From a5d8c157dfb1df282c1c5f5b79dd82a13f498eb7 Mon Sep 17 00:00:00 2001
From: Anna Henningsen <anna@addaleax.net>
Date: Tue, 22 Jan 2019 23:07:04 +0100
Subject: [PATCH] perf_hooks: clean up GC listeners

Add Environment cleanup hooks to remove GC listeners when the
`Environment` is torn down.
---
 src/node_perf.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/node_perf.cc b/src/node_perf.cc
index 45d66ad5917ab2..b3bbc16a3ebd89 100644
--- a/src/node_perf.cc
+++ b/src/node_perf.cc
@@ -296,6 +296,11 @@ inline void SetupGarbageCollectionTracking(Environment* env) {
                                         static_cast<void*>(env));
   env->isolate()->AddGCEpilogueCallback(MarkGarbageCollectionEnd,
                                         static_cast<void*>(env));
+  env->AddCleanupHook([](void* data) {
+    Environment* env = static_cast<Environment*>(data);
+    env->isolate()->RemoveGCPrologueCallback(MarkGarbageCollectionStart, data);
+    env->isolate()->RemoveGCEpilogueCallback(MarkGarbageCollectionEnd, data);
+  }, env);
 }
 
 // Gets the name of a function