Busy loop in pause mode

[bernhardschmidt]

Reported at the Debian BTS by Moritz Hoffmann at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=637546 . All credits to him. Verified in 0.85

---

mtr has an undocumented option in curses mode that pauses mtr. Simply
press 'p' and the process will stop until space is pressed. However, it
does not wait for input but rather calls select repeatedly to wait for
an event. Due to the select parameters, select returns immediately such
that mtr constantly loops.

The problem is in select.c. However, I don't know what the best patch
for this is. The following patch just increases the timeout so that the
mtr does not spin that fast.

--- mtr-0.80.orig/select.c
+++ mtr-0.80/select.c
@@ -84,8 +84,8 @@
     do {
       if(anyset || paused) {
        selecttime.tv_sec = 0;
-       selecttime.tv_usec = 0;
-
+       selecttime.tv_usec = 200;
+
        rv = select(maxfd, (void *)&readfd, NULL, NULL, &selecttime);

       } else {

[rewolff]

This bug has been fixed.