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00020 #ifndef _pool_h_
00021 #define _pool_h_
00022 
00023 #if HAVE_SYS_TYPES_H
00024 #include <sys/types.h>
00025 #endif
00026 
00027 #if HAVE_NETINET_IN_H
00028 #include <netinet/in.h>
00029 #endif
00030 
00031 
00032 
00033 
00034 #if HAVE_SYS_TIME_H
00035 #include <sys/time.h>
00036 #endif
00037 
00038 #include "tds.h"
00039 
00040 TDS_RCSID(pool_h, "$Id: pool.h,v 1.15 2006/06/12 19:45:59 freddy77 Exp $");
00041 
00042 
00043 #define PGSIZ 2048
00044 #define BLOCKSIZ 512
00045 #define MAX_POOL_USERS 1024
00046 
00047 
00048 typedef enum
00049 {
00050         TDS_SRV_LOGIN,
00051         TDS_SRV_IDLE,
00052         TDS_SRV_QUERY,
00053         TDS_SRV_WAIT,           
00054         TDS_SRV_CANCEL,
00055         TDS_SRV_DEAD
00056 } TDS_USER_STATE;
00057 
00058 
00059 typedef struct tds_pool_member TDS_POOL_MEMBER;
00060 
00061 
00062 typedef struct tds_pool_user
00063 {
00064         TDSSOCKET *tds;
00065         TDS_USER_STATE user_state;
00066         TDS_POOL_MEMBER *assigned_member;
00067 }
00068 TDS_POOL_USER;
00069 
00070 struct tds_pool_member
00071 {
00072         TDSSOCKET *tds;
00073         
00074         int need_more;
00075         int state;
00076         time_t last_used_tm;
00077         TDS_POOL_USER *current_user;
00078         
00079 
00080 
00081 
00082         int num_bytes_left;
00083         unsigned char fragment[PGSIZ];
00084 };
00085 
00086 typedef struct tds_pool
00087 {
00088         char *name;
00089         char *user;
00090         char *password;
00091         char *server;
00092         char *database;
00093         int port;
00094         int max_member_age;     
00095         int min_open_conn;
00096         int max_open_conn;
00097         int num_members;
00098         TDS_POOL_MEMBER *members;
00099         int max_users;
00100         TDS_POOL_USER *users;
00101 }
00102 TDS_POOL;
00103 
00104 
00105 
00106 
00107 int pool_process_members(TDS_POOL * pool, fd_set * fds);
00108 TDS_POOL_MEMBER *pool_find_idle_member(TDS_POOL * pool);
00109 void pool_mbr_init(TDS_POOL * pool);
00110 void pool_free_member(TDS_POOL_MEMBER * pmbr);
00111 void pool_assign_member(TDS_POOL_MEMBER * pmbr, TDS_POOL_USER *puser);
00112 void pool_deassign_member(TDS_POOL_MEMBER * pmbr);
00113 void pool_reset_member(TDS_POOL_MEMBER * pmbr);
00114 
00115 
00116 int pool_process_users(TDS_POOL * pool, fd_set * fds);
00117 void pool_user_init(TDS_POOL * pool);
00118 TDS_POOL_USER *pool_user_create(TDS_POOL * pool, TDS_SYS_SOCKET s, struct sockaddr_in *sin);
00119 void pool_free_user(TDS_POOL_USER * puser);
00120 void pool_user_query(TDS_POOL * pool, TDS_POOL_USER * puser);
00121 
00122 
00123 void dump_buf(const void *buf, int length);
00124 void dump_login(TDSLOGIN * login);
00125 void die_if(int expr, const char *msg);
00126 
00127 
00128 int pool_read_conf_file(char *poolname, TDS_POOL * pool);
00129 
00130 
00131 #endif