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4c83c570ed
Fixed compiler error when configuring without --lib-event include/mysql_version.h.in: Added mariadb-'version' as a my.cnf option tag for mysqld sql/mysqld.cc: Added mariadb and mariadb-version as my.conf option tags
92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
/* Copyright (C) 2007 MySQL AB
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/*
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Classes for the thread scheduler
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*/
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#ifdef USE_PRAGMA_INTERFACE
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#pragma interface
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#endif
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class THD;
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/* Functions used when manipulating threads */
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class scheduler_functions
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{
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public:
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uint max_threads, *connection_count;
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ulong *max_connections;
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bool (*init)(void);
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bool (*init_new_connection_thread)(void);
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void (*add_connection)(THD *thd);
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void (*post_kill_notification)(THD *thd);
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bool (*end_thread)(THD *thd, bool cache_thread);
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void (*end)(void);
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scheduler_functions();
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};
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enum scheduler_types
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{
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SCHEDULER_ONE_THREAD_PER_CONNECTION=0,
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SCHEDULER_NO_THREADS,
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SCHEDULER_POOL_OF_THREADS
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};
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void one_thread_per_connection_scheduler(scheduler_functions *func,
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ulong *arg_max_connections,
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uint *arg_connection_count);
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void one_thread_scheduler(scheduler_functions* func);
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#if defined(HAVE_LIBEVENT) && !defined(EMBEDDED_LIBRARY)
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#define HAVE_POOL_OF_THREADS 1
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struct event;
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class thd_scheduler
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{
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public:
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bool logged_in;
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struct event* io_event;
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LIST list;
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bool thread_attached; /* Indicates if THD is attached to the OS thread */
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#ifndef DBUG_OFF
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char dbug_explain[256];
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bool set_explain;
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#endif
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thd_scheduler();
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~thd_scheduler();
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bool init(THD* parent_thd);
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bool thread_attach();
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void thread_detach();
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};
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void pool_of_threads_scheduler(scheduler_functions* func);
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#else
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#define HAVE_POOL_OF_THREADS 0 /* For easyer tests */
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#define pool_of_threads_scheduler(A) \
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one_thread_per_connection_scheduler(A, &max_connections, \
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&connection_count)
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class thd_scheduler
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{};
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#endif
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