1 files changed, 77 insertions, 0 deletions
diff --git a/modules/mono/mono_gc_handle.cpp b/modules/mono/mono_gc_handle.cpp
new file mode 100644
index 0000000000..d3ad968135
--- /dev/null
+++ b/modules/mono/mono_gc_handle.cpp
@@ -0,0 +1,77 @@
+/*************************************************************************/
+/*  mono_gc_handle.cpp                                                   */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#include "mono_gc_handle.h"
+
+#include "mono_gd/gd_mono.h"
+
+uint32_t MonoGCHandle::make_strong_handle(MonoObject *p_object) {
+
+	return mono_gchandle_new(
+			p_object,
+			false /* do not pin the object */
+			);
+}
+
+uint32_t MonoGCHandle::make_weak_handle(MonoObject *p_object) {
+
+	return mono_gchandle_new_weakref(
+			p_object,
+			true /* track_resurrection: allows us to invoke _notification(NOTIFICATION_PREDELETE) while disposing */
+			);
+}
+
+Ref<MonoGCHandle> MonoGCHandle::create_strong(MonoObject *p_object) {
+
+	return memnew(MonoGCHandle(make_strong_handle(p_object)));
+}
+
+Ref<MonoGCHandle> MonoGCHandle::create_weak(MonoObject *p_object) {
+
+	return memnew(MonoGCHandle(make_weak_handle(p_object)));
+}
+
+void MonoGCHandle::release() {
+
+	if (!released && GDMono::get_singleton()->is_runtime_initialized()) {
+		mono_gchandle_free(handle);
+		released = true;
+	}
+}
+
+MonoGCHandle::MonoGCHandle(uint32_t p_handle) {
+
+	released = false;
+	handle = p_handle;
+}
+
+MonoGCHandle::~MonoGCHandle() {
+
+	release();
+}