process: use owner_symbol for `_getActive*`

This makes it easier to provide public APIs in the return types
of `process._getActiveHandles()` and `process._getActiveRequests()`.

PR-URL: https://github.com/nodejs/node/pull/22002
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jon Moss <me@jonathanmoss.me>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/async_wrap.cc b/src/async_wrap.cc
index 9d9d03b0fa9..d47c0d6cfb6 100644
--- a/src/async_wrap.cc
+++ b/src/async_wrap.cc
@@ -734,6 +734,27 @@ std::string AsyncWrap::diagnostic_name() const {
       std::to_string(static_cast<int64_t>(async_id_)) + ")";
 }
 
+Local<Object> AsyncWrap::GetOwner() {
+  return GetOwner(env(), object());
+}
+
+Local<Object> AsyncWrap::GetOwner(Environment* env, Local<Object> obj) {
+  v8::EscapableHandleScope handle_scope(env->isolate());
+  CHECK(!obj.IsEmpty());
+
+  v8::TryCatch ignore_exceptions(env->isolate());
+  while (true) {
+    Local<Value> owner;
+    if (!obj->Get(env->context(),
+                  env->owner_symbol()).ToLocal(&owner) ||
+        !owner->IsObject()) {
+      return handle_scope.Escape(obj);
+    }
+
+    obj = owner.As<Object>();
+  }
+}
+
 }  // namespace node
 
 NODE_BUILTIN_MODULE_CONTEXT_AWARE(async_wrap, node::AsyncWrap::Initialize)