From: Max Kellermann <max.kellermann@ionos.com>
Date: Thu, 3 Oct 2024 15:12:59 +0000 (+0200)
Subject: msg/async/Event: make the pipe byte static
X-Git-Tag: v20.0.0~499^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=ef6a48c8bbe70bda09240ab7ddd4f23e36c2dae7;p=ceph.git

msg/async/Event: make the pipe byte static

This avoids a stack allocation and assignment.

Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
---

diff --git a/src/msg/async/Event.cc b/src/msg/async/Event.cc
index 08e117ea54a7..16abb1368b02 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);