Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/examples/shared-connection-cache.c @ 32:72c1b70d4f5c

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author Franz Glasner <fzglas.hg@dom66.de>
date Sun, 21 Sep 2025 15:10:12 +0200
parents b50eed0cc0ef
children
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1 /***************************************************************************
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2 * _ _ ____ _
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3 * Project ___| | | | _ \| |
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4 * / __| | | | |_) | |
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5 * | (__| |_| | _ <| |___
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6 * \___|\___/|_| \_\_____|
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7 *
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8 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 *
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10 * This software is licensed as described in the file COPYING, which
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11 * you should have received as part of this distribution. The terms
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12 * are also available at https://curl.haxx.se/docs/copyright.html.
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13 *
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14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 * copies of the Software, and permit persons to whom the Software is
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16 * furnished to do so, under the terms of the COPYING file.
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17 *
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18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 * KIND, either express or implied.
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20 *
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21 ***************************************************************************/
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22 /* <DESC>
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23 * Connection cache shared between easy handles with the share interface
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24 * </DESC>
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25 */
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26 #include <stdio.h>
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27 #include <curl/curl.h>
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29 static void my_lock(CURL *handle, curl_lock_data data,
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30 curl_lock_access laccess, void *useptr)
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31 {
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32 (void)handle;
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33 (void)data;
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34 (void)laccess;
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35 (void)useptr;
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36 fprintf(stderr, "-> Mutex lock\n");
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37 }
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39 static void my_unlock(CURL *handle, curl_lock_data data, void *useptr)
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40 {
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41 (void)handle;
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42 (void)data;
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43 (void)useptr;
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44 fprintf(stderr, "<- Mutex unlock\n");
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45 }
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47 int main(void)
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48 {
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49 CURLSH *share;
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50 int i;
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52 share = curl_share_init();
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53 curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_CONNECT);
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55 curl_share_setopt(share, CURLSHOPT_LOCKFUNC, my_lock);
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56 curl_share_setopt(share, CURLSHOPT_UNLOCKFUNC, my_unlock);
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58 /* Loop the transfer and cleanup the handle properly every lap. This will
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59 still reuse connections since the pool is in the shared object! */
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61 for(i = 0; i < 3; i++) {
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62 CURL *curl = curl_easy_init();
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63 if(curl) {
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64 CURLcode res;
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66 curl_easy_setopt(curl, CURLOPT_URL, "https://curl.haxx.se/");
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68 /* use the share object */
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69 curl_easy_setopt(curl, CURLOPT_SHARE, share);
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71 /* Perform the request, res will get the return code */
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72 res = curl_easy_perform(curl);
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73 /* Check for errors */
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74 if(res != CURLE_OK)
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75 fprintf(stderr, "curl_easy_perform() failed: %s\n",
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76 curl_easy_strerror(res));
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78 /* always cleanup */
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79 curl_easy_cleanup(curl);
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80 }
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81 }
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83 curl_share_cleanup(share);
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84 return 0;
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85 }