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60 lines
1.6 KiB
C++
60 lines
1.6 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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;
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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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void one_thread_scheduler(scheduler_functions* func);
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enum pool_command_op
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{
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NOT_IN_USE_OP= 0, NORMAL_OP= 1, CONNECT_OP, KILL_OP, DIE_OP
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};
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#define HAVE_POOL_OF_THREADS 0 /* For easyer tests */
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#define pool_of_threads_scheduler(A) one_thread_per_connection_scheduler(A)
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class thd_scheduler
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{};
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