1 files changed, 5 insertions, 0 deletions

diff --git a/ot_event.h b/ot_event.h
index aa007d0..efdefff 100644
--- a/ot_event.h
+++ b/ot_event.h
@@ -38,6 +38,11 @@ int  event_close(int fd);
    out with up to max ready descriptors. Returns how many, or -1. */
 int  event_wait(ot_event *out, int max, int timeout_ms);
 
+/* Whether the registered set may be changed from another thread while this
+   one is waiting on it. True where the kernel keeps the set, false where
+   this module keeps it in memory of its own. */
+int  event_can_share(void);
+
 /* Which mechanism was compiled in, for the version string */
 const char *event_mechanism(void);