Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

n-api: finalize during second-pass callback #25992

Closed
wants to merge 1 commit into from
Closed

n-api: finalize during second-pass callback #25992

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
15 changes: 15 additions & 0 deletions src/js_native_api_v8.cc
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -281,10 +281,25 @@ class Reference : private Finalizer {
}

private:
// The N-API finalizer callback may make calls into the engine. V8's heap is
// not in a consistent state during the weak callback, and therefore it does
// not support calls back into it. However, it provides a mechanism for adding
// a finalizer which may make calls back into the engine by allowing us to
// attach such a second-pass finalizer from the first pass finalizer. Thus,
// we do that here to ensure that the N-API finalizer callback is free to call
// into the engine.
static void FinalizeCallback(const v8::WeakCallbackInfo<Reference>& data) {
Reference* reference = data.GetParameter();

// The reference must be reset during the first pass.
reference->_persistent.Reset();

data.SetSecondPassCallback(SecondPassCallback);
}

static void SecondPassCallback(const v8::WeakCallbackInfo<Reference>& data) {
Reference* reference = data.GetParameter();

napi_env env = reference->_env;

if (reference->_finalize_callback != nullptr) {
Expand Down