pthreadthreadlocal.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_PTHREADTHREADLOCAL_H
#define LIBMUTH_PTHREADTHREADLOCAL_H

#include <assert.h>
#include <pthread.h>

#ifndef USE_PTHREAD
#error this file must be compiled with -DUSE_PTHREAD
#endif

template<class T> class PthreadThreadLocal {
        private:
                pthread_key_t key;
        public:
                PthreadThreadLocal() {
                                const int r(pthread_key_create(&this->key,
                                                NULL));
                                assert(r == 0);
                        }
                ~PthreadThreadLocal() {
                                const int r(pthread_key_delete(this->key));
                                assert(r == 0);
                        }
                PthreadThreadLocal &operator=(T *v) {
                                const int r(pthread_setspecific(this->key,
                                                static_cast<void*>(v)));
                                assert(r == 0);
                                return *this;
                        }
                T &operator*() {
                                return *(static_cast<T*>(pthread_getspecific(
                                                        this->key)));
                        }
                T &operator*() const {
                                return *(static_cast<T*>(pthread_getspecific(
                                                        this->key)));
                        }
};

#endif

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