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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2011-08-13 07:06:02 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2011-08-13 07:06:02 +0000 |
| commit | aaad958769e757093a258cfdd5c75f515534fd7a (patch) | |
| tree | d58c08fc4a4c4b32a7eb8e14d5b58e4ddde70a8e /os/kernel/include | |
| parent | 43752ee8d132fc57028a9ff15156c5bfcd81c013 (diff) | |
| download | ChibiOS-aaad958769e757093a258cfdd5c75f515534fd7a.tar.gz ChibiOS-aaad958769e757093a258cfdd5c75f515534fd7a.tar.bz2 ChibiOS-aaad958769e757093a258cfdd5c75f515534fd7a.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3224 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/kernel/include')
| -rw-r--r-- | os/kernel/include/chschd.h | 39 | ||||
| -rw-r--r-- | os/kernel/include/chsys.h | 15 |
2 files changed, 45 insertions, 9 deletions
diff --git a/os/kernel/include/chschd.h b/os/kernel/include/chschd.h index cd545a05e..0e933e8ba 100644 --- a/os/kernel/include/chschd.h +++ b/os/kernel/include/chschd.h @@ -134,14 +134,14 @@ extern "C" { #if !defined(PORT_OPTIMIZED_WAKEUPS)
void chSchWakeupS(Thread *tp, msg_t msg);
#endif
-#if !defined(PORT_OPTIMIZED_DORESCHEDULEI)
- void chSchDoRescheduleI(void);
-#endif
#if !defined(PORT_OPTIMIZED_RESCHEDULES)
void chSchRescheduleS(void);
#endif
-#if !defined(PORT_OPTIMIZED_ISRESCHREQUIREDEXI)
- bool_t chSchIsRescRequiredExI(void);
+#if !defined(PORT_OPTIMIZED_ISPREEMPTIONREQUIRED)
+ bool_t chSchIsPreemptionRequired(void);
+#endif
+#if !defined(PORT_OPTIMIZED_DORESCHEDULE)
+ void chSchDoReschedule(void);
#endif
#ifdef __cplusplus
}
@@ -179,10 +179,37 @@ extern "C" { #if !defined(PORT_OPTIMIZED_DOYIELDS) || defined(__DOXYGEN__)
#define chSchDoYieldS() { \
if (chSchCanYieldS()) \
- chSchDoRescheduleI(); \
+ chSchDoReschedule(); \
}
#endif /* !defined(PORT_OPTIMIZED_DOYIELDS) */
+/**
+ * @brief Inlineable preemption code.
+ * @details This is the common preemption code, this function must be invoked
+ * exclusively from the port layer.
+ *
+ * @special
+ */
+#if (CH_TIME_QUANTUM > 0) || defined(__DOXYGEN__)
+#define chSchPreemption() { \
+ tprio_t p1 = firstprio(&rlist.r_queue); \
+ tprio_t p2 = currp->p_prio; \
+ if (rlist.r_preempt) { \
+ if (p1 > p2) \
+ chSchDoReschedule(); \
+ } \
+ else { \
+ if (p1 >= p2) \
+ chSchDoReschedule(); \
+ } \
+}
+#else /* CH_TIME_QUANTUM == 0 */
+#define chSchPreemption() { \
+ if (p1 >= p2) \
+ chSchDoReschedule(); \
+}
+#endif /* CH_TIME_QUANTUM == 0 */
+
#endif /* _CHSCHD_H_ */
/** @} */
diff --git a/os/kernel/include/chsys.h b/os/kernel/include/chsys.h index 994b1301f..7c3a77d5c 100644 --- a/os/kernel/include/chsys.h +++ b/os/kernel/include/chsys.h @@ -66,14 +66,15 @@ /**
* @brief Performs a context switch.
- * @note This function should nevel be used from user code directly.
+ * @note Not a user function, it is meant to be invoked by the scheduler
+ * itself or from within the port layer.
*
* @param[in] ntp the thread to be switched in
* @param[in] otp the thread to be switched out
*
* @special
*/
-#define chSysSwitchI(ntp, otp) { \
+#define chSysSwitch(ntp, otp) { \
dbg_trace(otp); \
port_switch(ntp, otp); \
}
@@ -180,6 +181,8 @@ * @brief IRQ handler enter code.
* @note Usually IRQ handlers functions are also declared naked.
* @note On some architectures this macro can be empty.
+ *
+ * @special
*/
#define CH_IRQ_PROLOGUE() { \
PORT_IRQ_PROLOGUE(); \
@@ -190,7 +193,9 @@ * @brief IRQ handler exit code.
* @note Usually IRQ handlers function are also declared naked.
* @note This macro usually performs the final reschedule by using
- * @p chSchRescRequiredI() and @p chSchDoRescheduleI().
+ * @p chSchIsPreemptionRequired() and @p chSchDoReschedule().
+ *
+ * @special
*/
#define CH_IRQ_EPILOGUE() { \
dbg_check_leave_isr(); \
@@ -201,6 +206,8 @@ * @brief Standard normal IRQ handler declaration.
* @note @p id can be a function name or a vector number depending on the
* port implementation.
+ *
+ * @special
*/
#define CH_IRQ_HANDLER(id) PORT_IRQ_HANDLER(id)
@@ -209,6 +216,8 @@ * @note @p id can be a function name or a vector number depending on the
* port implementation.
* @note Not all architectures support fast interrupts.
+ *
+ * @special
*/
#define CH_FAST_IRQ_HANDLER(id) PORT_FAST_IRQ_HANDLER(id)
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