Diff: source/EventQueue/detail/Thunk.impl.h

Revision:

0:ed0152b5c495

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/EventQueue/detail/Thunk.impl.h	Mon Sep 19 00:59:11 2016 +0000
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2016, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef EVENTQUEUE_DETAIL_THUNK_IMPL_H_
+#define EVENTQUEUE_DETAIL_THUNK_IMPL_H_
+
+#include <new>
+#include "ThunkVTableGenerator.h"
+
+namespace eq {
+
+/**
+ * Thunk constructor Implementation.
+ * Due to the way templates and forwarding work in C++, it was not possible to
+ * provide this implementation in Thunk.h
+ */
+template<typename F>
+Thunk::Thunk(const F& f) :
+	_storage(),
+	_vtable(&detail::ThunkVTableGenerator<F>::vtable) {
+	typedef  __attribute__((unused)) char F_is_too_big_for_the_Thunk[sizeof(F) <= sizeof(_storage) ? 1 : -1];
+	new(_storage.get_storage(0)) F(f);
+}
+
+/**
+ * Specialization for function pointers.
+ * This overload will be chosen when the tyope in input is a reference to a function.
+ * @param  f The function to transform in Thunk.
+ */
+inline Thunk::Thunk(void (*f)()) :
+	_storage(),
+	_vtable(&detail::ThunkVTableGenerator<void(*)()>::vtable) {
+	typedef void(*F)();
+	typedef  __attribute__((unused)) char F_is_too_big_for_the_Thunk[sizeof(F) <= sizeof(_storage) ? 1 : -1];
+	new(_storage.get_storage(0)) F(f);
+}
+
+/**
+ * Thunk empty constructor Implementation.
+ * Due to the way templates and forwarding work in C++, it was not possible to
+ * provide this implementation in Thunk.h
+ */
+inline Thunk::Thunk() :
+	_storage(),
+	_vtable(&detail::ThunkVTableGenerator<void(*)()>::vtable) {
+	typedef void(*F)();
+	typedef  __attribute__((unused)) char F_is_too_big_for_the_Thunk[sizeof(F) <= sizeof(_storage) ? 1 : -1];
+	new(_storage.get_storage(0)) F(empty_thunk);
+}
+
+} // namespace eq
+
+#endif /* EVENTQUEUE_DETAIL_THUNK_IMPL_H_ */