Zigbee Protocol Controller
1.6.0
pt.h
Go to the documentation of this file.
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/*
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* Copyright (c) 2004-2005, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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* $Id: pt.h,v 1.3 2008/10/14 12:46:39 nvt-se Exp $
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*/
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#ifndef __PT_H__
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#define __PT_H__
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#include "
sys/lc.h
"
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struct
pt
{
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lc_t
lc
;
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};
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#define PT_WAITING 0
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#define PT_YIELDED 1
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#define PT_EXITED 2
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#define PT_ENDED 3
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#define PT_INIT(pt) LC_INIT((pt)->lc)
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#define PT_THREAD(name_args) char name_args CC_REENTRANT_ARG
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#define PT_BEGIN(pt) { char PT_YIELD_FLAG = 1; LC_RESUME((pt)->lc)
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#define PT_END(pt) LC_END((pt)->lc); PT_YIELD_FLAG = 0; \
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PT_INIT(pt); return PT_ENDED; }
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#define PT_WAIT_UNTIL(pt, condition) \
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do { \
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LC_SET((pt)->lc); \
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if(!(condition)) { \
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return PT_WAITING; \
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} \
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} while(0)
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#define PT_WAIT_WHILE(pt, cond) PT_WAIT_UNTIL((pt), !(cond))
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#define PT_WAIT_THREAD(pt, thread) PT_WAIT_WHILE((pt), PT_SCHEDULE(thread))
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#define PT_SPAWN(pt, child, thread) \
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do { \
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PT_INIT((child)); \
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PT_WAIT_THREAD((pt), (thread)); \
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} while(0)
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#define PT_RESTART(pt) \
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do { \
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PT_INIT(pt); \
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return PT_WAITING; \
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} while(0)
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#define PT_EXIT(pt) \
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do { \
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PT_INIT(pt); \
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return PT_EXITED; \
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} while(0)
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#define PT_SCHEDULE(f) ((f) < PT_EXITED)
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#define PT_YIELD(pt) \
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do { \
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PT_YIELD_FLAG = 0; \
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LC_SET((pt)->lc); \
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if(PT_YIELD_FLAG == 0) { \
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return PT_YIELDED; \
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} \
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} while(0)
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#define PT_YIELD_UNTIL(pt, cond) \
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do { \
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PT_YIELD_FLAG = 0; \
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LC_SET((pt)->lc); \
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if((PT_YIELD_FLAG == 0) || !(cond)) { \
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return PT_YIELDED; \
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} \
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} while(0)
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#endif
/* __PT_H__ */
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lc_t
unsigned short lc_t
Definition:
lc-switch.h:67
lc.h
pt
Definition:
pt.h:54
pt::lc
lc_t lc
Definition:
pt.h:55
components
uic_contiki
core
sys
pt.h
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