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99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012,2013 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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---
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A special exception to the GPL can be applied should you wish to distribute
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a combined work that includes ChibiOS/RT, without being obliged to provide
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the source code for any proprietary components. See the file exception.txt
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for full details of how and when the exception can be applied.
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*/
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/*
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Concepts and parts of this file have been contributed by Leon Woestenberg.
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*/
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/**
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* @file chcond.h
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* @brief Condition Variables macros and structures.
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*
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* @addtogroup condvars
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* @{
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*/
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#ifndef _CHCOND_H_
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#define _CHCOND_H_
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#if CH_USE_CONDVARS || defined(__DOXYGEN__)
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/*
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* Module dependencies check.
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*/
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#if !CH_USE_MUTEXES
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#error "CH_USE_CONDVARS requires CH_USE_MUTEXES"
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#endif
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/**
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* @brief CondVar structure.
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*/
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typedef struct CondVar {
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ThreadsQueue c_queue; /**< @brief CondVar threads queue.*/
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} CondVar;
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#ifdef __cplusplus
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extern "C" {
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#endif
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void chCondInit(CondVar *cp);
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void chCondSignal(CondVar *cp);
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void chCondSignalI(CondVar *cp);
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void chCondBroadcast(CondVar *cp);
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void chCondBroadcastI(CondVar *cp);
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msg_t chCondWait(CondVar *cp);
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msg_t chCondWaitS(CondVar *cp);
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#if CH_USE_CONDVARS_TIMEOUT
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msg_t chCondWaitTimeout(CondVar *cp, systime_t time);
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msg_t chCondWaitTimeoutS(CondVar *cp, systime_t time);
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#endif
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#ifdef __cplusplus
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}
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#endif
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/**
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* @brief Data part of a static condition variable initializer.
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* @details This macro should be used when statically initializing a condition
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* variable that is part of a bigger structure.
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*
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* @param[in] name the name of the condition variable
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*/
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#define _CONDVAR_DATA(name) {_THREADSQUEUE_DATA(name.c_queue)}
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/**
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* @brief Static condition variable initializer.
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* @details Statically initialized condition variables require no explicit
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* initialization using @p chCondInit().
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*
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* @param[in] name the name of the condition variable
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*/
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#define CONDVAR_DECL(name) CondVar name = _CONDVAR_DATA(name)
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#endif /* CH_USE_CONDVARS */
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#endif /* _CHCOND_H_ */
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/** @} */
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