Mercurial > jdk8-mips64-public > hotspot / annotate
test/compiler/c1/TestPinnedIntrinsics.java@35fe0be5277b (annotated)
test/compiler/c1/TestPinnedIntrinsics.java
Thu, 10 Aug 2017 12:08:50 +0530
- author
- thartmann
- date
- Thu, 10 Aug 2017 12:08:50 +0530
- changeset 8884
- 35fe0be5277b
- permissions
- -rw-r--r--
8184271: Time related C1 intrinsics produce inconsistent results when floating around
Summary: C1 intrinsics for System.nanoTime(), System.currentTimeMillis() and JVM.counterTime() should be pinned.
Reviewed-by: kvn, vlivanov, iveresov
| thartmann@8884 | 1 | /* |
| thartmann@8884 | 2 | * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. |
| thartmann@8884 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| thartmann@8884 | 4 | * |
| thartmann@8884 | 5 | * This code is free software; you can redistribute it and/or modify it |
| thartmann@8884 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| thartmann@8884 | 7 | * published by the Free Software Foundation. |
| thartmann@8884 | 8 | * |
| thartmann@8884 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| thartmann@8884 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| thartmann@8884 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| thartmann@8884 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| thartmann@8884 | 13 | * accompanied this code). |
| thartmann@8884 | 14 | * |
| thartmann@8884 | 15 | * You should have received a copy of the GNU General Public License version |
| thartmann@8884 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| thartmann@8884 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| thartmann@8884 | 18 | * |
| thartmann@8884 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| thartmann@8884 | 20 | * or visit www.oracle.com if you need additional information or have any |
| thartmann@8884 | 21 | * questions. |
| thartmann@8884 | 22 | */ |
| thartmann@8884 | 23 | |
| thartmann@8884 | 24 | /* |
| thartmann@8884 | 25 | * @test |
| thartmann@8884 | 26 | * @bug 8184271 |
| thartmann@8884 | 27 | * @summary Test correct scheduling of System.nanoTime and System.currentTimeMillis C1 intrinsics. |
| thartmann@8884 | 28 | * @run main/othervm -XX:TieredStopAtLevel=1 -Xbatch |
| thartmann@8884 | 29 | * -XX:CompileCommand=dontinline,compiler.c1.TestPinnedIntrinsics::checkNanoTime |
| thartmann@8884 | 30 | * -XX:CompileCommand=dontinline,compiler.c1.TestPinnedIntrinsics::checkCurrentTimeMillis |
| thartmann@8884 | 31 | * compiler.c1.TestPinnedIntrinsics |
| thartmann@8884 | 32 | */ |
| thartmann@8884 | 33 | |
| thartmann@8884 | 34 | package compiler.c1; |
| thartmann@8884 | 35 | |
| thartmann@8884 | 36 | public class TestPinnedIntrinsics { |
| thartmann@8884 | 37 | |
| thartmann@8884 | 38 | private static void testNanoTime() { |
| thartmann@8884 | 39 | long start = System.nanoTime(); |
| thartmann@8884 | 40 | long end = System.nanoTime(); |
| thartmann@8884 | 41 | checkNanoTime(end - start); |
| thartmann@8884 | 42 | } |
| thartmann@8884 | 43 | |
| thartmann@8884 | 44 | private static void checkNanoTime(long diff) { |
| thartmann@8884 | 45 | if (diff < 0) { |
| thartmann@8884 | 46 | throw new RuntimeException("testNanoTime failed with " + diff); |
| thartmann@8884 | 47 | } |
| thartmann@8884 | 48 | } |
| thartmann@8884 | 49 | |
| thartmann@8884 | 50 | private static void testCurrentTimeMillis() { |
| thartmann@8884 | 51 | long start = System.currentTimeMillis(); |
| thartmann@8884 | 52 | long end = System.currentTimeMillis(); |
| thartmann@8884 | 53 | checkCurrentTimeMillis(end - start); |
| thartmann@8884 | 54 | } |
| thartmann@8884 | 55 | |
| thartmann@8884 | 56 | private static void checkCurrentTimeMillis(long diff) { |
| thartmann@8884 | 57 | if (diff < 0) { |
| thartmann@8884 | 58 | throw new RuntimeException("testCurrentTimeMillis failed with " + diff); |
| thartmann@8884 | 59 | } |
| thartmann@8884 | 60 | } |
| thartmann@8884 | 61 | |
| thartmann@8884 | 62 | public static void main(String[] args) { |
| thartmann@8884 | 63 | for (int i = 0; i < 100_000; ++i) { |
| thartmann@8884 | 64 | testNanoTime(); |
| thartmann@8884 | 65 | testCurrentTimeMillis(); |
| thartmann@8884 | 66 | } |
| thartmann@8884 | 67 | } |
| thartmann@8884 | 68 | } |
