dm: add absolute timer mode

peterfang · wenlingz · commit 0f7535fdbeb9 · 2019-01-23T10:33:28.000+08:00
Allow specifying the initial expiration in absolute time. Tracked-On: #2319 Signed-off-by: Peter Fang <peter.fang@intel.com> Acked-by: Anthony Xu <anthony.xu@intel.com>
diff --git a/devicemodel/core/timer.c b/devicemodel/core/timer.c
@@ -102,7 +102,7 @@ acrn_timer_deinit(struct acrn_timer *timer)
 }
 
 int32_t
-acrn_timer_settime(struct acrn_timer *timer, struct itimerspec *new_value)
+acrn_timer_settime(struct acrn_timer *timer, const struct itimerspec *new_value)
 {
 	if (timer == NULL) {
 		return -1;
@@ -111,6 +111,17 @@ acrn_timer_settime(struct acrn_timer *timer, struct itimerspec *new_value)
 	return timerfd_settime(timer->fd, 0, new_value, NULL);
 }
 
+int32_t
+acrn_timer_settime_abs(struct acrn_timer *timer,
+		const struct itimerspec *new_value)
+{
+	if (timer == NULL) {
+		return -1;
+	}
+
+	return timerfd_settime(timer->fd, TFD_TIMER_ABSTIME, new_value, NULL);
+}
+
 int32_t
 acrn_timer_gettime(struct acrn_timer *timer, struct itimerspec *cur_value)
 {
diff --git a/devicemodel/include/timer.h b/devicemodel/include/timer.h
@@ -19,7 +19,10 @@ acrn_timer_init(struct acrn_timer *timer, void (*cb)(void *), void *param);
 void
 acrn_timer_deinit(struct acrn_timer *timer);
 int32_t
-acrn_timer_settime(struct acrn_timer *timer, struct itimerspec *new_value);
+acrn_timer_settime(struct acrn_timer *timer, const struct itimerspec *new_value);
+int32_t
+acrn_timer_settime_abs(struct acrn_timer *timer,
+		const struct itimerspec *new_value);
 int32_t
 acrn_timer_gettime(struct acrn_timer *timer, struct itimerspec *cur_value);
 

Original file line number	Diff line number	Diff line change
`@@ -102,7 +102,7 @@ acrn_timer_deinit(struct acrn_timer *timer)`
`102`	`102`	`}`
`103`	`103`
`104`	`104`	`int32_t`
`105`		`-acrn_timer_settime(struct acrn_timer timer, struct itimerspec new_value)`
	`105`	`+acrn_timer_settime(struct acrn_timer timer, const struct itimerspec new_value)`
`106`	`106`	`{`
`107`	`107`	`if (timer == NULL) {`
`108`	`108`	`return -1;`
`@@ -111,6 +111,17 @@ acrn_timer_settime(struct acrn_timer timer, struct itimerspec new_value)`
`111`	`111`	`return timerfd_settime(timer->fd, 0, new_value, NULL);`
`112`	`112`	`}`
`113`	`113`
	`114`	`+int32_t`
	`115`	`+acrn_timer_settime_abs(struct acrn_timer *timer,`
	`116`	`+ const struct itimerspec *new_value)`
	`117`	`+{`
	`118`	`+ if (timer == NULL) {`
	`119`	`+ return -1;`
	`120`	`+ }`
	`121`	`+`
	`122`	`+ return timerfd_settime(timer->fd, TFD_TIMER_ABSTIME, new_value, NULL);`
	`123`	`+}`
	`124`	`+`
`114`	`125`	`int32_t`
`115`	`126`	`acrn_timer_gettime(struct acrn_timer timer, struct itimerspec cur_value)`
`116`	`127`	`{`