sortix--sortix/sortix/refcount.cpp

/*******************************************************************************

	COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2012.

	This file is part of Sortix.

	Sortix is free software: you can redistribute it and/or modify it under the
	terms of the GNU General Public License as published by the Free Software
	Foundation, either version 3 of the License, or (at your option) any later
	version.

	Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
	WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
	FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
	details.

	You should have received a copy of the GNU General Public License along with
	Sortix. If not, see <http://www.gnu.org/licenses/>.

	refcount.cpp
	A class that implements reference counting.

*******************************************************************************/

#include <sortix/kernel/platform.h>
#include "refcount.h"

namespace Sortix
{
	Refcounted::Refcounted()
	{
		refcount = 1;
	}

	Refcounted::~Refcounted()
	{
		// It's OK to be deleted if our refcount is 1, it won't mess with any
		// other owners that might need us.
		ASSERT(refcount <= 1);
	}

	void Refcounted::Refer()
	{
		refcount++;
	}

	void Refcounted::Unref()
	{
		if ( !--refcount ) { delete this; }
	}
}