From: Joost VandeVondele <Joost.VandeVondele@gmail.com>
Date: Fri, 21 Jun 2019 14:24:28 +0000 (+0200)
Subject: Make the debug counters thread safe.
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=4c986b050111e4fb96716a75ae2168c005b03df9

Make the debug counters thread safe.

needed to use them in a threaded run.

No functional change.
---

diff --git a/src/misc.cpp b/src/misc.cpp
index 8d3b202d..b1539ce2 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -145,7 +145,7 @@ const string engine_info(bool to_uci) {
 
 
 /// Debug functions used mainly to collect run-time statistics
-static int64_t hits[2], means[2];
+static std::atomic<int64_t> hits[2], means[2];
 
 void dbg_hit_on(bool b) { ++hits[0]; if (b) ++hits[1]; }
 void dbg_hit_on(bool c, bool b) { if (c) dbg_hit_on(b); }