From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Fri, 1 Apr 2022 14:46:44 +0000 (+0200)
Subject: dnsdist: Add DISABLE_FALSE_SHARING_PADDING option
X-Git-Tag: rec-4.7.0-beta1~7^2~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=12b9a1f01d7340dfafc4e52a17fc8068cfc4e77b;p=thirdparty%2Fpdns.git

dnsdist: Add DISABLE_FALSE_SHARING_PADDING option
---

diff --git a/pdns/stat_t.hh b/pdns/stat_t.hh
index d318c980b2..389a62676b 100644
--- a/pdns/stat_t.hh
+++ b/pdns/stat_t.hh
@@ -23,6 +23,7 @@
 
 #include <atomic>
 
+#ifndef DISABLE_FALSE_SHARING_PADDING
 #define CPU_LEVEL1_DCACHE_LINESIZE 64 // Until we know better via configure/getconf
 
 namespace pdns {
@@ -77,3 +78,12 @@ namespace pdns {
   typedef stat_t_trait<uint32_t> stat32_t;
   typedef stat_t_trait<uint16_t> stat16_t;
 }
+#else
+namespace pdns {
+  using stat_t = std::atomic<uint64_t>;
+  using stat32_t = std::atomic<uint32_t>;
+  using stat16_t = std::atomic<uint16_t>;
+  template <class T>
+  using stat_t_trait = std::atomic<T>;
+}
+#endif