#include <kern/proc.h> // struct Process
+#ifndef asm_switch_context
/**
* CPU dependent context switching routines.
*
* 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.
/* 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);
void monitor_rename(Process *proc, const char *name);
#endif /* CONFIG_KERN_MONITOR */
+#if 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_PREEMPT */
+INLINE int preempt_quantum(void)
+{
+ return 0;
+}
+
+INLINE void proc_decQuantum(void)
+{
+}
+
+INLINE void preempt_reset_quantum(void)
+{
+}
+#endif /* CONFIG_KERN_PREEMPT */
+
#endif /* KERN_PROC_P_H */