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/*
* 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() const
{
return last_valid_index < cumulative_stats_by_user_max ? last_valid_index : 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());
}
}
}
}
}
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