ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumresolv-newwith_gc
Last change
on this file since cc344be was
3eb4541,
checked in by Thierry Delisle <tdelisle@…>, 7 years ago
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Added benchmark for pthread condition variables
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Property mode set to
100644
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File size:
901 bytes
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1 | #include <pthread.h> |
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2 | #include <stdio.h> |
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3 | |
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4 | #include "bench.h" |
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5 | |
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6 | int argc; |
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7 | char** argv; |
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8 | volatile int go = 0; |
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9 | |
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10 | pthread_cond_t c; |
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11 | pthread_mutex_t m; |
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12 | |
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13 | void __attribute__((noinline)) call() { |
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14 | pthread_mutex_lock(&m); |
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15 | pthread_cond_signal(&c); |
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16 | pthread_mutex_unlock(&m); |
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17 | } |
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18 | |
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19 | int __attribute__((noinline)) wait() { |
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20 | pthread_mutex_lock(&m); |
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21 | go = 1; |
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22 | BENCH( |
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23 | for (size_t i = 0; i < n; i++) { |
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24 | pthread_cond_wait(&c, &m); |
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25 | }, |
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26 | result |
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27 | ) |
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28 | |
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29 | printf("%llu\n", result); |
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30 | go = 0; |
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31 | pthread_mutex_unlock(&m); |
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32 | return 0; |
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33 | } |
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34 | |
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35 | void* thread_main(void * a) { |
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36 | while(go == 0) { sched_yield(); } |
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37 | while(go == 1) { call(); } |
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38 | return NULL; |
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39 | } |
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40 | |
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41 | int main(int margc, char* margv[]) { |
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42 | argc = margc; |
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43 | argv = margv; |
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44 | pthread_t thread; |
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45 | if (pthread_create(&thread, NULL, thread_main, NULL) < 0) { |
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46 | perror( "failure" ); |
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47 | return 1; |
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48 | } |
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49 | wait(); |
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50 | if (pthread_join( thread, NULL) < 0) { |
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51 | perror( "failure" ); |
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52 | return 1; |
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53 | } |
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54 | return 0; |
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55 | } |
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