protected override unsafe void WriteAsync(float* sourcePtr, int sourceBeginIndex, int count, int targetBeginIndex, DataArrayCompletedCallback doneFunc)
{
VerifyIsNotConst();
try
{
Marshal.Copy(new IntPtr(sourcePtr + sourceBeginIndex), InternalManagedArray.InternalArray, targetBeginIndex, count);
doneFunc(null);
}
catch (Exception ex)
{
doneFunc(ex);
}
}
public Task Read(int sourceBeginIndex, int count, float[] targetArray, int targetBeginIndex)
{
Args.Requires(() => sourceBeginIndex, () => sourceBeginIndex >= 0 && sourceBeginIndex < Size);
Args.Requires(() => count, () => count > 0 && count <= Size);
Args.Requires(() => targetArray, () => targetArray != null && targetArray.Length <= Size);
Args.Requires(() => targetBeginIndex, () => targetBeginIndex >= 0 && targetBeginIndex < targetArray.Length);
var compl = new TaskCompletionSource<object>();
var arrayH = new GCHandleRef(GCHandle.Alloc(targetArray, GCHandleType.Pinned));
var doneH = new GCHandleRef();
DataArrayCompletedCallback doneFunc = null;
doneFunc = new DataArrayCompletedCallback(ex =>
{
try
{
if (ex == null) compl.SetResult(null); else compl.SetException(ex);
}
finally
{
arrayH.Handle.Free();
doneH.Handle.Free();
}
});
doneH.Handle = GCHandle.Alloc(doneFunc);
try
{
ReadAsync(sourceBeginIndex, count, (float*)arrayH.Handle.AddrOfPinnedObject(), targetBeginIndex, doneFunc);
return compl.Task;
}
catch
{
arrayH.Handle.Free();
doneH.Handle.Free();
throw;
}
}
protected abstract void ReadAsync(int sourceBeginIndex, int count, float* targetPtr, int targetBeginIndex, DataArrayCompletedCallback doneFunc);
protected abstract void WriteAsync(float* sourcePtr, int sourceBeginIndex, int count, int targetBeginIndex, DataArrayCompletedCallback doneFunc);