Properly use std::hardware_destructive_interference_size

kcat · Feb 23, 2024 · 3f09148 · 3f09148
1 parent b57fde3
commit 3f09148
Showing 1 changed file with 5 additions and 5 deletions.
diff --git a/common/ringbuffer.h b/common/ringbuffer.h
@@ -20,15 +20,15 @@
 struct RingBuffer {
 private:
 #ifdef __cpp_lib_hardware_interference_size
-    using std::hardware_destructive_interference_size;
+    static constexpr std::size_t sCacheAlignment{std::hardware_destructive_interference_size};
 #else
     /* Assume a 64-byte cache line, the most common/likely value. */
-    static constexpr std::size_t hardware_destructive_interference_size{64};
+    static constexpr std::size_t sCacheAlignment{64};
 #endif
-    alignas(hardware_destructive_interference_size) std::atomic<std::size_t> mWritePtr{0u};
-    alignas(hardware_destructive_interference_size) std::atomic<std::size_t> mReadPtr{0u};
+    alignas(sCacheAlignment) std::atomic<std::size_t> mWritePtr{0u};
+    alignas(sCacheAlignment) std::atomic<std::size_t> mReadPtr{0u};
 
-    alignas(hardware_destructive_interference_size) const std::size_t mWriteSize;
+    alignas(sCacheAlignment) const std::size_t mWriteSize;
     const std::size_t mSizeMask;
     const std::size_t mElemSize;