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445e518bc7
commit f8f364b47f2784f16b401f27658f1c16eaf348ec
Author: Jay Edgar <jkedgar@fb.com>
Date: Tue Oct 17 15:19:31 2017 -0700
Add a hashed, hierarchical, wheel timer implementation
Summary:
In order to implement idle timeouts on detached sessions we need something inside MySQL that is lightweight and can handle calling events in the future with very little cost for cancelling or resetting the event. A hashed, hi
By default the timers are grouped into 10ms buckets (the 'hashed' part), though the size of the buckets is configurable at the creation of the timer. Each wheel (the 'wheel' part) maintains 256 buckets and cascades to the whe
Reviewed By: djwatson
Differential Revision: D6199806
fbshipit-source-id: 5e1590f
36 lines
1.4 KiB
C++
36 lines
1.4 KiB
C++
/*
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Copyright (c) 2012,2013 Monty Program 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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#pragma once
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namespace myrocks {
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/*
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Declare INFORMATION_SCHEMA (I_S) plugins needed by MyRocks storage engine.
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*/
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extern struct st_mysql_plugin rdb_i_s_cfstats;
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extern struct st_mysql_plugin rdb_i_s_dbstats;
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extern struct st_mysql_plugin rdb_i_s_perf_context;
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extern struct st_mysql_plugin rdb_i_s_perf_context_global;
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extern struct st_mysql_plugin rdb_i_s_cfoptions;
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extern struct st_mysql_plugin rdb_i_s_compact_stats;
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extern struct st_mysql_plugin rdb_i_s_global_info;
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extern struct st_mysql_plugin rdb_i_s_ddl;
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extern struct st_mysql_plugin rdb_i_s_index_file_map;
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extern struct st_mysql_plugin rdb_i_s_lock_info;
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extern struct st_mysql_plugin rdb_i_s_trx_info;
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extern struct st_mysql_plugin rdb_i_s_deadlock_info;
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} // namespace myrocks
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