public static extern CLError GetKernelWorkGroupInfo(
[In] IntPtr kernel,
[In] IntPtr device,
[In] CLKernelWorkGroupInfoType workGroupInfoType,
[In] IntPtr maxSize,
[Out] void *paramValue,
[Out] IntPtr size);
/// <summary>
/// Resolves kernel work-group information as typed structure value of type <typeparamref name="T"/>
/// </summary>
/// <typeparam name="T">The target type.</typeparam>
/// <param name="kernel">The kernel.</param>
/// <param name="device">The device.</param>
/// <param name="type">The information type.</param>
/// <returns>The resolved value.</returns>
public static T GetKernelWorkGroupInfo <T>(
IntPtr kernel,
IntPtr device,
CLKernelWorkGroupInfoType type)
where T : struct
{
T value = default;
CLException.ThrowIfFailed(NativeMethods.GetKernelWorkGroupInfo(
kernel,
device,
type,
new IntPtr(Interop.SizeOf <T>()),
Unsafe.AsPointer(ref value),
IntPtr.Zero));
return(value);
}
/// <summary>
/// Resolves kernel work-group information as typed array of values of type
/// <typeparamref name="T"/>.
/// </summary>
/// <typeparam name="T">The target type.</typeparam>
/// <param name="kernel">The kernel.</param>
/// <param name="device">The device.</param>
/// <param name="type">The information type.</param>
/// <param name="elements">The desired elements.</param>
public static void GetKernelWorkGroupInfo <T>(
IntPtr kernel,
IntPtr device,
CLKernelWorkGroupInfoType type,
T[] elements)
where T : unmanaged
{
fixed(T *ptr = &elements[0])
{
CLException.ThrowIfFailed(NativeMethods.GetKernelWorkGroupInfo(
kernel,
device,
type,
new IntPtr(Interop.SizeOf <T>() * elements.Length),
ptr,
IntPtr.Zero));
}
}
/// <summary>
/// Resolves kernel work-group information as typed array of values of type <typeparamref name="T"/>.
/// </summary>
/// <typeparam name="T">The target type.</typeparam>
/// <param name="kernel">The kernel.</param>
/// <param name="device">The device.</param>
/// <param name="type">The information type.</param>
/// <param name="elements">The desired elements.</param>
public static void GetKernelWorkGroupInfo <T>(
IntPtr kernel,
IntPtr device,
CLKernelWorkGroupInfoType type,
T[] elements)
where T : struct
{
var handle = GCHandle.Alloc(elements, GCHandleType.Pinned);
try
{
CLException.ThrowIfFailed(NativeMethods.GetKernelWorkGroupInfo(
kernel,
device,
type,
new IntPtr(Interop.SizeOf <T>() * elements.Length),
handle.AddrOfPinnedObject().ToPointer(),
IntPtr.Zero));
}
finally
{
handle.Free();
}
}
