diff options
Diffstat (limited to 'src/apps/speed/timer.cpp')
-rw-r--r-- | src/apps/speed/timer.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/apps/speed/timer.cpp b/src/apps/speed/timer.cpp new file mode 100644 index 000000000..9f3d34607 --- /dev/null +++ b/src/apps/speed/timer.cpp @@ -0,0 +1,64 @@ +/* +* (C) 2009 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#include "timer.h" +#include <chrono> +#include <iomanip> + +Timer::Timer(const std::string& n, u32bit e_mul) : + name(n), event_mult(e_mul) + { + time_used = 0; + timer_start = 0; + event_count = 0; + } + +void Timer::start() + { + stop(); + timer_start = get_clock(); + } + +void Timer::stop() + { + if(timer_start) + { + u64bit now = get_clock(); + + if(now > timer_start) + time_used += (now - timer_start); + + timer_start = 0; + ++event_count; + } + } + +u64bit Timer::get_clock() + { + auto now = std::chrono::high_resolution_clock::now().time_since_epoch(); + return std::chrono::duration_cast<std::chrono::nanoseconds>(now).count(); + } + +std::ostream& operator<<(std::ostream& out, Timer& timer) + { + //out << timer.value() << " "; + + double events_per_second_fl = + static_cast<double>(timer.events() / timer.seconds()); + + u64bit events_per_second = static_cast<u64bit>(events_per_second_fl); + + out << events_per_second << " " << timer.get_name() << " per second; "; + + std::string op_or_ops = (timer.events() == 1) ? "op" : "ops"; + + out << std::setprecision(2) << std::fixed + << timer.ms_per_event() << " ms/op" + << " (" << timer.events() << " " << op_or_ops << " in " + << timer.milliseconds() << " ms)"; + + return out; + } |