// Copyright (c) 2016-2018 Easy2D - Nomango
// 
// 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 "..\e2dobject.h"

easy2d::Ref::Ref()
{
	// 当对象被创建时，意味着它已经被引用了一次
	ref_count_ = 1;
}

easy2d::Ref::~Ref()
{
}

LONG easy2d::Ref::Retain()
{
	return ::InterlockedIncrement(&ref_count_);
}

LONG easy2d::Ref::Release()
{
	LONG new_count = ::InterlockedDecrement(&ref_count_);

	if (new_count <= 0)
	{
		delete this;
		return 0;
	}

	return new_count;
}

LONG easy2d::Ref::GetRefCount() const
{
	return ref_count_;
}