1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 public class StackWalk2 { 18 // use v1 for this 19 20 String str = new String(); // use v0 for str in <init> 21 22 int f() { 23 g(1); // use v0 for 1, v1 for this 24 g(2); // use v0 for 2, v1 for this 25 strTest(); // use v1 for this 26 return 0; 27 } 28 29 void g(int num_calls) throws RuntimeException { 30 if (num_calls == 1) { // use v0 for 1, v3 for num_calls 31 System.logI("1st call"); // use v0 for PrintStream, v1 for "1st call" 32 refmap2(24); // use v0 for 24, v2 for this 33 } else if (num_calls == 2) { // use v0 for 2, v3 for num_calls 34 System.logI("2nd call"); // use v0 for PrintStream, v1 for "2nd call" 35 refmap2(25); // use v0 for 24, v2 for this 36 } 37 throw new RuntimeException(); // use v0 for new RuntimeException 38 } 39 40 void strTest() { 41 System.logI(str); // use v1 for PrintStream, v2, v3 for str 42 str = null; // use v1 for null, v3 for str 43 str = new String("ya"); // use v2 for "ya", v1 for new String 44 String s = str; // use v0, v1, v3 45 System.logI(str); // use v1 for PrintStream, v2, v3 for str 46 System.logI(s); // use v1 for PrintStream, v0 for s 47 s = null; // use v0 48 System.logI(s); // use v1 for PrintStream, v0 for s 49 } 50 51 native int refmap2(int x); 52 53 public static void main(String[] args) { 54 System.loadLibrary(args[0]); 55 StackWalk2 st = new StackWalk2(); 56 st.f(); 57 } 58 } 59
