99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
/*
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Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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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*/
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#ifndef HA_NDB_INDEX_STAT_H
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#define HA_NDB_INDEX_STAT_H
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#include <mysql/psi/mysql_thread.h>
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#include "storage/ndb/plugin/ndb_component.h"
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struct NDB_SHARE;
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class Ndb_cluster_connection;
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struct SHOW_VAR;
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struct SYS_VAR;
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class Ndb_index_stat_thread : public Ndb_component {
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// Someone is waiting for stats
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bool client_waiting;
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mysql_mutex_t LOCK_client_waiting;
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mysql_cond_t COND_client_waiting;
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public:
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Ndb_index_stat_thread();
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virtual ~Ndb_index_stat_thread();
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/*
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protect stats entry lists where needed
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protect and signal changes in stats entries
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*/
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mysql_mutex_t stat_mutex;
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mysql_cond_t stat_cond;
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// Wake thread up to fetch stats or do other stuff
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void wakeup();
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/* are we setup */
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bool is_setup_complete();
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private:
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virtual int do_init();
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virtual void do_run();
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virtual int do_deinit();
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// Wakeup for stop
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virtual void do_wakeup();
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int check_or_create_systables(struct Ndb_index_stat_proc &pr);
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int check_or_create_sysevents(struct Ndb_index_stat_proc &pr);
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void drop_ndb(struct Ndb_index_stat_proc &pr);
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int start_listener(struct Ndb_index_stat_proc &pr);
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int create_ndb(struct Ndb_index_stat_proc &pr,
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Ndb_cluster_connection *connection);
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void stop_listener(struct Ndb_index_stat_proc &pr);
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};
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/* free entries from share or at end */
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void ndb_index_stat_free(NDB_SHARE *, int iudex_id, int index_version);
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void ndb_index_stat_free(NDB_SHARE *);
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void ndb_index_stat_end();
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/**
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show_ndb_status_index_stat
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Called as part of SHOW STATUS or performance_schema
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queries. Returns info about ndb index stat related status variables.
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*/
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int show_ndb_status_index_stat(THD *thd, SHOW_VAR *var, char *buff);
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// Check and update functions for --ndb-index-stat-option=
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int ndb_index_stat_option_check(THD *, SYS_VAR *, void *save,
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struct st_mysql_value *value);
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void ndb_index_stat_option_update(THD *, SYS_VAR *, void *var_ptr,
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const void *save);
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// Storage for --ndb-index-stat-option=
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extern char ndb_index_stat_option_buf[];
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#endif
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