1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/prims/jvmtiEnvFill.java Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,260 @@
1.4 +/*
1.5 + * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +import java.io.*;
1.29 +import java.util.*;
1.30 +
1.31 +class jvmtiEnvFill {
1.32 +
1.33 + public static void main(String[] args) throws IOException {
1.34 + if (args.length != 3) {
1.35 + System.err.println("usage: <filledFile> <stubFile> <resultFile>");
1.36 + System.exit(1);
1.37 + }
1.38 + String filledFN = args[0];
1.39 + String stubFN = args[1];
1.40 + String resultFN = args[2];
1.41 +
1.42 + SourceFile filledSF = new SourceFile(filledFN);
1.43 + SourceFile stubSF = new SourceFile(stubFN);
1.44 +
1.45 +
1.46 + stubSF.fill(filledSF);
1.47 +
1.48 + PrintWriter out = new PrintWriter(new FileWriter(resultFN));
1.49 + stubSF.output(out);
1.50 + out.close();
1.51 + }
1.52 +}
1.53 +
1.54 +class SourceFile {
1.55 +
1.56 + static final String endFilePrefix = "// end file prefix";
1.57 + static final String functionPrefix = "JvmtiEnv::";
1.58 +
1.59 + final String fn;
1.60 + LineNumberReader in;
1.61 + String line;
1.62 + List<String> top = new ArrayList<String>();
1.63 + List<String> before = new ArrayList<String>();
1.64 + boolean inFilePrefix = true;
1.65 + List<Function> functions = new ArrayList<Function>();
1.66 + Map<String, Function> functionMap = new HashMap<String, Function>();
1.67 +
1.68 + class Function {
1.69 + String name;
1.70 + String args;
1.71 + String compareArgs;
1.72 + List comment;
1.73 + List<String> body = new ArrayList<String>();
1.74 +
1.75 + Function() throws IOException {
1.76 + line = in.readLine();
1.77 + String trimmed = line.trim();
1.78 + if (!trimmed.startsWith(functionPrefix)) {
1.79 + error("expected '" + functionPrefix + "'");
1.80 + }
1.81 + int index = trimmed.indexOf('(', functionPrefix.length());
1.82 + if (index == -1) {
1.83 + error("missing open paren");
1.84 + }
1.85 + name = trimmed.substring(functionPrefix.length(), index);
1.86 + int index2 = trimmed.indexOf(')', index);
1.87 + if (index2 == -1) {
1.88 + error("missing close paren - must be on same line");
1.89 + }
1.90 + args = trimmed.substring(index+1, index2);
1.91 + compareArgs = args.replaceAll("\\s", "");
1.92 + String tail = trimmed.substring(index2+1).trim();
1.93 + if (!tail.equals("{")) {
1.94 + error("function declaration first line must end with open bracket '{', instead got '" +
1.95 + tail + "'");
1.96 + }
1.97 + while(true) {
1.98 + line = in.readLine();
1.99 + if (line == null) {
1.100 + line = ""; // so error does not look wierd
1.101 + error("unexpected end of file");
1.102 + }
1.103 + if (line.startsWith("}")) {
1.104 + break;
1.105 + }
1.106 + body.add(line);
1.107 + }
1.108 + String expected = "} /* end " + name + " */";
1.109 + trimmed = line.replaceAll("\\s","");
1.110 + if (!trimmed.equals(expected.replaceAll("\\s",""))) {
1.111 + error("function end is malformed - should be: " + expected);
1.112 + }
1.113 + // copy over the comment prefix
1.114 + comment = before;
1.115 + before = new ArrayList<String>();
1.116 + }
1.117 +
1.118 + void remove() {
1.119 + functionMap.remove(name);
1.120 + }
1.121 +
1.122 + String fileName() {
1.123 + return fn;
1.124 + }
1.125 +
1.126 + void fill(Function filledFunc) {
1.127 + if (filledFunc == null) {
1.128 + System.err.println("Warning: function " + name + " missing from filled file");
1.129 + body.add(0, " /*** warning: function added and not filled in ***/");
1.130 + } else {
1.131 + int fbsize = filledFunc.body.size();
1.132 + int bsize = body.size();
1.133 + if (fbsize > bsize || !body.subList(bsize-fbsize,bsize).equals(filledFunc.body)) {
1.134 + // it has actually been filled in
1.135 + body = filledFunc.body;
1.136 + if (!compareArgs.equals(filledFunc.compareArgs)) {
1.137 + System.err.println("Warning: function " + name +
1.138 + ": filled and stub arguments differ");
1.139 + System.err.println(" old (filled): " + filledFunc.args);
