1 #ifndef HEADER_CURL_CONNCACHE_H 2 #define HEADER_CURL_CONNCACHE_H 3 /*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 2015 - 2017, Daniel Stenberg, <daniel (at) haxx.se>, et al. 11 * Copyright (C) 2012 - 2014, Linus Nielsen Feltzing, <linus (at) haxx.se> 12 * 13 * This software is licensed as described in the file COPYING, which 14 * you should have received as part of this distribution. The terms 15 * are also available at https://curl.haxx.se/docs/copyright.html. 16 * 17 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 18 * copies of the Software, and permit persons to whom the Software is 19 * furnished to do so, under the terms of the COPYING file. 20 * 21 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 22 * KIND, either express or implied. 23 * 24 ***************************************************************************/ 25 26 /* 27 * All accesses to struct fields and changing of data in the connection cache 28 * and connectbundles must be done with the conncache LOCKED. The cache might 29 * be shared. 30 */ 31 32 struct conncache { 33 struct curl_hash hash; 34 size_t num_conn; 35 long next_connection_id; 36 struct curltime last_cleanup; 37 /* handle used for closing cached connections */ 38 struct Curl_easy *closure_handle; 39 }; 40 41 #define BUNDLE_NO_MULTIUSE -1 42 #define BUNDLE_UNKNOWN 0 /* initial value */ 43 #define BUNDLE_PIPELINING 1 44 #define BUNDLE_MULTIPLEX 2 45 46 struct connectbundle { 47 int multiuse; /* supports multi-use */ 48 size_t num_connections; /* Number of connections in the bundle */ 49 struct curl_llist conn_list; /* The connectdata members of the bundle */ 50 }; 51 52 /* returns 1 on error, 0 is fine */ 53 int Curl_conncache_init(struct conncache *, int size); 54 void Curl_conncache_destroy(struct conncache *connc); 55 56 /* return the correct bundle, to a host or a proxy */ 57 struct connectbundle *Curl_conncache_find_bundle(struct connectdata *conn, 58 struct conncache *connc); 59 void Curl_conncache_unlock(struct connectdata *conn); 60 /* returns number of connections currently held in the connection cache */ 61 size_t Curl_conncache_size(struct Curl_easy *data); 62 size_t Curl_conncache_bundle_size(struct connectdata *conn); 63 64 bool Curl_conncache_return_conn(struct connectdata *conn); 65 CURLcode Curl_conncache_add_conn(struct conncache *connc, 66 struct connectdata *conn); 67 void Curl_conncache_remove_conn(struct connectdata *conn, 68 bool lock); 69 bool Curl_conncache_foreach(struct Curl_easy *data, 70 struct conncache *connc, 71 void *param, 72 int (*func)(struct connectdata *conn, 73 void *param)); 74 75 struct connectdata * 76 Curl_conncache_find_first_connection(struct conncache *connc); 77 78 struct connectdata * 79 Curl_conncache_extract_bundle(struct Curl_easy *data, 80 struct connectbundle *bundle); 81 struct connectdata * 82 Curl_conncache_extract_oldest(struct Curl_easy *data); 83 void Curl_conncache_close_all_connections(struct conncache *connc); 84 void Curl_conncache_print(struct conncache *connc); 85 86 #endif /* HEADER_CURL_CONNCACHE_H */ 87
