From f4be1767a54dd47fbd830a11a1e906829ae02255 Mon Sep 17 00:00:00 2001
From: Anna Henningsen <anna@addaleax.net>
Date: Tue, 4 Dec 2018 12:39:30 +0100
Subject: [PATCH] src: dispose of V8 platform in `process.exit()`

Calling `process.exit()` calls the C `exit()` function, which in turn
calls the destructors of static C++ objects. This can lead to race
conditions with other concurrently executing threads; disposing of all
Worker threads and then the V8 platform instance helps with this
(although it might not be a full solution for all problems of
this kind).

Refs: https://github.com/nodejs/node/issues/24403
Refs: https://github.com/nodejs/node/issues/25007

Backport-PR-URL: https://github.com/nodejs/node/pull/26048
PR-URL: https://github.com/nodejs/node/pull/25061
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
---
 src/env.cc           | 7 +++++--
 src/node.cc          | 4 ++++
 src/node_internals.h | 2 ++
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/env.cc b/src/env.cc
index 8f061f9f83f288..3daf75e13043f6 100644
--- a/src/env.cc
+++ b/src/env.cc
@@ -673,10 +673,13 @@ void Environment::AsyncHooks::grow_async_ids_stack() {
 uv_key_t Environment::thread_local_env = {};
 
 void Environment::Exit(int exit_code) {
-  if (is_main_thread())
+  if (is_main_thread()) {
+    stop_sub_worker_contexts();
+    DisposePlatform();
     exit(exit_code);
-  else
+  } else {
     worker_context_->Exit(exit_code);
+  }
 }
 
 void Environment::stop_sub_worker_contexts() {
diff --git a/src/node.cc b/src/node.cc
index 9fb5ab3b8e1d3d..9390215b1b3065 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -383,6 +383,10 @@ static struct {
 #endif  //  !NODE_USE_V8_PLATFORM || !HAVE_INSPECTOR
 } v8_platform;
 
+void DisposePlatform() {
+  v8_platform.Dispose();
+}
+
 #ifdef __POSIX__
 static const unsigned kMaxSignal = 32;
 #endif
diff --git a/src/node_internals.h b/src/node_internals.h
index 12089bc5f4af62..95b691884ec2b2 100644
--- a/src/node_internals.h
+++ b/src/node_internals.h
@@ -538,6 +538,8 @@ int ThreadPoolWork::CancelWork() {
   return uv_cancel(reinterpret_cast<uv_req_t*>(&work_req_));
 }
 
+void DisposePlatform();
+
 static inline const char* errno_string(int errorno) {
 #define ERRNO_CASE(e)  case e: return #e;
   switch (errorno) {