag + " in output string");
86 }
87 return m.group(1).equals("true");
88 }
89
90 private static int getFlagInt(String flag, String where) {
91 Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where);
92 if (!m.find()) {
93 Assert.fail("Could not find value for flag " + flag + " in output string");
94 }
95 String match = m.group();
96 return Integer.parseInt(match.substring(match.lastIndexOf(" ") + 1, match.length()));
97 }
98
99 public void run(CommandExecutor executor) {
100 // Get number of code cache segments
101 int segmentsCount = 0;
102 String flags = executor.execute("VM.flags -all").getOutput();
103 if (!getFlagBool("SegmentedCodeCache", flags) || !getFlagBool("UseCompiler", flags)) {
104 // No segmentation
105 segmentsCount = 1;
106 } else if (getFlagBool("TieredCompilation", flags) && getFlagInt("TieredStopAtLevel", flags) > 1) {
107 // Tiered compilation: use all segments
108 segmentsCount = 3;
109 } else {
110 // No TieredCompilation: only non-nmethod and non-profiled segment
111 segmentsCount = 2;
112 }
113
114 // Get output from dcmd (diagnostic command)
115 OutputAnalyzer output = executor.execute("Compiler.codecache");
116 Iterator<String> lines = output.asLines().iterator();
117
118 // Validate code cache segments
119 String line;
120 Matcher m;
121 for (int s = 0; s < segmentsCount; ++s) {
122 // Validate first line
123 line = lines.next();
124 m = line1.matcher(line);
125 if (m.matches()) {
126 for (int i = 2; i <= 5; i++) {
127 int val = Integer.parseInt(m.group(i));
128 if (val < 0) {
129 Assert.fail("Failed parsing dcmd codecache output");
130 }
131 }
132 } else {
133 Assert.fail("Regexp 1 failed to match line: " + line);
134 }
135
136 // Validate second line
137 line = lines.next();
138 m = line2.matcher(line);
139 if (m.matches()) {
140 String start = m.group(1);
141 String mark = m.group(2);
142 String top = m.group(3);
143
144 // Lexical compare of hex numbers to check that they look sane.
145 if (start.compareTo(mark) > 1) {
146 Assert.fail("Failed parsing dcmd codecache output");
147 }
148 if (mark.compareTo(top) > 1) {
149 Assert.fail("Failed parsing dcmd codecache output");
150 }
151 } else {
152 Assert.fail("Regexp 2 failed to match line: " + line);
153 }
154 }
155
156 // Validate third line
157 line = lines.next();
158 m = line3.matcher(line);
159 if (m.matches()) {
160 int blobs = Integer.parseInt(m.group(1));
161 if (blobs <= 0) {
162 Assert.fail("Failed parsing dcmd codecache output");
163 }
164 int nmethods = Integer.parseInt(m.group(2));
165 if (nmethods < 0) {
166 Assert.fail("Failed parsing dcmd codecache output");
167 }
168 int adapters = Integer.parseInt(m.group(3));
169 if (adapters <= 0) {
170 Assert.fail("Failed parsing dcmd codecache output");
171 }
172 if (blobs < (nmethods + adapters)) {
173 Assert.fail("Failed parsing dcmd codecache output");
174 }
175 } else {
176 Assert.fail("Regexp 3 failed to match line: " + line);
177 }
178
179 // Validate fourth line
180 line = lines.next();
181 m = line4.matcher(line);
182 if (!m.matches()) {
183 Assert.fail("Regexp 4 failed to match line: " + line);
184 }
185 }
186
187 @Test
188 public void jmx() {
189 run(new JMXExecutor());
190 }
191 }