1/* Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.
2
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; version 2 of the License.
6
7 This program is distributed in the hope that it will be useful,
8 but WITHOUT ANY WARRANTY; without even the implied warranty of
9 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 GNU General Public License for more details.
11
12 You should have received a copy of the GNU General Public License
13 along with this program; if not, write to the Free Software
14 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
15
16#ifndef TABLE_EWS_BY_HOST_BY_EVENT_NAME_H
17#define TABLE_EWS_BY_HOST_BY_EVENT_NAME_H
18
19/**
20 @file storage/perfschema/table_ews_by_host_by_event_name.h
21 Table EVENTS_WAITS_SUMMARY_BY_HOST_BY_EVENT_NAME (declarations).
22*/
23
24#include "pfs_column_types.h"
25#include "pfs_engine_table.h"
26#include "pfs_instr_class.h"
27#include "pfs_instr.h"
28#include "pfs_host.h"
29#include "table_helper.h"
30
31/**
32 @addtogroup Performance_schema_tables
33 @{
34*/
35
36/**
37 A row of table
38 PERFORMANCE_SCHEMA.EVENTS_WAITS_SUMMARY_BY_HOST_BY_EVENT_NAME.
39*/
40struct row_ews_by_host_by_event_name
41{
42 /** Column HOST. */
43 PFS_host_row m_host;
44 /** Column EVENT_NAME. */
45 PFS_event_name_row m_event_name;
46 /** Columns COUNT_STAR, SUM/MIN/AVG/MAX TIMER_WAIT. */
47 PFS_stat_row m_stat;
48};
49
50/**
51 Position of a cursor on
52 PERFORMANCE_SCHEMA.EVENTS_WAITS_SUMMARY_BY_HOST_BY_EVENT_NAME.
53 Index 1 on host (0 based)
54 Index 2 on instrument view
55 Index 3 on instrument class (1 based)
56*/
57struct pos_ews_by_host_by_event_name
58: public PFS_triple_index, public PFS_instrument_view_constants
59{
60 pos_ews_by_host_by_event_name()
61 : PFS_triple_index(0, FIRST_VIEW, 1)
62 {}
63
64 inline void reset(void)
65 {
66 m_index_1= 0;
67 m_index_2= FIRST_VIEW;
68 m_index_3= 1;
69 }
70
71 inline bool has_more_host(void)
72 { return (m_index_1 < host_max); }
73
74 inline void next_host(void)
75 {
76 m_index_1++;
77 m_index_2= FIRST_VIEW;
78 m_index_3= 1;
79 }
80
81 inline bool has_more_view(void)
82 { return (m_index_2 <= LAST_VIEW); }
83
84 inline void next_view(void)
85 {
86 m_index_2++;
87 m_index_3= 1;
88 }
89};
90
91/** Table PERFORMANCE_SCHEMA.EVENTS_WAITS_SUMMARY_BY_HOST_BY_EVENT_NAME. */
92class table_ews_by_host_by_event_name : public PFS_engine_table
93{
94public:
95 /** Table share */
96 static PFS_engine_table_share m_share;
97 static PFS_engine_table* create();
98 static int delete_all_rows();
99
100 virtual int rnd_next();
101 virtual int rnd_pos(const void *pos);
102 virtual void reset_position(void);
103
104protected:
105 virtual int read_row_values(TABLE *table,
106 unsigned char *buf,
107 Field **fields,
108 bool read_all);
109
110 table_ews_by_host_by_event_name();
111
112public:
113 ~table_ews_by_host_by_event_name()
114 {}
115
116protected:
117 void make_row(PFS_host *host, PFS_instr_class *klass);
118
119private:
120 /** Table share lock. */
121 static THR_LOCK m_table_lock;
122
123 /** Current row. */
124 row_ews_by_host_by_event_name m_row;
125 /** True is the current row exists. */
126 bool m_row_exists;
127 /** Current position. */
128 pos_ews_by_host_by_event_name m_pos;
129 /** Next position. */
130 pos_ews_by_host_by_event_name m_next_pos;
131};
132
133/** @} */
134#endif
135