src: remove BeforeExit callback list

It obscures the fact that there is only a single BeforeExit action.
Just call that statically from `EmitBeforeExit()`.

PR-URL: #33386
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: James M Snell <[email protected]>

Author: bnoordhuis

src/api/hooks.cc

@@ -30,7 +30,10 @@ void AtExit(Environment* env, void (*cb)(void* arg), void* arg) {
 }
 
 void EmitBeforeExit(Environment* env) {
-  env->RunBeforeExitCallbacks();
+  TraceEventScope trace_scope(TRACING_CATEGORY_NODE1(environment),
+                              "BeforeExit", env);
+  if (!env->destroy_async_id_list()->empty())
+    AsyncWrap::DestroyAsyncIdsCallback(env);
 
   HandleScope handle_scope(env->isolate());
   Context::Scope context_scope(env->context());

src/env.cc

@@ -366,13 +366,6 @@ Environment::Environment(IsolateData* isolate_data,
   }
 
   destroy_async_id_list_.reserve(512);
-  BeforeExit(
-      [](void* arg) {
-        Environment* env = static_cast<Environment*>(arg);
-        if (!env->destroy_async_id_list()->empty())
-          AsyncWrap::DestroyAsyncIdsCallback(env);
-      },
-      this);
 
   performance_state_ =
       std::make_unique<performance::PerformanceState>(isolate());
@@ -640,19 +633,6 @@ void Environment::RunCleanup() {
   }
 }
 
-void Environment::RunBeforeExitCallbacks() {
-  TraceEventScope trace_scope(TRACING_CATEGORY_NODE1(environment),
-                              "BeforeExit", this);
-  for (ExitCallback before_exit : before_exit_functions_) {
-    before_exit.cb_(before_exit.arg_);
-  }
-  before_exit_functions_.clear();
-}
-
-void Environment::BeforeExit(void (*cb)(void* arg), void* arg) {
-  before_exit_functions_.push_back(ExitCallback{cb, arg});
-}
-
 void Environment::RunAtExitCallbacks() {
   TraceEventScope trace_scope(TRACING_CATEGORY_NODE1(environment),
                               "AtExit", this);

src/env.h

@@ -1118,8 +1118,6 @@ class Environment : public MemoryRetainer {
                                          const char* name,
                                          v8::FunctionCallback callback);
 
-  void BeforeExit(void (*cb)(void* arg), void* arg);
-  void RunBeforeExitCallbacks();
   void AtExit(void (*cb)(void* arg), void* arg);
   void RunAtExitCallbacks();
 
@@ -1394,7 +1392,6 @@ class Environment : public MemoryRetainer {
     void (*cb_)(void* arg);
     void* arg_;
   };
-  std::list<ExitCallback> before_exit_functions_;
 
   std::list<ExitCallback> at_exit_functions_;