2026-04-21 10:05:16 +00:00

247 lines
9.9 KiB
Java

/*
* Copyright (c) 2014, 2026, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test CodeCacheTest
* @bug 8054889 8307537
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.compiler
* java.management
* jdk.internal.jvmstat/sun.jvmstat.monitor
* @run testng/othervm -XX:+SegmentedCodeCache CodeCacheTest
* @run testng/othervm -XX:-SegmentedCodeCache CodeCacheTest
* @run testng/othervm -Xint -XX:+SegmentedCodeCache CodeCacheTest
* @summary Test of diagnostic command Compiler.codecache
*/
import org.testng.annotations.Test;
import org.testng.Assert;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.dcmd.CommandExecutor;
import jdk.test.lib.dcmd.JMXExecutor;
import java.util.Iterator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class CodeCacheTest {
/**
* This test calls Jcmd (diagnostic command tool) Compiler.codecache and then parses the output,
* making sure that all numbers look ok
*
*
* Expected output without code cache segmentation:
*
* CodeCache: size=245760Kb used=1366Kb max_used=1935Kb free=244393Kb
* bounds [0x00007ff4d89f2000, 0x00007ff4d8c62000, 0x00007ff4e79f2000]
* blobs=474, nmethods=87, adapters=293, full_count=0
* Compilation: enabled, stopped_count=0, restarted_count=0
*
* Expected output with code cache segmentation (number of segments may change):
*
* CodeHeap 'non-profiled nmethods': size=118592Kb used=370Kb max_used=370Kb free=118221Kb
* bounds [0x00007f2093d3a000, 0x00007f2093faa000, 0x00007f209b10a000]
* blobs=397, nmethods=397, adapters=0, full_count=0
* CodeHeap 'profiled nmethods': size=118592Kb used=2134Kb max_used=2134Kb free=116457Kb
* bounds [0x00007f208c109000, 0x00007f208c379000, 0x00007f20934d9000]
* blobs=1091, nmethods=1091, adapters=0, full_count=0
* CodeHeap 'non-nmethods': size=8580Kb used=4461Kb max_used=4506Kb free=4118Kb
* bounds [0x00007f20934d9000, 0x00007f2093949000, 0x00007f2093d3a000]
* blobs=478, nmethods=0, adapters=387, full_count=0
* CodeCache: size=245764Kb, used=6965Kb, max_used=7010Kb, free=238796Kb
* total blobs=1966, nmethods=1488, adapters=387, full_count=0
* Compilation: enabled, stopped_count=0, restarted_count=0
*/
static Pattern line1 = Pattern.compile("(CodeCache|CodeHeap.*): size=(\\p{Digit}*)Kb used=(\\p{Digit}*)Kb max_used=(\\p{Digit}*)Kb free=(\\p{Digit}*)Kb");
static Pattern line2 = Pattern.compile(" bounds \\[0x(\\p{XDigit}*), 0x(\\p{XDigit}*), 0x(\\p{XDigit}*)\\]");
static Pattern line3 = Pattern.compile(" blobs=(\\p{Digit}*), nmethods=(\\p{Digit}*), adapters=(\\p{Digit}*), full_count=(\\p{Digit}*)");
static Pattern line4 = Pattern.compile(" total blobs=(\\p{Digit}*), nmethods=(\\p{Digit}*), adapters=(\\p{Digit}*), full_count=(\\p{Digit}*)");
static Pattern line5 = Pattern.compile("Compilation: (.*?), stopped_count=(\\p{Digit}*), restarted_count=(\\p{Digit}*)");
private static boolean getFlagBool(String flag, String where) {
Matcher m = Pattern.compile(flag + "\\s+:?= (true|false)").matcher(where);
if (!m.find()) {
Assert.fail("Could not find value for flag " + flag + " in output string");
}
return m.group(1).equals("true");
}
private static int getFlagInt(String flag, String where) {
Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where);
if (!m.find()) {
Assert.fail("Could not find value for flag " + flag + " in output string");
}
String match = m.group();
return Integer.parseInt(match.substring(match.lastIndexOf(" ") + 1, match.length()));
}
public void run(CommandExecutor executor) {
// Get number of code cache segments
int segmentsCount = 0;
String flags = executor.execute("VM.flags -all").getOutput();
