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comparison mupdf-source/thirdparty/curl/docs/examples/multithread.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22 /* <DESC>
23 * A multi-threaded example that uses pthreads to fetch several files at once
24 * </DESC>
25 */
26
27 #include <stdio.h>
28 #include <pthread.h>
29 #include <curl/curl.h>
30
31 #define NUMT 4
32
33 /*
34 List of URLs to fetch.
35
36 If you intend to use a SSL-based protocol here you might need to setup TLS
37 library mutex callbacks as described here:
38
39 https://curl.haxx.se/libcurl/c/threadsafe.html
40
41 */
42 const char * const urls[NUMT]= {
43 "https://curl.haxx.se/",
44 "ftp://cool.haxx.se/",
45 "https://www.cag.se/",
46 "www.haxx.se"
47 };
48
49 static void *pull_one_url(void *url)
50 {
51 CURL *curl;
52
53 curl = curl_easy_init();
54 curl_easy_setopt(curl, CURLOPT_URL, url);
55 curl_easy_perform(curl); /* ignores error */
56 curl_easy_cleanup(curl);
57
58 return NULL;
59 }
60
61
62 /*
63 int pthread_create(pthread_t *new_thread_ID,
64 const pthread_attr_t *attr,
65 void * (*start_func)(void *), void *arg);
66 */
67
68 int main(int argc, char **argv)
69 {
70 pthread_t tid[NUMT];
71 int i;
72
73 /* Must initialize libcurl before any threads are started */
74 curl_global_init(CURL_GLOBAL_ALL);
75
76 for(i = 0; i< NUMT; i++) {
77 int error = pthread_create(&tid[i],
78 NULL, /* default attributes please */
79 pull_one_url,
80 (void *)urls[i]);
81 if(0 != error)
82 fprintf(stderr, "Couldn't run thread number %d, errno %d\n", i, error);
83 else
84 fprintf(stderr, "Thread %d, gets %s\n", i, urls[i]);
85 }
86
87 /* now wait for all threads to terminate */
88 for(i = 0; i< NUMT; i++) {
89 pthread_join(tid[i], NULL);
90 fprintf(stderr, "Thread %d terminated\n", i);
91 }
92
93 return 0;
94 }