1 /*
2 * Copyright (c) 2016, 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 *
31 import java.util.HashMap;
32 import java.util.stream.Stream;
33
34 public class TestGCBasher {
35 private static void parseClassFiles() throws IOException {
36 HashMap<String, ClassInfo> deps = new HashMap<>();
37
38 FileSystem fs = FileSystems.getFileSystem(URI.create("jrt:/"));
39 Stream<Path> s = Files.walk(fs.getPath("/"));
40 for (Path p : (Iterable<Path>)s::iterator) {
41 if (p.toString().endsWith(".class") &&
42 !p.getFileName().toString().equals("module-info.class")) {
43 byte[] data = Files.readAllBytes(p);
44 Decompiler d = new Decompiler(data);
45 ClassInfo ci = d.getClassInfo();
46 deps.put(ci.getName(), ci);
47 }
48 }
49 }
50
51 public static void run(String[] args) throws IOException {
52 if (args.length != 1) {
53 System.err.println("Usage: TestGCBasher <duration-ms>");
54 return;
55 }
56
57 long durationMillis = Long.valueOf(args[0]);
58 long start = System.currentTimeMillis();
59 while (System.currentTimeMillis() - start < durationMillis) {
60 parseClassFiles();
61 }
62 }
63 }
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1 /*
2 * Copyright (c) 2016, 2017, 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 *
31 import java.util.HashMap;
32 import java.util.stream.Stream;
33
34 public class TestGCBasher {
35 private static void parseClassFiles() throws IOException {
36 HashMap<String, ClassInfo> deps = new HashMap<>();
37
38 FileSystem fs = FileSystems.getFileSystem(URI.create("jrt:/"));
39 Stream<Path> s = Files.walk(fs.getPath("/"));
40 for (Path p : (Iterable<Path>)s::iterator) {
41 if (p.toString().endsWith(".class") &&
42 !p.getFileName().toString().equals("module-info.class")) {
43 byte[] data = Files.readAllBytes(p);
44 Decompiler d = new Decompiler(data);
45 ClassInfo ci = d.getClassInfo();
46 deps.put(ci.getName(), ci);
47 }
48 }
49 }
50
51 public static void main(String[] args) throws IOException {
52 if (args.length != 1) {
53 System.err.println("Usage: TestGCBasher <duration-ms>");
54 return;
55 }
56
57 long durationMillis = Long.valueOf(args[0]);
58 long start = System.currentTimeMillis();
59 while (System.currentTimeMillis() - start < durationMillis) {
60 parseClassFiles();
61 }
62 }
63 }
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