Add C++ get_kernel binding

Author: szymon-zadworny

oneapi-rs-sys/include/kernel-bundle.hpp

@@ -18,6 +18,6 @@
 namespace sycl_shims::kernel_bundle {
 std::unique_ptr<SourceKernelBundle> create_kernel_bundle_from_source(Context const &ctxt,
                                                                      rust::Str source);
-
 std::unique_ptr<ExecutableKernelBundle> build(std::unique_ptr<SourceKernelBundle> &source);
+std::unique_ptr<Kernel> get_kernel(std::unique_ptr<ExecutableKernelBundle> &, rust::Str);
 } // namespace sycl_shims::kernel_bundle

oneapi-rs-sys/src/kernel-bundle-sys.rs

@@ -20,9 +20,12 @@ pub mod ffi {
         #[namespace = "sycl_shims"]
         type ExecutableKernelBundle = crate::types::ffi::ExecutableKernelBundle;
 
+        #[namespace = "sycl_shims"]
+        type Kernel = crate::types::ffi::Kernel;
+
         fn create_kernel_bundle_from_source(ctxt: &Context, source: &str)
             -> UniquePtr<SourceKernelBundle>;
-
         fn build(source: &mut UniquePtr<SourceKernelBundle>) -> UniquePtr<ExecutableKernelBundle>;
+        fn get_kernel(bundle: &mut UniquePtr<ExecutableKernelBundle>, name: &str) -> UniquePtr<Kernel>;
     }
 }

oneapi-rs-sys/src/kernel-bundle.cpp

@@ -24,4 +24,8 @@ std::unique_ptr<SourceKernelBundle> create_kernel_bundle_from_source(Context con
 std::unique_ptr<ExecutableKernelBundle> build(std::unique_ptr<SourceKernelBundle> &source) {
   return std::make_unique<ExecutableKernelBundle>(syclexp::build(*source));
 }
+
+std::unique_ptr<Kernel> get_kernel(std::unique_ptr<ExecutableKernelBundle> &bundle, rust::Str name) {
+  return std::make_unique<Kernel>(bundle->ext_oneapi_get_kernel(static_cast<std::string const&>(name)));
+}
 } // namespace sycl_shims::kernel_bundle

oneapi-rs-sys/src/types-sys.rs

@@ -85,6 +85,7 @@ pub mod ffi {
     impl UniquePtr<Context> {}
     impl UniquePtr<SourceKernelBundle> {}
     impl UniquePtr<ExecutableKernelBundle> {}
+    impl UniquePtr<Kernel> {}
 
     impl Vec<DevicePtr> {}
     impl Vec<PlatformPtr> {}