1 /* 2 * Copyright (C) 2009 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.util.concurrent.*; 18 19 /** 20 * Test for Jit regressions. 21 */ 22 public class Main { main(String args[])23 public static void main(String args[]) throws Exception { 24 b2296099Test(); 25 b2302318Test(); 26 b2487514Test(); 27 } 28 b2296099Test()29 static void b2296099Test() throws Exception { 30 int x = -1190771042; 31 int dist = 360530809; 32 int xl = -1190771042; 33 int distl = 360530809; 34 35 for (int i = 0; i < 100000; i++) { 36 int b = rotateLeft(x, dist); 37 if (b != 1030884493) 38 throw new RuntimeException("Unexpected value: " + b 39 + " after " + i + " iterations"); 40 } 41 for (int i = 0; i < 100000; i++) { 42 long bl = rotateLeft(xl, distl); 43 if (bl != 1030884493) 44 throw new RuntimeException("Unexpected value: " + bl 45 + " after " + i + " iterations"); 46 } 47 System.out.println("b2296099 passes"); 48 } 49 rotateLeft(int i, int distance)50 static int rotateLeft(int i, int distance) { 51 return ((i << distance) | (i >>> (-distance))); 52 } 53 b2302318Test()54 static void b2302318Test() { 55 System.gc(); 56 57 SpinThread slow = new SpinThread(Thread.MIN_PRIORITY); 58 SpinThread fast1 = new SpinThread(Thread.NORM_PRIORITY); 59 SpinThread fast2 = new SpinThread(Thread.MAX_PRIORITY); 60 61 slow.setDaemon(true); 62 fast1.setDaemon(true); 63 fast2.setDaemon(true); 64 65 fast2.start(); 66 slow.start(); 67 fast1.start(); 68 try { 69 Thread.sleep(3000); 70 } catch (InterruptedException ie) {/*ignore */} 71 System.gc(); 72 73 System.out.println("b2302318 passes"); 74 } 75 b2487514Test()76 static void b2487514Test() { 77 PriorityBlockingQueue q = new PriorityBlockingQueue(10); 78 int catchCount = 0; 79 80 q.offer(new Integer(0)); 81 /* 82 * Warm up the code cache to have toArray() compiled. The key here is 83 * to pass a compatible type so that there are no exceptions when 84 * executing the method body (ie the APUT_OBJECT bytecode). 85 */ 86 for (int i = 0; i < 1000; i++) { 87 Integer[] ints = (Integer[]) q.toArray(new Integer[5]); 88 } 89 90 /* Now pass an incompatible type which is guaranteed to throw */ 91 for (int i = 0; i < 1000; i++) { 92 try { 93 Object[] obj = q.toArray(new String[5]); 94 } 95 catch (ArrayStoreException success) { 96 catchCount++; 97 } 98 } 99 100 if (catchCount == 1000) { 101 System.out.println("b2487514 passes"); 102 } 103 else { 104 System.out.println("b2487514 fails: catchCount is " + catchCount + 105 " (expecting 1000)"); 106 } 107 } 108 } 109 110 class SpinThread extends Thread { 111 int mPriority; 112 SpinThread(int prio)113 SpinThread(int prio) { 114 super("Spin prio=" + prio); 115 mPriority = prio; 116 } 117 run()118 public void run() { 119 setPriority(mPriority); 120 while (true) {} 121 } 122 } 123