/// <summary>
/// Enqueues a command to unmap a buffer or a <see cref="ComputeImage"/> from the host address space.
/// </summary>
/// <param name="memory"> The <see cref="ComputeMemory"/>. </param>
/// <param name="mappedPtr"> The host address returned by a previous call to <see cref="ComputeCommandQueue.Map"/>. This pointer is <c>IntPtr.Zero</c> after this method returns. </param>
/// <param name="events"> A collection of events that need to complete before this particular command can be executed. If <paramref name="events"/> is not <c>null</c> or read-only a new <see cref="ComputeEvent"/> identifying this command is created and attached to the end of the collection. </param>
public void Unmap(ComputeMemory memory, ref IntPtr mappedPtr, ICollection <ComputeEventBase> events)
{
int eventWaitListSize;
CLEventHandle[] eventHandles = ComputeTools.ExtractHandles(events, out eventWaitListSize);
bool eventsWritable = (events != null && !events.IsReadOnly);
CLEventHandle[] newEventHandle = (eventsWritable) ? new CLEventHandle[1] : null;
ComputeErrorCode error = CL10.EnqueueUnmapMemObject(Handle, memory.Handle, mappedPtr, eventWaitListSize, eventHandles, newEventHandle);
ComputeException.ThrowOnError(error);
mappedPtr = IntPtr.Zero;
if (eventsWritable)
{
events.Add(new ComputeEvent(newEventHandle[0], this));
}
}
/// <summary>
/// Enqueues a command to unmap a buffer or a <see cref="OpenCLImage"/> from the host address space.
/// </summary>
/// <param name="memory"> The <see cref="OpenCLMemory"/>. </param>
/// <param name="mappedPtr"> The host address returned by a previous call to <see cref="OpenCLCommandQueue.Map"/>. This pointer is <c>IntPtr.Zero</c> after this method returns. </param>
/// <param name="events"> A collection of events that need to complete before this particular command can be executed. If <paramref name="events"/> is not <c>null</c> or read-only a new <see cref="OpenCLEvent"/> identifying this command is created and attached to the end of the collection. </param>
public void Unmap(OpenCLMemory memory, ref IntPtr mappedPtr, IReadOnlyList <OpenCLEventBase> events = null, IList <OpenCLEventBase> newEvents = null)
{
int eventWaitListSize;
CLEventHandle[] eventHandles = OpenCLTools.ExtractHandles(events, out eventWaitListSize);
CLEventHandle[] newEventHandle = (newEvents != null) ? new CLEventHandle[1] : null;
OpenCLErrorCode error = CL10.EnqueueUnmapMemObject(Handle, memory.Handle, mappedPtr, eventWaitListSize, eventHandles, newEventHandle);
OpenCLException.ThrowOnError(error);
mappedPtr = IntPtr.Zero;
if (newEvents != null)
{
lock (newEvents)
{
newEvents.Add(new OpenCLEvent(newEventHandle[0], this));
}
}
}