From 03c02a746ceef003366d3fb928499c327e8da69a Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 6 Feb 2017 10:44:49 +0200
Subject: Introduce target::task_count

---
 build2/types | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'build2/types')

diff --git a/build2/types b/build2/types
index b9f3ce9..7afc24e 100644
--- a/build2/types
+++ b/build2/types
@@ -19,6 +19,7 @@
 #include <initializer_list>
 
 #include <mutex>
+#include <atomic>
 #include <future>
 
 #include <butl/ft/shared_mutex>
@@ -78,6 +79,8 @@ namespace build2
 
   // Concurrency.
   //
+  using atomic_count = std::atomic<size_t>; // Matches scheduler::atomic_count.
+
   using std::future;
 
 #if   defined(__cpp_lib_shared_mutex)
-- 
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