internal HeaderTable SetMaxLength(int maxLength, IBufferPool pool)
{
if (checked ((int)maxLength) == MaxLength)
{
return(this);
}
if (maxLength == 0 || Count == 0)
{
_buffer?.Dispose();
return(new HeaderTable(maxLength ^ DefaultMaxLength, 0, null));
}
int bytesToKeep = 0, headersToKeep = 0, totalBytes = 0;
var span = _buffer.Data.Span;
for (int i = 0; i < Count; i++)
{
long lengths = span.Slice(bytesToKeep).Read <long>();
int itemLen = ItemLength(lengths);
totalBytes += itemLen;
if (totalBytes > MaxLength)
{
break;
}
bytesToKeep += itemLen;
headersToKeep++;
}
var newBuffer = pool.Lease(maxLength);
_buffer.Data.Span.Slice(0, bytesToKeep).CopyTo(newBuffer.Data.Span.Slice(bytesToKeep));
_buffer.Dispose();
return(new HeaderTable(maxLength ^ DefaultMaxLength, headersToKeep, newBuffer));
}
/// <summary>
/// Completes an asynchronous send
/// </summary>
/// <param name="ar">AsyncResul obtained from BeginSend</param>
private void CompleteSend(IAsyncResult ar)
{
// Complete asynchronous send
IBuffer sendBuffer = (IBuffer)ar.AsyncState;
try
{
if (!socket.Connected)
{
return;
}
lock (syncSocket)
{
socket.EndSend(ar);
}
sendBuffer.Dispose();
sendBuffer = null;
}
catch (Exception ex)
{
Diags.LogSocketException(ex);
if (sendBuffer != null)
{
sendBuffer.Dispose();
sendBuffer = null;
}
}
}
/// <summary>
/// Begins an asynchronous receive
/// </summary>
/// <param name="Buffer">Buffer to store received data</param>
/// <param name="ReadCallBack">Method to call on receiving data</param>
/// <param name="StateObject">State object to be passed to ReadCallBack</param>
/// <returns>AsyncResult for the asynchronous operation</returns>
public IAsyncResult BeginReceive(int BufferLength, AsyncCallback ReadCallBack, object StateObject)
{
try
{
if (recvBuffer == null || recvBuffer.IsDisposed)
{
recvBuffer = bufferPool.GetBuffer(BufferLength);
}
else if (recvBuffer.Size < BufferLength)
{
recvBuffer.Dispose();
recvBuffer = bufferPool.GetBuffer(BufferLength);
}
lock (syncSocket)
{
return(socket.BeginReceive(recvBuffer.GetSegments(), SocketFlags.None, ReadCallBack, StateObject));
}
}
catch (Exception ex)
{
Diags.LogSocketException(ex);
return(null);
}
}
private IBuffer GetGlBuffer(ref IBuffer glBuffer, BufferTarget target, int offset)
{
if (!dirty)
{
return(glBuffer);
}
var nonDynamic = rawDataResource.Volatility != ResourceVolatility.Volatile;
var resourcePtr = rawDataResource.Map();
var resourceOffsetPtr = resourcePtr + offset;
var glBufferSize = rawDataResource.Size - offset;
if (glBuffer == null || glBuffer.SizeInBytes != glBufferSize)
{
glBuffer?.Dispose();
var usage = nonDynamic
? BufferUsageHint.StaticDraw
: BufferUsageHint.DynamicDraw;
// todo: target for index buffer
glBuffer = infra.GlContext.Create.Buffer(target, glBufferSize, usage, resourceOffsetPtr);
}
else if (nonDynamic)
{
glBuffer.SetData(resourceOffsetPtr);
}
else
{
var bufferPtr = glBuffer.Map(0, glBufferSize, MapAccess.Write | MapAccess.InvalidateBuffer);
PtrHelper.CopyBulk((byte *)bufferPtr, (byte *)resourceOffsetPtr, glBufferSize);
glBuffer.Unmap();
}
rawDataResource.Unmap(false);
dirty = false;
return(glBuffer);
}
/// <summary>
/// Sends data via the socket asynchronously
/// </summary>
/// <param name="Message">Data to transmit</param>
public void Send(ResponseData Message)
{
IBuffer sendBuffer = null;
//TODO: ENHANCEMENT: Log consecutive bad request response types and use that information to disconnect socket after 3
try
{
lock (syncSocket)
{
if (sentMsgs.Count > 1)
{
sentMsgs.Dequeue();
}
sentMsgs.Enqueue(Message);
//Log error if .Data is null -- this will help raise a flag if the message is being resent after .ClearData was called
Diags.Assert(Message.Data != null, "ASSERTION FAILED: Message Data is null", new System.Diagnostics.StackTrace().ToString());
sendBuffer = bufferPool.GetBuffer(Message.Data.LongLength);
sendBuffer.CopyFrom(Message.Data);
socket.BeginSend(sendBuffer.GetSegments(), SocketFlags.None, CompleteSend, sendBuffer);
Message.ClearData(); //free some memory
}
}
catch (Exception ex)
{
Diags.LogSocketException(ex);
if (sendBuffer != null)
