1 /* 2 * Copyright (C) 2017 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 import java.lang.reflect.Method; 18 import java.util.ArrayList; 19 import java.util.Base64; 20 import java.util.LinkedList; 21 import java.lang.reflect.Executable; 22 23 import art.*; 24 25 public class Main { 26 /** 27 * NB This test cannot be run on the RI. 28 * TODO We should make this run on the RI. 29 */ 30 main(String[] args)31 public static void main(String[] args) throws Exception { 32 doTest(); 33 } 34 35 public static volatile boolean started = false; 36 doNothing()37 public static void doNothing() {} notifyBreakpointReached(Thread thr, Executable e, long l)38 public static void notifyBreakpointReached(Thread thr, Executable e, long l) {} 39 doTest()40 public static void doTest() throws Exception { 41 final Object lock = new Object(); 42 Breakpoint.Manager manager = new Breakpoint.Manager(); 43 Breakpoint.startBreakpointWatch( 44 Main.class, 45 Main.class.getDeclaredMethod("notifyBreakpointReached", Thread.class, Executable.class, Long.TYPE), 46 null); 47 Thread thr = new Thread(() -> { 48 synchronized (lock) { 49 started = true; 50 // Wait basically forever. 51 try { 52 lock.wait(Integer.MAX_VALUE - 1); 53 } catch (Exception e) { 54 throw new Error("WAIT EXCEPTION", e); 55 } 56 } 57 }); 58 // set the breakpoint. 59 manager.setBreakpoint(Main.class.getDeclaredMethod("doNothing"), 0l); 60 thr.start(); 61 while (!started || thr.getState() != Thread.State.TIMED_WAITING); 62 // Redefine while thread is paused. 63 forceRedefine(Object.class, Thread.currentThread()); 64 // Clear breakpoints. 65 manager.clearAllBreakpoints(); 66 // set the breakpoint again. 67 manager.setBreakpoint(Main.class.getDeclaredMethod("doNothing"), 0l); 68 // Wakeup 69 synchronized(lock) { 70 lock.notifyAll(); 71 } 72 thr.join(); 73 } 74 forceRedefine(Class c, Thread thr)75 private static native void forceRedefine(Class c, Thread thr); 76 } 77