If you are working with file information, use e.g. `file_stats=stat();
file_creation_time = file_stats.ctime; file_modification_time =
file_stat.mtime;`
You will get Float64 values, to make FineComputerTimes from those,
function FineComputerTime(stat_time::Float64)
nanosecs = round(UInt64, stat_time * 1.0e9)
return FineComputerTime(nanosecs)
end
On Tuesday, November 1, 2016 at 3:44:07 PM UTC-4, Jeffrey Sarnoff wrote:
>
> Look at the help for tic() and toc().
> Do you care about interfacing directly with jl_ routines? If not, and you
> are trying to make your own harness ... perhaps this would help:
> #=
> Using immutable rather than type with fields that are
> simple and immediate values keeps information directly
> available (rather than indirectly available, like arrays).
>
> Use Int64 because nanosecond timing uses 64 bits (UInt64).
>
> time_ns() "Get the time in nanoseconds.
> The time corresponding to 0 is undefined,
> and wraps every 5.8 years."
>
> time_zero because the timer is given as a UInt64 value, and
> there are more of those than positive Int64s.
> =#
>
> const time_zero = [time_ns()]
> get_time_zero() = time_zero[1]
> function set_time_zero(nanoseconds::UInt64)
> time_zero[1] = nanoseconds
> return nanoseconds
> end
>
> immutable FineComputerTime
> seconds::Int64
> nanoseconds::Int64
> end
>
> function FineComputerTime(nanosecs::UInt64)
> nanosecs -= get_time_zero()
> secs, nsecs = fldmod( nanosecs, 1_000_000_000%UInt64 ) # value%UInt64
> is a fast way to force the type
> return FineComputerTime( Int64(secs), Int64(nsecs) )
> end
>
> FineComputerTime() = FineComputerTime(time_ns())
>
>
>
>
>
>
>
>
> On Friday, October 28, 2016 at 10:07:42 AM UTC-4, Brandon Taylor wrote:
>>
>> Right now in base jl_stat_ctime looks like this:
>>
>> JL_DLLEXPORT double jl_stat_ctime(char *statbuf)
>> {
>> uv_stat_t *s;
>> s = (uv_stat_t*)statbuf;
>> return (double)s->st_ctim.tv_sec + (double)s->st_ctim.tv_nsec * 1e-9;
>> }
>>
>> And it's called with
>>
>> ccall(:jl_stat_ctime, Float64, (Ptr{UInt8},), buf)
>>
>> I'd like to simplify this.
>>
>> I'd like a type
>>
>> type FineComputerTime
>> seconds::Int
>> nanoseconds::Int
>> end
>>
>> And a way to fill it in using the stat buffer.
>>
>> Can anyone offer some tips? The c code keeps confusing me.
>>
>>
>>
>>
>> I
>>
>
