examples: opencl copy functions now use the type cl_event* instead of void*

examples/filters/custom_mf/custom_interface.c

@@ -40,10 +40,10 @@ static int copy_opencl_to_opencl(void *src_interface, unsigned src_node,
 				 void *dst_interface, unsigned dst_node);
 static int copy_ram_to_opencl_async(void *src_interface, unsigned src_node,
 				    void *dst_interface, unsigned dst_node,
-				    void *event);
+				    cl_event *event);
 static int copy_opencl_to_ram_async(void *src_interface, unsigned src_node,
 				    void *dst_interface, unsigned dst_node,
-				    void *event);
+				    cl_event *event);
 #endif /* !STARPU_USE_OPENCL */
 
 static struct starpu_data_copy_methods custom_copy_data_methods_s =
@@ -477,7 +477,7 @@ static int copy_opencl_to_opencl(void *src_interface, unsigned src_node,
 
 static int copy_ram_to_opencl_async(void *src_interface, unsigned src_node,
 				    void *dst_interface, unsigned dst_node,
-				    void *event)
+				    cl_event *event)
 {
 	ssize_t size;
 	struct custom_data_interface *src_custom, *dst_custom;
@@ -520,7 +520,7 @@ static int copy_ram_to_opencl_async(void *src_interface, unsigned src_node,
 
 static int copy_opencl_to_ram_async(void *src_interface, unsigned src_node,
 				    void *dst_interface, unsigned dst_node,
-				    void *event)
+				    cl_event *event)
 {
 	ssize_t size;
 	struct custom_data_interface *src_custom, *dst_custom;

examples/interface/complex_interface.c

@@ -238,11 +238,10 @@ static int copy_cuda_to_ram_async(void *src_interface, unsigned src_node, void *
 #endif
 
 #ifdef STARPU_USE_OPENCL
-static int copy_ram_to_opencl_async(void *src_interface, unsigned src_node, void *dst_interface, unsigned dst_node, void *_event)
+static int copy_ram_to_opencl_async(void *src_interface, unsigned src_node, void *dst_interface, unsigned dst_node, cl_event *event)
 {
 	struct starpu_complex_interface *src_complex = src_interface;
 	struct starpu_complex_interface *dst_complex = dst_interface;
-	cl_event *event = (cl_event *)_event;
 	cl_int err;
 	int ret;
 
@@ -278,11 +277,10 @@ static int copy_ram_to_opencl(void *src_interface, unsigned src_node, void *dst_
         return copy_ram_to_opencl_async(src_interface, src_node, dst_interface, dst_node, NULL);
 }
 
-static int copy_opencl_to_ram_async(void *src_interface, unsigned src_node, void *dst_interface, unsigned dst_node, void *_event)
+static int copy_opencl_to_ram_async(void *src_interface, unsigned src_node, void *dst_interface, unsigned dst_node, cl_event *event)
 {
 	struct starpu_complex_interface *src_complex = src_interface;
 	struct starpu_complex_interface *dst_complex = dst_interface;
-	cl_event *event = (cl_event *)_event;
 	cl_int err;
 	int ret;