X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fio%2Fpoll.c;h=a4e83ed761e77251767b01b3e3f5c5dd3492bfcd;hp=043feff74046226e61c367ad68644f3aba3fb54e;hb=e846b1a93ecf096164ff2c4faaf4a89c24a0e76b;hpb=d00c9d1be5a56fbf990882f9a6da5704b3f1ea75

diff --git a/ccan/io/poll.c b/ccan/io/poll.c
index 043feff7..a4e83ed7 100644
--- a/ccan/io/poll.c
+++ b/ccan/io/poll.c
@@ -17,6 +17,7 @@ static struct fd **fds = NULL;
 static LIST_HEAD(closing);
 static LIST_HEAD(always);
 static struct timemono (*nowfn)(void) = time_mono;
+static int (*pollfn)(struct pollfd *fds, nfds_t nfds, int timeout) = poll;
 
 struct timemono (*io_time_override(struct timemono (*now)(void)))(void)
 {
@@ -25,6 +26,13 @@ struct timemono (*io_time_override(struct timemono (*now)(void)))(void)
 	return old;
 }
 
+int (*io_poll_override(int (*poll)(struct pollfd *fds, nfds_t nfds, int timeout)))(struct pollfd *, nfds_t, int)
+{
+	int (*old)(struct pollfd *fds, nfds_t nfds, int timeout) = pollfn;
+	pollfn = poll;
+	return old;
+}
+
 static bool add_fd(struct fd *fd, short events)
 {
 	if (!max_fds) {
@@ -269,7 +277,7 @@ void *io_loop(struct timers *timers, struct timer **expired)
 			}
 		}
 
-		r = poll(pollfds, num_fds, ms_timeout);
+		r = pollfn(pollfds, num_fds, ms_timeout);
 		if (r < 0)
 			break;