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comparison mupdf-source/thirdparty/curl/docs/examples/shared-connection-cache.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 * Connection cache shared between easy handles with the share interface
24 * </DESC>
25 */
26 #include <stdio.h>
27 #include <curl/curl.h>
28
29 static void my_lock(CURL *handle, curl_lock_data data,
30 curl_lock_access laccess, void *useptr)
31 {
32 (void)handle;
33 (void)data;
34 (void)laccess;
35 (void)useptr;
36 fprintf(stderr, "-> Mutex lock\n");
37 }
38
39 static void my_unlock(CURL *handle, curl_lock_data data, void *useptr)
40 {
41 (void)handle;
42 (void)data;
43 (void)useptr;
44 fprintf(stderr, "<- Mutex unlock\n");
45 }
46
47 int main(void)
48 {
49 CURLSH *share;
50 int i;
51
52 share = curl_share_init();
53 curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_CONNECT);
54
55 curl_share_setopt(share, CURLSHOPT_LOCKFUNC, my_lock);
56 curl_share_setopt(share, CURLSHOPT_UNLOCKFUNC, my_unlock);
57
58 /* Loop the transfer and cleanup the handle properly every lap. This will
59 still reuse connections since the pool is in the shared object! */
60
61 for(i = 0; i < 3; i++) {
62 CURL *curl = curl_easy_init();
63 if(curl) {
64 CURLcode res;
65
66 curl_easy_setopt(curl, CURLOPT_URL, "https://curl.haxx.se/");
67
68 /* use the share object */
69 curl_easy_setopt(curl, CURLOPT_SHARE, share);
70
71 /* Perform the request, res will get the return code */
72 res = curl_easy_perform(curl);
73 /* Check for errors */
74 if(res != CURLE_OK)
75 fprintf(stderr, "curl_easy_perform() failed: %s\n",
76 curl_easy_strerror(res));
77
78 /* always cleanup */
79 curl_easy_cleanup(curl);
80 }
81 }
82
83 curl_share_cleanup(share);
84 return 0;
85 }