Measurement DoOneEncodeMeasurement(ReedSolomon codec, BufferSet[] bufferSets)
{
long passesCompleted = 0;
long bytesEncoded = 0;
long encodingTime = 0;
while (encodingTime < MEASUREMENT_DURATION)
{
BufferSet bufferSet = bufferSets[nextBuffer];
nextBuffer = (nextBuffer + 1) % bufferSets.Length;
byte[][] shards = bufferSet.Buffers;
DateTime startTime = DateTime.UtcNow;
codec.EncodeParity(shards, 0, BUFFER_SIZE);
DateTime endTime = DateTime.UtcNow;
encodingTime += (long)(endTime - startTime).TotalMilliseconds;
bytesEncoded += BUFFER_SIZE * DATA_COUNT;
passesCompleted += 1;
}
double seconds = encodingTime / 1000.0;
double megabytes = bytesEncoded / 1000000.0;
var result = new Measurement(megabytes, seconds);
Console.WriteLine(" {0} passes, {1}", passesCompleted, result);
return(result);
}
Measurement DoOneCheckMeasurement(ReedSolomon codec, BufferSet[] bufferSets, byte[] tempBuffer)
{
long passesCompleted = 0;
long bytesChecked = 0;
long checkingTime = 0;
while (checkingTime < MEASUREMENT_DURATION)
{
BufferSet bufferSet = bufferSets[nextBuffer];
nextBuffer = (nextBuffer + 1) % bufferSets.Length;
byte[][] shards = bufferSet.Buffers;
DateTime startTime = DateTime.UtcNow;
if (!codec.IsParityCorrect(shards, 0, BUFFER_SIZE, tempBuffer))
{
throw new Exception("parity not correct");
}
DateTime endTime = DateTime.UtcNow;
checkingTime += (long)(endTime - startTime).TotalMilliseconds;
bytesChecked += BUFFER_SIZE * DATA_COUNT;
passesCompleted += 1;
}
double seconds = checkingTime / 1000.0;
double megabytes = bytesChecked / 1000000.0;
var result = new Measurement(megabytes, seconds);
Console.WriteLine(" {0} passes, {1}", passesCompleted, result);
return(result);
}
public override void Write(byte[] buffer, int offset, int count)
{
while (count > 0)
{
BufferPartition currentBuffer = GetLatestBufferWithAvailableSpaceOrDefault();
if (currentBuffer == default)
{
byte[] newBytes = ArrayPool.Rent(MaxArraySize);
currentBuffer = new BufferPartition
{
Buffer = newBytes,
DataLength = 0
};
BufferSet.Add(currentBuffer);
}
int copied = Math.Min(currentBuffer.Buffer.Length - currentBuffer.DataLength, count);
Array.Copy(buffer, offset, currentBuffer.Buffer, currentBuffer.DataLength, copied);
currentBuffer.DataLength += copied;
count -= copied;
offset += copied;
Position += copied;
}
}
private BufferPartition GetLatestBufferWithAvailableSpaceOrDefault()
{
var latestBuffer = BufferSet.LastOrDefault();
if (latestBuffer == default || latestBuffer.DataLength >= latestBuffer.Buffer.Length)
{
return(default);
private Measurement doOneEncodeMeasurement(ReedSolomon codec, BufferSet[] bufferSets)
{
long passesCompleted = 0;
long bytesEncoded = 0;
long encodingTime = 0;
while (encodingTime < MEASUREMENT_DURATION)
{
BufferSet bufferSet = bufferSets[nextBuffer];
nextBuffer = (nextBuffer + 1) % bufferSets.Length;
byte[][] shards = bufferSet.buffers;
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
codec.encodeParity(shards, 0, BUFFER_SIZE);
stopwatch.Stop();
long stop = stopwatch.ElapsedMilliseconds;
TimeSpan timespan = stopwatch.Elapsed;
encodingTime += (long)timespan.TotalMilliseconds;
bytesEncoded += BUFFER_SIZE * DATA_COUNT;
passesCompleted += 1;
}
double seconds = ((double)encodingTime) / 1000.0;
double megabytes = ((double)bytesEncoded) / 1000000.0;
Measurement result = new Measurement(megabytes, seconds);
Console.WriteLine(" {0} passes, {1}", passesCompleted, result.ToString());
return(result);
}
protected override void Dispose(bool disposing)
{
foreach (var buffer in BufferSet)
{
ArrayPool.Return(buffer.Buffer);
}
BufferSet.Clear();
}
public void Clear()
{
foreach (BufferPartition buffer in BufferSet)
{
ArrayPool.Return(buffer.Buffer);
}
BufferSet.Clear();
Position = 0;
}
protected override void NewBuffer()
{
CurrentBufferToFill = BufferSet.GetFirstEmptyBuffer();
if (CurrentBufferToFill == null)
{
throw new NullReferenceException(Cern.LocalizedResources.Instance().Exception_NoEmptyBuffer);
}
CurrentBufferToFill.Level = (currentTreeHeight - 1);
CurrentBufferToFill.Weight = (sampler.Weight);
}
protected override void NewBuffer()
{
CurrentBufferToFill = BufferSet.GetFirstEmptyBuffer();
if (CurrentBufferToFill == null)
{
throw new NullReferenceException("Oops, no empty buffer.");
}
CurrentBufferToFill.Level = (currentTreeHeight - 1);
CurrentBufferToFill.Weight = (sampler.Weight);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
protected new DoubleBuffer[] BuffersToCollapse()
{
DoubleBuffer[] fullBuffers = BufferSet.GetFullOrPartialBuffers();
SortAscendingByLevel(fullBuffers);
// if there is only one buffer at the lowest level, then increase its level so that there are at least two at the lowest level.
