public Event EnqueueReadBuffer <T>(Mem <T> buffer, bool blockingRead, uint offset, uint length, T[] ptr, Event[] eventWaitList) where T : struct
{
var numEvents = 0;
IntPtr[] events = null;
if (eventWaitList != null)
{
numEvents = eventWaitList.Length;
events = Event.ToIntPtr(eventWaitList);
}
IntPtr result = IntPtr.Zero;
GCHandle gch = GCHandle.Alloc(ptr, GCHandleType.Pinned);
try {
var error = NativeMethods.clEnqueueReadBuffer(
this.handle,
buffer.handle,
blockingRead ? 1u : 0u,
(IntPtr)offset,
(IntPtr)length,
gch.AddrOfPinnedObject(),
(uint)numEvents,
events,
out result);
if (error != ErrorCode.Success)
{
throw new OpenClException(error);
}
}
finally {
gch.Free();
}
return(new Event(result));
}
public Event EnqueueReadBuffer <T>(Mem <T> buffer, bool blockingRead, T[] ptr, Event[] eventWaitList) where T : struct
{
var offset = 0;
var length = buffer.Size;
if (length > (uint)(Marshal.SizeOf <T>() * ptr.Length))
{
throw new ArgumentException(String.Format("Data array is to small: expected length >= {0}, found {1}.", length, Marshal.SizeOf <T>() * ptr.Length));
}
var numEvents = 0;
IntPtr[] events = null;
if (eventWaitList != null)
{
numEvents = eventWaitList.Length;
events = Event.ToIntPtr(eventWaitList);
}
IntPtr result = IntPtr.Zero;
GCHandle gch = GCHandle.Alloc(ptr, GCHandleType.Pinned);
try {
var error = NativeMethods.clEnqueueReadBuffer(
this.handle,
buffer.handle,
blockingRead ? 1u : 0u,
(IntPtr)offset,
// (IntPtr)(Marshal.SizeOf<T>()*ptr.Length),
(IntPtr)length,
gch.AddrOfPinnedObject(),
(uint)numEvents,
events,
out result);
if (error != ErrorCode.Success)
{
throw new OpenClException(error);
}
}
finally {
gch.Free();
}
return(new Event(result));
}