1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/*
* Copyright (C) 2010 Joseph Daly <skinny.moey@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Joseph Daly nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <config.h>
#include <drizzled/statistics_variables.h>
#include "cumulative_stats.h"
using namespace std;
using namespace drizzled;
CumulativeStats::CumulativeStats(uint32_t in_cumulative_stats_by_user_max)
:
cumulative_stats_by_user_max(in_cumulative_stats_by_user_max)
{
cumulative_stats_by_user_vector= new vector<ScoreboardSlot *>(cumulative_stats_by_user_max);
vector<ScoreboardSlot *>::iterator it= cumulative_stats_by_user_vector->begin();
for (int32_t j=0; j < cumulative_stats_by_user_max; ++j)
{
ScoreboardSlot *scoreboard_slot= new ScoreboardSlot();
it= cumulative_stats_by_user_vector->insert(it, scoreboard_slot);
}
cumulative_stats_by_user_vector->resize(cumulative_stats_by_user_max);
last_valid_index= INVALID_INDEX;
isOpenUserSlots= true;
global_stats= new GlobalStats();
global_status_vars= new StatusVars();
/* calculate the approximate memory allocation for the cumulative statistics */
size_t statusVarsSize= sizeof(StatusVars) + sizeof(system_status_var);
size_t userCommandsSize= sizeof(UserCommands) + sizeof(uint64_t) * SQLCOM_END;
cumulative_size_bytes= (statusVarsSize + userCommandsSize) * cumulative_stats_by_user_max;
}
CumulativeStats::~CumulativeStats()
{
vector<ScoreboardSlot *>::iterator it= cumulative_stats_by_user_vector->begin();
for (; it < cumulative_stats_by_user_vector->end(); ++it)
{
delete *it;
}
cumulative_stats_by_user_vector->clear();
delete cumulative_stats_by_user_vector;
delete global_stats;
delete global_status_vars;
}
void CumulativeStats::logUserStats(ScoreboardSlot *scoreboard_slot, bool reserveSlot)
{
vector<ScoreboardSlot *>::iterator cumulative_it= cumulative_stats_by_user_vector->begin();
/* Search if this is a pre-existing user */
int32_t current_index= last_valid_index;
if (cumulative_stats_by_user_max <= current_index)
{
current_index= cumulative_stats_by_user_max;
}
for (int32_t j=0; j <= current_index; ++j)
{
ScoreboardSlot *cumulative_scoreboard_slot= *cumulative_it;
string user= cumulative_scoreboard_slot->getUser();
if (user.compare(scoreboard_slot->getUser()) == 0)
{
reserveSlot= false;
cumulative_scoreboard_slot->merge(scoreboard_slot);
break;
}
++cumulative_it;
}
if (reserveSlot)
{
/* the user was not found */
/* its possible multiple simultaneous connections with the same user
could result in duplicate entries here, not likely and it would
be harmless except for duplicate users showing up in a query */
if (hasOpenUserSlots())
{
int32_t our_index= last_valid_index.add_and_fetch(1);
if (our_index < cumulative_stats_by_user_max)
{
ScoreboardSlot *cumulative_scoreboard_slot=
cumulative_stats_by_user_vector->at(our_index);
cumulative_scoreboard_slot->setUser(scoreboard_slot->getUser());
cumulative_scoreboard_slot->merge(scoreboard_slot);
cumulative_scoreboard_slot->setInUse(true);
}
else
{
last_valid_index= cumulative_stats_by_user_max - 1;
isOpenUserSlots= false;
}
}
}
}
void CumulativeStats::logGlobalStats(ScoreboardSlot* scoreboard_slot)
{
global_stats->updateUserCommands(scoreboard_slot);
}
void CumulativeStats::logGlobalStatusVars(ScoreboardSlot* scoreboard_slot)
{
global_status_vars->merge(scoreboard_slot->getStatusVars());
}
int32_t CumulativeStats::getCumulativeStatsLastValidIndex()
{
if (last_valid_index < cumulative_stats_by_user_max)
{
return last_valid_index;
}
else
{
return cumulative_stats_by_user_max;
}
}
void CumulativeStats::sumCurrentScoreboard(Scoreboard *scoreboard,
StatusVars *current_status_vars,
UserCommands *current_user_commands)
{
/* the vector of vectors */
vector<vector<ScoreboardSlot* >* > *vector_of_scoreboard_vectors=
scoreboard->getVectorOfScoreboardVectors();
/* iterate through each vector from above and sum each ScoreboardSlot */
vector<vector<ScoreboardSlot* >* >::iterator v_of_scoreboard_v_begin_it= vector_of_scoreboard_vectors->begin();
vector<vector<ScoreboardSlot* >* >::iterator v_of_scoreboard_v_end_it= vector_of_scoreboard_vectors->end();
for (; v_of_scoreboard_v_begin_it != v_of_scoreboard_v_end_it; ++v_of_scoreboard_v_begin_it)
{
vector<ScoreboardSlot* > *scoreboard_vector= *v_of_scoreboard_v_begin_it;
vector<ScoreboardSlot* >::iterator scoreboard_vector_it= scoreboard_vector->begin();
vector<ScoreboardSlot* >::iterator scoreboard_vector_end= scoreboard_vector->end();
for (; scoreboard_vector_it != scoreboard_vector_end; ++scoreboard_vector_it)
{
ScoreboardSlot *scoreboard_slot= *scoreboard_vector_it;
if (scoreboard_slot->isInUse())
{
if (current_status_vars)
{
current_status_vars->merge(scoreboard_slot->getStatusVars());
}
if (current_user_commands)
{
current_user_commands->merge(scoreboard_slot->getUserCommands());
}
}
}
}
}
|