| 1 | /*
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| 2 | Copyright (c) 2017, Lawrence Livermore National Security, LLC.
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| 3 | Produced at the Lawrence Livermore National Laboratory
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| 4 | Written by Chunhua Liao, Pei-Hung Lin, Joshua Asplund,
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| 5 | Markus Schordan, and Ian Karlin
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| 6 | (email: liao6@llnl.gov, lin32@llnl.gov, asplund1@llnl.gov,
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| 7 | schordan1@llnl.gov, karlin1@llnl.gov)
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| 8 | LLNL-CODE-732144
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| 9 | All rights reserved.
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| 10 |
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| 11 | This file is part of DataRaceBench. For details, see
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| 12 | https://github.com/LLNL/dataracebench. Please also see the LICENSE file
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| 13 | for our additional BSD notice.
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| 14 |
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| 15 | Redistribution and use in source and binary forms, with
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| 16 | or without modification, are permitted provided that the following
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| 17 | conditions are met:
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| 18 |
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| 19 | * Redistributions of source code must retain the above copyright
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| 20 | notice, this list of conditions and the disclaimer below.
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| 21 |
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| 22 | * Redistributions in binary form must reproduce the above copyright
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| 23 | notice, this list of conditions and the disclaimer (as noted below)
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| 24 | in the documentation and/or other materials provided with the
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| 25 | distribution.
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| 26 |
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| 27 | * Neither the name of the LLNS/LLNL nor the names of its contributors
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| 28 | may be used to endorse or promote products derived from this
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| 29 | software without specific prior written permission.
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| 30 |
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| 31 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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| 32 | CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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| 33 | INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 34 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 35 | DISCLAIMED. IN NO EVENT SHALL LAWRENCE LIVERMORE NATIONAL
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| 36 | SECURITY, LLC, THE U.S. DEPARTMENT OF ENERGY OR CONTRIBUTORS BE
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| 37 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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| 38 | OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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| 39 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 40 | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 41 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 42 | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 43 | IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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| 44 | THE POSSIBILITY OF SUCH DAMAGE.
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| 45 | */
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| 46 | /*
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| 47 | Two-dimensional array computation:
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| 48 | Only one loop is associated with omp taskloop.
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| 49 | The inner loop's loop iteration variable will be shared if it is shared in the enclosing context.
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| 50 | Data race pairs (we allow multiple ones to preserve the pattern):
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| 51 | Write_set = {j@69:14, j@69:30, a[i][j]@70:11}
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| 52 | Read_set = {j@69:21, j@69:30, j@70:16, a[i][j]@70:11}
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| 53 | Any pair from Write_set vs. Write_set and Write_set vs. Read_set is a data race pair.
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| 54 | */
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| 55 | #if (_OPENMP<201511)
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| 56 | #error "An OpenMP 4.5 compiler is needed to compile this test."
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| 57 | #endif
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| 58 | #include <stdio.h>
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| 59 | int a[100][100];
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| 60 | int main()
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| 61 | {
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| 62 | int i, j;
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| 63 | #pragma omp parallel
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| 64 | {
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| 65 | #pragma omp single
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| 66 | {
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| 67 | #pragma omp taskloop
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| 68 | for (i = 0; i < 100; i++)
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| 69 | for (j = 0; j < 100; j++)
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| 70 | a[i][j]+=1;
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| 71 | }
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| 72 | }
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| 73 | printf ("a[50][50]=%d\n", a[50][50]);
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| 74 | return 0;
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| 75 | }
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