CodeCacheTest.java revision 8359:ed6389f70257 
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 jdk.test.lib.*
33 * @build jdk.test.lib.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
40import org.testng.annotations.Test;
41import org.testng.Assert;
42
43import jdk.test.lib.OutputAnalyzer;
44import jdk.test.lib.dcmd.CommandExecutor;
45import jdk.test.lib.dcmd.JMXExecutor;
46
47import java.util.Iterator;
48import java.util.regex.Matcher;
49import java.util.regex.Pattern;
50
51public 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}
192