commit 49e38630499cdab70bc15c255c89fc38048a57a9
Author: TreeHunter <60896014+TreeHunter9@users.noreply.github.com>
Date:   Fri Jan 10 09:30:26 2025 +0300

    Fix race in shutdown thread start (#8380)
    
    Previously we assign value to shutdownSemaphore after shutdownThread is started, where it is already needed. So we can have situation where shutdownThread instantly leaving due to shutdownSemaphore == nullptr, and we are left with a server that can only be stopped with kill -9.
    
    Co-authored-by: Artyom Ivanov <artyom.ivanov@red-soft.ru>

--- a/src/yvalve/why.cpp
+++ b/src/yvalve/why.cpp
@@ -804,11 +804,11 @@ private:
 		explicit CtrlCHandler(MemoryPool& p)
 			: ShutdownInit(p)
 		{
+			shutdownSemaphore = &semaphore;
 			Thread::start(shutdownThread, 0, 0, &handle);
 
 			procInt = ISC_signal(SIGINT, handlerInt, 0);
 			procTerm = ISC_signal(SIGTERM, handlerTerm, 0);
-			shutdownSemaphore = &semaphore;
 		}
 
 		~CtrlCHandler()