From bf1f123b09ec7402b0565808619e11b5bfe6b16b Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Mon, 14 Aug 2017 22:42:17 +0200
Subject: Progress indicator: Show number of active items

---
 src/libutil/util.hh | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'src/libutil/util.hh')

diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index f37f2c5d1be5..35909c8d5b31 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -462,4 +462,18 @@ struct ReceiveInterrupts
     { }
 };
 
+
+
+/* A RAII helper that increments a counter on construction and
+   decrements it on destruction. */
+template<typename T>
+struct MaintainCount
+{
+    T & counter;
+    long delta;
+    MaintainCount(T & counter, long delta = 1) : counter(counter), delta(delta) { counter += delta; }
+    ~MaintainCount() { counter -= delta; }
+};
+
+
 }
-- 
cgit 1.4.1