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b1dcf448ea
In order to allow thread schedulers to be dynamically loaded, it is necessary to make the following changes to the server: - Two new service interfaces - Modifications to InnoDB to inform the thread scheduler of state changes. - Changes to the VIO subsystem for checking if data is available on a socket. - Elimination of remains of the old thread pool implementation. The two new service interfaces introduces are: my_thread_scheduler A service interface to register a thread scheduler. thd_wait A service interface to inform thread scheduler that the thread is about to start waiting. In addition, the patch adds code that: - Add a call to thd_wait for table locks in mysys thd_lock.c by introducing a set function that can be used to set a callback to be used when waiting on a lock and resuming from waiting. - Calling the mysys set function from the server to set the callbacks correctly.
47 lines
1.8 KiB
C++
47 lines
1.8 KiB
C++
/* Copyright 2006-2008 MySQL AB, 2008-2009 Sun Microsystems, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef SQL_CONNECT_INCLUDED
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#define SQL_CONNECT_INCLUDED
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#include "my_sys.h" /* pthread_handler_t */
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#include "mysql_com.h" /* enum_server_command */
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class THD;
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typedef struct st_lex_user LEX_USER;
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typedef struct user_conn USER_CONN;
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void init_max_user_conn(void);
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void free_max_user_conn(void);
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pthread_handler_t handle_one_connection(void *arg);
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void do_handle_one_connection(THD *thd_arg);
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bool init_new_connection_handler_thread();
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void reset_mqh(LEX_USER *lu, bool get_them);
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bool check_mqh(THD *thd, uint check_command);
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void time_out_user_resource_limits(THD *thd, USER_CONN *uc);
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void decrease_user_connections(USER_CONN *uc);
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void thd_init_client_charset(THD *thd, uint cs_number);
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bool setup_connection_thread_globals(THD *thd);
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int check_user(THD *thd, enum enum_server_command command,
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const char *passwd, uint passwd_len, const char *db,
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bool check_count);
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bool login_connection(THD *thd);
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void prepare_new_connection_state(THD* thd);
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void end_connection(THD *thd);
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#endif /* SQL_CONNECT_INCLUDED */
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