quickjs-tart

quickjs-based runtime for wallet-core logic
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shared-connection-cache.c (2588B)

      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) 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.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  * SPDX-License-Identifier: curl
     22  *
     23  ***************************************************************************/
     24 /* <DESC>
     25  * Connection cache shared between easy handles with the share interface
     26  * </DESC>
     27  */
     28 #include <stdio.h>
     29 #include <curl/curl.h>
     30 
     31 static void my_lock(CURL *handle, curl_lock_data data,
     32                     curl_lock_access laccess, void *useptr)
     33 {
     34   (void)handle;
     35   (void)data;
     36   (void)laccess;
     37   (void)useptr;
     38   fprintf(stderr, "-> Mutex lock\n");
     39 }
     40 
     41 static void my_unlock(CURL *handle, curl_lock_data data, void *useptr)
     42 {
     43   (void)handle;
     44   (void)data;
     45   (void)useptr;
     46   fprintf(stderr, "<- Mutex unlock\n");
     47 }
     48 
     49 int main(void)
     50 {
     51   CURLSH *share;
     52   int i;
     53 
     54   share = curl_share_init();
     55   curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_CONNECT);
     56 
     57   curl_share_setopt(share, CURLSHOPT_LOCKFUNC, my_lock);
     58   curl_share_setopt(share, CURLSHOPT_UNLOCKFUNC, my_unlock);
     59 
     60   /* Loop the transfer and cleanup the handle properly every lap. This still
     61      reuses connections since the pool is in the shared object! */
     62 
     63   for(i = 0; i < 3; i++) {
     64     CURL *curl = curl_easy_init();
     65     if(curl) {
     66       CURLcode res;
     67 
     68       curl_easy_setopt(curl, CURLOPT_URL, "https://curl.se/");
     69 
     70       /* use the share object */
     71       curl_easy_setopt(curl, CURLOPT_SHARE, share);
     72 
     73       /* Perform the request, res gets the return code */
     74       res = curl_easy_perform(curl);
     75       /* Check for errors */
     76       if(res != CURLE_OK)
     77         fprintf(stderr, "curl_easy_perform() failed: %s\n",
     78                 curl_easy_strerror(res));
     79 
     80       /* always cleanup */
     81       curl_easy_cleanup(curl);
     82     }
     83   }
     84 
     85   curl_share_cleanup(share);
     86   return 0;
     87 }