preempt: Implement scheduling priorities

[bertos.git] / bertos / kern / proc_p.h

diff --git a/bertos/kern/proc_p.h b/bertos/kern/proc_p.h
index 0d6a94f153eed4102f2257defa18ed4f36eff9ce..2c914d9e81698d2645507800c406a205407a412b 100644 (file)
--- a/bertos/kern/proc_p.h
+++ b/bertos/kern/proc_p.h
@@ -53,7 +53,11 @@
 
 typedef struct Process
 {
+#if CONFIG_KERN_PRI
+       PriNode      link;        /**< Link Process into scheduler lists */
+#else
        Node         link;        /**< Link Process into scheduler lists */
+#endif
        cpustack_t  *stack;       /**< Per-process SP */
        iptr_t       user_data;   /**< Custom data passed to the process */
 
@@ -105,20 +109,29 @@ extern REGISTER Process   *CurrentProcess;
  */
 extern REGISTER List     ProcReadyList;
 
-
-/**
- * Enqueue a task in the ready list.
- *
- * Always use this macro to instert a process in the ready list, as its
- * might vary to implement a different scheduling algorithms.
- *
- * \note This macro is *NOT* protected against the scheduler.  Access to
- *       this list must be performed with interrupts disabled.
- */
-#define SCHED_ENQUEUE(proc)  do { \
-               LIST_ASSERT_VALID(&ProcReadyList); \
-               ADDTAIL(&ProcReadyList, &(proc)->link); \
-       } while (0)
+#if CONFIG_KERN_PRI
+       /**
+        * Enqueue a task in the ready list.
+        *
+        * Always use this macro to instert a process in the ready list, as its
+        * might vary to implement a different scheduling algorithms.
+        *
+        * \note This macro is *NOT* protected against the scheduler.  Access to
+        *       this list must be performed with interrupts disabled.
+        */
+       #define SCHED_ENQUEUE(proc)  do { \
+                       LIST_ASSERT_VALID(&ProcReadyList); \
+                       LIST_ENQUEUE(&ProcReadyList, &(proc)->link); \
+               } while (0)
+
+#else // !CONFIG_KERN_PRI
+
+       #define SCHED_ENQUEUE(proc)  do { \
+                       LIST_ASSERT_VALID(&ProcReadyList); \
+                       ADDTAIL(&ProcReadyList, &(proc)->link); \
+               } while (0)
+
+#endif // !CONFIG_KERN_PRI
 
 /** Schedule to another process *without* adding the current to the ready list. */
 void proc_schedule(void);