Be concise.
Be useful.
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Please try to avoid dependencies to third-party libraries and frameworks.
(time (f))#include <chrono>
double measure() {
using namespace std::chrono;
const auto start{ high_resolution_clock::now() };
f();
const auto elapsed{ high_resolution_clock::now() - start };
const double seconds{ duration_cast<duration<double>>(elapsed).count() };
return seconds;
}
Be aware that high_resolution_clock may go back in time.
Caveat: the timing calls may be reordered. See https://stackoverflow.com/questions/37786547/enforcing-statement-order-in-c
Caveat: the timing calls may be reordered. See https://stackoverflow.com/questions/37786547/enforcing-statement-order-in-c
{
import std.stdio;
auto mt = measureTime!((TickDuration a{writeln(a.msecs);});
f();
}The level 0 braces are used to create a scope.
auto timer = StopWatch(AutoStart.yes);
f();
timer.stop();
writeln("Time taken: ", timer.peek.total!"msecs"());The standard procedural way
auto elapsed = benchmark!f(1)[0].msecs;benchmark measures n executions of the function
var s = Stopwatch()..start();
f();
s.stop();
print(s.elapsed);integer, parameter :: i8 = selected_int_kind(15)
integer(kind=i8) :: start, finish, rate
call system_clock (count_rate=rate)
call system_clock (count=start)
call f()
call system_clock (count=finish)
print *,(finish-start)/real(rate)long clock(Runnable f) {
long t0 = System.currentTimeMillis();
f.run();
long t1 = System.currentTimeMillis();
return t1 - t0;
}Parameter f is actually a Runnable object, having a run() method.
The result is in milliseconds.
The result is in milliseconds.
(time (f))var
Start, Duration: DWord; // replaces TDateTime
begin
Start := GetTickCount64; // better than Now
f;
Duration := GetTickCount64 - Start;
end.sub f {};
my $start = Benchmark->new;
f;
print timestr timediff(Benchmark->new, $start);
duration = timeit.timeit("f()", setup="from __main__ import f")Setup makes the function f accessible to timeit. Returned is the execution time in seconds
def clock
t = Time.now
yield
Time.now - t
end
d = clock{ f }