enqueue_copy for SVM: Accept no-op {src,dest}_offset, byte_count parameters

Author: inducer

pyopencl/__init__.py

@@ -1780,6 +1780,9 @@ def enqueue_copy(queue, dest, src, **kwargs):
             src = SVM(src)
 
         is_blocking = kwargs.pop("is_blocking", True)
+        assert kwargs.pop("src_offset", 0) == 0
+        assert kwargs.pop("dest_offset", 0) == 0
+        assert "byte_count" not in kwargs or kwargs.pop("byte_count") == src._size()
         return _cl._enqueue_svm_memcpy(queue, is_blocking, dest, src, **kwargs)
 
     else:

src/wrap_cl_part_2.cpp

@@ -299,6 +299,7 @@ void pyopencl_expose_part_2(py::module &m)
     typedef svm_arg_wrapper cls;
     py::class_<cls>(m, "SVM", py::dynamic_attr())
       .def(py::init<py::object>())
+      .def("_size", &cls::size)
       ;
   }