uloop: add uloop_timeout_remaining64

This uses the same return type as tv_diff so we don't need to check for
integer overflow.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Acked-by: Jo-Philipp Wich <jo@mein.io>
Acked-by: John Crispin <john@phrozen.org>

uloop.c

@@ -338,6 +338,18 @@ int uloop_timeout_remaining(struct uloop_timeout *timeout)
 		return (int)td;
 }
 
+int64_t uloop_timeout_remaining64(struct uloop_timeout *timeout)
+{
+	struct timeval now;
+
+	if (!timeout->pending)
+		return -1;
+
+	uloop_gettime(&now);
+
+	return tv_diff(&timeout->time, &now);
+}
+
 int uloop_process_add(struct uloop_process *p)
 {
 	struct uloop_process *tmp;

uloop.h

@@ -93,6 +93,7 @@ int uloop_timeout_add(struct uloop_timeout *timeout);
 int uloop_timeout_set(struct uloop_timeout *timeout, int msecs);
 int uloop_timeout_cancel(struct uloop_timeout *timeout);
 int uloop_timeout_remaining(struct uloop_timeout *timeout);
+int64_t uloop_timeout_remaining64(struct uloop_timeout *timeout);
 
 int uloop_process_add(struct uloop_process *p);
 int uloop_process_delete(struct uloop_process *p);