Mercurial > hg > truffle
annotate test/compiler/6946040/TestCharShortByteSwap.java @ 12986:1b422ef5288a
8025728: Missing volatile specifier for field G1AllocRegion::_alloc_region
Summary: The field G1AllocRegion::_alloc_region needs to be declared volatile as it is used with that intention. Otherwise the compiler may generate the code that reloads the value which might have changed in the meantime, leading to spurious crashes.
Reviewed-by: iveresov, simonis, tschatzl
Contributed-by: Axel Siebenborn <axel.siebenborn@sap.com>
| author | tschatzl |
|---|---|
| date | Wed, 23 Oct 2013 10:23:06 +0200 |
| parents | 7369298bec7e |
| children |
| rev | line source |
|---|---|
| 1396 | 1 /* |
| 2 * Copyright 2010 Google, Inc. All Rights Reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 1396 | 22 * |
| 23 */ | |
| 24 | |
| 25 /* | |
| 26 * @test | |
| 27 * @bug 6946040 | |
| 28 * @summary Tests Character/Short.reverseBytes and their intrinsics implementation in the server compiler | |
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29 * @run main/othervm -Xbatch -XX:CompileOnly=.testChar,.testShort TestCharShortByteSwap |
| 1396 | 30 */ |
| 31 | |
| 32 // This test must run without any command line arguments. | |
| 33 | |
| 34 public class TestCharShortByteSwap { | |
| 35 | |
| 36 private static short initShort(String[] args, short v) { | |
| 37 if (args.length > 0) { | |
| 38 try { | |
| 39 return (short) Integer.valueOf(args[0]).intValue(); | |
| 40 } catch (NumberFormatException e) { } | |
| 41 } | |
| 42 return v; | |
| 43 } | |
| 44 | |
| 45 private static char initChar(String[] args, char v) { | |
| 46 if (args.length > 0) { | |
| 47 try { | |
| 48 return (char) Integer.valueOf(args[0]).intValue(); | |
| 49 } catch (NumberFormatException e) { } | |
| 50 } | |
| 51 return v; | |
| 52 } | |
| 53 | |
| 54 private static void testChar(char a, char b) { | |
| 55 if (a != Character.reverseBytes(b)) { | |
| 56 throw new RuntimeException("FAIL: " + (int)a + " != Character.reverseBytes(" + (int)b + ")"); | |
| 57 } | |
| 58 if (b != Character.reverseBytes(a)) { | |
| 59 throw new RuntimeException("FAIL: " + (int)b + " != Character.reverseBytes(" + (int)a + ")"); | |
| 60 } | |
| 61 } | |
| 62 | |
| 63 private static void testShort(short a, short b) { | |
| 64 if (a != Short.reverseBytes(b)) { | |
| 65 throw new RuntimeException("FAIL: " + (int)a + " != Short.reverseBytes(" + (int)b + ")"); | |
| 66 } | |
| 67 if (b != Short.reverseBytes(a)) { | |
| 68 throw new RuntimeException("FAIL: " + (int)b + " != Short.reverseBytes(" + (int)a + ")"); | |
| 69 } | |
| 70 } | |
| 71 | |
| 72 public static void main(String[] args) { | |
| 73 for (int i = 0; i < 100000; ++i) { // Trigger compilation | |
| 74 char c1 = initChar(args, (char) 0x0123); | |
| 75 char c2 = initChar(args, (char) 0x2301); | |
| 76 char c3 = initChar(args, (char) 0xaabb); | |
| 77 char c4 = initChar(args, (char) 0xbbaa); | |
| 78 short s1 = initShort(args, (short) 0x0123); | |
| 79 short s2 = initShort(args, (short) 0x2301); | |
| 80 short s3 = initShort(args, (short) 0xaabb); | |
| 81 short s4 = initShort(args, (short) 0xbbaa); | |
| 82 testChar(c1, c2); | |
| 83 testChar(c3, c4); | |
| 84 testShort(s1, s2); | |
| 85 testShort(s3, s4); | |
| 86 } | |
| 87 } | |
| 88 } |