{
sendBuffer.Dispose();
sendBuffer = null;
}
}
}
void IDisposable.Dispose()
{
textureVariable?.Dispose();
bindings?.Dispose();
pipelineState?.Dispose();
constantBuffer?.Dispose();
}
public void TestWrite()
{
LosgapSystem.InvokeOnMaster(() => {
// Define variables and constants
IBuffer res = BufferFactory.NewBuffer <int>()
.WithUsage(ResourceUsage.Write)
.WithLength(100)
.Create();
IBuffer copyDest = (res as Buffer <int>).Clone()
.WithUsage(ResourceUsage.StagingRead)
.WithPermittedBindings(GPUBindings.None)
.Create();
// Set up context
// Execute
Assert.IsTrue(res.CanWrite);
res.Write(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }, 10U);
res.CopyTo(copyDest);
// Assert outcome
byte[] readData = copyDest.Read();
for (int i = 10; i < 20; ++i)
{
Assert.AreEqual(i - 9, readData[i]);
}
res.Dispose();
copyDest.Dispose();
});
}
internal static void Share()
{
IEnumerable <int> sequence = Enumerable.Range(0, 5);
IEnumerator <int> independentIterator1 = sequence.GetEnumerator();
IEnumerator <int> independentIterator2 = sequence.GetEnumerator();
independentIterator1.MoveNext(); independentIterator1.Current.WriteLine(); // 0| |
independentIterator2.MoveNext(); independentIterator2.Current.WriteLine(); // |0|
independentIterator1.MoveNext(); independentIterator1.Current.WriteLine(); // 1| |
IEnumerator <int> independentIterator3 = sequence.GetEnumerator(); // | |
independentIterator3.MoveNext(); independentIterator3.Current.WriteLine(); // | |0
independentIterator1.MoveNext(); independentIterator1.Current.WriteLine(); // 2| |
independentIterator2.MoveNext(); independentIterator2.Current.WriteLine(); // |1|
// ...
IBuffer <int> share = Enumerable.Range(0, 5).Share();
IEnumerator <int> sharedIterator1 = share.GetEnumerator();
IEnumerator <int> sharedIterator2 = share.GetEnumerator();
sharedIterator1.MoveNext(); sharedIterator1.Current.WriteLine(); // 0| |
sharedIterator2.MoveNext(); sharedIterator2.Current.WriteLine(); // |1|
sharedIterator1.MoveNext(); sharedIterator1.Current.WriteLine(); // 2| |
IEnumerator <int> sharedIterator3 = share.GetEnumerator(); // | |
sharedIterator3.MoveNext(); sharedIterator3.Current.WriteLine(); // | |3
share.Dispose();
sharedIterator1.MoveNext(); // ObjectDisposedException.
sharedIterator2.MoveNext(); // ObjectDisposedException.
sharedIterator3.MoveNext(); // ObjectDisposedException.
}
public void BufferIsReusedAfterDispose()
{
subject = new CachingBufferManager(options);
IBuffer buffer1 = subject.GetBuffer(2049);
buffer1.Dispose();
IBuffer buffer2 = subject.GetBuffer(2050);
Assert.AreSame(buffer1, buffer2);
}
void IDisposable.Dispose()
{
textureVariableRgb?.Dispose();
bindingsRgb?.Dispose();
psoRgb?.Dispose();
textureVariableInvert?.Dispose();
bindingsInvert?.Dispose();
psoInvert?.Dispose();
constantBuffer?.Dispose();
}
public void Push(IBuffer item)
{
if (_availableCount > _initialCount)
{
Interlocked.Decrement(ref _totalCount);
item.Dispose();
}
else
{
PushBuffer(item);
}
}
public void TryFreeSlabTest()
{
long SlabSize = BufferPool.MinimumSlabSize;
int InitialSlabs = 1;
int SubsequentSlabs = 3;
BufferPool target = new BufferPool(SlabSize, InitialSlabs, SubsequentSlabs);
Assert.AreEqual <long>(InitialSlabs, target.SlabCount);
//GetBuffer of slab size
IBuffer buff1 = target.GetBuffer(SlabSize);
//confirm that slabcount is 1
Assert.AreEqual <long>(InitialSlabs, target.SlabCount);
//Try to free a slab and do a recount -- slabcount should remain 1
target.TryFreeSlab();
Assert.AreEqual <long>(InitialSlabs, target.SlabCount);
//Get it again to force construction of 3 new slabs
IBuffer buff2 = target.GetBuffer(SlabSize);
Assert.AreEqual <long>(SubsequentSlabs + InitialSlabs, target.SlabCount);
//Free a slab and do a recount
target.TryFreeSlab();
Assert.AreEqual <long>(SubsequentSlabs + InitialSlabs - 1, target.SlabCount);
//Free a slab and do a recount -- slabcount should not budge since only one slab is free
target.TryFreeSlab();
Assert.AreEqual <long>(SubsequentSlabs + InitialSlabs - 1, target.SlabCount);
//Try to free a slab and do a recount
//Free 1st buffer
buff1.Dispose();
