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			132 lines
		
	
	
		
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			C++
		
	
	
	
	
	
			
		
		
	
	
			132 lines
		
	
	
		
			4.4 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/* Copyright (C) 2022 Mariadb Corporation.
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   This program is free software; you can redistribute it and/or
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   modify it under the terms of the GNU General Public License
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   as published by the Free Software Foundation; version 2 of
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   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 Street, Fifth Floor, Boston,
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   MA 02110-1301, USA. */
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#pragma once
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#include <iostream>
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#include <cstdint>
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#include <csignal>
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#include <sys/resource.h>
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#undef root_name
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#include <boost/filesystem.hpp>
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#include "calpontselectexecutionplan.h"
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#include "mcsanalyzetableexecutionplan.h"
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#include "activestatementcounter.h"
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#include "distributedenginecomm.h"
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#include "resourcemanager.h"
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#include "configcpp.h"
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#include "queryteleserverparms.h"
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#include "iosocket.h"
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#include "joblist.h"
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#include "joblistfactory.h"
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#include "oamcache.h"
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#include "simplecolumn.h"
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#include "bytestream.h"
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#include "telestats.h"
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#include "messageobj.h"
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#include "messagelog.h"
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#include "sqllogger.h"
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#include "femsghandler.h"
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#include "idberrorinfo.h"
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#include "MonitorProcMem.h"
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#include "liboamcpp.h"
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#include "crashtrace.h"
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#include "service.h"
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#include <mutex>
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#include <thread>
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#include <condition_variable>
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#include "dbrm.h"
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#include "mariadb_my_sys.h"
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#include "statistics.h"
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#include "serviceexemgr.h"
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namespace exemgr
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{
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  class SQLFrontSessionThread
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  {
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  public:
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    SQLFrontSessionThread(const messageqcpp::IOSocket& ios, joblist::DistributedEngineComm* ec,
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                  joblist::ResourceManager* rm)
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    : fIos(ios)
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    , fEc(ec)
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    , fRm(rm)
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    , fStatsRetrieved(false)
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    , fTeleClient(globServiceExeMgr->getTeleServerParms())
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    , fOamCachePtr(oam::OamCache::makeOamCache())
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    {
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    }
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  private:
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    messageqcpp::IOSocket fIos;
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    joblist::DistributedEngineComm* fEc;
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    joblist::ResourceManager* fRm;
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    querystats::QueryStats fStats;
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    // Variables used to store return stats
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    bool fStatsRetrieved;
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    querytele::QueryTeleClient fTeleClient;
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    oam::OamCache* fOamCachePtr;  // this ptr is copyable...
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    //...Reinitialize stats for start of a new query
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    void initStats(uint32_t sessionId, std::string& sqlText)
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    {
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      initMaxMemPct(sessionId);
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      fStats.reset();
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      fStats.setStartTime();
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      fStats.fSessionID = sessionId;
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      fStats.fQuery = sqlText;
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      fStatsRetrieved = false;
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    }
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    //...Get % memory usage during latest query for sesssionId.
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    //...SessionId >= 0x80000000 is system catalog query we can ignore.
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    static uint64_t getMaxMemPct(uint32_t sessionId);
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    //...Delete sessionMemMap entry for the specified session's memory % use.
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    //...SessionId >= 0x80000000 is system catalog query we can ignore.
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    static void deleteMaxMemPct(uint32_t sessionId);
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    //...Get and log query stats to specified output stream
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    const std::string formatQueryStats(
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        joblist::SJLP& jl,         // joblist associated with query
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        const std::string& label,  // header label to print in front of log output
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        bool includeNewLine,       // include line breaks in query stats std::string
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        bool vtableModeOn, bool wantExtendedStats, uint64_t rowsReturned);
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    static void incThreadCntPerSession(uint32_t sessionId);
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    static void decThreadCntPerSession(uint32_t sessionId);
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    //...Init sessionMemMap entry for specified session to 0 memory %.
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    //...SessionId >= 0x80000000 is system catalog query we can ignore.
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    static void initMaxMemPct(uint32_t sessionId);
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    //... Round off to human readable format (KB, MB, or GB).
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    const std::string roundBytes(uint64_t value) const;
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    void setRMParms(const execplan::CalpontSelectExecutionPlan::RMParmVec& parms);
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    void buildSysCache(const execplan::CalpontSelectExecutionPlan& csep,
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                      boost::shared_ptr<execplan::CalpontSystemCatalog> csc);
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    void writeCodeAndError(messageqcpp::ByteStream::quadbyte code, const std::string emsg);
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    void analyzeTableExecute(messageqcpp::ByteStream& bs, joblist::SJLP& jl, bool& stmtCounted);
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    void analyzeTableHandleStats(messageqcpp::ByteStream& bs);
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    uint64_t roundMB(uint64_t value) const;
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  public:
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    void operator()();
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  };
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}
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