From d051f4d1d30eb0d50e7f8a5bc82963249624106d Mon Sep 17 00:00:00 2001
From: Andrej Babic <andrej.babic@psi.ch>
Date: Mon, 12 Feb 2018 11:32:13 +0100
Subject: [PATCH] Shared pointer instead of value copy

---
 src/RingBuffer.hpp  | 2 +-
 src/ZmqReceiver.cpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/RingBuffer.hpp b/src/RingBuffer.hpp
index 430480a..026f841 100644
--- a/src/RingBuffer.hpp
+++ b/src/RingBuffer.hpp
@@ -22,7 +22,7 @@ struct FrameMetadata
     std::vector<size_t> frame_shape;
 
     // Pass additional header values.
-    std::map<std::string, boost::any> header_values;
+    std::map<std::string, std::shared_ptr<boost::any>> header_values;
 };
 
 class RingBuffer
diff --git a/src/ZmqReceiver.cpp b/src/ZmqReceiver.cpp
index d9ecfce..6d89575 100644
--- a/src/ZmqReceiver.cpp
+++ b/src/ZmqReceiver.cpp
@@ -127,7 +127,7 @@ shared_ptr<FrameMetadata> ZmqReceiver::read_json_header(const string& header)
         
         const auto& name = value_mapping.first;
         const auto& data_type = value_mapping.second;
-        const boost::any& value = get_value_from_json(json_header, name, data_type);
+        auto value = make_shared<boost::any>(get_value_from_json(json_header, name, data_type));
 
         header_data->header_values.insert(
             {name, value}