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, 0 deletions

diff --git a/sysif.h b/sysif.h
index 5b22ea5c..4d9f3f42 100644
--- a/sysif.h
+++ b/sysif.h
@@ -45,6 +45,7 @@ typedef long off_t;
 val getenv_wrap(val name);
 val at_exit_call(val func);
 val at_exit_do_not_call(val func);
+val usleep_wrap(val usec);
 #if HAVE_FORK_STUFF
 val exec_wrap(val file, val args_opt);
 #endif