Don't use sleep function in tail streams.

Let's use our usleep_wrap function which uses nanosleep.
The old sleep can interact with SIGALRM.

* stream.c (tail_calc): Calculate microseconds instead
of seconds.
(sleep): Wrapper for Windows gone.
(tail_strategy): Rename sec variable to usec. Use
usleep_wrap instead of sleep.

* sysif.c (usleep_wrap): Change to extern.

* sysif.h (usleep_wrap): Declaration updated.

1 files changed, 1 insertions, 1 deletions

diff --git a/sysif.c b/sysif.c
index 78327b0c..e22db64a 100644
--- a/sysif.c
+++ b/sysif.c
@@ -158,7 +158,7 @@ static val abort_wrap(void)
   abort();
 }
 
-static val usleep_wrap(val usec)
+val usleep_wrap(val usec)
 {
   val retval;
   cnum u = c_num(usec);