src: remove async_hooks destroy timer handle

Author: addaleax

src/async_wrap.cc

@@ -137,11 +137,7 @@ RetainedObjectInfo* WrapperInfo(uint16_t class_id, Local<Value> wrapper) {
 // end RetainedAsyncInfo
 
 
-static void DestroyAsyncIdsCallback(uv_timer_t* handle) {
-  Environment* env = Environment::from_destroy_async_ids_timer_handle(handle);
-
-  HandleScope handle_scope(env->isolate());
-  Context::Scope context_scope(env->context());
+static void DestroyAsyncIdsCallback(Environment* env, void* data) {
   Local<Function> fn = env->async_hooks_destroy_function();
 
   TryCatch try_catch(env->isolate());
@@ -689,8 +685,7 @@ void AsyncWrap::EmitDestroy(Environment* env, double async_id) {
     return;
 
   if (env->destroy_async_id_list()->empty()) {
-    uv_timer_start(env->destroy_async_ids_timer_handle(),
-                   DestroyAsyncIdsCallback, 0, 0);
+    env->SetImmediate(DestroyAsyncIdsCallback, nullptr);
   }
 
   env->destroy_async_id_list()->push_back(async_id);

src/env-inl.h

@@ -368,15 +368,6 @@ inline uv_idle_t* Environment::immediate_idle_handle() {
   return &immediate_idle_handle_;
 }
 
-inline Environment* Environment::from_destroy_async_ids_timer_handle(
-    uv_timer_t* handle) {
-  return ContainerOf(&Environment::destroy_async_ids_timer_handle_, handle);
-}
-
-inline uv_timer_t* Environment::destroy_async_ids_timer_handle() {
-  return &destroy_async_ids_timer_handle_;
-}
-
 inline void Environment::RegisterHandleCleanup(uv_handle_t* handle,
                                                HandleCleanupCb cb,
                                                void *arg) {

src/env.cc

@@ -102,8 +102,6 @@ void Environment::Start(int argc,
   uv_unref(reinterpret_cast<uv_handle_t*>(&idle_prepare_handle_));
   uv_unref(reinterpret_cast<uv_handle_t*>(&idle_check_handle_));
 
-  uv_timer_init(event_loop(), destroy_async_ids_timer_handle());
-
   auto close_and_finish = [](Environment* env, uv_handle_t* handle, void* arg) {
     handle->data = env;
 
@@ -128,10 +126,6 @@ void Environment::Start(int argc,
       reinterpret_cast<uv_handle_t*>(&idle_check_handle_),
       close_and_finish,
       nullptr);
-  RegisterHandleCleanup(
-      reinterpret_cast<uv_handle_t*>(&destroy_async_ids_timer_handle_),
-      close_and_finish,
-      nullptr);
 
   if (start_profiler_idle_notifier) {
     StartProfilerIdleNotifier();

src/env.h

@@ -564,11 +564,8 @@ class Environment {
   inline uint32_t watched_providers() const;
 
   static inline Environment* from_immediate_check_handle(uv_check_t* handle);
-  static inline Environment* from_destroy_async_ids_timer_handle(
-    uv_timer_t* handle);
   inline uv_check_t* immediate_check_handle();
   inline uv_idle_t* immediate_idle_handle();
-  inline uv_timer_t* destroy_async_ids_timer_handle();
 
   // Register clean-up cb to be called on environment destruction.
   inline void RegisterHandleCleanup(uv_handle_t* handle,
@@ -722,7 +719,6 @@ class Environment {
   IsolateData* const isolate_data_;
   uv_check_t immediate_check_handle_;
   uv_idle_t immediate_idle_handle_;
-  uv_timer_t destroy_async_ids_timer_handle_;
   uv_prepare_t idle_prepare_handle_;
   uv_check_t idle_check_handle_;
 

test/async-hooks/test-signalwrap.js

@@ -66,12 +66,14 @@ function onsigusr2() {
 }
 
 function onsigusr2Again() {
-  checkInvocations(
-    signal1, { init: 1, before: 2, after: 2, destroy: 1 },
-    'signal1: when second SIGUSR2 handler is called');
-  checkInvocations(
-    signal2, { init: 1, before: 1 },
-    'signal2: when second SIGUSR2 handler is called');
+  setImmediate(() => {
+    checkInvocations(
+      signal1, { init: 1, before: 2, after: 2, destroy: 1 },
+      'signal1: when second SIGUSR2 handler is called');
+    checkInvocations(
+      signal2, { init: 1, before: 1 },
+      'signal2: when second SIGUSR2 handler is called');
+  });
 }
 
 process.on('exit', onexit);

test/async-hooks/test-tcpwrap.js

@@ -128,8 +128,10 @@ function onconnection(c) {
 function onserverClosed() {
   checkInvocations(tcp1, { init: 1, before: 1, after: 1, destroy: 1 },
                    'tcp1 when server is closed');
-  checkInvocations(tcp2, { init: 1, before: 2, after: 2, destroy: 1 },
-                   'tcp2 when server is closed');
+  setImmediate(() => {
+    checkInvocations(tcp2, { init: 1, before: 2, after: 2, destroy: 1 },
+                     'tcp2 after server is closed');
+  });
   checkInvocations(tcp3, { init: 1, before: 1, after: 1 },
                    'tcp3 synchronously when server is closed');
   tick(2, () => {