update lab6 :: deleting timer

labcodes/lab6/kern/schedule/sched.c

@@ -98,79 +98,3 @@ schedule(void) {
     }
     local_intr_restore(intr_flag);
 }
-
-// add timer to timer_list
-void
-add_timer(timer_t *timer) {
-    bool intr_flag;
-    local_intr_save(intr_flag);
-    {
-        assert(timer->expires > 0 && timer->proc != NULL);
-        assert(list_empty(&(timer->timer_link)));
-        list_entry_t *le = list_next(&timer_list);
-        while (le != &timer_list) {
-            timer_t *next = le2timer(le, timer_link);
-            if (timer->expires < next->expires) {
-                next->expires -= timer->expires;
-                break;
-            }
-            timer->expires -= next->expires;
-            le = list_next(le);
-        }
-        list_add_before(le, &(timer->timer_link));
-    }
-    local_intr_restore(intr_flag);
-}
-
-// del timer from timer_list
-void
-del_timer(timer_t *timer) {
-    bool intr_flag;
-    local_intr_save(intr_flag);
-    {
-        if (!list_empty(&(timer->timer_link))) {
-            if (timer->expires != 0) {
-                list_entry_t *le = list_next(&(timer->timer_link));
-                if (le != &timer_list) {
-                    timer_t *next = le2timer(le, timer_link);
-                    next->expires += timer->expires;
-                }
-            }
-            list_del_init(&(timer->timer_link));
-        }
-    }
-    local_intr_restore(intr_flag);
-}
-
-// call scheduler to update tick related info, and check the timer is expired? If expired, then wakup proc
-void
-run_timer_list(void) {
-    bool intr_flag;
-    local_intr_save(intr_flag);
-    {
-        list_entry_t *le = list_next(&timer_list);
-        if (le != &timer_list) {
-            timer_t *timer = le2timer(le, timer_link);
-            assert(timer->expires != 0);
-            timer->expires --;
-            while (timer->expires == 0) {
-                le = list_next(le);
-                struct proc_struct *proc = timer->proc;
-                if (proc->wait_state != 0) {
-                    assert(proc->wait_state & WT_INTERRUPTED);
-                }
-                else {
-                    warn("process %d's wait_state == 0.\n", proc->pid);
-                }
-                wakeup_proc(proc);
-                del_timer(timer);
-                if (le == &timer_list) {
-                    break;
-                }
-                timer = le2timer(le, timer_link);
-            }
-        }
-        sched_class_proc_tick(current);
-    }
-    local_intr_restore(intr_flag);
-}

labcodes/lab6/kern/schedule/sched.h

@@ -9,24 +9,6 @@
 
 struct proc_struct;
 
-typedef struct {
-    unsigned int expires;       //the expire time
-    struct proc_struct *proc;   //the proc wait in this timer. If the expire time is end, then this proc will be scheduled
-    list_entry_t timer_link;    //the timer list
-} timer_t;
-
-#define le2timer(le, member)            \
-to_struct((le), timer_t, member)
-
-// init a timer
-static inline timer_t *
-timer_init(timer_t *timer, struct proc_struct *proc, int expires) {
-    timer->expires = expires;
-    timer->proc = proc;
-    list_init(&(timer->timer_link));
-    return timer;
-}
-
 struct run_queue;
 
 // The introduction of scheduling classes is borrrowed from Linux, and makes the 
@@ -65,9 +47,6 @@ struct run_queue {
 void sched_init(void);
 void wakeup_proc(struct proc_struct *proc);
 void schedule(void);
-void add_timer(timer_t *timer);     // add timer to timer_list
-void del_timer(timer_t *timer);     // del timer from timer_list
-void run_timer_list(void);          // call scheduler to update tick related info, and check the timer is expired? If expired, then wakup proc
 
 #endif /* !__KERN_SCHEDULE_SCHED_H__ */
 

labcodes/lab6/kern/trap/trap.c

@@ -225,12 +225,9 @@ trap_dispatch(struct trapframe *tf) {
          *    Every TICK_NUM cycle, you should set current process's current->need_resched = 1
          */
         /* LAB6 YOUR CODE */
-        /* IMPORTANT FUNCTIONS:
-	     * run_timer_list
-	     *----------------------
-	     * you should update your lab5 code (just add ONE or TWO lines of code):
-         *    Every tick, you should update the system time, iterate the timers, and trigger the timers which are end to call scheduler.
-         *    You can use one funcitons to finish all these things.
+        /* you should upate you lab5 code
+         * IMPORTANT FUNCTIONS:
+	     * sched_class_proc_tick
          */
         break;
     case IRQ_OFFSET + IRQ_COM1:

labcodes/lab7/kern/trap/trap.c

@@ -225,12 +225,14 @@ trap_dispatch(struct trapframe *tf) {
          *    Every TICK_NUM cycle, you should set current process's current->need_resched = 1
          */
         /* LAB6 YOUR CODE */
-        /* IMPORTANT FUNCTIONS:
+        /* you should upate you lab5 code
+         * IMPORTANT FUNCTIONS:
+	     * sched_class_proc_tick
+         */         
+        /* LAB7 YOUR CODE */
+        /* you should upate you lab6 code
+         * IMPORTANT FUNCTIONS:
 	     * run_timer_list
-	     *----------------------
-	     * you should update your lab5 code (just add ONE or TWO lines of code):
-         *    Every tick, you should update the system time, iterate the timers, and trigger the timers which are end to call scheduler.
-         *    You can use one funcitons to finish all these things.
          */
         break;
     case IRQ_OFFSET + IRQ_COM1:

