public UnmanagedBuffersPool.AllocatedMemoryData GetMemory(int requestedSize)
{
if (requestedSize == 0)
{
return new UnmanagedBuffersPool.AllocatedMemoryData
{
Address = IntPtr.Zero,
SizeInBytes = 0
}
}
;
var actualSize = Bits.NextPowerOf2(requestedSize);
var index = UnmanagedBuffersPool.GetIndexFromSize(actualSize);
if (index == -1)
{
return(Pool.Allocate(requestedSize));
}
if (_allocatedMemory?[index] == null ||
_allocatedMemory[index].Count == 0)
{
return(Pool.Allocate(actualSize));
}
var last = _allocatedMemory[index].Pop();
return(last);
}
public void ReturnMemory(UnmanagedBuffersPool.AllocatedMemoryData buffer)
{
if (buffer.SizeInBytes == 0)
{
return;
}
if (_allocatedMemory == null)
{
_allocatedMemory = new Stack <UnmanagedBuffersPool.AllocatedMemoryData> [32];
}
var index = UnmanagedBuffersPool.GetIndexFromSize(buffer.SizeInBytes);
if (index == -1)
{
Pool.Return(buffer);
return;
}
if (_allocatedMemory[index] == null)
{
_allocatedMemory[index] = new Stack <UnmanagedBuffersPool.AllocatedMemoryData>();
}
_allocatedMemory[index].Push(buffer);
}
public JsonOperationContext(UnmanagedBuffersPool pool)
{
Pool = pool;
Encoding = new UTF8Encoding();
CachedProperties = new CachedProperties(this);
}