From ef6a48c8bbe70bda09240ab7ddd4f23e36c2dae7 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max.kellermann@ionos.com>
Date: Thu, 3 Oct 2024 17:12:59 +0200
Subject: [PATCH] msg/async/Event: make the pipe byte static

This avoids a stack allocation and assignment.

Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
---
 src/msg/async/Event.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/msg/async/Event.cc b/src/msg/async/Event.cc
index 08e117ea54a..16abb1368b0 100644
--- a/src/msg/async/Event.cc
+++ b/src/msg/async/Event.cc
@@ -347,7 +347,7 @@ void EventCenter::wakeup()
     return ;
 
   ldout(cct, 20) << __func__ << dendl;
-  char buf = 'c';
+  static constexpr char buf = 'c';
   // wake up "event_wait"
   #ifdef _WIN32
   int n = send(notify_send_fd, &buf, sizeof(buf), 0);
-- 
2.39.5