multithreaded fast C code to benchmark stuffs fast

multithreadedcurl.c

#include <curl/curl.h>
#include <omp.h>

#define MAX_THREAD 32
#define LASERS 100
#define URL "http://www.example.com"
 
int main(int argc, char *argv[]) {
  int tid, i = 0;
  FILE *devnull;
  devnull = fopen("/dev/null", "w");
  #pragma omp parallel private(i) num_threads(MAX_THREAD)
  {
  #pragma omp for
    for(i = 0; i < LASERS; ++i) {
      tid = omp_get_thread_num();
 
      CURLcode ret;
      CURL *hnd;
      double total;
      curl_off_t dl, rate;
     
      hnd = curl_easy_init();
      curl_easy_setopt(hnd, CURLOPT_URL, URL);
      curl_easy_setopt(hnd, CURLOPT_NOPROGRESS, 1L);
      curl_easy_setopt(hnd, CURLOPT_WRITEDATA, devnull);

      ret = curl_easy_perform(hnd);
      if(ret == CURLE_OK) {
        curl_easy_getinfo(hnd, CURLINFO_TOTAL_TIME, &total);
        curl_easy_getinfo(hnd, CURLINFO_SIZE_DOWNLOAD_T, &dl);
        curl_easy_getinfo(hnd, CURLINFO_SPEED_DOWNLOAD_T, &rate);
        printf("thread = %d,  task = %d --- time : %.7f --- size=%" CURL_FORMAT_CURL_OFF_T
               ", rate=%" CURL_FORMAT_CURL_OFF_T "b/s\n", tid, i, total, dl, rate);
      }
      curl_easy_cleanup(hnd);
      hnd = NULL;
    }
  }
  return 0;
}