Changeset b7398c0 in mainline

Timestamp:

2010-05-25T21:32:32Z (15 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

5df7928

Parents:

a9f1372

Message:

Add interfaces for getting and setting the waitq missed_wakeups.

Location:

kernel/generic

Files:

• include/synch/waitq.h (modified) (1 diff)
• src/synch/waitq.c (modified) (1 diff)

kernel/generic/include/synch/waitq.h

@@ -80 +80 @@
 extern void waitq_interrupt_sleep(struct thread *);
 extern void waitq_unsleep(waitq_t *);
+extern int waitq_count_get(waitq_t *);
+extern void waitq_count_set(waitq_t *, int val);
 
 #endif

kernel/generic/src/synch/waitq.c

@@ -505 +505 @@
 }
 
+/** Get the missed wakeups count.
+ *
+ * @param wq    Pointer to wait queue.
+ * @return      The wait queue's missed_wakeups count.
+ */
+int waitq_count_get(waitq_t *wq)
+{
+        int cnt;
+
+        irq_spinlock_lock(&wq->lock, true);
+        cnt = wq->missed_wakeups;
+        irq_spinlock_unlock(&wq->lock, true);
+
+        return cnt;
+}
+
+/** Set the missed wakeups count.
+ *
+ * @param wq    Pointer to wait queue.
+ * @param val   New value of the missed_wakeups count.
+ */
+void waitq_count_set(waitq_t *wq, int val)
+{
+        irq_spinlock_lock(&wq->lock, true);
+        wq->missed_wakeups = val;
+        irq_spinlock_unlock(&wq->lock, true);
+}
+
 /** @}
  */