uloop: add uloop_timeout_pending() function to determine the remaining time of an active timeout

2 files changed, 13 insertions, 0 deletions

diff --git a/uloop.c b/uloop.c
index 4095d5b..3a62b62 100644
--- a/uloop.c
+++ b/uloop.c
@@ -387,6 +387,18 @@ int uloop_timeout_cancel(struct uloop_timeout *timeout)
 	return 0;
 }
 
+int uloop_timeout_pending(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;
diff --git a/uloop.h b/uloop.h
index 0a20eb9..8fb890d 100644
--- a/uloop.h
+++ b/uloop.h
@@ -87,6 +87,7 @@ int uloop_fd_delete(struct uloop_fd *sock);
 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_pending(struct uloop_timeout *timeout);
 
 int uloop_process_add(struct uloop_process *p);
 int uloop_process_delete(struct uloop_process *p);