Thu, 29 Nov 2012 11:30:04 -0800
Added tag jdk8-b66 for changeset 01684f7fee1b
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | /** |
aoqi@0 | 26 | * @test |
aoqi@0 | 27 | * @bug 7100757 |
aoqi@0 | 28 | * @summary The BitSet.nextSetBit() produces incorrect result in 32bit VM on Sparc |
aoqi@0 | 29 | * |
aoqi@0 | 30 | * @run main/timeout=300 Test7100757 |
aoqi@0 | 31 | */ |
aoqi@0 | 32 | |
aoqi@0 | 33 | import java.util.*; |
aoqi@0 | 34 | |
aoqi@0 | 35 | public class Test7100757 { |
aoqi@0 | 36 | |
aoqi@0 | 37 | public static final int NBITS = 256; |
aoqi@0 | 38 | |
aoqi@0 | 39 | public static void main(String[] args) { |
aoqi@0 | 40 | |
aoqi@0 | 41 | BitSet bs = new BitSet(NBITS); |
aoqi@0 | 42 | Random rnd = new Random(); |
aoqi@0 | 43 | long[] ra = new long[(NBITS+63)/64]; |
aoqi@0 | 44 | |
aoqi@0 | 45 | for(int l=0; l < 5000000; l++) { |
aoqi@0 | 46 | |
aoqi@0 | 47 | for(int r = 0; r < ra.length; r++) { |
aoqi@0 | 48 | ra[r] = rnd.nextLong(); |
aoqi@0 | 49 | } |
aoqi@0 | 50 | test(ra, bs); |
aoqi@0 | 51 | } |
aoqi@0 | 52 | } |
aoqi@0 | 53 | |
aoqi@0 | 54 | static void test(long[] ra, BitSet bs) { |
aoqi@0 | 55 | bs.clear(); |
aoqi@0 | 56 | int bits_set = 0; |
aoqi@0 | 57 | for(int i = 0, t = 0, b = 0; i < NBITS; i++) { |
aoqi@0 | 58 | long bit = 1L << b++; |
aoqi@0 | 59 | if((ra[t]&bit) != 0) { |
aoqi@0 | 60 | bs.set(i); |
aoqi@0 | 61 | bits_set++; |
aoqi@0 | 62 | } |
aoqi@0 | 63 | if(b == 64) { |
aoqi@0 | 64 | t++; |
aoqi@0 | 65 | b = 0; |
aoqi@0 | 66 | } |
aoqi@0 | 67 | } |
aoqi@0 | 68 | // Test Long.bitCount() |
aoqi@0 | 69 | int check_bits = bs.cardinality(); |
aoqi@0 | 70 | if (check_bits != bits_set) { |
aoqi@0 | 71 | String bs_str = bs.toString(); |
aoqi@0 | 72 | System.err.printf("cardinality bits: %d != %d bs: %s\n", check_bits, bits_set, bs_str); |
aoqi@0 | 73 | System.exit(97); |
aoqi@0 | 74 | } |
aoqi@0 | 75 | // Test Long.numberOfTrailingZeros() |
aoqi@0 | 76 | check_bits = 0; |
aoqi@0 | 77 | for (int i = bs.nextSetBit(0); i >= 0; i = bs.nextSetBit(i+1)) { |
aoqi@0 | 78 | check_bits++; |
aoqi@0 | 79 | } |
aoqi@0 | 80 | if (check_bits != bits_set) { |
aoqi@0 | 81 | String bs_str = bs.toString(); |
aoqi@0 | 82 | System.err.printf("nextSetBit bits: %d != %d bs: %s\n", check_bits, bits_set, bs_str); |
aoqi@0 | 83 | System.exit(97); |
aoqi@0 | 84 | } |
aoqi@0 | 85 | // Test Long.numberOfLeadingZeros() |
aoqi@0 | 86 | for(int i = bs.length(); i > 0; i = bs.length()) { |
aoqi@0 | 87 | bs.clear(i-1); |
aoqi@0 | 88 | } |
aoqi@0 | 89 | // Test Long.bitCount() |
aoqi@0 | 90 | check_bits = bs.cardinality(); |
aoqi@0 | 91 | if (check_bits != 0) { |
aoqi@0 | 92 | String bs_str = bs.toString(); |
aoqi@0 | 93 | System.err.printf("after clear bits: %d != 0 bs: %s\n", check_bits, bs_str); |
aoqi@0 | 94 | System.exit(97); |
aoqi@0 | 95 | } |
aoqi@0 | 96 | } |
aoqi@0 | 97 | |
aoqi@0 | 98 | }; |