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sql_connect.h
/* Copyright (c) 2006, 2011, Oracle and/or its affiliates. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ #ifndef SQL_CONNECT_INCLUDED #define SQL_CONNECT_INCLUDED #include <my_sys.h> /* pthread_handler_t */ #include "mysql_com.h" /* enum_server_command */ #include "structs.h" #include <mysql/psi/mysql_socket.h> #include <hash.h> #include "violite.h" /* Object to hold connect information to be given to the newly created thread */ struct scheduler_functions; class CONNECT : public ilink { public: MYSQL_SOCKET sock; #ifdef _WIN32 HANDLE pipe; CONNECT(HANDLE pipe_arg): pipe(pipe_arg), vio_type(VIO_TYPE_NAMEDPIPE), scheduler(thread_scheduler), thread_id(0), prior_thr_create_utime(0) { count++; } #endif enum enum_vio_type vio_type; scheduler_functions *scheduler; my_thread_id thread_id; /* Own variables */ ulonglong prior_thr_create_utime; static Atomic_counter<uint32_t> count; CONNECT(MYSQL_SOCKET sock_arg, enum enum_vio_type vio_type_arg, scheduler_functions *scheduler_arg): sock(sock_arg), vio_type(vio_type_arg), scheduler(scheduler_arg), thread_id(0), prior_thr_create_utime(0) { count++; } ~CONNECT() { count--; DBUG_ASSERT(vio_type == VIO_CLOSED); } void close_and_delete(uint err); void close_with_error(uint sql_errno, const char *message, uint close_error); THD *create_thd(THD *thd); }; class THD; typedef struct user_conn USER_CONN; void init_max_user_conn(void); void init_global_user_stats(void); void init_global_table_stats(void); void init_global_index_stats(void); void init_global_client_stats(void); void free_max_user_conn(void); void free_global_user_stats(void); void free_global_table_stats(void); void free_global_index_stats(void); void free_global_client_stats(void); pthread_handler_t handle_one_connection(void *arg); void do_handle_one_connection(CONNECT *connect, bool put_in_cache); bool init_new_connection_handler_thread(); void reset_mqh(LEX_USER *lu, bool get_them); bool check_mqh(THD *thd, uint check_command); void time_out_user_resource_limits(THD *thd, USER_CONN *uc); #ifndef NO_EMBEDDED_ACCESS_CHECKS void decrease_user_connections(USER_CONN *uc); #else #define decrease_user_connections(X) do { } while(0) /* nothing */ #endif bool thd_init_client_charset(THD *thd, uint cs_number); void setup_connection_thread_globals(THD *thd); bool thd_prepare_connection(THD *thd); bool thd_is_connection_alive(THD *thd); int thd_set_peer_addr(THD *thd, sockaddr_storage *addr, const char *ip, uint port, bool check_proxy_networks, uint *host_errors); bool login_connection(THD *thd); void prepare_new_connection_state(THD* thd); void end_connection(THD *thd); void update_global_user_stats(THD* thd, bool create_user, time_t now); int get_or_create_user_conn(THD *thd, const char *user, const char *host, const USER_RESOURCES *mqh); int check_for_max_user_connections(THD *thd, USER_CONN *uc); extern HASH global_user_stats; extern HASH global_client_stats; extern HASH global_table_stats; extern HASH global_index_stats; extern mysql_mutex_t LOCK_global_user_client_stats; extern mysql_mutex_t LOCK_global_table_stats; extern mysql_mutex_t LOCK_global_index_stats; extern mysql_mutex_t LOCK_stats; #endif /* SQL_CONNECT_INCLUDED */
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