117 lines
4.4 KiB
C
117 lines
4.4 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio.
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This file is part of ChibiOS.
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ChibiOS 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 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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/*
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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_CFG_USE_CONDVARS == TRUE) || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Module constants. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module pre-compile time settings. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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#if CH_CFG_USE_MUTEXES == FALSE
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#error "CH_CFG_USE_CONDVARS requires CH_CFG_USE_MUTEXES"
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#endif
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/*===========================================================================*/
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/* Module data structures and types. */
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/*===========================================================================*/
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/**
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* @brief condition_variable_t structure.
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*/
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typedef struct condition_variable {
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threads_queue_t queue; /**< @brief Condition variable
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threads queue. */
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} condition_variable_t;
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/*===========================================================================*/
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/* Module macros. */
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/*===========================================================================*/
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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) {_THREADS_QUEUE_DATA(name.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) condition_variable_t name = _CONDVAR_DATA(name)
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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void chCondObjectInit(condition_variable_t *cp);
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void chCondSignal(condition_variable_t *cp);
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void chCondSignalI(condition_variable_t *cp);
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void chCondBroadcast(condition_variable_t *cp);
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void chCondBroadcastI(condition_variable_t *cp);
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msg_t chCondWait(condition_variable_t *cp);
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msg_t chCondWaitS(condition_variable_t *cp);
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#if CH_CFG_USE_CONDVARS_TIMEOUT == TRUE
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msg_t chCondWaitTimeout(condition_variable_t *cp, systime_t time);
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msg_t chCondWaitTimeoutS(condition_variable_t *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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/* Module inline functions. */
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/*===========================================================================*/
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#endif /* CH_CFG_USE_CONDVARS == TRUE */
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#endif /* CHCOND_H */
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/** @} */
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