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/* Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
#ifndef PFS_CON_SLICE_H
#define PFS_CON_SLICE_H
/**
@file storage/perfschema/pfs_con_slice.h
Performance schema connection slice (declarations).
*/
#include "pfs_lock.h"
#include "lf.h"
struct PFS_single_stat;
struct PFS_stage_stat;
struct PFS_statement_stat;
/**
@addtogroup Performance_schema_buffers
@{
*/
/**
A connection slice, an arbitrary grouping of several connections.
This structure holds statistics for grouping of connections.
*/
struct PFS_connection_slice
{
/**
Allocate memory for waits statistics.
@param sizing the number of wait classes.
@return wait statistics for this slice.
*/
static PFS_single_stat *alloc_waits_slice(uint sizing);
/**
Allocate memory for stages statistics.
@param sizing the number of stage classes.
@return stage statistics for this slice.
*/
static PFS_stage_stat *alloc_stages_slice(uint sizing);
/**
Allocate memory for statement statistics.
@param sizing the number of statement classes.
@return statement statistics for this slice.
*/
static PFS_statement_stat *alloc_statements_slice(uint sizing);
/** Reset all statistics. */
inline void reset_stats()
{
reset_waits_stats();
reset_stages_stats();
reset_statements_stats();
}
/** Reset all wait statistics. */
void reset_waits_stats();
/** Reset all stages statistics. */
void reset_stages_stats();
/** Reset all statements statistics. */
void reset_statements_stats();
/**
Per connection slice waits aggregated statistics.
This member holds the data for the table
PERFORMANCE_SCHEMA.EVENTS_WAITS_SUMMARY_BY_*_BY_EVENT_NAME.
Immutable, safe to use without internal lock.
*/
PFS_single_stat *m_instr_class_waits_stats;
/**
Per connection slice stages aggregated statistics.
This member holds the data for the table
PERFORMANCE_SCHEMA.EVENTS_STAGES_SUMMARY_BY_*_BY_EVENT_NAME.
Immutable, safe to use without internal lock.
*/
PFS_stage_stat *m_instr_class_stages_stats;
/**
Per connection slice statements aggregated statistics.
This member holds the data for the table
PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_SUMMARY_BY_*_BY_EVENT_NAME.
Immutable, safe to use without internal lock.
*/
PFS_statement_stat *m_instr_class_statements_stats;
};
/** @} */
#endif
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