target.TryFreeSlab();
Assert.AreEqual <long>(SubsequentSlabs + InitialSlabs - 2, target.SlabCount);
//Try to free a slab and do a recount -- slabcount shouldn't go below two
target.TryFreeSlab();
Assert.AreEqual <long>(SubsequentSlabs + InitialSlabs - 2, target.SlabCount);
//Free buffer, try to free a slab and do a recount -- slabcount should now be back to 1
buff2.Dispose();
target.TryFreeSlab();
Assert.AreEqual <long>(SubsequentSlabs + InitialSlabs - 3, target.SlabCount);
}
public unsafe IVertexArray GetVao()
{
if (!isDirty && NumPoints == lastPointCount)
{
return(vao);
}
if (aspect.VisualBorderCurve == null || aspect.VisualBorderCurve.Count == 0)
{
return(null);
}
if (vao == null)
{
vao = glContext.Create.VertexArray();
}
var newPointCount = NumPoints;
if (vertexBuffer == null || bufferPointCapacity < newPointCount)
{
vertexBuffer?.Dispose();
while (bufferPointCapacity < newPointCount)
{
bufferPointCapacity *= 2;
}
vertexBuffer = glContext.Create.Buffer(BufferTarget.Array, bufferPointCapacity * sizeof(Vector4), BufferUsageHint.DynamicDraw);
vao.SetVertexAttributeF(0, vertexBuffer, VertexAttributeDimension.Four, VertexAttribPointerType.Float, false, sizeof(Vector4), 0);
}
var rawData = aspect.BorderComplete
? aspect.VisualBorderCurve.Concat(aspect.VisualBorderCurve.First().EnumSelf()).Select(xy => new Vector4(xy, 0, 1)).ToArray()
: aspect.VisualBorderCurve.Select(xy => new Vector4(xy, 0, 1)).ToArray();
var sizeInBytes = rawData.Length * sizeof(Vector4);
var dst = vertexBuffer.Map(0, vertexBuffer.SizeInBytes, MapAccess.Write | MapAccess.InvalidateBuffer);
fixed(Vector4 *src = rawData)
PtrHelper.CopyBulk((byte *)dst, (byte *)src, sizeInBytes);
vertexBuffer.Unmap();
lastPointCount = newPointCount;
isDirty = false;
return(vao);
}
private async Task <ReadFileResult> ReadFile(int length)
{
IBuffer content = bufferAllocator.Allocate(length);
Stream dest = content.GetStream();
IMD5HashProvider chunkHash = MD5HashProviderFactory.GetHashProvider().CreateHash();
byte[] b = ArrayPool <byte> .Shared.Rent(Configuration.BufferSize);
try
{
int read = 0;
int toRead = length;
do
{
read = await fileStream.ReadAsync(b, offset : 0, count : Math.Min(b.Length, toRead)).ConfigureAwait(false);
toRead -= read;
await dest.WriteAsync(b, offset : 0, count : read).ConfigureAwait(false);
chunkHash.Append(b, offset: 0, size: read);
fileHash.Append(b, offset: 0, size: read);
} while (read > 0 && toRead > 0);
if (toRead > 0)
{
throw new Exception($"Expected to read {length} bytes, actual read {length - toRead} bytes");
}
chunkHash.Finalize(ArrayPool <byte> .Shared.Rent(0), 0, 0);
return(new ReadFileResult {
Content = content, Hash = chunkHash.GetComputedHashAsString()
});
}
catch
{
content.Dispose();
throw;
}
finally
{
ArrayPool <byte> .Shared.Return(b);
dest.Dispose();
}
}
public void UseBiggerActionReusingExisting()
{
options.MaxBuffersPerSizeBand = 2;
options.ActionOnBufferUnavailable = CachingBufferManager.Options.BufferUnavailableAction.UseBigger;
subject = new CachingBufferManager(options);
// This buffer will be used later on
IBuffer bigger = subject.GetBuffer(4098);
bigger.Dispose();
IBuffer buffer1 = subject.GetBuffer(3000);
IBuffer buffer2 = subject.GetBuffer(3000);
IBuffer buffer3 = subject.GetBuffer(3000);
Assert.AreSame(bigger, buffer3);
}
internal static void Publish2()
{
IBuffer <int> publish = Enumerable.Range(0, 5).Publish();
IEnumerator <int> iterator1 = publish.GetEnumerator();
// iterator1: 0 1 2 3 4
IEnumerator <int> iterator2 = publish.GetEnumerator();
// iterator1: 0 1 2 3 4
iterator1.MoveNext(); iterator1.Current.WriteLine(); // 0| |Trace: 0
iterator1.MoveNext(); iterator1.Current.WriteLine(); // 1| |Trace: 1
iterator1.MoveNext(); iterator1.Current.WriteLine(); // 2| |Trace: 2
iterator2.MoveNext(); iterator2.Current.WriteLine(); // |0|
iterator1.MoveNext(); iterator1.Current.WriteLine(); // 3| |Trace: 3
iterator2.MoveNext(); iterator2.Current.WriteLine(); // |1|
iterator1.MoveNext(); iterator1.Current.WriteLine(); // 4| |Trace: 4
publish.Dispose();
iterator1.MoveNext(); // ObjectDisposedException.
