X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fkern%2Fproc_p.h;h=975f9b8a0b0e5620da3935868795b35b5170efaf;hb=c37e6a3f6900ec803c2608fb387054247bab88aa;hp=85cb758f9ecfd7472ea540a3547bb2261fa5717b;hpb=f149112c04843df99b2c9e9fd2ef47d9cacae8a4;p=bertos.git

diff --git a/bertos/kern/proc_p.h b/bertos/kern/proc_p.h
index 85cb758f..975f9b8a 100644
--- a/bertos/kern/proc_p.h
+++ b/bertos/kern/proc_p.h
@@ -33,7 +33,6 @@
  *
  * \brief Internal scheduler structures and definitions for processes.
  *
- * \version $Id$
  * \author Bernie Innocenti <bernie@codewiz.org>
  */
 
@@ -50,6 +49,7 @@
 
 #include <kern/proc.h>   // struct Process
 
+#ifndef asm_switch_context
 /**
  * CPU dependent context switching routines.
  *
@@ -57,23 +57,7 @@
  * support routine which usually needs to be written in assembly.
  */
 EXTERN_C void asm_switch_context(cpu_stack_t **new_sp, cpu_stack_t **save_sp);
-
-/*
- * Save context of old process and switch to new process.
-  */
-INLINE void proc_switchTo(Process *next, Process *prev)
-{
-	cpu_stack_t *dummy;
-
-	if (UNLIKELY(next == prev))
-		return;
-	/*
-	 * If there is no old process, we save the old stack pointer into a
-	 * dummy variable that we ignore.  In fact, this happens only when the
-	 * old process has just exited.
-	 */
-	asm_switch_context(&next->stack, prev ? &prev->stack : &dummy);
-}
+#endif
 
 /**
  * \name Flags for Process.flags.
@@ -176,11 +160,8 @@ void proc_entry(void);
 /* Schedule another process *without* adding the current one to the ready list. */
 void proc_switch(void);
 
-/* Low level scheduling routine. */
-void proc_schedule(void);
-
-/* Low level context switch routine. */
-void proc_switchTo(Process *next, Process *prev);
+/* Immediately schedule a particular process bypassing the scheduler. */
+void proc_wakeup(Process *proc);
 
 /* Initialize a scheduler class. */
 void proc_schedInit(void);
@@ -199,4 +180,43 @@ void proc_schedInit(void);
 	void monitor_rename(Process *proc, const char *name);
 #endif /* CONFIG_KERN_MONITOR */
 
+/*
+ * Quantum related macros are used in the
+ * timer module and must be empty when
+ * kernel is disabled.
+ */
+#if (CONFIG_KERN && CONFIG_KERN_PREEMPT)
+INLINE int preempt_quantum(void)
+{
+	extern int _proc_quantum;
+	return _proc_quantum;
+}
+
+INLINE void proc_decQuantum(void)
+{
+	extern int _proc_quantum;
+	if (_proc_quantum > 0)
+		_proc_quantum--;
+}
+
+INLINE void preempt_reset_quantum(void)
+{
+	extern int _proc_quantum;
+	_proc_quantum = CONFIG_KERN_QUANTUM;
+}
+#else /* !(CONFIG_KERN && CONFIG_KERN_PREEMPT) */
+INLINE int preempt_quantum(void)
+{
+	return 0;
+}
+
+INLINE void proc_decQuantum(void)
+{
+}
+
+INLINE void preempt_reset_quantum(void)
+{
+}
+#endif /* (CONFIG_KERN && CONFIG_KERN_PREEMPT) */
+
 #endif /* KERN_PROC_P_H */