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7ab909ee47
- License was intended to be GPLv3 per earlier commit of GPLv3 LICENSE FILE - This is confirmed by the inclusion of libraries that are incompatible with GPLv2 - This is also confirmed by KLS and the agreement of KLS's predecessors - Added GPLv3 license headers to the compilable source files - Removed Folly licensing in strings.h since the string functions do not match the Folly functions and are standard functions - this must have been left over from previous implementations - Removed individual contributor license headers since the project has been under the "developer" mantle for many years - Removed comments on files that were previously automatically generated since they've been manually modified multiple times and there are no automatic scripts referencing them (removed in 2023)
83 lines
2.0 KiB
C++
83 lines
2.0 KiB
C++
/* EQEmu: EQEmulator
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Copyright (C) 2001-2026 EQEmu Development Team
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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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, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "common/types.h"
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#define CALIBRATE_LOOPS 3
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#define SLEEP_TIME 10 //in ms
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/*
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This class implementes the highest possibly prescision timer
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which is avaliable on the current archetecture.
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On intel, this uses the rdtsc instruction to get the actual
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clock cycle count, and elsewhere it falls back to gettimeofday
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All calculations are carried out in 64 bit integers.
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*/
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class RDTSC_Timer {
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public:
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RDTSC_Timer();
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RDTSC_Timer(bool start_it);
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void start(); //start the timer
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virtual void stop(); //stop the timer
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double getDuration(); //returns the number of miliseconds elapsed
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//access functions
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int64 getTicks() { return(_end - _start); }
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static int64 ticksPerMS() { return(_ticsperms); }
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protected:
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static int64 rdtsc();
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int64 _start;
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int64 _end;
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protected:
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static void init();
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static bool _inited;
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static int64 _ticsperms;
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};
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//this is a timer which can be started and stoped many times.
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//each time it contributes its counter to a sum, whic is used
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//to find net duration.
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class RDTSC_Collector : public RDTSC_Timer {
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public:
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RDTSC_Collector();
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RDTSC_Collector(bool start_it);
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void reset();
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void stop(); //stop the timer
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double getTotalDuration(); //returns the number of miliseconds elapsed
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double getAverage();
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int64 getTotalTicks() { return(_sum); }
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int64 getCount() { return(_count); }
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protected:
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int64 _sum;
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int64 _count;
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};
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