1 files changed, 110 insertions, 0 deletions
diff --git a/os/kernel/include/scheduler.h b/os/kernel/include/scheduler.h
new file mode 100644
index 000000000..648cb7bc5
--- /dev/null
+++ b/os/kernel/include/scheduler.h
@@ -0,0 +1,110 @@
+/*
+    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_
+
+/** Default thread wakeup low level message. */
+#define RDY_OK          0
+/** Low level message sent to a thread awakened by a timeout. */
+#define RDY_TIMEOUT     -1
+/** Low level message sent to a thread awakened by a reset operation. */
+#define RDY_RESET       -2
+
+#define NOPRIO          0               /**< Ready list header priority.*/
+#define IDLEPRIO        1               /**< Idle thread priority.*/
+#define LOWPRIO         2               /**< Lowest user priority.*/
+#define NORMALPRIO      64              /**< Normal user priority.*/
+#define HIGHPRIO        127             /**< Highest user priority.*/
+#define ABSPRIO         255             /**< Greatest possible priority.*/
+
+/**
+ * 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)
+
+/**
+ * Infinite time specification for all the syscalls with a timeout
+ * specification.
+ */
+#define TIME_INFINITE   ((systime_t)0)
+
+/** The priority of the first thread on the given ready list. */
+#define firstprio(rlp)  ((rlp)->p_next->p_prio)
+
+/**
+ * @brief Ready list header.
+ *
+ * @extends ThreadsQueue
+ */
+typedef struct {
+  Thread                *p_next;        /**< Next @p Thread in the ready list.*/
+  Thread                *p_prev;        /**< Previous @p Thread in the ready
+                                             list.*/
+  /* End of the fields shared with the ThreadsQueue structure. */
+  tprio_t               r_prio;         /**< This field must be initialized to
+                                             zero.*/
+  /* End of the fields shared with the Thread structure. */
+#if CH_USE_ROUNDROBIN
+  cnt_t                 r_preempt;      /**< Round robin counter.*/
+#endif
+#ifndef CH_CURRP_REGISTER_CACHE
+  Thread                *r_current;     /**< The currently running thread.*/
+#endif
+} ReadyList;
+
+extern ReadyList rlist;
+
+/*
+ * 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 chSchRescRequiredI(void);
+#ifdef __cplusplus
+}
+#endif
+
+#ifdef CH_CURRP_REGISTER_CACHE
+register Thread *currp asm(CH_CURRP_REGISTER_CACHE);
+#else
+#define currp rlist.r_current
+#endif
+
+#endif /* _SCHEDULER_H_ */
+
+/** @} */