From fcf0a2810ba69d1017d6d7d9a5d6e60ac962f9f1 Mon Sep 17 00:00:00 2001
From: Michael Mueller <michael.mueller@uos.de>
Date: Mon, 27 Mar 2023 16:35:05 +0200
Subject: [PATCH] Added check for cache-alignment to MPSC queue.

---
 src/mx/util/mpsc_queue.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mx/util/mpsc_queue.h b/src/mx/util/mpsc_queue.h
index fe3a022..44c97a2 100644
--- a/src/mx/util/mpsc_queue.h
+++ b/src/mx/util/mpsc_queue.h
@@ -5,6 +5,8 @@
 #include <cstddef>
 #include <cstdint>
 #include <mx/system/cache.h>
+#include <base/log.h>
+#include <cassert>
 
 namespace mx::util {
 /**
@@ -20,6 +22,8 @@ public:
         : _head(reinterpret_cast<T *>(&_stub)), _tail(reinterpret_cast<T *>(&_stub)),
           _end(reinterpret_cast<T *>(&_stub))
     {
+        assert((reinterpret_cast<uint64_t>(&_head) % 64 == 0) && (reinterpret_cast<uint64_t>(&_tail) % 64 == 0) &&
+               "head or tail not cacheline-aligned");
         reinterpret_cast<T &>(_stub).next(nullptr);
     }
     ~MPSCQueue() noexcept = default;