Utilities/cmcurl/Testing/multithread.c

   1 /*****************************************************************************
   2  *                                  _   _ ____  _
   3  *  Project                     ___| | | |  _ \| |
   4  *                             / __| | | | |_) | |
   5  *                            | (__| |_| |  _ <| |___
   6  *                             \___|\___/|_| \_\_____|
   7  *
   8  * $Id: multithread.c,v 1.1 2005-06-24 13:02:16 andy Exp $
   9  */
  10
  11 /* A multi-threaded example that uses pthreads extensively to fetch
  12  * X remote files at once */
  13
  14 #include <stdio.h>
  15 #include <pthread.h>
  16 #include <curl/curl.h>
  17
  18 /* silly list of test-URLs */
  19 char *urls[]= {
  20   "http://curl.haxx.se/",
  21   "ftp://cool.haxx.se/",
  22   "http://www.contactor.se/",
  23   "www.haxx.se"
  24 };
  25
  26 void *pull_one_url(void *url)
  27 {
  28   CURL *curl;
  29
  30   curl = curl_easy_init();
  31
  32   curl_easy_setopt(curl, CURLOPT_URL, url);
  33   curl_easy_perform(curl);
  34
  35   curl_easy_cleanup(curl);
  36
  37   return NULL;
  38 }
  39
  40
  41 /*
  42    int pthread_create(pthread_t *new_thread_ID,
  43    const pthread_attr_t *attr,
  44    void * (*start_func)(void *), void *arg);
  45 */
  46
  47 int main(int argc, char **argv)
  48 {
  49   pthread_t tid[4];
  50   int i;
  51   int error;
  52   for(i=0; i< 4; i++) {
  53     error = pthread_create(&tid[i],
  54                            NULL, /* default attributes please */
  55                            pull_one_url,
  56                            urls[i]);
  57     if(0 != error)
  58       fprintf(stderr, "Couldn't run thread number %d, errno %d\n", i, error);
  59     else
  60       fprintf(stderr, "Thread %d, gets %s\n", i, urls[i]);
  61   }
  62
  63   /* now wait for all threads to terminate */
  64   for(i=0; i< 4; i++) {
  65     error = pthread_join(tid[i], NULL);
  66     fprintf(stderr, "Thread %d terminated\n", i);
  67   }
  68
  69   return 0;
  70 }