180 lines
6.5 KiB
C
180 lines
6.5 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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/**
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* @file chglobal.h
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* @brief Data structures with global scope header.
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*
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* @addtogroup global
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*/
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#ifndef _CHGLOBAL_H_
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#define _CHGLOBAL_H_
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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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/*===========================================================================*/
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/* Module data structures and types. */
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/*===========================================================================*/
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/**
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* @brief Generic threads single link list, it works like a stack.
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*/
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typedef struct {
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thread_t *p_next; /**< @brief Next in the list/queue. */
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} threads_list_t;
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/**
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* @extends threads_list_t
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*
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* @brief Generic threads bidirectional linked list header and element.
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*/
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typedef struct {
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thread_t *p_next; /**< @brief Next in the list/queue. */
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thread_t *p_prev; /**< @brief Previous in the queue. */
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} threads_queue_t;
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/**
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* @extends threads_queue_t
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*
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* @brief Ready list header.
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*/
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typedef struct {
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threads_queue_t r_queue; /**< @brief Threads queue. */
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tprio_t r_prio; /**< @brief This field must be
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initialized to zero. */
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struct context r_ctx; /**< @brief Not used, present because
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offsets. */
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#if CH_CFG_USE_REGISTRY || defined(__DOXYGEN__)
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thread_t *r_newer; /**< @brief Newer registry element. */
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thread_t *r_older; /**< @brief Older registry element. */
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#endif
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/* End of the fields shared with the thread_t structure.*/
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thread_t *r_current; /**< @brief The currently running
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thread. */
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} ready_list_t;
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/**
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* @brief Virtual timers list header.
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* @note The timers list is implemented as a double link bidirectional list
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* in order to make the unlink time constant, the reset of a virtual
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* timer is often used in the code.
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*/
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typedef struct {
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virtual_timer_t *vt_next; /**< @brief Next timer in the delta
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list. */
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virtual_timer_t *vt_prev; /**< @brief Last timer in the delta
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list. */
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systime_t vt_delta; /**< @brief Must be initialized to -1. */
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#if CH_CFG_TIMEDELTA == 0 || defined(__DOXYGEN__)
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volatile systime_t vt_systime; /**< @brief System Time counter. */
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#endif
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#if CH_CFG_TIMEDELTA > 0 || defined(__DOXYGEN__)
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/**
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* @brief System time of the last tick event.
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*/
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systime_t vt_lasttime;/**< @brief System time of the last
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tick event. */
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#endif
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} virtual_timers_list_t;
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/**
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* @brief System data structure.
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* @note This structure contain all the data areas used by the OS except
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* stacks.
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*/
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typedef struct ch_system {
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/**
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* @brief Ready list header.
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*/
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ready_list_t rlist;
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/**
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* @brief Virtual timers delta list header.
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*/
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virtual_timers_list_t vtlist;
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#if CH_CFG_USE_TM || defined(__DOXYGEN__)
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/**
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* @brief Measurement calibration value.
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*/
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rtcnt_t measurement_offset;
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#endif
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#if CH_DBG_STATISTICS || defined(__DOXYGEN__)
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/**
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* @brief Global kernel statistics.
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*/
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kernel_stats_t kernel_stats;
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#endif
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#if CH_DBG_ENABLED || defined(__DOXYGEN__)
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/**
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* @brief Pointer to the panic message.
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* @details This pointer is meant to be accessed through the debugger, it is
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* written once and then the system is halted.
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*/
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const char *dbg_panic_msg;
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#endif
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#if CH_DBG_SYSTEM_STATE_CHECK || defined(__DOXYGEN__)
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/**
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* @brief ISR nesting level.
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*/
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cnt_t dbg_isr_cnt;
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/**
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* @brief Lock nesting level.
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*/
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cnt_t dbg_lock_cnt;
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#endif
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#if CH_DBG_ENABLE_TRACE || defined(__DOXYGEN__)
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/**
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* @brief Public trace buffer.
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*/
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ch_trace_buffer_t dbg_trace_buffer;
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#endif
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} ch_system_t;
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/*===========================================================================*/
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/* Module macros. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#if !defined(__DOXYGEN__)
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extern ch_system_t ch;
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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 /* _CHGLOBAL_H_ */
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/** @} */
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