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-rw-r--r--src/lib/change_signaller.cc10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/lib/change_signaller.cc b/src/lib/change_signaller.cc
index a1f093d14..b00fb4960 100644
--- a/src/lib/change_signaller.cc
+++ b/src/lib/change_signaller.cc
@@ -22,3 +22,13 @@
#include "change_signaller.h"
+boost::atomic<int> ChangeID::_next;
+
+
+int
+ChangeID::next()
+{
+ return _next.add(1, boost::memory_order::relaxed);
+}
+
+