1/*
2 * Copyright (c) 2017, Oracle and/or its affiliates. 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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/*
25 * @test
26 * @bug 8184271
27 * @summary Test correct scheduling of System.nanoTime and System.currentTimeMillis C1 intrinsics.
28 * @run main/othervm -XX:TieredStopAtLevel=1 -Xbatch
29 *                   -XX:CompileCommand=dontinline,compiler.c1.TestPinnedIntrinsics::checkNanoTime
30 *                   -XX:CompileCommand=dontinline,compiler.c1.TestPinnedIntrinsics::checkCurrentTimeMillis
31 *                   compiler.c1.TestPinnedIntrinsics
32 */
33
34package compiler.c1;
35
36public class TestPinnedIntrinsics {
37
38    private static void testNanoTime() {
39        long start = System.nanoTime();
40        long end = System.nanoTime();
41        checkNanoTime(end - start);
42    }
43
44    private static void checkNanoTime(long diff) {
45        if (diff < 0) {
46            throw new RuntimeException("testNanoTime failed with " + diff);
47        }
48    }
49
50    private static void testCurrentTimeMillis() {
51        long start = System.currentTimeMillis();
52        long end = System.currentTimeMillis();
53        checkCurrentTimeMillis(end - start);
54    }
55
56    private static void checkCurrentTimeMillis(long diff) {
57        if (diff < 0) {
58            throw new RuntimeException("testCurrentTimeMillis failed with " + diff);
59        }
60    }
61
62    public static void main(String[] args) {
63        for (int i = 0; i < 100_000; ++i) {
64            testNanoTime();
65            testCurrentTimeMillis();
66        }
67    }
68}
69