Add noexcept

Author: kingcrimsontianyu

cpp/include/kvikio/file_utils.hpp

@@ -42,7 +42,7 @@ class FileWrapper {
   /**
    * @brief Construct an empty file wrapper object without opening a file.
    */
-  FileWrapper() = default;
+  FileWrapper() noexcept = default;
 
   ~FileWrapper() noexcept;
   FileWrapper(FileWrapper const&)            = delete;
@@ -89,8 +89,8 @@ class CUFileHandleWrapper {
   bool _registered{false};
 
  public:
-  CUFileHandleWrapper() = default;
-  ~CUFileHandleWrapper();
+  CUFileHandleWrapper() noexcept = default;
+  ~CUFileHandleWrapper() noexcept;
   CUFileHandleWrapper(CUFileHandleWrapper const&)            = delete;
   CUFileHandleWrapper& operator=(CUFileHandleWrapper const&) = delete;
   CUFileHandleWrapper(CUFileHandleWrapper&& o) noexcept;
@@ -103,7 +103,7 @@ class CUFileHandleWrapper {
    * @return Return the cuFile error code from handle register. If the handle has already been
    * registered by calling `register_handle()`, return `std::nullopt`.
    */
-  std::optional<CUfileError_t> register_handle(int fd);
+  std::optional<CUfileError_t> register_handle(int fd) noexcept;
 
   /**
    * @brief Check if the handle has been registered.

cpp/src/file_utils.cpp

@@ -64,7 +64,7 @@ void FileWrapper::close() noexcept
 
 int FileWrapper::fd() const noexcept { return _fd; }
 
-CUFileHandleWrapper::~CUFileHandleWrapper() { unregister_handle(); }
+CUFileHandleWrapper::~CUFileHandleWrapper() noexcept { unregister_handle(); }
 
 CUFileHandleWrapper::CUFileHandleWrapper(CUFileHandleWrapper&& o) noexcept
   : _handle{std::exchange(o._handle, {})}, _registered{std::exchange(o._registered, false)}
@@ -78,7 +78,7 @@ CUFileHandleWrapper& CUFileHandleWrapper::operator=(CUFileHandleWrapper&& o) noe
   return *this;
 }
 
-std::optional<CUfileError_t> CUFileHandleWrapper::register_handle(int fd)
+std::optional<CUfileError_t> CUFileHandleWrapper::register_handle(int fd) noexcept
 {
   std::optional<CUfileError_t> error_code;
   if (registered()) { return error_code; }