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Diffstat (limited to 'os/kernel/include/chqueues.h')
| -rw-r--r-- | os/kernel/include/chqueues.h | 369 |
1 files changed, 0 insertions, 369 deletions
diff --git a/os/kernel/include/chqueues.h b/os/kernel/include/chqueues.h deleted file mode 100644 index 507f020d1..000000000 --- a/os/kernel/include/chqueues.h +++ /dev/null @@ -1,369 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT 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/RT 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 chqueues.h
- * @brief I/O Queues macros and structures.
- *
- * @addtogroup io_queues
- * @{
- */
-
-#ifndef _CHQUEUES_H_
-#define _CHQUEUES_H_
-
-#if CH_USE_QUEUES || defined(__DOXYGEN__)
-
-/**
- * @name Queue functions returned status value
- * @{
- */
-#define Q_OK RDY_OK /**< @brief Operation successful. */
-#define Q_TIMEOUT RDY_TIMEOUT /**< @brief Timeout condition. */
-#define Q_RESET RDY_RESET /**< @brief Queue has been reset. */
-#define Q_EMPTY -3 /**< @brief Queue empty. */
-#define Q_FULL -4 /**< @brief Queue full, */
-/** @} */
-
-/**
- * @brief Type of a generic I/O queue structure.
- */
-typedef struct GenericQueue GenericQueue;
-
-/** @brief Queue notification callback type.*/
-typedef void (*qnotify_t)(GenericQueue *qp);
-
-/**
- * @brief Generic I/O queue structure.
- * @details This structure represents a generic Input or Output asymmetrical
- * queue. The queue is asymmetrical because one end is meant to be
- * accessed from a thread context, and thus can be blocking, the other
- * end is accessible from interrupt handlers or from within a kernel
- * lock zone (see <b>I-Locked</b> and <b>S-Locked</b> states in
- * @ref system_states) and is non-blocking.
- */
-struct GenericQueue {
- ThreadsQueue q_waiting; /**< @brief Queue of waiting threads. */
- size_t q_counter; /**< @brief Resources counter. */
- uint8_t *q_buffer; /**< @brief Pointer to the queue buffer.*/
- uint8_t *q_top; /**< @brief Pointer to the first location
- after the buffer. */
- uint8_t *q_wrptr; /**< @brief Write pointer. */
- uint8_t *q_rdptr; /**< @brief Read pointer. */
- qnotify_t q_notify; /**< @brief Data notification callback. */
- void *q_link; /**< @brief Application defined field. */
-};
-
-/**
- * @name Macro Functions
- * @{
- */
-/**
- * @brief Returns the queue's buffer size.
- *
- * @param[in] qp pointer to a @p GenericQueue structure.
- * @return The buffer size.
- *
- * @iclass
- */
-#define chQSizeI(qp) ((size_t)((qp)->q_top - (qp)->q_buffer))
-
-/**
- * @brief Queue space.
- * @details Returns the used space if used on an input queue or the empty
- * space if used on an output queue.
- *
- * @param[in] qp pointer to a @p GenericQueue structure.
- * @return The buffer space.
- *
- * @iclass
- */
-#define chQSpaceI(qp) ((qp)->q_counter)
-
-/**
- * @brief Returns the queue application-defined link.
- * @note This function can be called in any context.
- *
- * @param[in] qp pointer to a @p GenericQueue structure.
- * @return The application-defined link.
- *
- * @special
- */
-#define chQGetLink(qp) ((qp)->q_link)
-/** @} */
-
-/**
- * @extends GenericQueue
- *
- * @brief Type of an input queue structure.
- * @details This structure represents a generic asymmetrical input queue.
- * Writing to the queue is non-blocking and can be performed from
- * interrupt handlers or from within a kernel lock zone (see
- * <b>I-Locked</b> and <b>S-Locked</b> states in @ref system_states).
- * Reading the queue can be a blocking operation and is supposed to
- * be performed by a system thread.
- */
-typedef GenericQueue InputQueue;
-
-/**
- * @name Macro Functions
- * @{
- */
-/**
- * @brief Returns the filled space into an input queue.
- *
- * @param[in] iqp pointer to an @p InputQueue structure
- * @return The number of full bytes in the queue.
