avr/qmk/lufa - [no description]

diff options

Diffstat (limited to 'Projects/MediaController')

0 files changed, 0 insertions, 0 deletions

/* ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio. This file is part of ChibiOS. ChibiOS 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 3 of the License, or (at your option) any later version. ChibiOS 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, see <http://www.gnu.org/licenses/>. */ /** * @file chmtx.h * @brief Mutexes macros and structures. * * @addtogroup mutexes * @{ */ #ifndef CHMTX_H #define CHMTX_H #if (CH_CFG_USE_MUTEXES == TRUE) || defined(__DOXYGEN__) /*===========================================================================*/ /* Module constants. */ /*===========================================================================*/ /*===========================================================================*/ /* Module pre-compile time settings. */ /*===========================================================================*/ /*===========================================================================*/ /* Derived constants and error checks. */ /*===========================================================================*/ /*===========================================================================*/ /* Module data structures and types. */ /*===========================================================================*/ /** * @brief Type of a mutex structure. */ typedef struct ch_mutex mutex_t; /** * @brief Mutex structure. */ struct ch_mutex { threads_queue_t queue; /**< @brief Queue of the threads sleeping on this mutex. */ thread_t *owner; /**< @brief Owner @p thread_t pointer or @p NULL. */ mutex_t *next; /**< @brief Next @p mutex_t into an owner-list or @p NULL. */ #if (CH_CFG_USE_MUTEXES_RECURSIVE == TRUE) || defined(__DOXYGEN__) cnt_t cnt; /**< @brief Mutex recursion counter. */ #endif }; /*===========================================================================*/ /* Module macros. */ /*===========================================================================*/ /** * @brief Data part of a static mutex initializer. * @details This macro should be used when statically initializing a mutex * that is part of a bigger structure. * * @param[in] name the name of the mutex variable */ #if (CH_CFG_USE_MUTEXES_RECURSIVE == TRUE) || defined(__DOXYGEN__) #define _MUTEX_DATA(name) {_THREADS_QUEUE_DATA(name.queue), NULL, NULL, 0} #else #define _MUTEX_DATA(name) {_THREADS_QUEUE_DATA(name.queue), NULL, NULL} #endif /** * @brief Static mutex initializer. * @details Statically initialized mutexes require no explicit initialization * using @p chMtxInit(). * * @param[in] name the name of the mutex variable */ #define MUTEX_DECL(name) mutex_t name = _MUTEX_DATA(name) /*===========================================================================*/ /* External declarations. */ /*===========================================================================*/ #ifdef __cplusplus extern "C" { #endif void chMtxObjectInit(mutex_t *mp); void chMtxLock(mutex_t *mp); void chMtxLockS(mutex_t *mp); bool chMtxTryLock(mutex_t *mp); bool chMtxTryLockS(mutex_t *mp); void chMtxUnlock(mutex_t *mp); void chMtxUnlockS(mutex_t *mp); void chMtxUnlockAll(void); void chMtxUnlockAllS(void); #ifdef __cplusplus } #endif /*===========================================================================*/ /* Module inline functions. */ /*===========================================================================*/ /** * @brief Returns @p true if the mutex queue contains at least a waiting * thread. * * @param[out] mp pointer to a @p mutex_t structure * @return The mutex queue status. * * @deprecated * @sclass */ static inline bool chMtxQueueNotEmptyS(mutex_t *mp) { chDbgCheckClassS(); return queue_notempty(&mp->queue); } /** * @brief Returns the next mutex in the mutexes stack of the current thread. * * @return A pointer to the next mutex in the stack. * @retval NULL if the stack is empty. * * @sclass */ static inline mutex_t *chMtxGetNextMutexS(void) { return chThdGetSelfX()->mtxlist; } #endif /* CH_CFG_USE_MUTEXES == TRUE */ #endif /* CHMTX_H */ /** @} */


context:
space:
mode: