From 6a1b82df2b9c176c46be3fd89ad78184a5a4f55c Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Sat, 2 Oct 2021 16:35:55 +0200
Subject: LibJS: Put zombie cell tracking code behind a compile-time flag

Since this is a debug-only feature, let's not have it impact GC marking
performance when you don't need it.
---
 Userland/Libraries/LibJS/Runtime/FinalizationRegistry.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'Userland/Libraries/LibJS/Runtime/FinalizationRegistry.h')

diff --git a/Userland/Libraries/LibJS/Runtime/FinalizationRegistry.h b/Userland/Libraries/LibJS/Runtime/FinalizationRegistry.h
index 6affdcd6a3..681df05c3b 100644
--- a/Userland/Libraries/LibJS/Runtime/FinalizationRegistry.h
+++ b/Userland/Libraries/LibJS/Runtime/FinalizationRegistry.h
@@ -34,7 +34,13 @@ public:
 
 private:
     virtual void visit_edges(Visitor& visitor) override;
-    virtual void did_become_zombie() override { deregister(); }
+
+#ifdef JS_TRACK_ZOMBIE_CELLS
+    virtual void did_become_zombie() override
+    {
+        deregister();
+    }
+#endif
 
     FunctionObject* m_cleanup_callback { nullptr };
 
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