/* * Copyright (c) 2004-2005, Swedish Institute of Computer Science. * All rights reserved.  * * Redistribution and use in source and binary forms, with or without  * modification, are permitted provided that the following conditions  * are met:  * 1. Redistributions of source code must retain the above copyright  *    notice, this list of conditions and the following disclaimer.  * 2. Redistributions in binary form must reproduce the above copyright  *    notice, this list of conditions and the following disclaimer in the  *    documentation and/or other materials provided with the distribution.  * 3. Neither the name of the Institute nor the names of its contributors  *    may be used to endorse or promote products derived from this software  *    without specific prior written permission.  * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF  * SUCH DAMAGE.  * * This file is part of the protothreads library. *  * Author: Adam Dunkels <adam@sics.se> * * $Id: lc.h,v 1.2 2005/02/24 10:36:59 adam Exp $ *//** * \addtogroup pt * @{ *//** * \defgroup lc Local continuations * @{ * * Local continuations form the basis for implementing protothreads. A * local continuation can be <i>set</i> in a specific function to * capture the state of the function. After a local continuation has * been set can be <i>resumed</i> in order to restore the state of the * function at the point where the local continuation was set. * * *//** * \file lc.h * Local continuations * \author * Adam Dunkels <adam@sics.se> * */#ifdef DOXYGEN/** * Initialize a local continuation. * * This operation initializes the local continuation, thereby * unsetting any previously set continuation state. * * \hideinitializer */#define LC_INIT(lc)/** * Set a local continuation. * * The set operation saves the state of the function at the point * where the operation is executed. As far as the set operation is * concerned, the state of the function does <b>not</b> include the * call-stack or local (automatic) variables, but only the program * counter and such CPU registers that needs to be saved. * * \hideinitializer */#define LC_SET(lc)/** * Resume a local continuation. * * The resume operation resumes a previously set local continuation, thus * restoring the state in which the function was when the local * continuation was set. If the local continuation has not been * previously set, the resume operation does nothing. * * \hideinitializer */#define LC_RESUME(lc)/** * Mark the end of local continuation usage. * * The end operation signifies that local continuations should not be * used any more in the function. This operation is not needed for * most implementations of local continuation, but is required by a * few implementations. * * \hideinitializer  */#define LC_END(lc)/** * \var typedef lc_t; * * The local continuation type. * * \hideinitializer */#endif /* DOXYGEN */#ifndef __LC_H__#define __LC_H__#ifdef LC_INCLUDE#include LC_INCLUDE#else#include "lc-switch.h"#endif /* LC_INCLUDE */#endif /* __LC_H__ *//** @} *//** @} */