1 /* 2 * Copyright (c) 2013, 2018, 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 */ 23 //package nsk.jvmti.RedefineClasses.StressRedefine; 24 package nsk.jvmti.RedefineClasses; 25 26 import java.util.Random; 27 28 29 public class GenerateSourceHelper { 30 31 static final String STATIC_METHOD_NAME = "staticMethod"; 32 static final String NONSTATIC_METHOD_NAME = "regularMethod"; 33 static final String CLASS_NAME = "MyClass"; 34 35 private static Random random; 36 setRandom(Random random)37 public static void setRandom(Random random) { 38 GenerateSourceHelper.random = random; 39 } 40 41 /** 42 * We can vary only constant pool and method bodies from call to call 43 * 44 */ generateSource()45 static CharSequence generateSource() { 46 return "public class " + CLASS_NAME + " { " + 47 "public static String s1 = \"s1s" + random.nextInt() + "dfsdf\"; " + 48 "public int i = 1345345345; \n" + 49 "public static double dd = 1e-4; \n" + 50 "public String s2 = \"s2" + random.nextInt() + "sdfsdf\"; \n" + 51 "public static String static_s2 = \"s2" + random.nextInt() + "sdfsdf\"; \n" + 52 "protected String sprotected1 = \"asdfsdf" + random.nextInt() + "sdf\"; \n" + 53 "protected double d = -.12345; \n" + 54 "public String methodJustPadding() {return s1 + s2 + d; } \n" + 55 "public static String " + STATIC_METHOD_NAME + "(double d, int i, Object o) {\n" + 56 "String ret_0 = \"little computation \" + (4 * dd + d + i + o.hashCode() + s1.length()); \n" + 57 "String ret_1 = \"in_static_method call_random=" + random.nextInt() + "\"; \n" + 58 "String ret = s1 + static_s2 + d + i + o; \n" + 59 //"System.out.println(\"ret stat is : \" + ret);" + 60 "return ret; " + 61 "} \n" + 62 "public String methodInTheMiddle() {return s1 + s2; } \n" + 63 "public String " + NONSTATIC_METHOD_NAME + "(double d, int i, Object o) {\n" + 64 "String ret_0 = \"little computation \" + (2 * dd + 5 * d + i + o.hashCode() + s2.length()); \n" + 65 "String ret_1 = \"in_nonstatic_method call_random=" + random.nextInt() + "\"; " + 66 "String ret = ret_0 + ret_1 + s1 + s2 + i + o; \n" + 67 //"System.out.println(\"ret nonstat is : \" + ret);" + 68 "return ret;" + 69 "} \n" + 70 "public String methodFinalInClass() {return s1 + s2 + i; } \n" + 71 "}"; 72 } 73 74 75 } 76