huahaofeng
/
aspnetcore
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Added fast path for single memory ReadableBuffer (#1512) 

* Special case single buffer
* Added fast path for single span buffers in UvWriteReq
This commit is contained in:
David Fowler 2017-03-20 00:11:41 -07:00 committed by GitHub
parent 2ed456fd68
commit 39819d6708
2 changed files with 42 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/Microsoft.AspNetCore.Server.Kestrel/Adapter/Internal/StreamSocketOutput.cs
View File

@ -109,11 +109,19 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Adapter.Internal
await _outputStream.FlushAsync();
}
foreach (var memory in buffer)
if (buffer.IsSingleSpan)
{
var array = memory.GetArray();
var array = buffer.First.GetArray();
await _outputStream.WriteAsync(array.Array, array.Offset, array.Count);
}
else
{
foreach (var memory in buffer)
{
var array = memory.GetArray();
await _outputStream.WriteAsync(array.Array, array.Offset, array.Count);
}
}
}
finally
{

44
src/Microsoft.AspNetCore.Server.Kestrel/Internal/Networking/UvWriteReq.cs
View File

@ -4,7 +4,6 @@
using System;
using System.Buffers;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO.Pipelines;
using System.Runtime.InteropServices;
using Microsoft.AspNetCore.Server.Kestrel.Internal.Infrastructure;
@ -68,9 +67,16 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Internal.Networking
_pins.Add(GCHandle.Alloc(this, GCHandleType.Normal));
var nBuffers = 0;
foreach (var _ in buffer)
if (buffer.IsSingleSpan)
{
nBuffers++;
nBuffers = 1;
}
else
{
foreach (var _ in buffer)
{
nBuffers++;
}
}
var pBuffers = (Libuv.uv_buf_t*)_bufs;
@ -82,19 +88,33 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Internal.Networking
_pins.Add(gcHandle);
pBuffers = (Libuv.uv_buf_t*)gcHandle.AddrOfPinnedObject();
}
var index = 0;
foreach (var memory in buffer)
if (nBuffers == 1)
{
// REVIEW: This isn't necessary for our default pool since the memory is
// already pinned but it also makes tests pass
var memory = buffer.First;
var memoryHandle = memory.Pin();
_handles.Add(memoryHandle);
// create and pin each segment being written
pBuffers[index] = Libuv.buf_init(
(IntPtr)memoryHandle.PinnedPointer,
memory.Length);
index++;
// Fast path for single buffer
pBuffers[0] = Libuv.buf_init(
(IntPtr)memoryHandle.PinnedPointer,
memory.Length);
}
else
{
var index = 0;
foreach (var memory in buffer)
{
// This won't actually pin the buffer since we're already using pinned memory
var memoryHandle = memory.Pin();
_handles.Add(memoryHandle);
// create and pin each segment being written
pBuffers[index] = Libuv.buf_init(
(IntPtr)memoryHandle.PinnedPointer,
memory.Length);
index++;
}
}
_callback = callback;