forked from 0ad/0ad
janwas
cba876b246
aken: clean up debug strings mahaf: use checked/free version of aken depending on config. refactor to eliminate goto. hpet: avoid undefined unmap if HPET not found whrt/*: make sure all counter class data is initialized whrt: prefer QPC over PMT (it's much faster?!) winit: add some instrumentation wutil: win_exe_dir and win_sys_dir shouldn't end in slash. fixed. This was SVN commit r5116.
45 lines
1.0 KiB
C++
45 lines
1.0 KiB
C++
/**
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* =========================================================================
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* File : tsc.h
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* Project : 0 A.D.
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* Description : Timer implementation using RDTSC
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* =========================================================================
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*/
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// license: GPL; see lib/license.txt
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#ifndef INCLUDED_TSC
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#define INCLUDED_TSC
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#include "counter.h"
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class CounterTSC : public ICounter
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{
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public:
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virtual const char* Name() const
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{
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return "TSC";
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}
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virtual LibError Activate();
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virtual void Shutdown();
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virtual bool IsSafe() const;
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virtual u64 Counter() const;
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/**
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* WHRT uses this to ensure the counter (running at nominal frequency)
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* doesn't overflow more than once during CALIBRATION_INTERVAL_MS.
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**/
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virtual uint CounterBits() const;
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/**
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* initial measurement of the tick rate. not necessarily correct
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* (e.g. when using TSC: cpu_ClockFrequency isn't exact).
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**/
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virtual double NominalFrequency() const;
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};
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#endif // #ifndef INCLUDED_TSC
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