From 613cde66c25464121f2f6dace99782bad0e07d9b Mon Sep 17 00:00:00 2001
From: Sverker Eriksson <sverker@erlang.org>
Date: Thu, 26 Apr 2018 19:14:31 +0200
Subject: erts: Optimize monitor signal by message piggyback

If no message/signal is sent (to same destination)
then monitor signal is flushed when process is scheduled out.
---
 erts/emulator/beam/erl_process.h | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'erts/emulator/beam/erl_process.h')

diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index e2aa1d9f84..b66272194c 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -660,6 +660,13 @@ struct ErtsSchedulerData_ {
 	Uint64 out;
 	Uint64 in;
     } io;
+    struct {
+        ErtsSignal* sig;
+        Eterm to;
+#ifdef DEBUG
+	Process* dbg_from;
+#endif
+    } pending_signal;
 
     Uint64 reductions;
     ErtsSchedWallTime sched_wall_time;
-- 
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