From eac634575959a3d32007ebed9921897976c9a82d Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Mon, 12 Sep 2022 10:24:55 +0200
Subject: Loop flags: a simple idempotent event announcement mechanism

---
 sysdep/unix/io-loop.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'sysdep/unix/io-loop.h')

diff --git a/sysdep/unix/io-loop.h b/sysdep/unix/io-loop.h
index 31c40459..aec7a409 100644
--- a/sysdep/unix/io-loop.h
+++ b/sysdep/unix/io-loop.h
@@ -34,6 +34,9 @@ struct birdloop
 
   uint links;
 
+  _Atomic u32 flags;
+  struct birdloop_flag_handler *flag_handler;
+
   void (*stopped)(void *data);
   void *stop_data;
 
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