67 lines
2.4 KiB
Java
67 lines
2.4 KiB
Java
/*
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* Copyright (c) 2016, 2023, 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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package gc.stress.gcbasher;
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import java.io.IOException;
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import java.net.URI;
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import java.nio.file.FileSystems;
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import java.nio.file.FileSystem;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.HashMap;
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import java.util.stream.Stream;
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public class TestGCBasher {
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private static void parseClassFiles() throws IOException {
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HashMap<String, ClassInfo> deps = new HashMap<>();
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FileSystem fs = FileSystems.getFileSystem(URI.create("jrt:/"));
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try (Stream<Path> s = Files.walk(fs.getPath("/"))) {
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for (Path p : (Iterable<Path>)s::iterator) {
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if (p.toString().endsWith(".class") &&
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!p.getFileName().toString().equals("module-info.class")) {
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byte[] data = Files.readAllBytes(p);
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Decompiler d = new Decompiler(data);
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ClassInfo ci = d.getClassInfo();
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deps.put(ci.getName(), ci);
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}
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}
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}
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}
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public static void main(String[] args) throws IOException {
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if (args.length != 1) {
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System.err.println("Usage: TestGCBasher <duration-ms>");
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return;
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}
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long durationNanos = Long.valueOf(args[0]) * 1_000_000L;
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long startNanos = System.nanoTime();
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while (System.nanoTime() - startNanos < durationNanos) {
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parseClassFiles();
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}
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}
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}
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