if (!getFlagBool("SegmentedCodeCache", flags) || !getFlagBool("UseCompiler", flags)) {
// No segmentation
segmentsCount = 1;
} else if (getFlagBool("TieredCompilation", flags) && getFlagInt("TieredStopAtLevel", flags) > 1) {
// Tiered compilation: use all segments
segmentsCount = 3;
} else {
// No TieredCompilation: only non-nmethod and non-profiled segment
segmentsCount = 2;
}
// Get output from dcmd (diagnostic command)
OutputAnalyzer output = executor.execute("Compiler.codecache");
Iterator<String> lines = output.asLines().iterator();
// Validate code cache segments
String line;
Matcher m;
int matchedCount = 0;
int totalBlobs = 0;
int totalNmethods = 0;
int totalAdapters = 0;
while (true) {
// Validate first line
line = lines.next();
m = line1.matcher(line);
if (m.matches()) {
for (int i = 2; i <= 5; i++) {
int val = Integer.parseInt(m.group(i));
if (val < 0) {
Assert.fail("Failed parsing dcmd codecache output");
}
}
} else {
break;
}
// Validate second line
line = lines.next();
m = line2.matcher(line);
if (m.matches()) {
String start = m.group(1);
String mark = m.group(2);
String top = m.group(3);
// Lexical compare of hex numbers to check that they look sane.
if (start.compareTo(mark) > 1) {
Assert.fail("Failed parsing dcmd codecache output");
}
if (mark.compareTo(top) > 1) {
Assert.fail("Failed parsing dcmd codecache output");
}
} else {
Assert.fail("Regexp 2 failed to match line: " + line);
}
// Validate third line
line = lines.next();
m = line3.matcher(line);
if (m.matches()) {
int blobs = Integer.parseInt(m.group(1));
if (blobs < 0) {
Assert.fail("Failed parsing dcmd codecache output");
}
totalBlobs += blobs;
int nmethods = Integer.parseInt(m.group(2));
if (nmethods < 0) {
Assert.fail("Failed parsing dcmd codecache output");
}
totalNmethods += nmethods;
int adapters = Integer.parseInt(m.group(3));
if (adapters < 0) {
Assert.fail("Failed parsing dcmd codecache output");
}
totalAdapters += adapters;
if (blobs < (nmethods + adapters)) {
Assert.fail("Failed parsing dcmd codecache output");
}
} else {
Assert.fail("Regexp 3 failed to match line: " + line);
}
++matchedCount;
}
// Because of CodeCacheExtensions, we could match more than expected
if (matchedCount < segmentsCount) {
Assert.fail("Fewer segments matched (" + matchedCount + ") than expected (" + segmentsCount + ")");
}
if (segmentsCount != 1) {
// Skip this line CodeCache: size=245760Kb, used=5698Kb, max_used=5735Kb, free=240059Kb
line = lines.next();
// Validate fourth line
m = line4.matcher(line);
if (m.matches()) {
int blobs = Integer.parseInt(m.group(1));
if (blobs != totalBlobs) {
Assert.fail("Failed parsing dcmd codecache output");
}
int nmethods = Integer.parseInt(m.group(2));
if (nmethods != totalNmethods) {
Assert.fail("Failed parsing dcmd codecache output");
}
int adapters = Integer.parseInt(m.group(3));
if (adapters != totalAdapters) {
Assert.fail("Failed parsing dcmd codecache output");
}
if (blobs < (nmethods + adapters)) {
Assert.fail("Failed parsing dcmd codecache output");
}
} else {
Assert.fail("Regexp 4 failed to match line: " + line);
}
line = lines.next();
}
// Validate last line
m = line5.matcher(line);
if (m.matches()) {
if (!m.group(1).contains("enabled") && !m.group(1).contains("disabled")) {
Assert.fail("Failed parsing dcmd codecache output");
}
int stopped = Integer.parseInt(m.group(2));
if (stopped < 0) {
Assert.fail("Failed parsing dcmd codecache output");
}
int restarted = Integer.parseInt(m.group(3));
if (restarted < 0) {
Assert.fail("Failed parsing dcmd codecache output");
}
} else {
Assert.fail("Regexp 5 failed to match line: " + line);
}
}
@Test
public void jmx() {
run(new JMXExecutor());
}
}