1 /* Copyright (C) MariaDB Corporation Ab
2 
3   This program is free software; you can redistribute it and/or modify
4   it under the terms of the GNU General Public License as published by
5   the Free Software Foundation; version 2 of the License.
6 
7   This program is distributed in the hope that it will be useful,
8   but WITHOUT ANY WARRANTY; without even the implied warranty of
9   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10   GNU General Public License for more details.
11 
12   You should have received a copy of the GNU General Public License
13   along with this program; if not, write to the Free Software
14 	Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
15 
16 /** @file user_connect.h
17 
18     @brief
19   Declaration of the user_connect class.
20 
21     @note
22 	Author Olivier Bertrand
23 
24     @see
25   /sql/handler.h and /storage/connect/user_connect.cc
26 */
27 
28 #ifdef USE_PRAGMA_INTERFACE
29 #pragma interface     /* gcc class implementation */
30 #endif
31 
32 /*****************************************************************************/
33 /*  This is the global structure having all CONNECT information.             */
34 /*****************************************************************************/
35 //typedef struct _global *PGLOBAL;
36 typedef class user_connect *PCONNECT;
37 typedef class ha_connect *PHC;
38 static int connect_done_func(void *);
39 
40 /*****************************************************************************/
41 /*  The CONNECT users. There should be one by connected users.               */
42 /*****************************************************************************/
43 class user_connect
44 {
45   friend class ha_connect;
46   friend int connect_done_func(void *);
47 public:
48   // Constructor
49   user_connect(THD *thd);
50 
51   // Destructor
52   virtual ~user_connect();
53 
54   // Implementation
55   bool user_init();
56   void SetHandler(ha_connect *hc);
57   bool CheckCleanup(bool force = false);
CheckQueryID(void)58   bool CheckQueryID(void) {return thdp->query_id > last_query_id;}
CheckQuery(query_id_t vid)59   bool CheckQuery(query_id_t vid) {return last_query_id > vid;}
60 
61   // Members
62   THD         *thdp;                    // To the user thread
63   static PCONNECT  to_users;            // To the chain of users
64   PCONNECT     next;                    // Next user in chain
65   PCONNECT     previous;                // Previous user in chain
66   PGLOBAL      g;                       // The common handle to CONNECT
67   query_id_t   last_query_id;           // the latest user query id
68   int          count;                   // if used by several handlers
69   // Statistics
70   ulong        nrd, fnd, nfd;
71   ulonglong    tb1;
72 }; // end of user_connect class definition
73 
74