1.140 + System.err.println(" new (stub): " + args);
1.141 + body.add(0, " /*** warning: arguments changed, were: " +
1.142 + filledFunc.args + " ***/");
1.143 + }
1.144 + }
1.145 + filledFunc.remove(); // mark used
1.146 + }
1.147 + }
1.148 +
1.149 + void output(PrintWriter out) {
1.150 + Iterator it = comment.iterator();
1.151 + while (it.hasNext()) {
1.152 + out.println(it.next());
1.153 + }
1.154 + out.println("jvmtiError");
1.155 + out.print(functionPrefix);
1.156 + out.print(name);
1.157 + out.print('(');
1.158 + out.print(args);
1.159 + out.println(") {");
1.160 + it = body.iterator();
1.161 + while (it.hasNext()) {
1.162 + out.println(it.next());
1.163 + }
1.164 + out.print("} /* end ");
1.165 + out.print(name);
1.166 + out.println(" */");
1.167 + }
1.168 + }
1.169 +
1.170 + SourceFile(String fn) throws IOException {
1.171 + this.fn = fn;
1.172 + Reader reader = new FileReader(fn);
1.173 + in = new LineNumberReader(reader);
1.174 +
1.175 + while (readGaps()) {
1.176 + Function func = new Function();
1.177 + functionMap.put(func.name, func);
1.178 + functions.add(func);
1.179 + }
1.180 +
1.181 + in.close();
1.182 + }
1.183 +
1.184 + void error(String msg) {
1.185 + System.err.println("Fatal error parsing file: " + fn);
1.186 + System.err.println("Line number: " + in.getLineNumber());
1.187 + System.err.println("Error message: " + msg);
1.188 + System.err.println("Source line: " + line);
1.189 + System.exit(1);
1.190 + }
1.191 +
1.192 + boolean readGaps() throws IOException {
1.193 + while(true) {
1.194 + line = in.readLine();
1.195 + if (line == null) {
1.196 + return false; // end of file
1.197 + }
1.198 + if (!inFilePrefix && line.startsWith("}")) {
1.199 + error("unexpected close bracket in first column, outside of function.\n");
1.200 + }
1.201 + String trimmed = line.trim();
1.202 + if (line.startsWith("jvmtiError")) {
1.203 + if (trimmed.equals("jvmtiError")) {
1.204 + if (inFilePrefix) {
1.205 + error("unexpected 'jvmtiError' line in file prefix.\n" +
1.206 + "is '" + endFilePrefix + "'... line missing?");
1.207 + }
1.208 + return true; // beginning of a function
1.209 + } else {
1.210 + error("extra characters at end of 'jvmtiError'");
1.211 + }
1.212 + }
1.213 + if (inFilePrefix) {
1.214 + top.add(line);
1.215 + } else {
1.216 + trimmed = line.trim();
1.217 + if (!trimmed.equals("") && !trimmed.startsWith("//") && !trimmed.startsWith("#")) {
1.218 + error("only comments and blank lines allowed between functions");
1.219 + }
1.220 + before.add(line);
1.221 + }
1.222 + if (line.replaceAll("\\s","").toLowerCase().startsWith(endFilePrefix.replaceAll("\\s",""))) {
1.223 + if (!inFilePrefix) {
1.224 + error("excess '" + endFilePrefix + "'");
1.225 + }
1.226 + inFilePrefix = false;
1.227 + }
1.228 + }
1.229 + }
1.230 +
1.231 + void fill(SourceFile filledSF) {
1.232 + // copy beginning of file straight from filled file
1.233 + top = filledSF.top;
1.234 +
1.235 + // file in functions
1.236 + Iterator it = functions.iterator();
1.237 + while (it.hasNext()) {
1.238 + Function stubFunc = (Function)(it.next());
1.239 + Function filledFunc = (Function)filledSF.functionMap.get(stubFunc.name);
1.240 + stubFunc.fill(filledFunc);
1.241 + }
1.242 + if (filledSF.functionMap.size() > 0) {
1.243 + System.err.println("Warning: the following functions were present in the " +
1.244 + "filled file but missing in the stub file and thus not copied:");
1.245 + it = filledSF.functionMap.values().iterator();
1.246 + while (it.hasNext()) {
1.247 + System.err.println(" " + ((Function)(it.next())).name);
1.248 + }
1.249 + }
1.250 + }
1.251 +
1.252 + void output(PrintWriter out) {
1.253 + Iterator it = top.iterator();
1.254 + while (it.hasNext()) {
1.255 + out.println(it.next());
1.256 + }
1.257 + it = functions.iterator();
1.258 + while (it.hasNext()) {
1.259 + Function stubFunc = (Function)(it.next());
1.260 + stubFunc.output(out);
1.261 + }
1.262 + }
1.263 +}
