1 files changed, 15 insertions, 0 deletions
diff --git a/dom/base/nsJSEnvironment.cpp b/dom/base/nsJSEnvironment.cpp
index 1d2eb16885..1397bd25b5 100644
--- a/dom/base/nsJSEnvironment.cpp
+++ b/dom/base/nsJSEnvironment.cpp
@@ -2227,6 +2227,21 @@ void nsJSContext::EnsureStatics() {
       "javascript.options.mem.gc_max_helper_threads",
       (void*)JSGC_MAX_HELPER_THREADS);
 
+  Preferences::RegisterCallbackAndCall(
+      SetMemoryPrefChangedCallbackInt,
+      "javascript.options.mem.nursery_eager_collection_threshold_kb",
+      (void*)JSGC_NURSERY_EAGER_COLLECTION_THRESHOLD_KB);
+
+  Preferences::RegisterCallbackAndCall(
+      SetMemoryPrefChangedCallbackInt,
+      "javascript.options.mem.nursery_eager_collection_threshold_percent",
+      (void*)JSGC_NURSERY_EAGER_COLLECTION_THRESHOLD_PERCENT);
+
+  Preferences::RegisterCallbackAndCall(
+      SetMemoryPrefChangedCallbackInt,
+      "javascript.options.mem.nursery_eager_collection_timeout_ms",
+      (void*)JSGC_NURSERY_EAGER_COLLECTION_TIMEOUT_MS);
+
   nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
   if (!obs) {
     MOZ_CRASH();