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author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2010-02-21 07:24:53 +0000 |
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committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2010-02-21 07:24:53 +0000 |
commit | 157b6f9695e7f72f2d54b231c19cb4045710ed01 (patch) | |
tree | a856d81bf5f173c207510fdeb7367e218f12b3db /os/kernel/include/scheduler.h | |
parent | a90a90ffcf0f90b2a4b6c24dc5a60e72652549f1 (diff) | |
download | ChibiOS-157b6f9695e7f72f2d54b231c19cb4045710ed01.tar.gz ChibiOS-157b6f9695e7f72f2d54b231c19cb4045710ed01.tar.bz2 ChibiOS-157b6f9695e7f72f2d54b231c19cb4045710ed01.zip |
Updated license dates.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1646 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/kernel/include/scheduler.h')
-rw-r--r-- | os/kernel/include/scheduler.h | 268 |
1 files changed, 134 insertions, 134 deletions
diff --git a/os/kernel/include/scheduler.h b/os/kernel/include/scheduler.h index e6bc69078..ddb7df979 100644 --- a/os/kernel/include/scheduler.h +++ b/os/kernel/include/scheduler.h @@ -1,134 +1,134 @@ -/* - ChibiOS/RT - Copyright (C) 2006-2007 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 scheduler.h - * @brief Scheduler macros and structures. - * - * @addtogroup scheduler - * @{ - */ - -#ifndef _SCHEDULER_H_ -#define _SCHEDULER_H_ - -/** @brief Default thread wakeup low level message.*/ -#define RDY_OK 0 -/** @brief Low level message sent to a thread awakened by a timeout.*/ -#define RDY_TIMEOUT -1 -/** @brief Low level message sent to a thread awakened by a reset operation.*/ -#define RDY_RESET -2 - -#define NOPRIO 0 /**< @brief Ready list header priority. */ -#define IDLEPRIO 1 /**< @brief Idle thread priority. */ -#define LOWPRIO 2 /**< @brief Lowest user priority. */ -#define NORMALPRIO 64 /**< @brief Normal user priority. */ -#define HIGHPRIO 127 /**< @brief Highest user priority. */ -#define ABSPRIO 255 /**< @brief Greatest possible priority. */ - -/** - * @brief Zero time specification for some syscalls with a timeout - * specification. - * @note Not all functions accept @p TIME_IMMEDIATE as timeout parameter, - * see the specific function documentation. - */ -#define TIME_IMMEDIATE ((systime_t)-1) - -/** - * @brief Infinite time specification for all the syscalls with a timeout - * specification. - */ -#define TIME_INFINITE ((systime_t)0) - -/** - * @brief Returns the priority of the first thread on the given ready list. - */ -#define firstprio(rlp) ((rlp)->p_next->p_prio) - -/** - * @extends ThreadsQueue - * - * @brief Ready list header. - */ -typedef struct { - ThreadsQueue r_queue; /**< @brief Threads queue. */ - tprio_t r_prio; /**< @brief This field must be - initialized to zero. */ - struct context p_ctx; /**< @brief Not used, present because - offsets. */ -#if CH_USE_REGISTRY - Thread *p_newer; /**< @brief Newer registry element. */ - Thread *p_older; /**< @brief Older registry element. */ -#endif - /* End of the fields shared with the Thread structure.*/ -#if CH_TIME_QUANTUM > 0 - cnt_t r_preempt; /**< @brief Round robin counter. */ -#endif -#ifndef CH_CURRP_REGISTER_CACHE - Thread *r_current; /**< @brief The currently running - thread. */ -#endif -} ReadyList; - -#if !defined(__DOXYGEN__) -extern ReadyList rlist; -#endif - -#ifdef CH_CURRP_REGISTER_CACHE -register Thread *currp asm(CH_CURRP_REGISTER_CACHE); -#else -#define currp rlist.r_current -#endif - -/* - * Scheduler APIs. - */ -#ifdef __cplusplus -extern "C" { -#endif - void scheduler_init(void); - Thread *chSchReadyI(Thread *tp); - void chSchGoSleepS(tstate_t newstate); - msg_t chSchGoSleepTimeoutS(tstate_t newstate, systime_t time); - void chSchWakeupS(Thread *tp, msg_t msg); - void chSchDoRescheduleI(void); - void chSchRescheduleS(void); - bool_t chSchIsRescRequiredExI(void); - void chSchDoYieldS(void); -#ifdef __cplusplus -} -#endif - -/** - * @brief Determines if yielding is possible. - * @details This function returns @p TRUE if there is a ready thread with - * equal or higher priority. - */ -#define chSchCanYieldS() (firstprio(&rlist.r_queue) >= currp->p_prio) - -/** - * @brief Determines if the current thread must reschedule. - * @details This function returns @p TRUE if there is a ready thread with - * higher priority. - */ -#define chSchIsRescRequiredI() (firstprio(&rlist.r_queue) > currp->p_prio) - -#endif /* _SCHEDULER_H_ */ - -/** @} */ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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 scheduler.h
+ * @brief Scheduler macros and structures.
