From 154a184c1bcad434f506065a775ae28e39e39b15 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Sun, 16 Aug 2020 20:35:03 +0200
Subject: [PATCH] Browser: Add a debug menu action for triggering a JS garbage
 collection

Triggering a GC this way will print a report afterwards so you can see
how much memory is currently used by the JS heap. :^)
---
 Applications/Browser/Tab.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Applications/Browser/Tab.cpp b/Applications/Browser/Tab.cpp
index 38e8059a61..4c415325d9 100644
--- a/Applications/Browser/Tab.cpp
+++ b/Applications/Browser/Tab.cpp
@@ -361,6 +361,17 @@ Tab::Tab(Type type)
     line_box_borders_action->set_checked(false);
     debug_menu.add_action(line_box_borders_action);
 
+    debug_menu.add_separator();
+    debug_menu.add_action(GUI::Action::create("Collect garbage", { Mod_Ctrl | Mod_Shift, Key_G }, [this](auto&) {
+        if (m_type == Type::InProcessWebView) {
+            if (auto* document = m_page_view->document()) {
+                document->interpreter().heap().collect_garbage(JS::Heap::CollectionType::CollectGarbage, true);
+            }
+        } else {
+            TODO();
+        }
+    }));
+
     auto& bookmarks_menu = m_menubar->add_menu("Bookmarks");
     bookmarks_menu.add_action(WindowActions::the().show_bookmarks_bar_action());