97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
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/***************************************************************************
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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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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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/* <DESC>
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* A multi-threaded program using pthreads to fetch several files at once
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* </DESC>
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*/
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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 might need to setup TLS
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library mutex callbacks as described here:
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https://curl.se/libcurl/c/threadsafe.html
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*/
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const char * const urls[NUMT]= {
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"https://curl.se/",
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"ftp://example.com/",
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"https://example.net/",
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"www.example"
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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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/* 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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int 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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pthread_join(tid[i], NULL);
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fprintf(stderr, "Thread %d terminated\n", i);
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}
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curl_global_cleanup();
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return 0;
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}
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