X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Ftimer%2Ftimer.h;h=e678f7f7dfcbf78274e89ecbefcdc8e320992f0b;hb=b7cb7dfdf27243696183698b2f82522003cc1216;hp=aeb2aebc5dacb0396fe5ce319c4668812acb9df9;hpb=fe6bc8c530795a6c718f7e8fd1a6643d9f3024a1;p=ccan

diff --git a/ccan/timer/timer.h b/ccan/timer/timer.h
index aeb2aebc..e678f7f7 100644
--- a/ccan/timer/timer.h
+++ b/ccan/timer/timer.h
@@ -44,29 +44,40 @@ void timers_init(struct timers *timers, struct timeabs start);
  */
 void timers_cleanup(struct timers *timers);
 
+/**
+ * timer_init - initialize a timer.
+ * @timer: the timer to initialize
+ *
+ * Example:
+ *	struct timer t;
+ *
+ *	timer_init(&t);
+ */
+void timer_init(struct timer *t);
+
 /**
  * timer_add - insert a timer.
  * @timers: the struct timers
- * @timer: the (uninitialized) timer to add
+ * @timer: the (initialized or timer_del'd) timer to add
  * @when: when @timer expires.
  *
  * This efficiently adds @timer to @timers, to expire @when (rounded to
  * TIMER_GRANULARITY nanoseconds).
  *
  * Example:
- *	struct timer t;
- *
  *	// Timeout in 100ms.
  *	timer_add(&timeouts, &t, timeabs_add(time_now(), time_from_msec(100)));
  */
 void timer_add(struct timers *timers, struct timer *timer, struct timeabs when);
 
 /**
- * timer_del - remove an unexpired timer.
+ * timer_del - remove a timer.
  * @timers: the struct timers
- * @timer: the timer previously added with timer_add()
+ * @timer: the timer
  *
- * This efficiently removes @timer from @timers.
+ * This efficiently removes @timer from @timers, if timer_add() was
+ * called.  It can be called multiple times without bad effect, and
+ * can be called any time after timer_init().
  *
  * Example:
  *	timer_del(&timeouts, &t);
@@ -154,8 +165,12 @@ void timers_dump(const struct timers *timers, FILE *fp);
 struct timers {
 	/* Far in the future. */
 	struct list_head far;
+	/* Current time. */
 	uint64_t base;
+	/* Overall first value. */
 	uint64_t first;
+	/* First value in each level (plus 1 for far list) */
+	uint64_t firsts[(64 + TIMER_LEVEL_BITS-1) / TIMER_LEVEL_BITS + 1];
 
 	struct timer_level *level[(64 + TIMER_LEVEL_BITS-1) / TIMER_LEVEL_BITS];
 };