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