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

[project/libubox.git] / uloop.c

diff --git a/uloop.c b/uloop.c
index 2de4feb..3a62b62 100644 (file)
--- a/uloop.c
+++ b/uloop.c
@@ -1,24 +1,20 @@
 /*
- *   Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
- *   Copyright (C) 2010 John Crispin <blogic@openwrt.org>
- *   Copyright (C) 2010 Steven Barth <steven@midlink.org>
+ * uloop - event loop implementation
  *
- *   This program is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation; either version 2 of the License, or
- *   (at your option) any later version.
+ * Copyright (C) 2010-2013 Felix Fietkau <nbd@openwrt.org>
  *
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   You should have received a copy of the GNU General Public License
- *   along with this program; if not, write to the Free Software
- *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
  *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
-
 #include <sys/time.h>
 #include <sys/types.h>
 
@@ -391,6 +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;