private TimeSpan DoTimingRun(Crc32ModeS calculator, bool useFastMethod, bool useLongMessage, int count)
{
var message = new byte[useLongMessage ? 11 : 4];
var random = new Random();
DateTime start, finish;
if(useFastMethod) {
start = DateTime.UtcNow;
for(var i = 0;i < count;++i) {
random.NextBytes(message);
calculator.ComputeChecksumBytes(message, 0, message.Length);
}
finish = DateTime.UtcNow;
} else if(useLongMessage) {
start = DateTime.UtcNow;
for(var i = 0;i < count;++i) {
random.NextBytes(message);
calculator.ComputeChecksumBytesTraditional88(message);
}
finish = DateTime.UtcNow;
} else {
start = DateTime.UtcNow;
for(var i = 0;i < count;++i) {
random.NextBytes(message);
calculator.ComputeChecksumBytesTraditional32(message);
}
finish = DateTime.UtcNow;
}
return finish - start;
}
public void Crc32ModeS_Timing_Test()
{
var crcCalculator = new Crc32ModeS();
var count = 1000000;
var fastShortTiming = DoTimingRun(crcCalculator, true, false, count);
var fastLongTiming = DoTimingRun(crcCalculator, true, true, count);
var slowShortTiming = DoTimingRun(crcCalculator, false, false, count);
var slowLongTiming = DoTimingRun(crcCalculator, false, true, count);
Assert.Inconclusive("Timings on {0:N0} messages: 'Fast' and short: {1}, 'Fast' and long: {2}, 'Slow' and short: {3}, 'Slow' and long: {4}",
count,
fastShortTiming, fastLongTiming,
slowShortTiming, slowLongTiming);
}
