1 files changed, 14 insertions, 0 deletions

diff --git a/ot_event.c b/ot_event.c
index 1542bf5..8f55817 100644
--- a/ot_event.c
+++ b/ot_event.c
@@ -71,6 +71,10 @@ int event_add(int fd, int what, uint32_t generation) { return event_ctl(EPOLL_CT
 int event_modify(int fd, int what, uint32_t generation) { return event_ctl(EPOLL_CTL_MOD, fd, what, generation); }
 int event_del(int fd) { return epoll_ctl(g_epoll, EPOLL_CTL_DEL, fd, NULL); }
 
+/* A descriptor leaves the interest list when the last reference to its open
+   file description is closed, and the tracker never duplicates one */
+int event_close(int fd) { return close(fd); }
+
 int event_wait(ot_event *out, int max, int timeout_ms) {
   int count, i;
 
@@ -171,6 +175,9 @@ int event_add(int fd, int what, uint32_t generation) { return event_change(fd, w
 int event_modify(int fd, int what, uint32_t generation) { return event_change(fd, what, generation, 0); }
 int event_del(int fd) { return event_change(fd, 0, 0, 1); }
 
+/* Closing a descriptor removes every kevent that references it */
+int event_close(int fd) { return close(fd); }
+
 int event_wait(ot_event *out, int max, int timeout_ms) {
   struct timespec  timeout;
   struct timespec *deadline = NULL;
@@ -311,6 +318,13 @@ int event_del(int fd) {
   return 0;
 }
 
+/* Nothing here lives in the kernel, so the entry has to come out by hand
+   before the descriptor goes, or poll reports POLLNVAL for it forever */
+int event_close(int fd) {
+  event_del(fd);
+  return close(fd);
+}
+
 int event_wait(ot_event *out, int max, int timeout_ms) {
   int ready, found = 0, i;