83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/*****************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* $Id: multithread.c,v 1.4 2008-04-03 20:28:33 danf Exp $
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*/
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/* A multi-threaded example that uses pthreads extensively to fetch
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* X remote files at once */
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#include <stdio.h>
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#include <pthread.h>
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#include <curl/curl.h>
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#define NUMT 4
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/*
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List of URLs to fetch.
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If you intend to use a SSL-based protocol here you MUST setup the OpenSSL
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callback functions as described here:
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http://www.openssl.org/docs/crypto/threads.html#DESCRIPTION
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*/
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const char * const urls[NUMT]= {
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"http://curl.haxx.se/",
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"ftp://cool.haxx.se/",
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"http://www.contactor.se/",
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"www.haxx.se"
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};
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static void *pull_one_url(void *url)
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{
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CURL *curl;
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curl = curl_easy_init();
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curl_easy_setopt(curl, CURLOPT_URL, url);
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curl_easy_perform(curl); /* ignores error */
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curl_easy_cleanup(curl);
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return NULL;
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}
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/*
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int pthread_create(pthread_t *new_thread_ID,
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const pthread_attr_t *attr,
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void * (*start_func)(void *), void *arg);
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*/
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int main(int argc, char **argv)
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{
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pthread_t tid[NUMT];
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int i;
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int error;
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/* Must initialize libcurl before any threads are started */
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curl_global_init(CURL_GLOBAL_ALL);
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for(i=0; i< NUMT; i++) {
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error = pthread_create(&tid[i],
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NULL, /* default attributes please */
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pull_one_url,
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(void *)urls[i]);
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if(0 != error)
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fprintf(stderr, "Couldn't run thread number %d, errno %d\n", i, error);
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else
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fprintf(stderr, "Thread %d, gets %s\n", i, urls[i]);
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}
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/* now wait for all threads to terminate */
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for(i=0; i< NUMT; i++) {
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error = pthread_join(tid[i], NULL);
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fprintf(stderr, "Thread %d terminated\n", i);
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}
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return 0;
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}
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