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