suspender_decls.h

/*
 *  Copyright (C) 2006  Helmut Grohne
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef LIBMUTH_SUSPENDER_DECLS_H
#define LIBMUTH_SUSPENDER_DECLS_H

#include "refcounter_decls.h"
#include "lock.h"
#include "microthread.h"

template<class T> class Suspender : public RefCounter {
        private:
                mutable Lock lock;
                Microthread *microthread;
                bool wakened;
                T retval;
                Suspender() : microthread(NULL), wakened(false) {}
        public:
                inline static Suspender &create() { return *new Suspender(); }
                T suspend();
                bool wakeup(const T &rv);
                bool cooperativewakeup(const T &rv);
                inline bool issuspended() const;
                inline bool iswakened() const;
                inline bool iscompleted() const;

};

#endif

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