preempt: thinko: proc->context.uc_stack.ss_size needs to be reduced by the size of...

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

diff --git a/bertos/kern/proc_p.h b/bertos/kern/proc_p.h
index a0191d8301eaf44b4a1689d729f523a1150de725..0d6a94f153eed4102f2257defa18ed4f36eff9ce 100644 (file)
--- a/bertos/kern/proc_p.h
+++ b/bertos/kern/proc_p.h
@@ -34,7 +34,6 @@
  * \brief Internal scheduler structures and definitions for processes.
  *
  * \version $Id$
- *
  * \author Bernie Innocenti <bernie@codewiz.org>
  */
 
@@ -46,7 +45,11 @@
 
 #include <cpu/types.h>        /* for cpu_stack_t */
 
-#include <mware/list.h>
+#include <struct/list.h>
+
+#if CONFIG_KERN_PREEMPTIVE
+       #include <ucontext.h> // XXX
+#endif
 
 typedef struct Process
 {
@@ -59,10 +62,6 @@ typedef struct Process
        sigmask_t    sig_recv;    /**< Received signals */
 #endif
 
-#if CONFIG_KERN_PREEMPTIVE
-       int          forbid_cnt;  /**< Nesting count for proc_forbid()/proc_permit(). */
-#endif
-
 #if CONFIG_KERN_HEAP
        uint16_t     flags;       /**< Flags */
 #endif
@@ -72,6 +71,10 @@ typedef struct Process
        size_t       stack_size;  /**< Size of process stack */
 #endif
 
+#if CONFIG_KERN_PREEMPTIVE
+       ucontext_t   context;
+#endif
+
 #if CONFIG_KERN_MONITOR
        struct ProcMonitor
        {
@@ -110,14 +113,21 @@ extern REGISTER List     ProcReadyList;
  * might vary to implement a different scheduling algorithms.
  *
  * \note This macro is *NOT* protected against the scheduler.  Access to
- *       this list must be protected with a proc_forbid() / proc_premit()
- *       pair, or with SCHED_ATOMIC()
+ *       this list must be performed with interrupts disabled.
  */
-#define SCHED_ENQUEUE(proc)  ADDTAIL(&ProcReadyList, &(proc)->link)
+#define SCHED_ENQUEUE(proc)  do { \
+               LIST_ASSERT_VALID(&ProcReadyList); \
+               ADDTAIL(&ProcReadyList, &(proc)->link); \
+       } while (0)
 
 /** Schedule to another process *without* adding the current to the ready list. */
 void proc_schedule(void);
 
+#if CONFIG_KERN_PREEMPT
+void proc_entry(void (*user_entry)(void));
+void preempt_init(void);
+#endif
+
 #if CONFIG_KERN_MONITOR
        /** Initialize the monitor */
        void monitor_init(void);
@@ -133,4 +143,3 @@ void proc_schedule(void);
 #endif /* CONFIG_KERN_MONITOR */
 
 #endif /* KERN_PROC_P_H */
-