- * @retval 0 if the queue is empty.
- *
- * @iclass
- */
-#define chIQGetFullI(iqp) chQSpaceI(iqp)
-
-/**
- * @brief Returns the empty space into an input queue.
- *
- * @param[in] iqp pointer to an @p InputQueue structure
- * @return The number of empty bytes in the queue.
- * @retval 0 if the queue is full.
- *
- * @iclass
- */
-#define chIQGetEmptyI(iqp) (chQSizeI(iqp) - chQSpaceI(iqp))
-
-/**
- * @brief Evaluates to @p TRUE if the specified input queue is empty.
- *
- * @param[in] iqp pointer to an @p InputQueue structure.
- * @return The queue status.
- * @retval FALSE if the queue is not empty.
- * @retval TRUE if the queue is empty.
- *
- * @iclass
- */
-#define chIQIsEmptyI(iqp) ((bool_t)(chQSpaceI(iqp) <= 0))
-
-/**
- * @brief Evaluates to @p TRUE if the specified input queue is full.
- *
- * @param[in] iqp pointer to an @p InputQueue structure.
- * @return The queue status.
- * @retval FALSE if the queue is not full.
- * @retval TRUE if the queue is full.
- *
- * @iclass
- */
-#define chIQIsFullI(iqp) ((bool_t)(((iqp)->q_wrptr == (iqp)->q_rdptr) && \
- ((iqp)->q_counter != 0)))
-
-/**
- * @brief Input queue read.
- * @details This function reads a byte value from an input queue. If the queue
- * is empty then the calling thread is suspended until a byte arrives
- * in the queue.
- *
- * @param[in] iqp pointer to an @p InputQueue structure
- * @return A byte value from the queue.
- * @retval Q_RESET if the queue has been reset.
- *
- * @api
- */
-#define chIQGet(iqp) chIQGetTimeout(iqp, TIME_INFINITE)
-/** @} */
-
-/**
- * @brief Data part of a static input queue initializer.
- * @details This macro should be used when statically initializing an
- * input queue that is part of a bigger structure.
- *
- * @param[in] name the name of the input queue variable
- * @param[in] buffer pointer to the queue buffer area
- * @param[in] size size of the queue buffer area
- * @param[in] inotify input notification callback pointer
- * @param[in] link application defined pointer
- */
-#define _INPUTQUEUE_DATA(name, buffer, size, inotify, link) { \
- _THREADSQUEUE_DATA(name), \
- 0, \
- (uint8_t *)(buffer), \
- (uint8_t *)(buffer) + (size), \
- (uint8_t *)(buffer), \
- (uint8_t *)(buffer), \
- (inotify), \
- (link) \
-}
-
-/**
- * @brief Static input queue initializer.
- * @details Statically initialized input queues require no explicit
- * initialization using @p chIQInit().
- *
- * @param[in] name the name of the input queue variable
- * @param[in] buffer pointer to the queue buffer area
- * @param[in] size size of the queue buffer area
- * @param[in] inotify input notification callback pointer
- * @param[in] link application defined pointer
- */
-#define INPUTQUEUE_DECL(name, buffer, size, inotify, link) \
- InputQueue name = _INPUTQUEUE_DATA(name, buffer, size, inotify, link)
-
-/**
- * @extends GenericQueue
- *
- * @brief Type of an output queue structure.
- * @details This structure represents a generic asymmetrical output queue.
- * Reading from the queue is non-blocking and can be performed from
- * interrupt handlers or from within a kernel lock zone (see
- * <b>I-Locked</b> and <b>S-Locked</b> states in @ref system_states).
- * Writing the queue can be a blocking operation and is supposed to
- * be performed by a system thread.
- */
-typedef GenericQueue OutputQueue;
-
-/**
- * @name Macro Functions
- * @{
- */
-/**
- * @brief Returns the filled space into an output queue.
- *
- * @param[in] oqp pointer to an @p OutputQueue structure
- * @return The number of full bytes in the queue.
- * @retval 0 if the queue is empty.
- *
- * @iclass
- */
-#define chOQGetFullI(oqp) (chQSizeI(oqp) - chQSpaceI(oqp))
-
-/**
- * @brief Returns the empty space into an output queue.
