Update vector_addition for new device selector

Author: joeatodd

examples/vector_addition/vector_addition.cpp

@@ -24,17 +24,14 @@
 
 #include <CL/sycl.hpp>
 
-class CUDASelector : public sycl::device_selector {
-public:
-  int operator()(const sycl::device &device) const override {
-    if(device.get_platform().get_backend() == sycl::backend::ext_oneapi_cuda){
+int CUDASelector(sycl::device const & dev){
+  if(dev.get_platform().get_backend() == sycl::backend::ext_oneapi_cuda){
       std::cout << " CUDA device found " << std::endl;
       return 1;
     } else{
       return -1;
     }
-  }
-};
+}
 
 int main(int argc, char *argv[]) {
   constexpr const size_t N = 100000;
@@ -56,7 +53,7 @@ int main(int argc, char *argv[]) {
     }
   }
 
-  sycl::queue myQueue{CUDASelector()};
+  sycl::queue myQueue{CUDASelector};
 
   // Command Group creation
   auto cg = [&](sycl::handler &h) {

examples/vector_addition/vector_addition_usm.cpp

@@ -24,23 +24,20 @@
 
 #include <CL/sycl.hpp>
 
-class CUDASelector : public sycl::device_selector {
-public:
-  int operator()(const sycl::device &device) const override {
-    if(device.get_platform().get_backend() == sycl::backend::ext_oneapi_cuda){
-      std::cout << " CUDA device found " << std::endl;
-      return 1;
-    } else{
-      return -1;
-    }
+int CUDASelector(sycl::device const &dev) {
+  if (dev.get_platform().get_backend() == sycl::backend::ext_oneapi_cuda) {
+    std::cout << " CUDA device found " << std::endl;
+    return 1;
+  } else {
+    return -1;
   }
-};
+}
 
 int main(int argc, char *argv[]) {
   constexpr const size_t n = 100000;
 
   // Create a sycl queue with our CUDASelector
-  sycl::queue myQueue{CUDASelector()};
+  sycl::queue myQueue{CUDASelector};
 
   // Host input vectors
   double *h_a;