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-rw-r--r--host/lib/usrp/common/recv_packet_demuxer_3000.hpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/host/lib/usrp/common/recv_packet_demuxer_3000.hpp b/host/lib/usrp/common/recv_packet_demuxer_3000.hpp
index 9f64d4262..77bdebab0 100644
--- a/host/lib/usrp/common/recv_packet_demuxer_3000.hpp
+++ b/host/lib/usrp/common/recv_packet_demuxer_3000.hpp
@@ -123,8 +123,10 @@ namespace uhd{ namespace usrp{
typedef std::queue<transport::managed_recv_buffer::sptr> queue_type_t;
std::map<boost::uint32_t, queue_type_t> _queues;
transport::zero_copy_if::sptr _xport;
+#ifdef RECV_PACKET_DEMUXER_3000_THREAD_SAFE
uhd::atomic_uint32_t _claimed;
boost::condition_variable cond;
+#endif // RECV_PACKET_DEMUXER_3000_THREAD_SAFE
boost::mutex mutex;
};