09b9fc9009
The motivation for having a separate struct that keep track of an easy
handle when using the multi handle was removed when we switched to
always using the multi interface internally. Now they were just two
separate struct that was always allocated for each easy handle.
This first step just moves the Curl_one_easy struct members into the
SessionHandle struct and hides this somehow (== keeps the source code
changes to a minimum) by defining Curl_one_easy to SessionHandle
The biggest changes in this commit are:
1 - the linked list of easy handles had to be changed somewhat due
to the new struct layout. This made the main linked list pointer
get renamed to 'easyp' and there's also a new pointer to the last
node, called easylp. It is no longer circular but ends with ->next
pointing to NULL. New nodes are still added last.
2 - easy->state is now called easy->mstate to avoid name collision
142 lines
5.9 KiB
C
142 lines
5.9 KiB
C
#ifndef HEADER_CURL_MULTIHANDLE_H
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#define HEADER_CURL_MULTIHANDLE_H
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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struct Curl_message {
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/* the 'CURLMsg' is the part that is visible to the external user */
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struct CURLMsg extmsg;
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};
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/* NOTE: if you add a state here, add the name to the statename[] array as
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well!
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*/
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typedef enum {
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CURLM_STATE_INIT, /* 0 - start in this state */
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CURLM_STATE_CONNECT_PEND, /* 1 - no connections, waiting for one */
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CURLM_STATE_CONNECT, /* 2 - resolve/connect has been sent off */
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CURLM_STATE_WAITRESOLVE, /* 3 - awaiting the resolve to finalize */
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CURLM_STATE_WAITCONNECT, /* 4 - awaiting the connect to finalize */
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CURLM_STATE_WAITPROXYCONNECT, /* 5 - awaiting proxy CONNECT to finalize */
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CURLM_STATE_PROTOCONNECT, /* 6 - completing the protocol-specific connect
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phase */
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CURLM_STATE_WAITDO, /* 7 - wait for our turn to send the request */
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CURLM_STATE_DO, /* 8 - start send off the request (part 1) */
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CURLM_STATE_DOING, /* 9 - sending off the request (part 1) */
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CURLM_STATE_DO_MORE, /* 10 - send off the request (part 2) */
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CURLM_STATE_DO_DONE, /* 11 - done sending off request */
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CURLM_STATE_WAITPERFORM, /* 12 - wait for our turn to read the response */
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CURLM_STATE_PERFORM, /* 13 - transfer data */
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CURLM_STATE_TOOFAST, /* 14 - wait because limit-rate exceeded */
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CURLM_STATE_DONE, /* 15 - post data transfer operation */
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CURLM_STATE_COMPLETED, /* 16 - operation complete */
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CURLM_STATE_MSGSENT, /* 17 - the operation complete message is sent */
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CURLM_STATE_LAST /* 18 - not a true state, never use this */
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} CURLMstate;
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/* we support N sockets per easy handle. Set the corresponding bit to what
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action we should wait for */
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#define MAX_SOCKSPEREASYHANDLE 5
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#define GETSOCK_READABLE (0x00ff)
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#define GETSOCK_WRITABLE (0xff00)
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#define Curl_one_easy SessionHandle
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/* This is the struct known as CURLM on the outside */
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struct Curl_multi {
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/* First a simple identifier to easier detect if a user mix up
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this multi handle with an easy handle. Set this to CURL_MULTI_HANDLE. */
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long type;
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/* We have a doubly-linked circular list with easy handles */
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struct Curl_one_easy *easyp;
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struct Curl_one_easy *easylp; /* last node */
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int num_easy; /* amount of entries in the linked list above. */
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int num_alive; /* amount of easy handles that are added but have not yet
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reached COMPLETE state */
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struct curl_llist *msglist; /* a list of messages from completed transfers */
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/* callback function and user data pointer for the *socket() API */
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curl_socket_callback socket_cb;
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void *socket_userp;
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/* Hostname cache */
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struct curl_hash *hostcache;
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/* timetree points to the splay-tree of time nodes to figure out expire
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times of all currently set timers */
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struct Curl_tree *timetree;
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/* 'sockhash' is the lookup hash for socket descriptor => easy handles (note
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the pluralis form, there can be more than one easy handle waiting on the
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same actual socket) */
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struct curl_hash *sockhash;
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/* Whether pipelining is enabled for this multi handle */
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bool pipelining_enabled;
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/* Shared connection cache (bundles)*/
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struct conncache *conn_cache;
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/* This handle will be used for closing the cached connections in
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curl_multi_cleanup() */
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struct SessionHandle *closure_handle;
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long maxconnects; /* if >0, a fixed limit of the maximum number of entries
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we're allowed to grow the connection cache to */
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long max_host_connections; /* if >0, a fixed limit of the maximum number
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of connections per host */
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long max_total_connections; /* if >0, a fixed limit of the maximum number
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of connections in total */
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long max_pipeline_length; /* if >0, maximum number of requests in a
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pipeline */
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long content_length_penalty_size; /* a connection with a
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content-length bigger than
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this is not considered
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for pipelining */
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long chunk_length_penalty_size; /* a connection with a chunk length
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bigger than this is not
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considered for pipelining */
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struct curl_llist *pipelining_site_bl; /* List of sites that are blacklisted
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from pipelining */
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struct curl_llist *pipelining_server_bl; /* List of server types that are
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blacklisted from pipelining */
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/* timer callback and user data pointer for the *socket() API */
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curl_multi_timer_callback timer_cb;
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void *timer_userp;
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struct timeval timer_lastcall; /* the fixed time for the timeout for the
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previous callback */
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};
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#endif /* HEADER_CURL_MULTIHANDLE_H */
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