db21e3add0
FileInputStream and FileOutputStream rely on finalize() method to ensure resources are closed. This implies they are added to the finalizer queue which causes additional work for the JVM GC process. This is an open bug on the OpenJDK [1] and the recommended workaround is to use the Files.newInputStream and Files.newOutputStream static methods instead. [1] https://bugs.openjdk.java.net/browse/JDK-8080225 Change-Id: I3cef6fcf198dde2be7cd15bded8d2fa247177654
87 lines
2.6 KiB
Java
87 lines
2.6 KiB
Java
// Copyright (C) 2013 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import com.googlecode.prolog_cafe.compiler.Compiler;
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import com.googlecode.prolog_cafe.exceptions.CompileException;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.file.Files;
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import java.util.jar.JarEntry;
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import java.util.jar.JarOutputStream;
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public class BuckPrologCompiler {
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private static File tmpdir;
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public static void main(String[] argv) throws IOException, CompileException {
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int i = 0;
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tmpdir = new File(argv[i++]);
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File out = new File(argv[i++]);
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File java = tmpdir("java");
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for (; i < argv.length; i++) {
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new Compiler().prologToJavaSource(argv[i], java.getPath());
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}
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jar(out, java);
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}
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private static File tmpdir(String name) throws IOException {
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File d = File.createTempFile(name + "_", "", tmpdir);
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if (!d.delete() || !d.mkdir()) {
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throw new IOException("Cannot mkdir " + d);
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}
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return d;
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}
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private static void jar(File jar, File classes) throws IOException {
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File tmp = File.createTempFile("prolog", ".jar", tmpdir);
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try {
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try (JarOutputStream out = new JarOutputStream(Files.newOutputStream(tmp.toPath()))) {
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add(out, classes, "");
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}
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if (!tmp.renameTo(jar)) {
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throw new IOException("Cannot create " + jar);
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}
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} finally {
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tmp.delete();
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}
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}
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private static void add(JarOutputStream out, File classes, String prefix) throws IOException {
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String[] list = classes.list();
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if (list == null) {
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return;
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}
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for (String name : list) {
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File f = new File(classes, name);
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if (f.isDirectory()) {
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add(out, f, prefix + name + "/");
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continue;
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}
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JarEntry e = new JarEntry(prefix + name);
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try (InputStream in = Files.newInputStream(f.toPath())) {
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e.setTime(f.lastModified());
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out.putNextEntry(e);
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byte[] buf = new byte[16 << 10];
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int n;
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while (0 < (n = in.read(buf))) {
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out.write(buf, 0, n);
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}
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} finally {
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out.closeEntry();
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}
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}
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}
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}
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