/// <inheritdoc/>
public override TimeSpan MeasureFrom(ProfilingMarker marker)
{
using var binding = Accelerator.BindScoped();
if (!(marker is CudaProfilingMarker startMarker))
{
throw new ArgumentException(
string.Format(
RuntimeErrorMessages.InvalidProfilingMarker,
GetType().Name,
marker.GetType().Name),
nameof(marker));
}
// Wait for the markers to complete, then calculate the duration.
startMarker.Synchronize();
Synchronize();
CudaException.ThrowIfFailed(
CurrentAPI.ElapsedTime(
out float milliseconds,
startMarker.EventPtr,
EventPtr));
return(TimeSpan.FromMilliseconds(milliseconds));
}
/// <inheritdoc/>
public override TimeSpan MeasureFrom(ProfilingMarker marker)
{
using var binding = Accelerator.BindScoped();
return((marker is CPUProfilingMarker startMarker)
? Timestamp - startMarker.Timestamp
: throw new ArgumentException(
string.Format(
RuntimeErrorMessages.InvalidProfilingMarker,
GetType().Name,
marker.GetType().Name),
nameof(marker)));
}
/// <inheritdoc/>
public override TimeSpan MeasureFrom(ProfilingMarker marker)
{
using var binding = Accelerator.BindScoped();
if (!(marker is CLProfilingMarker startMarker))
{
throw new ArgumentException(
string.Format(
RuntimeErrorMessages.InvalidProfilingMarker,
GetType().Name,
marker.GetType().Name),
nameof(marker));
}
// Wait for the markers to complete, then calculate the duration.
startMarker.Synchronize();
Synchronize();
CLException.ThrowIfFailed(
CurrentAPI.GetEventProfilingInfo(
EventPtr,
CLProfilingInfo.CL_PROFILING_COMMAND_END,
out var endNanoseconds));
CLException.ThrowIfFailed(
CurrentAPI.GetEventProfilingInfo(
startMarker.EventPtr,
CLProfilingInfo.CL_PROFILING_COMMAND_END,
out var startNanoseconds));
// TimeSpan tracks time in ticks, where a single tick represents one hundred
// nanoseconds, so we need to convert our elasped nanoseconds into ticks.
//
// NB: If the start time is later than the end time, reverse the calculation,
// and then restore the correct signed result.
bool swapped = false;
if (endNanoseconds < startNanoseconds)
{
Utilities.Swap(ref startNanoseconds, ref endNanoseconds);
swapped = true;
}
var elapsedNanoseconds = endNanoseconds - startNanoseconds;
var ticks = (long)(elapsedNanoseconds / 100UL);
if (swapped)
{
ticks = -ticks;
}
return(new TimeSpan(ticks));
}
/// <inheritdoc/> public override TimeSpan MeasureFrom(ProfilingMarker marker) => (marker is CPUProfilingMarker startMarker)
