synchronized_value (#3984)

Author: Klaim

libmamba/CMakeLists.txt

@@ -316,6 +316,7 @@ set(
     ${LIBMAMBA_INCLUDE_DIR}/mamba/util/path_manip.hpp
     ${LIBMAMBA_INCLUDE_DIR}/mamba/util/random.hpp
     ${LIBMAMBA_INCLUDE_DIR}/mamba/util/string.hpp
+    ${LIBMAMBA_INCLUDE_DIR}/mamba/util/synchronized_value.hpp
     ${LIBMAMBA_INCLUDE_DIR}/mamba/util/tuple_hash.hpp
     ${LIBMAMBA_INCLUDE_DIR}/mamba/util/type_traits.hpp
     ${LIBMAMBA_INCLUDE_DIR}/mamba/util/url_manip.hpp