- *
- * @param[in] oqp pointer to an @p OutputQueue structure
- * @return The number of empty bytes in the queue.
- * @retval 0 if the queue is full.
- *
- * @iclass
- */
-#define chOQGetEmptyI(oqp) chQSpaceI(oqp)
-
-/**
- * @brief Evaluates to @p TRUE if the specified output queue is empty.
- *
- * @param[in] oqp pointer to an @p OutputQueue structure.
- * @return The queue status.
- * @retval FALSE if the queue is not empty.
- * @retval TRUE if the queue is empty.
- *
- * @iclass
- */
-#define chOQIsEmptyI(oqp) ((bool_t)(((oqp)->q_wrptr == (oqp)->q_rdptr) && \
- ((oqp)->q_counter != 0)))
-
-/**
- * @brief Evaluates to @p TRUE if the specified output queue is full.
- *
- * @param[in] oqp pointer to an @p OutputQueue structure.
- * @return The queue status.
- * @retval FALSE if the queue is not full.
- * @retval TRUE if the queue is full.
- *
- * @iclass
- */
-#define chOQIsFullI(oqp) ((bool_t)(chQSpaceI(oqp) <= 0))
-
-/**
- * @brief Output queue write.
- * @details This function writes a byte value to an output queue. If the queue
- * is full then the calling thread is suspended until there is space
- * in the queue.
- *
- * @param[in] oqp pointer to an @p OutputQueue structure
- * @param[in] b the byte value to be written in the queue
- * @return The operation status.
- * @retval Q_OK if the operation succeeded.
- * @retval Q_RESET if the queue has been reset.
- *
- * @api
- */
-#define chOQPut(oqp, b) chOQPutTimeout(oqp, b, TIME_INFINITE)
- /** @} */
-
-/**
- * @brief Data part of a static output queue initializer.
- * @details This macro should be used when statically initializing an
- * output queue that is part of a bigger structure.
- *
- * @param[in] name the name of the output queue variable
- * @param[in] buffer pointer to the queue buffer area
- * @param[in] size size of the queue buffer area
- * @param[in] onotify output notification callback pointer
- * @param[in] link application defined pointer
- */
-#define _OUTPUTQUEUE_DATA(name, buffer, size, onotify, link) { \
- _THREADSQUEUE_DATA(name), \
- (size), \
- (uint8_t *)(buffer), \
- (uint8_t *)(buffer) + (size), \
- (uint8_t *)(buffer), \
- (uint8_t *)(buffer), \
- (onotify), \
- (link) \
-}
-
-/**
- * @brief Static output queue initializer.
- * @details Statically initialized output queues require no explicit
- * initialization using @p chOQInit().
- *
- * @param[in] name the name of the output queue variable
- * @param[in] buffer pointer to the queue buffer area
- * @param[in] size size of the queue buffer area
- * @param[in] onotify output notification callback pointer
- * @param[in] link application defined pointer
- */
-#define OUTPUTQUEUE_DECL(name, buffer, size, onotify, link) \
- OutputQueue name = _OUTPUTQUEUE_DATA(name, buffer, size, onotify, link)
-
-#ifdef __cplusplus
-extern "C" {
-#endif
- void chIQInit(InputQueue *iqp, uint8_t *bp, size_t size, qnotify_t infy,
- void *link);
- void chIQResetI(InputQueue *iqp);
- msg_t chIQPutI(InputQueue *iqp, uint8_t b);
- msg_t chIQGetTimeout(InputQueue *iqp, systime_t time);
- size_t chIQReadTimeout(InputQueue *iqp, uint8_t *bp,
- size_t n, systime_t time);
-
- void chOQInit(OutputQueue *oqp, uint8_t *bp, size_t size, qnotify_t onfy,
- void *link);
- void chOQResetI(OutputQueue *oqp);
- msg_t chOQPutTimeout(OutputQueue *oqp, uint8_t b, systime_t time);
- msg_t chOQGetI(OutputQueue *oqp);
- size_t chOQWriteTimeout(OutputQueue *oqp, const uint8_t *bp,
- size_t n, systime_t time);
-#ifdef __cplusplus
-}
-#endif
-#endif /* CH_USE_QUEUES */
-
-#endif /* _CHQUEUES_H_ */
-
-/** @} */
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