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#ifndef __STACKVM_SINGLETON_H__
#define __STACKVM_SINGLETON_H__
#include "mrt/export_mrt.h"
/* M-runtime for c++
* Copyright (C) 2005-2008 Vladimir Menshakov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
namespace mrt {
template <class S> class Accessor {
public:
inline S* operator->() const {
static S * p = S::get_instance();
return p;
}
inline const S* get_const() const {
static S * p = S::get_instance();
return p;
}
};
}
#define SINGLETON(name, class) \
extern const mrt::Accessor<class> name
#define PUBLIC_SINGLETON(e, name, class) \
extern e const mrt::Accessor<class> name
#define DECLARE_SINGLETON(class) \
static class * get_instance()
#define IMPLEMENT_SINGLETON(name, class) \
class * class::get_instance() { \
static class instance; \
return &instance; \
} \
\
const mrt::Accessor<class> name = mrt::Accessor<class>()
#endif
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