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64 lines
1.3 KiB
C++
64 lines
1.3 KiB
C++
/*
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* (C) 2009 Jack Lloyd
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*
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* Distributed under the terms of the Botan license
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*/
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#include "timer.h"
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#include <botan/time.h>
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#include <iomanip>
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Timer::Timer(const std::string& n, u32bit e_mul) :
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name(n), event_mult(e_mul)
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{
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time_used = 0;
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timer_start = 0;
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event_count = 0;
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}
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void Timer::start()
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{
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stop();
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timer_start = get_clock();
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}
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void Timer::stop()
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{
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if(timer_start)
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{
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u64bit now = get_clock();
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if(now > timer_start)
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time_used += (now - timer_start);
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timer_start = 0;
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++event_count;
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}
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}
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u64bit Timer::get_clock()
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{
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return Botan::get_nanoseconds_clock();
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}
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std::ostream& operator<<(std::ostream& out, Timer& timer)
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{
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//out << timer.value() << " ";
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double events_per_second_fl =
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static_cast<double>(timer.events() / timer.seconds());
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u64bit events_per_second = static_cast<u64bit>(events_per_second_fl);
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out << events_per_second << " " << timer.get_name() << " per second; ";
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std::string op_or_ops = (timer.events() == 1) ? "op" : "ops";
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out << std::setprecision(2) << std::fixed
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<< timer.ms_per_event() << " ms/op"
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<< " (" << timer.events() << " " << op_or_ops << " in "
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<< timer.milliseconds() << " ms)";
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return out;
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}
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