diff options
| -rw-r--r-- | ev.pod | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -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<ev_async> watchers. In the absense of this define, libev will use C<sig_atomic_t volatile> (from F<signal.h>), which is usually good enough on most platforms. |