lib: cope with negative timeout in thread.c

Since time is no longer cached, if we schedule something with zero
timeout, it will automatically be negative by the time we reach the
event loop.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>

diff --git a/lib/thread.c b/lib/thread.c
index 406eddc9e60244356a92bdc8d06b8faac40b41dc..de7066bb820164437d34ba1a54b8e5782735dd29 100644 (file)
--- a/lib/thread.c
+++ b/lib/thread.c
@@ -1203,6 +1203,12 @@ thread_fetch (struct thread_master *m, struct thread *fetch)
             timer_wait = timer_wait_bg;
         }
 
+      if (timer_wait && timer_wait->tv_sec < 0)
+        {
+          timerclear(&timer_val);
+          timer_wait = &timer_val;
+        }
+
       num = fd_select (m, FD_SETSIZE, &readfd, &writefd, &exceptfd, timer_wait);
       
       /* Signals should get quick treatment */