/// <summary>
/// Retrieves the specified information about the OpenCL memory object.
/// </summary>
/// <typeparam name="T">
/// The type of the data that is to be returned.</param>
/// <param name="memoryObjectInformation">The kind of information that is to be retrieved.</param>
/// <exception cref="OpenClException">
/// If the information could not be retrieved, then an <see cref="OpenClException" />
/// is thrown.
/// </exception>
/// <returns>Returns the specified information.</returns>
private T GetMemoryObjectInformation <T>(MemoryObjectInformation memoryObjectInformation)
{
// Retrieves the size of the return value in bytes, this is used to later get the full information
Result result = MemoryNativeApi.GetMemoryObjectInformation(
Handle,
memoryObjectInformation,
UIntPtr.Zero,
null,
out UIntPtr returnValueSize
);
if (result != Result.Success)
{
throw new OpenClException("The memory object information could not be retrieved.", result);
}
// Allocates enough memory for the return value and retrieves it
byte[] output = new byte[returnValueSize.ToUInt32()];
result = MemoryNativeApi.GetMemoryObjectInformation(
Handle,
memoryObjectInformation,
new UIntPtr((uint)output.Length),
output,
out returnValueSize
);
if (result != Result.Success)
{
throw new OpenClException("The memory object information could not be retrieved.", result);
}
// Returns the output
return(InteropConverter.To <T>(output));
}
public static extern Result GetMemoryObjectInformation(
[In] IntPtr memoryObject,
[In][MarshalAs(UnmanagedType.U4)] MemoryObjectInformation parameterName,
[In] UIntPtr parameterValueSize,
[Out] byte[] parameterValue,
[Out] out UIntPtr parameterValueSizeReturned
);
