preliminary poll(2) support

It's a nice alternative to IO.select for higher-numbered
file descriptors, especially sparse ones.  Our interface
also generates less garbage than IO.select does.

1 files changed, 1 insertions, 0 deletions

diff --git a/.document b/.document
index f3e553b..c6c1568 100644
--- a/.document
+++ b/.document
@@ -12,3 +12,4 @@ ext/kgio/connect.c
 ext/kgio/kgio_ext.c
 ext/kgio/read_write.c
 ext/kgio/wait.c
+ext/kgio/poll.c