public static double Measure(Action a, BenchmarkOptions options = default(BenchmarkOptions))
{
if (options == default(BenchmarkOptions))
{
options = BenchmarkOptions.Default();
}
var decompiler = new JitCodeDecompiler();
var warmupCount = options.WarmUpCount;
var runCount = options.RunCount;
DecompiledMethod before = null;
if (options.Decompile)
{
a();
before = decompiler.DecompileMethod(a.Method, options.DecompileMethodName);
}
//
// Quick Warm Up.
//
XConsole.WriteLine("Quick Benchmark:");
XConsole.WriteLine($" [1] Warm Up ...({warmupCount})");
for (int i = 0; i < warmupCount; i++)
{
a();
}
Span <double> res = stackalloc double[runCount];
var initialMemory = GC.GetTotalAllocatedBytes();
XConsole.WriteLine($" [2] Running ...({runCount})");
for (int i = 0; i < runCount; i++)
{
Stopwatch w = new Stopwatch();
w.Start();
{
a();
}
w.Stop();
res[i] = w.ElapsedMilliseconds;
}
var memoryAfterRuns = GC.GetTotalAllocatedBytes();
double sum = 0;
for (int i = 0; i < res.Length; i++)
{
XConsole.WriteLine($" [3-{i}] Took: `{res[i]}` ms");
sum += res[i];
}
var cursonLeft = XConsole.CursorLeft;
var mean = sum / runCount;
var stdDev = StdDev(res, mean);
var totalMemory = memoryAfterRuns - initialMemory;
int separatorLen = cursonLeft + 30 + (runCount * 4);
XConsole.DrawSeparator(separatorLen);
XConsole.WriteLine($" Mean -> `{string.Format("{0:N4}", mean)}` ms");
XConsole.WriteLine($" StdDev -> `{string.Format("{0:N4}", stdDev)}` ms");
XConsole.WriteLine($" Total Memory -> `{totalMemory}` b\r\n");
var cursorTop = XConsole.CursorTop;
XConsole.DrawPlot(30, cursorTop - 5, res.ToArray());
if (options.Decompile)
{
XConsole.WriteLine($" Decompiling Method: `{options.DecompileMethodName}`");
cursorTop += 2;
var after = decompiler.DecompileMethod(before.CodeAddress, before.CodeSize, options.DecompileMethodName);
if (before.CodeAddress == after.CodeAddress)
{
XConsole.WriteLine("Captured Only Single Tier");
var coords1 = PrintCode("Tier0", 1, cursorTop + 1, before);
XConsole.SetCursorPosition(0, coords1.y);
}
else
{
var coords1 = PrintCode("Tier0", 1, cursorTop, before);
var coords2 = PrintCode("Tier1", 50, cursorTop, after);
int top = coords1.y > coords2.y ? coords1.y : coords2.y;
XConsole.SetCursorPosition(0, top);
}
}
return(mean);
}