labcodes/lab8/kern/trap/trap.c

@@ -225,12 +225,14 @@ trap_dispatch(struct trapframe *tf) {
          *    Every TICK_NUM cycle, you should set current process's current->need_resched = 1
          */
         /* LAB6 YOUR CODE */
-        /* IMPORTANT FUNCTIONS:
+        /* you should upate you lab5 code
+         * IMPORTANT FUNCTIONS:
+	     * sched_class_proc_tick
+         */         
+        /* LAB7 YOUR CODE */
+        /* you should upate you lab6 code
+         * IMPORTANT FUNCTIONS:
 	     * run_timer_list
-	     *----------------------
-	     * you should update your lab5 code (just add ONE or TWO lines of code):
-         *    Every tick, you should update the system time, iterate the timers, and trigger the timers which are end to call scheduler.
-         *    You can use one funcitons to finish all these things.
          */
         break;
     case IRQ_OFFSET + IRQ_COM1:

labcodes_answer/lab6_result/kern/schedule/sched.c

@@ -99,78 +99,3 @@ schedule(void) {
     local_intr_restore(intr_flag);
 }
 
-// add timer to timer_list
-void
-add_timer(timer_t *timer) {
-    bool intr_flag;
-    local_intr_save(intr_flag);
-    {
-        assert(timer->expires > 0 && timer->proc != NULL);
-        assert(list_empty(&(timer->timer_link)));
-        list_entry_t *le = list_next(&timer_list);
-        while (le != &timer_list) {
-            timer_t *next = le2timer(le, timer_link);
-            if (timer->expires < next->expires) {
-                next->expires -= timer->expires;
-                break;
-            }
-            timer->expires -= next->expires;
-            le = list_next(le);
-        }
-        list_add_before(le, &(timer->timer_link));
-    }
-    local_intr_restore(intr_flag);
-}
-
-// del timer from timer_list
-void
-del_timer(timer_t *timer) {
-    bool intr_flag;
-    local_intr_save(intr_flag);
-    {
-        if (!list_empty(&(timer->timer_link))) {
-            if (timer->expires != 0) {
-                list_entry_t *le = list_next(&(timer->timer_link));
-                if (le != &timer_list) {
-                    timer_t *next = le2timer(le, timer_link);
-                    next->expires += timer->expires;
-                }
-            }
-            list_del_init(&(timer->timer_link));
-        }
-    }
-    local_intr_restore(intr_flag);
-}
-
-// call scheduler to update tick related info, and check the timer is expired? If expired, then wakup proc
-void
-run_timer_list(void) {
-    bool intr_flag;
-    local_intr_save(intr_flag);
-    {
-        list_entry_t *le = list_next(&timer_list);
-        if (le != &timer_list) {
-            timer_t *timer = le2timer(le, timer_link);
-            assert(timer->expires != 0);
-            timer->expires --;
-            while (timer->expires == 0) {
-                le = list_next(le);
-                struct proc_struct *proc = timer->proc;
-                if (proc->wait_state != 0) {
-                    assert(proc->wait_state & WT_INTERRUPTED);
-                }
-                else {
-                    warn("process %d's wait_state == 0.\n", proc->pid);
-                }
-                wakeup_proc(proc);
-                del_timer(timer);
-                if (le == &timer_list) {
-                    break;
-                }
-                timer = le2timer(le, timer_link);
-            }
-        }
-        sched_class_proc_tick(current);
-    }
-    local_intr_restore(intr_flag);
-}

labcodes_answer/lab6_result/kern/schedule/sched.h

@@ -9,24 +9,6 @@
 
 struct proc_struct;
 
-typedef struct {
-    unsigned int expires;       //the expire time
-    struct proc_struct *proc;   //the proc wait in this timer. If the expire time is end, then this proc will be scheduled
-    list_entry_t timer_link;    //the timer list
-} timer_t;
-
-#define le2timer(le, member)            \
-to_struct((le), timer_t, member)
-
-// init a timer
-static inline timer_t *
-timer_init(timer_t *timer, struct proc_struct *proc, int expires) {
-    timer->expires = expires;
-    timer->proc = proc;
-    list_init(&(timer->timer_link));
-    return timer;
-}
-
 struct run_queue;
 
 // The introduction of scheduling classes is borrrowed from Linux, and makes the 
@@ -65,9 +47,6 @@ struct run_queue {
 void sched_init(void);
 void wakeup_proc(struct proc_struct *proc);
 void schedule(void);
-void add_timer(timer_t *timer);     // add timer to timer_list
-void del_timer(timer_t *timer);     // del timer from timer_list
-void run_timer_list(void);          // call scheduler to update tick related info, and check the timer is expired? If expired, then wakup proc
 
 #endif /* !__KERN_SCHEDULE_SCHED_H__ */
 

labcodes_answer/lab6_result/kern/trap/trap.c

@@ -233,7 +233,6 @@ trap_dispatch(struct trapframe *tf) {
          */
         ticks ++;
         assert(current != NULL);
-        run_timer_list();
         break;
     case IRQ_OFFSET + IRQ_COM1:
         c = cons_getc();