+ *
+ * @addtogroup scheduler
+ * @{
+ */
+
+#ifndef _SCHEDULER_H_
+#define _SCHEDULER_H_
+
+/** @brief Default thread wakeup low level message.*/
+#define RDY_OK 0
+/** @brief Low level message sent to a thread awakened by a timeout.*/
+#define RDY_TIMEOUT -1
+/** @brief Low level message sent to a thread awakened by a reset operation.*/
+#define RDY_RESET -2
+
+#define NOPRIO 0 /**< @brief Ready list header priority. */
+#define IDLEPRIO 1 /**< @brief Idle thread priority. */
+#define LOWPRIO 2 /**< @brief Lowest user priority. */
+#define NORMALPRIO 64 /**< @brief Normal user priority. */
+#define HIGHPRIO 127 /**< @brief Highest user priority. */
+#define ABSPRIO 255 /**< @brief Greatest possible priority. */
+
+/**
+ * @brief Zero time specification for some syscalls with a timeout
+ * specification.
+ * @note Not all functions accept @p TIME_IMMEDIATE as timeout parameter,
+ * see the specific function documentation.
+ */
+#define TIME_IMMEDIATE ((systime_t)-1)
+
+/**
+ * @brief Infinite time specification for all the syscalls with a timeout
+ * specification.
+ */
+#define TIME_INFINITE ((systime_t)0)
+
+/**
+ * @brief Returns the priority of the first thread on the given ready list.
+ */
+#define firstprio(rlp) ((rlp)->p_next->p_prio)
+
+/**
+ * @extends ThreadsQueue
+ *
+ * @brief Ready list header.
+ */
+typedef struct {
+ ThreadsQueue r_queue; /**< @brief Threads queue. */
+ tprio_t r_prio; /**< @brief This field must be
+ initialized to zero. */
+ struct context p_ctx; /**< @brief Not used, present because
+ offsets. */
+#if CH_USE_REGISTRY
+ Thread *p_newer; /**< @brief Newer registry element. */
+ Thread *p_older; /**< @brief Older registry element. */
+#endif
+ /* End of the fields shared with the Thread structure.*/
+#if CH_TIME_QUANTUM > 0
+ cnt_t r_preempt; /**< @brief Round robin counter. */
+#endif
+#ifndef CH_CURRP_REGISTER_CACHE
+ Thread *r_current; /**< @brief The currently running
+ thread. */
+#endif
+} ReadyList;
+
+#if !defined(__DOXYGEN__)
+extern ReadyList rlist;
+#endif
+
+#ifdef CH_CURRP_REGISTER_CACHE
+register Thread *currp asm(CH_CURRP_REGISTER_CACHE);
+#else
+#define currp rlist.r_current
+#endif
+
+/*
+ * Scheduler APIs.
+ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void scheduler_init(void);
+ Thread *chSchReadyI(Thread *tp);
+ void chSchGoSleepS(tstate_t newstate);
+ msg_t chSchGoSleepTimeoutS(tstate_t newstate, systime_t time);
+ void chSchWakeupS(Thread *tp, msg_t msg);
+ void chSchDoRescheduleI(void);
+ void chSchRescheduleS(void);
+ bool_t chSchIsRescRequiredExI(void);
+ void chSchDoYieldS(void);
+#ifdef __cplusplus
+}
+#endif
+
+/**
+ * @brief Determines if yielding is possible.
+ * @details This function returns @p TRUE if there is a ready thread with
+ * equal or higher priority.
+ */
+#define chSchCanYieldS() (firstprio(&rlist.r_queue) >= currp->p_prio)
+
+/**
+ * @brief Determines if the current thread must reschedule.
+ * @details This function returns @p TRUE if there is a ready thread with
+ * higher priority.
+ */
+#define chSchIsRescRequiredI() (firstprio(&rlist.r_queue) > currp->p_prio)
+
+#endif /* _SCHEDULER_H_ */
+
+/** @} */
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