Thu, 04 Nov 2010 12:57:48 +0000
6993963: Project Coin: Use precise exception analysis for effectively final catch parameters
Summary: More precise rethrow analysis should be extended to effectively-final exception parameters. Multicatch parameters should be made implicitly final.
Reviewed-by: jjg, darcy
jjg@416 | 1 | /* |
ohair@554 | 2 | * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. |
jjg@416 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
jjg@416 | 4 | * |
jjg@416 | 5 | * This code is free software; you can redistribute it and/or modify it |
jjg@416 | 6 | * under the terms of the GNU General Public License version 2 only, as |
jjg@416 | 7 | * published by the Free Software Foundation. |
jjg@416 | 8 | * |
jjg@416 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
jjg@416 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
jjg@416 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
jjg@416 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
jjg@416 | 13 | * accompanied this code). |
jjg@416 | 14 | * |
jjg@416 | 15 | * You should have received a copy of the GNU General Public License version |
jjg@416 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
jjg@416 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
jjg@416 | 18 | * |
ohair@554 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
ohair@554 | 20 | * or visit www.oracle.com if you need additional information or have any |
ohair@554 | 21 | * questions. |
jjg@416 | 22 | */ |
jjg@416 | 23 | |
jjg@416 | 24 | import java.io.IOException; |
jjg@416 | 25 | import java.io.InputStream; |
jjg@416 | 26 | import java.util.Enumeration; |
jjg@416 | 27 | import java.util.jar.JarEntry; |
jjg@416 | 28 | import java.util.jar.JarFile; |
jjg@416 | 29 | |
jjg@416 | 30 | import com.sun.tools.classfile.AccessFlags; |
jjg@416 | 31 | import com.sun.tools.classfile.ClassFile; |
jjg@416 | 32 | import com.sun.tools.classfile.ConstantPoolException; |
jjg@416 | 33 | import com.sun.tools.classfile.Method; |
jjg@416 | 34 | import java.util.Comparator; |
jjg@416 | 35 | import java.util.Set; |
jjg@416 | 36 | import java.util.TreeSet; |
jjg@416 | 37 | |
jjg@416 | 38 | public class FindNativeFiles { |
jjg@416 | 39 | public static void main(String[] args) throws IOException, ConstantPoolException { |
jjg@416 | 40 | new FindNativeFiles().run(args); |
jjg@416 | 41 | } |
jjg@416 | 42 | |
jjg@416 | 43 | public void run(String[] args) throws IOException, ConstantPoolException { |
jjg@416 | 44 | JarFile jar = new JarFile(args[0]); |
jjg@416 | 45 | Set<JarEntry> entries = getNativeClasses(jar); |
jjg@416 | 46 | for (JarEntry e: entries) { |
jjg@416 | 47 | String name = e.getName(); |
jjg@416 | 48 | String className = name.substring(0, name.length() - 6).replace("/", "."); |
jjg@416 | 49 | System.out.println(className); |
jjg@416 | 50 | } |
jjg@416 | 51 | } |
jjg@416 | 52 | |
jjg@416 | 53 | Set<JarEntry> getNativeClasses(JarFile jar) throws IOException, ConstantPoolException { |
jjg@416 | 54 | Set<JarEntry> results = new TreeSet<JarEntry>(new Comparator<JarEntry>() { |
jjg@416 | 55 | public int compare(JarEntry o1, JarEntry o2) { |
jjg@416 | 56 | return o1.getName().compareTo(o2.getName()); |
jjg@416 | 57 | } |
jjg@416 | 58 | }); |
jjg@416 | 59 | Enumeration<JarEntry> e = jar.entries(); |
jjg@416 | 60 | while (e.hasMoreElements()) { |
jjg@416 | 61 | JarEntry je = e.nextElement(); |
jjg@416 | 62 | if (isNativeClass(jar, je)) |
jjg@416 | 63 | results.add(je); |
jjg@416 | 64 | } |
jjg@416 | 65 | return results; |
jjg@416 | 66 | } |
jjg@416 | 67 | |
jjg@416 | 68 | boolean isNativeClass(JarFile jar, JarEntry entry) throws IOException, ConstantPoolException { |
jjg@416 | 69 | String name = entry.getName(); |
jjg@416 | 70 | if (name.startsWith("META-INF") || !name.endsWith(".class")) |
jjg@416 | 71 | return false; |
jjg@416 | 72 | //String className = name.substring(0, name.length() - 6).replace("/", "."); |
jjg@416 | 73 | //System.err.println("check " + className); |
jjg@416 | 74 | InputStream in = jar.getInputStream(entry); |
jjg@416 | 75 | ClassFile cf = ClassFile.read(in); |
jjg@416 | 76 | in.close(); |
jjg@416 | 77 | for (int i = 0; i < cf.methods.length; i++) { |
jjg@416 | 78 | Method m = cf.methods[i]; |
jjg@416 | 79 | if (m.access_flags.is(AccessFlags.ACC_NATIVE)) { |
jjg@416 | 80 | // System.err.println(className); |
jjg@416 | 81 | return true; |
jjg@416 | 82 | } |
jjg@416 | 83 | } |
jjg@416 | 84 | return false; |
jjg@416 | 85 | } |
jjg@416 | 86 | } |