/***************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * $Id$ */ /* A multi-threaded example that uses pthreads extensively to fetch * X remote files at once */ #include <stdio.h> #include <pthread.h> #include <curl/curl.h> /* List of URLs to fetch. If you intend to use a SSL-based protocol here you MUST setup the OpenSSL callback functions as described here: http://www.openssl.org/docs/crypto/threads.html#DESCRIPTION */ char *urls[]= { "http://curl.haxx.se/", "ftp://cool.haxx.se/", "http://www.contactor.se/", "www.haxx.se" }; void *pull_one_url(void *url) { CURL *curl; curl = curl_easy_init(); curl_easy_setopt(curl, CURLOPT_URL, url); curl_easy_perform(curl); /* ignores error */ curl_easy_cleanup(curl); return NULL; } /* int pthread_create(pthread_t *new_thread_ID, const pthread_attr_t *attr, void * (*start_func)(void *), void *arg); */ int main(int argc, char **argv) { pthread_t tid[4]; int i; int error; for(i=0; i< 4; i++) { error = pthread_create(&tid[i], NULL, /* default attributes please */ pull_one_url, urls[i]); if(0 != error) fprintf(stderr, "Couldn't run thread number %d, errno %d\n", i, error); else fprintf(stderr, "Thread %d, gets %s\n", i, urls[i]); } /* now wait for all threads to terminate */ for(i=0; i< 4; i++) { error = pthread_join(tid[i], NULL); fprintf(stderr, "Thread %d terminated\n", i); } return 0; }