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104 lines
3 KiB
C
104 lines
3 KiB
C
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/* Copyright (c) 2010, 2011, 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 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 St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef PFS_CON_SLICE_H
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#define PFS_CON_SLICE_H
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/**
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@file storage/perfschema/pfs_con_slice.h
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Performance schema connection slice (declarations).
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*/
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#include "pfs_lock.h"
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#include "lf.h"
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struct PFS_single_stat;
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struct PFS_stage_stat;
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struct PFS_statement_stat;
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/**
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@addtogroup Performance_schema_buffers
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@{
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*/
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/**
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A connection slice, an arbitrary grouping of several connections.
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This structure holds statistics for grouping of connections.
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*/
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struct PFS_connection_slice
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{
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/**
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Allocate memory for waits statistics.
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@param sizing the number of wait classes.
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@return wait statistics for this slice.
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*/
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static PFS_single_stat *alloc_waits_slice(uint sizing);
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/**
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Allocate memory for stages statistics.
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@param sizing the number of stage classes.
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@return stage statistics for this slice.
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*/
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static PFS_stage_stat *alloc_stages_slice(uint sizing);
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/**
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Allocate memory for statement statistics.
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@param sizing the number of statement classes.
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@return statement statistics for this slice.
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*/
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static PFS_statement_stat *alloc_statements_slice(uint sizing);
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/** Reset all statistics. */
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inline void reset_stats()
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{
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reset_waits_stats();
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reset_stages_stats();
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reset_statements_stats();
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}
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/** Reset all wait statistics. */
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void reset_waits_stats();
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/** Reset all stages statistics. */
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void reset_stages_stats();
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/** Reset all statements statistics. */
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void reset_statements_stats();
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/**
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Per connection slice waits aggregated statistics.
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This member holds the data for the table
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PERFORMANCE_SCHEMA.EVENTS_WAITS_SUMMARY_BY_*_BY_EVENT_NAME.
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Immutable, safe to use without internal lock.
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*/
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PFS_single_stat *m_instr_class_waits_stats;
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/**
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Per connection slice stages aggregated statistics.
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This member holds the data for the table
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PERFORMANCE_SCHEMA.EVENTS_STAGES_SUMMARY_BY_*_BY_EVENT_NAME.
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Immutable, safe to use without internal lock.
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*/
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PFS_stage_stat *m_instr_class_stages_stats;
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/**
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Per connection slice statements aggregated statistics.
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This member holds the data for the table
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PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_SUMMARY_BY_*_BY_EVENT_NAME.
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Immutable, safe to use without internal lock.
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*/
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PFS_statement_stat *m_instr_class_statements_stats;
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};
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/** @} */
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#endif
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