29 lines
580 B
C
29 lines
580 B
C
#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <unistd.h>
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void *threadFun(void *vargp) {
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return NULL;
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}
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int main(int argc, char ** argv) {
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pthread_t thread_id;
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int i, n;
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n = atoi(argv[1]);
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struct timeval stop, start;
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gettimeofday(&start, NULL);
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for(i = 0; i < n; i++) {
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pthread_create(&thread_id, NULL, threadFun, NULL);
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pthread_join(thread_id, NULL);
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}
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gettimeofday(&stop, NULL);
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printf("thread %d %luus\n", n, (stop.tv_sec - start.tv_sec) * 1000000 + stop.tv_usec - start.tv_usec);
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return(0);
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}
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