149 lines
3.3 KiB
C++
149 lines
3.3 KiB
C++
/*
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* This file is a part of Winix
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* and is distributed under the 2-Clause BSD licence.
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* Author: Tomasz Sowa <t.sowa@ttmath.org>
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*/
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/*
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* Copyright (c) 2008-2018, Tomasz Sowa
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef headerfile_winix_core_loadavg
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#define headerfile_winix_core_loadavg
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#include <ctime>
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#include "winixbase.h"
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#include "request.h"
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namespace Winix
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{
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// in seconds
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#define WINIX_LOADAVG_GRANULARITY1 2
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#define WINIX_LOADAVG_GRANULARITY5 15
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#define WINIX_LOADAVG_GRANULARITY15 45
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class LoadAvg : public WinixBase
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{
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public:
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LoadAvg();
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~LoadAvg();
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LoadAvg & operator=(const LoadAvg & l);
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LoadAvg(const LoadAvg & l);
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void StartRequest(Request * req);
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void StopRequest(Request * req);
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double LoadAvgNow(); // load average withing last WINIX_LOADAVG_GRANULARITY1 seconds
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double LoadAvg1();
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double LoadAvg5();
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double LoadAvg15();
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double ReqPerSecNow();
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double ReqPerSec1();
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double ReqPerSec5();
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double ReqPerSec15();
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private:
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struct Times
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{
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double dr; // time for the request (in seconds)
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double dp; // time for the pause between requestes(in seconds)
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long req; // how many requests
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void Clear()
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{
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dr = 0.0;
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dp = 0.0;
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req = 0;
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}
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Times & operator=(const Times & t)
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{
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dr = t.dr;
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dp = t.dp;
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req = t.req;
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return *this;
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}
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};
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timespec timespec_old_req_stop;
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void CheckTimers();
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void UpdateTimer1();
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void UpdateTimer5();
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void UpdateTimer15();
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Times current1;
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Times current5;
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Times current15;
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void CreateTable(size_t seconds, size_t granulatiry, Times* & tab, size_t & len);
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void CreateTable();
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void MoveTab(Times * tab, size_t len);
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void SumTab(Times * tab, size_t len, double expected, Times & t);
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void Calculate1();
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void Calculate5();
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void Calculate15();
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Times * tab1;
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size_t len1;
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Times * tab5;
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size_t len5;
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Times * tab15;
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size_t len15;
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double cache_load1;
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double cache_load5;
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double cache_load15;
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double cache_req_per_sec1;
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double cache_req_per_sec5;
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double cache_req_per_sec15;
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};
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} // namespace Winix
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#endif
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