diff --git a/ev.pod b/ev.pod index 29c8de6..7d7c36a 100644 --- a/ev.pod +++ b/ev.pod @@ -2699,7 +2699,8 @@ be detected at runtime. Libev requires an integer type (suitable for storing C<0> or C<1>) whose access is atomic with respect to other threads or signal contexts. No such type is easily found in the C language, so you can provide your own type -that you know is safe for your purposes. +that you know is safe for your purposes. It is used both for signal handler "locking" +as well as for signal and thread safety in C watchers. In the absense of this define, libev will use C (from F), which is usually good enough on most platforms.