/// <summary>
/// Release a frame, moving it into memory pool
/// </summary>
/// <param name="frame">The frame to release, will be set to null</param>
public void Release(ref Frame frame)
{
if (frame == null)
{
return;
}
int frameSize = GetNormalizedSize(frame.LengthBuffer);
if (frameSize == -1 || frameSize != frame.LengthBuffer)
{
return; // if frame is too large for pool or length is non-standard, dispose
}
lock (_lock)
{
int idx = GetPoolIndex(frameSize, true);
Queue queue = _framePool[idx] as Queue;
if (queue == null)
{
throw new System.ApplicationException();
}
frame.ReserveHeader(0); // clear frame
frame.SanityCheck(false);
frame.released = true;
bool ignore = queue.AddFrame(ref frame);
}
frame = null;
}
/// <summary>
/// Allocates a new frame of specified size.
/// </summary>
/// <param name="frameSize"></param>
/// <returns></returns>
public Frame GetFrame(int reqFrameSize)
{
int frameSize = GetNormalizedSize(reqFrameSize);
if (frameSize == -1) // too large for frame pool
{
return(new Frame(reqFrameSize));
}
// try to get frame from pool
lock (_lock)
{
int idx = GetPoolIndex(frameSize, false);
if (idx != -1)
{
Queue queue = _framePool[idx] as Queue;
if (queue == null)
{
throw new System.ApplicationException();
}
Frame frame = queue.GetFrame();
if (frame != null)
{
frame.SanityCheck(true);
if ((frame.lenOffset != 0) || (frame.lenData != 0))
{
throw new ApplicationException("frame was not properly initialized.");
}
frame.released = false;
return(frame);
}
}
}
// create a new frame
return(new Frame(frameSize));
}
/// <summary>
/// Release a frame, moving it into memory pool
/// </summary>
/// <param name="frame">The frame to release, will be set to null</param>
public void Release(ref Frame frame)
{
if (frame == null)
return;
int frameSize = GetNormalizedSize(frame.LengthBuffer);
if (frameSize == -1 || frameSize != frame.LengthBuffer)
return; // if frame is too large for pool or length is non-standard, dispose
lock (_lock)
{
int idx = GetPoolIndex(frameSize, true);
Queue queue = _framePool[idx] as Queue;
if (queue == null)
throw new System.ApplicationException();
frame.ReserveHeader(0); // clear frame
frame.SanityCheck(false);
frame.released = true;
bool ignore = queue.AddFrame(ref frame);
}
frame = null;
}
