revise a few source files

Author: fs-eire

onnxruntime/core/dll/delay_load_hook.cc

@@ -77,9 +77,13 @@ FARPROC WINAPI delay_load_hook(unsigned dliNotify, PDelayLoadInfo pdli) {
         }
 
         path.resize(path.rfind(L'\\') + 1);
+
+        // Append the name of the DLL. Now `path` is the absolute path to the DLL to load.
         path.append(known_dlls[i].wstr);
 
-        return FARPROC(LoadLibraryExW(path.c_str(), NULL, LOAD_LIBRARY_SEARCH_DEFAULT_DIRS | LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR));
+        // Load the DLL
+        return FARPROC(LoadLibraryExW(path.c_str(), NULL,
+                                      LOAD_LIBRARY_SEARCH_DEFAULT_DIRS | LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR));
       }
     }
   }

onnxruntime/core/providers/webgpu/dll_delay_load_helper.cc

@@ -25,6 +25,7 @@ std::wstring GetCurrentDllDir() {
   GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
                      reinterpret_cast<LPCWSTR>(&GetCurrentDllDir), &moduleHandle);
   if (moduleHandle == nullptr) {
+    // Failed to get the handle of the current module. Returns an empty string.
     return std::wstring{};
   }
 

onnxruntime/test/webgpu/delay_load/main.cc

@@ -23,7 +23,7 @@
 //    │   └── test.exe
 //    └── onnxruntime_webgpu_delay_load_test.exe (this binary)
 //
-//    This folder structure ensures no DLLs are in the same folder as the executable.
+//    This folder structure ensures no DLLs are in the same folder as the executable (test.exe).
 //
 // 2. Launch the test binary from the root folder of the above structure.
 //
@@ -72,7 +72,7 @@ int prepare_main() {
   // copy the test binary to the root folder
   fs::copy_file(exe_full_path, root_folder / L"test.exe");
 
-  // run "onnxruntime_webgpu_delay_load_test.exe --test" from the test root folder
+  // run "test.exe --test" from the test root folder
   fs::current_path(root_folder);
   return _wsystem(L"test.exe --test");
 }