node-api: make tsfn accept napi_finalize once more

gabrielschulhof · marco-ippolito · commit f9d95674be94 · 2024-05-02T11:19:19.000+02:00
The thread-safe function's finalizer is not called in conjunction with the garbage collection of a JS value. In fact, it keeps a strong reference to the JS function it is expected to call. Thus, it is safe to make calls that affect GC state from its body. PR-URL: #51801 Reviewed-By: Michael Dawson <midawson@redhat.com> Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
diff --git a/src/node_api.cc b/src/node_api.cc
@@ -1318,12 +1318,10 @@ napi_create_threadsafe_function(napi_env env,
                                 size_t max_queue_size,
                                 size_t initial_thread_count,
                                 void* thread_finalize_data,
-                                node_api_nogc_finalize nogc_thread_finalize_cb,
+                                napi_finalize thread_finalize_cb,
                                 void* context,
                                 napi_threadsafe_function_call_js call_js_cb,
                                 napi_threadsafe_function* result) {
-  napi_finalize thread_finalize_cb =
-      reinterpret_cast<napi_finalize>(nogc_thread_finalize_cb);
   CHECK_ENV_NOT_IN_GC(env);
   CHECK_ARG(env, async_resource_name);
   RETURN_STATUS_IF_FALSE(env, initial_thread_count > 0, napi_invalid_arg);
diff --git a/src/node_api.h b/src/node_api.h
@@ -209,7 +209,7 @@ napi_create_threadsafe_function(napi_env env,
                                 size_t max_queue_size,
                                 size_t initial_thread_count,
                                 void* thread_finalize_data,
-                                node_api_nogc_finalize thread_finalize_cb,
+                                napi_finalize thread_finalize_cb,
                                 void* context,
                                 napi_threadsafe_function_call_js call_js_cb,
                                 napi_threadsafe_function* result);
diff --git a/test/node-api/test_threadsafe_function/test_uncaught_exception.c b/test/node-api/test_threadsafe_function/test_uncaught_exception.c
@@ -16,18 +16,6 @@ static void ThreadSafeFunctionFinalize(napi_env env,
   NODE_API_CALL_RETURN_VOID(env, napi_delete_reference(env, js_func_ref));
 }
 
-static void ThreadSafeFunctionNogcFinalize(node_api_nogc_env env,
-                                           void* data,
-                                           void* hint) {
-#ifdef NAPI_EXPERIMENTAL
-  NODE_API_NOGC_CALL_RETURN_VOID(
-      env,
-      node_api_post_finalizer(env, ThreadSafeFunctionFinalize, data, hint));
-#else
-  ThreadSafeFunctionFinalize(env, data, hint);
-#endif
-}
-
 // Testing calling into JavaScript
 static napi_value CallIntoModule(napi_env env, napi_callback_info info) {
   size_t argc = 4;
@@ -46,7 +34,7 @@ static napi_value CallIntoModule(napi_env env, napi_callback_info info) {
                                                 0,
                                                 1,
                                                 finalize_func,
-                                                ThreadSafeFunctionNogcFinalize,
+                                                ThreadSafeFunctionFinalize,
                                                 NULL,
                                                 NULL,
                                                 &tsfn));
