public override void Run()
{
long st = Runtime.NanoTime();
this.crc.Reset();
for (int i = 0; i < trials; i++)
{
this.crc.Update(bytes, 0, size);
}
long et = Runtime.NanoTime();
double secsElapsed = (et - st) / 1000000000.0d;
results[index] = new TestPureJavaCrc32.PerformanceTest.BenchResult(this.crc.GetValue
(), mbProcessed / secsElapsed);
}
/// <exception cref="System.Exception"/>
private static TestPureJavaCrc32.PerformanceTest.BenchResult DoBench(Type clazz,
int numThreads, byte[] bytes, int size)
{
Thread[] threads = new Thread[numThreads];
TestPureJavaCrc32.PerformanceTest.BenchResult[] results = new TestPureJavaCrc32.PerformanceTest.BenchResult
[threads.Length];
{
int trials = BytesPerSize / size;
double mbProcessed = trials * size / 1024.0 / 1024.0;
Constructor <Checksum> ctor = clazz.GetConstructor();
for (int i = 0; i < threads.Length; i++)
{
int index = i;
threads[i] = new _Thread_327(ctor, trials, bytes, size, results, index, mbProcessed
);
}
}
for (int i_1 = 0; i_1 < threads.Length; i_1++)
{
threads[i_1].Start();
}
for (int i_2 = 0; i_2 < threads.Length; i_2++)
{
threads[i_2].Join();
}
long expected = results[0].value;
double sum = results[0].mbps;
for (int i_3 = 1; i_3 < results.Length; i_3++)
{
if (results[i_3].value != expected)
{
throw new Exception(clazz.Name + " results not matched.");
}
sum += results[i_3].mbps;
}
return(new TestPureJavaCrc32.PerformanceTest.BenchResult(expected, sum / results.
Length));
}
/// <exception cref="System.Exception"/>
private static void DoBench(IList <Type> crcs, byte[] bytes, int size, TextWriter
@out)
{
string numBytesStr = " #Bytes ";
string numThreadsStr = "#T";
string diffStr = "% diff";
@out.Write('|');
PrintCell(numBytesStr, 0, @out);
PrintCell(numThreadsStr, 0, @out);
for (int i = 0; i < crcs.Count; i++)
{
Type c = crcs[i];
@out.Write('|');
PrintCell(c.Name, 8, @out);
for (int j = 0; j < i; j++)
{
PrintCell(diffStr, diffStr.Length, @out);
}
}
@out.Printf("\n");
for (int numThreads = 1; numThreads <= 16; numThreads <<= 1)
{
@out.Printf("|");
PrintCell(size.ToString(), numBytesStr.Length, @out);
PrintCell(numThreads.ToString(), numThreadsStr.Length, @out);
TestPureJavaCrc32.PerformanceTest.BenchResult expected = null;
IList <TestPureJavaCrc32.PerformanceTest.BenchResult> previous = new AList <TestPureJavaCrc32.PerformanceTest.BenchResult
>();
foreach (Type c in crcs)
{
System.GC.Collect();
TestPureJavaCrc32.PerformanceTest.BenchResult result = DoBench(c, numThreads, bytes
, size);
PrintCell(string.Format("%9.1f", result.mbps), c.Name.Length + 1, @out);
//check result
if (c == zip)
{
expected = result;
}
else
{
if (expected == null)
{
throw new RuntimeException("The first class is " + c.FullName + " but not " + zip
.FullName);
}
else
{
if (result.value != expected.value)
{
throw new RuntimeException(c + " has bugs!");
}
}
}
//compare result with previous
foreach (TestPureJavaCrc32.PerformanceTest.BenchResult p in previous)
{
double diff = (result.mbps - p.mbps) / p.mbps * 100;
PrintCell(string.Format("%5.1f%%", diff), diffStr.Length, @out);
}
previous.AddItem(result);
}
@out.Printf("\n");
}
}