Method ~CSharpInstance

modules/mono/csharp_script.cpp:1997–2058

}

CSharpInstance::~CSharpInstance() {
	destructing_script_instance = true;

	// Must make sure event signals are not left dangling
	disconnect_event_signals();

	if (!gchandle.is_released()) {
		if (!predelete_notified && !ref_dying) {
			// This destructor is not called from the owners destructor.
			// This could be being called from the owner's set_script_instance method,
			// meaning this script is being replaced with another one. If this is the case,
			// we must call Dispose here, because Dispose calls owner->set_script_instance(nullptr)
			// and that would mess up with the new script instance if called later.

			GDMonoCache::managed_callbacks.CSharpInstanceBridge_CallDispose(
					gchandle.get_intptr(), /* okIfNull */ true);
		}

		gchandle.release(); // Make sure the gchandle is released
	}

	// If not being called from the owner's destructor, and we still hold a reference to the owner
	if (base_ref_counted && !ref_dying && owner && unsafe_referenced) {
		// The owner's script or script instance is being replaced (or removed)

		// Transfer ownership to an "instance binding"

		RefCounted *rc_owner = static_cast<RefCounted *>(owner);

		// We will unreference the owner before referencing it again, so we need to keep it alive
		Ref<RefCounted> scope_keep_owner_alive(rc_owner);
		(void)scope_keep_owner_alive;

		// Unreference the owner here, before the new "instance binding" references it.
		// Otherwise, the unsafe reference debug checks will incorrectly detect a bug.
		bool die = _unreference_owner_unsafe();
		CRASH_COND(die); // `owner_keep_alive` holds a reference, so it can't die

		void *data = CSharpLanguage::get_instance_binding_with_setup(owner);
		CRASH_COND(data == nullptr);
		CSharpScriptBinding &script_binding = ((RBMap<Object *, CSharpScriptBinding>::Element *)data)->get();
		CRASH_COND(!script_binding.inited);

#ifdef DEBUG_ENABLED
		// The "instance binding" holds a reference so the refcount should be at least 2 before `scope_keep_owner_alive` goes out of scope
		CRASH_COND(rc_owner->get_reference_count() <= 1);
#endif // DEBUG_ENABLED
	}

	if (script.is_valid() && owner) {
		MutexLock lock(CSharpLanguage::get_singleton()->script_instances_mutex);

#ifdef DEBUG_ENABLED
		// CSharpInstance must not be created unless it's going to be added to the list for sure
		HashSet<Object *>::Iterator match = script->instances.find(owner);
		CRASH_COND(!match);
		script->instances.remove(match);
#else