From 737877e62467b924eea0a43eab68258b0c13db78 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 13 Feb 2017 09:48:12 +0200
Subject: Add MT-safe variable_cache, use for variable overrides

---
 build2/variable.cxx | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'build2/variable.cxx')

diff --git a/build2/variable.cxx b/build2/variable.cxx
index 7e105e6..09790b4 100644
--- a/build2/variable.cxx
+++ b/build2/variable.cxx
@@ -1283,4 +1283,7 @@ namespace build2
 
     return lookup ();
   }
+
+  size_t variable_cache_mutex_shard_size;
+  unique_ptr<shared_mutex[]> variable_cache_mutex_shard;
 }
-- 
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