int minLevel = fullBuffers[1].Level;
if (fullBuffers[0].Level < minLevel)
{
fullBuffers[0].Level = minLevel;
}
return(BufferSet.GetFullOrPartialBuffersWithLevel(minLevel));
}
private Measurement doOneCheckMeasurement(ReedSolomon codec, BufferSet[] bufferSets, byte[] tempBuffer)
{
long passesCompleted = 0;
long bytesChecked = 0;
long checkingTime = 0;
while (checkingTime < MEASUREMENT_DURATION)
{
BufferSet bufferSet = bufferSets[nextBuffer];
nextBuffer = (nextBuffer + 1) % bufferSets.Length;
byte[][] shards = bufferSet.buffers;
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
if (!codec.isParityCorrect(shards, 0, BUFFER_SIZE, tempBuffer))
{
// if the parity is not correct, it will throw off the
// benchmarking because it may return early.
throw new Exception("parity not correct");
}
stopwatch.Stop(); // 停止监视
TimeSpan timespan = stopwatch.Elapsed;
checkingTime += (long)timespan.TotalMilliseconds;
bytesChecked += BUFFER_SIZE * DATA_COUNT;
passesCompleted += 1;
}
double seconds = ((double)checkingTime) / 1000.0;
double megabytes = ((double)bytesChecked) / 1000000.0;
Measurement result = new Measurement(megabytes, seconds);
Console.WriteLine(" {0} passes, {1}", passesCompleted, result);
return(result);
}
public Entity(Vector2 position, Vector2 size, Texture tex, Vector2 texScale, bool solid)
{
float x = size.X / 2.0f;
float y = size.Y / 2.0f;
float[] vertices =
{
-x, y,
-x, -y,
x, y,
x, -y
};
float[] texcoords =
{
0, 1,
0, 0,
1, 1,
1, 0
};
byte[] indices =
{
0, 1, 2, 3
};
if (texScale != Vector2.One)
{
for (int i = 0; i < texcoords.Length; i += 2)
{
texcoords[i] *= texScale.X;
texcoords[i + 1] *= texScale.Y;
}
}
VBO verts = new VBO(), texC = new VBO(), ind = new VBO();
verts.SetData(ref vertices, BufferUsageHint.StaticDraw);
texC.SetData(ref texcoords, BufferUsageHint.StaticDraw);
ind.SetData(ref indices, BufferUsageHint.StaticDraw);
buffers = new BufferSet();
buffers.VertexBuffer = verts;
buffers.VertexSize = 2;
buffers.TexCoordBuffer = texC;
buffers.TexCoordSize = 2;
buffers.IndexBuffer = ind;
buffers.DrawMode = BeginMode.TriangleStrip;
buffers.SetDrawState(DrawStates.Vertex | DrawStates.TexCoord);
this.size = size;
this.position = position;
this.tex = tex;
this.solid = solid;
Name = string.Empty;
Visible = true;
RebuildModelMatrix();
}
internal void Run()
{
Console.WriteLine("preparing...");
BufferSet[] bufferSets = new BufferSet [NUMBER_OF_BUFFER_SETS];
for (int iBufferSet = 0; iBufferSet < NUMBER_OF_BUFFER_SETS; iBufferSet++)
{
bufferSets[iBufferSet] = new BufferSet();
}
byte[] tempBuffer = new byte [BUFFER_SIZE];
List <string> summaryLines = new List <string>();
var csv = new StringBuilder();
csv.Append("Outer,Middle,Inner,Multiply,Encode,Check\n");
foreach (ICodingLoop codingLoop in CodingLoopBase.ALL_CODING_LOOPS)
{
var encodeAverage = new Measurement();
{
string testName = codingLoop.GetType().Name + " encodeParity";
Console.WriteLine("\nTEST: " + testName);
var codec = new ReedSolomon(DATA_COUNT, PARITY_COUNT, codingLoop);
Console.WriteLine(" warm up...");
DoOneEncodeMeasurement(codec, bufferSets);
DoOneEncodeMeasurement(codec, bufferSets);
Console.WriteLine(" testing...");
for (int iMeasurement = 0; iMeasurement < 10; iMeasurement++)
{
encodeAverage.Add(DoOneEncodeMeasurement(codec, bufferSets));
}
Console.WriteLine("\nAVERAGE: {0}", encodeAverage);
summaryLines.Add($" {testName,-45} {encodeAverage}");
}
// The encoding test should have filled all of the buffers with
// correct parity, so we can benchmark parity checking.
var checkAverage = new Measurement();
{
string testName = codingLoop.GetType().Name + " isParityCorrect";
Console.WriteLine("\nTEST: " + testName);
var codec = new ReedSolomon(DATA_COUNT, PARITY_COUNT, codingLoop);
Console.WriteLine(" warm up...");
DoOneEncodeMeasurement(codec, bufferSets);
DoOneEncodeMeasurement(codec, bufferSets);
Console.WriteLine(" testing...");
for (int iMeasurement = 0; iMeasurement < 10; iMeasurement++)
{
checkAverage.Add(DoOneCheckMeasurement(codec, bufferSets, tempBuffer));
}
Console.WriteLine("\nAVERAGE: {0}", checkAverage);
summaryLines.Add($" {testName,-45} {checkAverage}");
}
csv.Append(CodingLoopNameToCsvPrefix(codingLoop.GetType().Name));
csv.Append(encodeAverage.GetRate());
csv.Append(",");
csv.Append(checkAverage.GetRate());
csv.Append("\n");
}
Console.WriteLine("\n");
Console.WriteLine(csv.ToString());
Console.WriteLine("\nSummary:\n");
foreach (string line in summaryLines)
{
Console.WriteLine(line);
}
}
