Main.java revision f36ff048fa354bcc7597a187002728106a8b9346
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 17import java.util.concurrent.*; 18 19/** 20 * Test for Jit regressions. 21 */ 22public class Main { 23 public static void main(String args[]) throws Exception { 24 b2296099Test(); 25 b2302318Test(); 26 b2487514Test(); 27 b5884080Test(); 28 } 29 30 static void b2296099Test() throws Exception { 31 int x = -1190771042; 32 int dist = 360530809; 33 int xl = -1190771042; 34 int distl = 360530809; 35 36 for (int i = 0; i < 100000; i++) { 37 int b = rotateLeft(x, dist); 38 if (b != 1030884493) 39 throw new RuntimeException("Unexpected value: " + b 40 + " after " + i + " iterations"); 41 } 42 for (int i = 0; i < 100000; i++) { 43 long bl = rotateLeft(xl, distl); 44 if (bl != 1030884493) 45 throw new RuntimeException("Unexpected value: " + bl 46 + " after " + i + " iterations"); 47 } 48 System.out.println("b2296099 passes"); 49 } 50 51 static int rotateLeft(int i, int distance) { 52 return ((i << distance) | (i >>> (-distance))); 53 } 54 55 static void b2302318Test() { 56 System.gc(); 57 58 SpinThread slow = new SpinThread(Thread.MIN_PRIORITY); 59 SpinThread fast1 = new SpinThread(Thread.NORM_PRIORITY); 60 SpinThread fast2 = new SpinThread(Thread.MAX_PRIORITY); 61 62 slow.setDaemon(true); 63 fast1.setDaemon(true); 64 fast2.setDaemon(true); 65 66 fast2.start(); 67 slow.start(); 68 fast1.start(); 69 try { 70 Thread.sleep(3000); 71 } catch (InterruptedException ie) {/*ignore */} 72 System.gc(); 73 74 System.out.println("b2302318 passes"); 75 } 76 77 static void b2487514Test() { 78 PriorityBlockingQueue q = new PriorityBlockingQueue(10); 79 int catchCount = 0; 80 81 q.offer(new Integer(0)); 82 /* 83 * Warm up the code cache to have toArray() compiled. The key here is 84 * to pass a compatible type so that there are no exceptions when 85 * executing the method body (ie the APUT_OBJECT bytecode). 86 */ 87 for (int i = 0; i < 1000; i++) { 88 Integer[] ints = (Integer[]) q.toArray(new Integer[5]); 89 } 90 91 /* Now pass an incompatible type which is guaranteed to throw */ 92 for (int i = 0; i < 1000; i++) { 93 try { 94 Object[] obj = q.toArray(new String[5]); 95 } 96 catch (ArrayStoreException success) { 97 catchCount++; 98 } 99 } 100 101 if (catchCount == 1000) { 102 System.out.println("b2487514 passes"); 103 } 104 else { 105 System.out.println("b2487514 fails: catchCount is " + catchCount + 106 " (expecting 1000)"); 107 } 108 } 109 110 static void b5884080Test() { 111 int vA = 1; 112 113 int l = 0; 114 do 115 { 116 int k = 0; 117 do 118 vA += 1; 119 while(++k < 100); 120 } while(++l < 1000); 121 if (vA == 100001) { 122 System.out.println("b5884080 passes"); 123 } 124 else { 125 System.out.println("b5884080 fails: vA is " + vA + 126 " (expecting 100001)"); 127 } 128 } 129} 130 131class SpinThread extends Thread { 132 int mPriority; 133 134 SpinThread(int prio) { 135 super("Spin prio=" + prio); 136 mPriority = prio; 137 } 138 139 public void run() { 140 setPriority(mPriority); 141 while (true) {} 142 } 143} 144