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-rw-r--r--erts/emulator/sys/common/erl_poll.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/erts/emulator/sys/common/erl_poll.c b/erts/emulator/sys/common/erl_poll.c
index 7aa53e8f36..ced8a4a2a7 100644
--- a/erts/emulator/sys/common/erl_poll.c
+++ b/erts/emulator/sys/common/erl_poll.c
@@ -782,10 +782,14 @@ update_pollset(ErtsPollSet *ps, int fd, ErtsPollOp op, ErtsPollEvents events)
struct kevent evts[2];
struct timespec ts = {0, 0};
-#ifdef EV_DISPATCH
- /* If we have EV_DISPATCH we use it. The kevent descriptions for both
- read and write are added on OP_ADD and removed on OP_DEL. And then
- after than only EV_ENABLE|EV_DISPATCH are used.
+#if defined(EV_DISPATCH) && !defined(__OpenBSD__)
+ /* If we have EV_DISPATCH we use it, unless we are on OpenBSD as the
+ behavior of EV_EOF seems to be edge triggered there and we need it
+ to be level triggered.
+
+ The kevent descriptions for both read and write are added on OP_ADD
+ and removed on OP_DEL. And then after than only EV_ENABLE|EV_DISPATCH
+ are used.
It could be possible to not modify the pollset when disabling and/or
deleting events, but that may cause the poll threads to be awoken