| 1 | #include "test.h" |
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| 2 | #include <time.h> |
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| 3 | |
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| 4 | int bench_nthread; |
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| 5 | int bench_niter; |
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| 6 | int bench_mode; |
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| 7 | |
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| 8 | void bench(); // defined by user |
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| 9 | void start_thread_group(int nth, void(*f)(int tid)); |
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| 10 | |
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| 11 | int main(int argc, char **argv) { |
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| 12 | bench_nthread = 2; |
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| 13 | if (argc > 1) |
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| 14 | bench_nthread = atoi(nptr: argv[1]); |
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| 15 | bench_niter = 100; |
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| 16 | if (argc > 2) |
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| 17 | bench_niter = atoi(nptr: argv[2]); |
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| 18 | if (argc > 3) |
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| 19 | bench_mode = atoi(nptr: argv[3]); |
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| 20 | |
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| 21 | timespec tp0; |
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| 22 | clock_gettime(CLOCK_MONOTONIC, tp: &tp0); |
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| 23 | bench(); |
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| 24 | timespec tp1; |
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| 25 | clock_gettime(CLOCK_MONOTONIC, tp: &tp1); |
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| 26 | unsigned long long t = |
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| 27 | (tp1.tv_sec * 1000000000ULL + tp1.tv_nsec) - |
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| 28 | (tp0.tv_sec * 1000000000ULL + tp0.tv_nsec); |
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| 29 | fprintf(stderr, format: "%llu ns/iter\n" , t / bench_niter); |
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| 30 | fprintf(stderr, format: "DONE\n" ); |
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| 31 | } |
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| 32 | |
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| 33 | void start_thread_group(int nth, void(*f)(int tid)) { |
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| 34 | pthread_t *th = (pthread_t*)malloc(size: nth * sizeof(pthread_t)); |
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| 35 | for (int i = 0; i < nth; i++) |
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| 36 | pthread_create(newthread: &th[i], attr: 0, start_routine: (void*(*)(void*))f, arg: (void*)(long)i); |
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| 37 | for (int i = 0; i < nth; i++) |
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| 38 | pthread_join(th: th[i], thread_return: 0); |
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| 39 | } |
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| 40 | |
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