mirror of
https://github.com/openjdk/jdk.git
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107 lines
4.1 KiB
Java
107 lines
4.1 KiB
Java
/*
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* Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8375125
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* @summary Trigger StringTable::clean_dead_entries or SymbolTable::clean_dead_entries
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* with -XX:TrimNativeHeapInterval enabled,should not violate lock ordering.
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* @requires vm.debug
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* @requires vm.gc != "Epsilon"
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* @library /test/lib
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* @modules java.compiler
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* @run main/othervm -Xms128m -Xmx128m
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* -XX:TrimNativeHeapInterval=300000
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* TestTrimNativeHeapIntervalTablesCleanup string
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* @run main/othervm -Xms128m -Xmx128m
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* -XX:TrimNativeHeapInterval=300000
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* TestTrimNativeHeapIntervalTablesCleanup symbol
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*/
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import java.util.LinkedList;
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import jdk.test.lib.compiler.InMemoryJavaCompiler;
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public class TestTrimNativeHeapIntervalTablesCleanup {
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public static void main(String[] args) throws Exception{
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if (args.length != 1) {
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throw new IllegalArgumentException("Expected 1 argument: string|symbol");
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}
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switch (args[0]) {
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case "string":
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testStringTableCleanup();
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break;
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case "symbol":
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testSymbolTableCleanup();
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break;
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default:
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throw new IllegalArgumentException("Unknown mode: " + args[0]);
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}
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System.out.println("passed: " + args[0]);
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}
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static void testStringTableCleanup() throws Exception{
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final int rounds = 30;
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final int maxSize = 200_000;
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final int pruneEvery = 50_000;
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final int pruneCount = 25_000;
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long stringNum = 0;
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for (int round = 0; round < rounds; round++) {
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LinkedList<String> list = new LinkedList<>();
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for (int i = 0; i < maxSize; i++, stringNum++) {
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if (i != 0 && (i % pruneEvery) == 0) {
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int toRemove = Math.min(pruneCount, list.size());
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list.subList(0, toRemove).clear();
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}
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list.push(Long.toString(stringNum).intern());
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}
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System.gc();
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Thread.sleep(1000);
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}
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}
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static void testSymbolTableCleanup() throws Exception {
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final int rounds = 10;
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final int classesPerRound = 100;
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for (int r = 0; r < rounds; r++) {
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for (int i = 0; i < classesPerRound; i++) {
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String cn = "C" + r + "_" + i;
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byte[] bytes = InMemoryJavaCompiler.compile(
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cn,
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"public class " + cn + " { int m" + i + "() { return " + i + "; } }"
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);
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new ClassLoader(null) {
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@Override
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protected Class<?> findClass(String name) throws ClassNotFoundException {
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if (!name.equals(cn)) throw new ClassNotFoundException(name);
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return defineClass(name, bytes, 0, bytes.length);
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}
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}.loadClass(cn).getDeclaredConstructor().newInstance();
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}
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System.gc();
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Thread.sleep(1000);
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}
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}
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} |