iterator2.MoveNext(); // ObjectDisposedException.
}
internal static void Publish()
{
IBuffer <int> publish = TracedRange(0, 5).Publish();
IEnumerator <int> iterator1 = publish.GetEnumerator();
// iterator1: 0 1 2 3 4
iterator1.MoveNext(); Trace.WriteLine(iterator1.Current); // 0| |Trace: 0
iterator1.MoveNext(); Trace.WriteLine(iterator1.Current); // 1| |Trace: 1
iterator1.MoveNext(); Trace.WriteLine(iterator1.Current); // 2| |Trace: 2
IEnumerator <int> iterator2 = publish.GetEnumerator(); // | |
// iterator2: 3 4 | |
iterator2.MoveNext(); Trace.WriteLine(iterator2.Current); // |3|Trace: 3
iterator1.MoveNext(); Trace.WriteLine(iterator1.Current); // 3| |
iterator2.MoveNext(); Trace.WriteLine(iterator2.Current); // |4|Trace: 4
iterator1.MoveNext(); Trace.WriteLine(iterator1.Current); // 4| |
// Trace: 0 1 2 3 4.
publish.Dispose();
iterator1.MoveNext(); // ObjectDisposedException.
iterator2.MoveNext(); // ObjectDisposedException.
}
public void Dispose()
{
Buffer.Dispose();
}
public void Dealloc(IBuffer buffer)
{
// Deallocate the buffer, since we're an unpooled allocator we don't really need to do much,
// other than to dispose the buffer
buffer.Dispose(this);
}
public void Dispose()
{
buffer.Dispose();
GC.SuppressFinalize(this);
}
public void Draw()
{
var sketches = sketchService.GetSketches();
var totalPointCount = sketches.Sum(x => x.Count);
if (totalPointCount == 0)
{
return;
}
if (data == null || totalPointCount > data.Length)
{
vertexBuffer?.Dispose();
var size = data?.Length ?? 1024;
while (size < totalPointCount)
{
size *= 2;
}
data = new Vector2[size];
vertexBuffer = glContext.Create.Buffer(BufferTarget.Array, data.Length * sizeof(Vector2), BufferUsageHint.DynamicDraw);
vao.SetVertexAttributeF(0, vertexBuffer, VertexAttributeDimension.Two, VertexAttribPointerType.Float, false, sizeof(Vector2), 0);
}
int offset = 0;
foreach (var sketch in sketches)
{
foreach (var point in sketch)
{
data[offset++] = point;
}
}
var sketchSize = totalPointCount * sizeof(Vector2);
var map = vertexBuffer.Map(0, sketchSize, MapAccess.Write | MapAccess.InvalidateRange);
fixed(Vector2 *pData = data)
PtrHelper.CopyBulk((byte *)map, (byte *)pData, sketchSize);
vertexBuffer.Unmap();
glContext.Bindings.Program.Set(shaderProgram);
glContext.Bindings.VertexArray.Set(vao);
glContext.States.DepthStencil.DepthTestEnable.Set(false);
glContext.States.DepthStencil.DepthMask.Set(false);
OpenTK.Graphics.OpenGL4.GL.LineWidth(6f);
offset = 0;
foreach (var sketch in sketches)
{
glContext.Actions.Draw.Arrays(BeginMode.LineStrip, offset, sketch.Count);
offset += sketch.Count;
}
OpenTK.Graphics.OpenGL4.GL.LineWidth(1f);
glContext.States.DepthStencil.DepthTestEnable.Set(true);
glContext.States.DepthStencil.DepthMask.Set(true);
}
public void Dealloc(IBuffer buffer)
{
this._bufferIndexPool.Push((buffer as DefaultBuffer).Offset);
buffer.Dispose(this);
}
public void Dispose()
{
_buffer.Dispose();
}
public void Dispose() => _buffer.Dispose();
