/// <summary>
/// Let GC collect the memory area
/// </summary>
private static void Deallocate()
{
if (allocated)
{
ntdRingBufferHandle.Free();
ntdFullRingBufferHandle.Free();
finalCursorHandle.Free();
ntdRingBuffer = null;
ntdFullRingBuffer = null;
nativeTouchDataQueue = null;
allocated = false;
}
}
/// <summary>
/// C# is holding several important memory area for native side to write to.
/// </summary>
private static void AllocateIfNotYet(StartOption startOption)
{
if (!allocated)
{
ntdRingBuffer = new NativeTouchData[startOption.ringBufferSize];
ntdFullRingBuffer = new NativeTouchDataFull[startOption.ringBufferSize];
dekker = new int[3];
finalCursorStorage = new int[1];
ntdRingBufferHandle = GCHandle.Alloc(ntdRingBuffer, GCHandleType.Pinned);
ntdFullRingBufferHandle = GCHandle.Alloc(ntdFullRingBuffer, GCHandleType.Pinned);
finalCursorHandle = GCHandle.Alloc(finalCursorStorage, GCHandleType.Pinned);
dekkerHandle = GCHandle.Alloc(dekker, GCHandleType.Pinned);
nativeTouchDataQueue = new NativeTouchRingBuffer();
activeRingBufferSize = startOption.ringBufferSize;
allocated = true;
}
}