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150
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1 // RUN: %clangxx_tsan %s -o %t
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2 // RUN: %run %t 2>&1 | FileCheck %s
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3
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4 // bench.h needs pthread barriers which are not available on OS X
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5 // UNSUPPORTED: darwin
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6
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7 #include "bench.h"
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8
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9 pthread_mutex_t *mtx;
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10 const int kStride = 16;
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11
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12 void thread(int tid) {
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13 for (int i = 0; i < bench_niter; i++) {
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14 pthread_mutex_lock(&mtx[tid * kStride]);
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15 pthread_mutex_unlock(&mtx[tid * kStride]);
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16 }
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17 }
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18
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19 void bench() {
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20 mtx = (pthread_mutex_t*)malloc(bench_nthread * kStride * sizeof(*mtx));
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21 for (int i = 0; i < bench_nthread; i++) {
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22 pthread_mutex_init(&mtx[i * kStride], 0);
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23 pthread_mutex_lock(&mtx[i * kStride]);
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24 pthread_mutex_unlock(&mtx[i * kStride]);
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25 }
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26 start_thread_group(bench_nthread, thread);
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27 }
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28
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29 // CHECK: DONE
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30
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