epee: better network buffer data structure

avoids pointless allocs and memcpy

4 files changed, 23 insertions, 14 deletions

diff --git a/contrib/epee/include/storages/http_abstract_invoke.h b/contrib/epee/include/storages/http_abstract_invoke.h
index d93084ab0..18b7f10c1 100644
--- a/contrib/epee/include/storages/http_abstract_invoke.h
+++ b/contrib/epee/include/storages/http_abstract_invoke.h
@@ -97,7 +97,7 @@ namespace epee
         return false;
       }
 
-      return serialization::load_t_from_binary(result_struct, pri->m_body);
+      return serialization::load_t_from_binary(result_struct, epee::strspan<uint8_t>(pri->m_body));
     }
 
     template<class t_request, class t_response, class t_transport>
diff --git a/contrib/epee/include/storages/levin_abstract_invoke2.h b/contrib/epee/include/storages/levin_abstract_invoke2.h
index d77e7a1f8..06eb9bdaf 100644
--- a/contrib/epee/include/storages/levin_abstract_invoke2.h
+++ b/contrib/epee/include/storages/levin_abstract_invoke2.h
@@ -28,6 +28,7 @@
 
 #include "portable_storage_template_helper.h"
 #include <boost/utility/value_init.hpp>
+#include "span.h"
 #include "net/levin_base.h"
 
 #undef MONERO_DEFAULT_LOG_CATEGORY
@@ -114,7 +115,7 @@ namespace epee
       const_cast<t_arg&>(out_struct).store(stg);//TODO: add true const support to searilzation
       std::string buff_to_send;
       stg.store_to_binary(buff_to_send);
-      int res = transport.invoke_async(command, buff_to_send, conn_id, [cb, command](int code, const std::string& buff, typename t_transport::connection_context& context)->bool 
+      int res = transport.invoke_async(command, epee::strspan<uint8_t>(buff_to_send), conn_id, [cb, command](int code, const epee::span<const uint8_t> buff, typename t_transport::connection_context& context)->bool 
       {
         t_result result_struct = AUTO_VAL_INIT(result_struct);
         if( code <=0 )
@@ -156,7 +157,7 @@ namespace epee
       std::string buff_to_send;
       stg.store_to_binary(buff_to_send);
 
-      int res = transport.notify(command, buff_to_send, conn_id);
+      int res = transport.notify(command, epee::strspan<uint8_t>(buff_to_send), conn_id);
       if(res <=0 )
       {
         MERROR("Failed to notify command " << command << " return code " << res);
@@ -167,7 +168,7 @@ namespace epee
     //----------------------------------------------------------------------------------------------------
     //----------------------------------------------------------------------------------------------------
     template<class t_owner, class t_in_type, class t_out_type, class t_context, class callback_t>
-    int buff_to_t_adapter(int command, const std::string& in_buff, std::string& buff_out, callback_t cb, t_context& context )
+    int buff_to_t_adapter(int command, const epee::span<const uint8_t> in_buff, std::string& buff_out, callback_t cb, t_context& context )
     {
       serialization::portable_storage strg;
       if(!strg.load_from_binary(in_buff))
@@ -197,7 +198,7 @@ namespace epee
     }
 
     template<class t_owner, class t_in_type, class t_context, class callback_t>
-    int buff_to_t_adapter(t_owner* powner, int command, const std::string& in_buff, callback_t cb, t_context& context)
+    int buff_to_t_adapter(t_owner* powner, int command, const epee::span<const uint8_t> in_buff, callback_t cb, t_context& context)
     {
       serialization::portable_storage strg;
       if(!strg.load_from_binary(in_buff))
@@ -215,14 +216,14 @@ namespace epee
     }
 
 #define CHAIN_LEVIN_INVOKE_MAP2(context_type) \
-  int invoke(int command, const std::string& in_buff, std::string& buff_out, context_type& context) \
+  int invoke(int command, const epee::span<const uint8_t> in_buff, std::string& buff_out, context_type& context) \
   { \
   bool handled = false; \
   return handle_invoke_map(false, command, in_buff, buff_out, context, handled); \
   } 
 
 #define CHAIN_LEVIN_NOTIFY_MAP2(context_type) \
-  int notify(int command, const std::string& in_buff, context_type& context) \
+  int notify(int command, const epee::span<const uint8_t> in_buff, context_type& context) \
   { \
   bool handled = false; std::string fake_str;\
   return handle_invoke_map(true, command, in_buff, fake_str, context, handled); \
@@ -230,27 +231,27 @@ namespace epee
 
 
 #define CHAIN_LEVIN_INVOKE_MAP() \
-  int invoke(int command, const std::string& in_buff, std::string& buff_out, epee::net_utils::connection_context_base& context) \
+  int invoke(int command, const epee::span<const uint8_t> in_buff, std::string& buff_out, epee::net_utils::connection_context_base& context) \
   { \
   bool handled = false; \
   return handle_invoke_map(false, command, in_buff, buff_out, context, handled); \
   } 
 
 #define CHAIN_LEVIN_NOTIFY_MAP() \
-  int notify(int command, const std::string& in_buff, epee::net_utils::connection_context_base& context) \
+  int notify(int command, const epee::span<const uint8_t> in_buff, epee::net_utils::connection_context_base& context) \
   { \
   bool handled = false; std::string fake_str;\
   return handle_invoke_map(true, command, in_buff, fake_str, context, handled); \
   } 
 
 #define CHAIN_LEVIN_NOTIFY_STUB() \
-  int notify(int command, const std::string& in_buff, epee::net_utils::connection_context_base& context) \
+  int notify(int command, const epee::span<const uint8_t> in_buff, epee::net_utils::connection_context_base& context) \
   { \
   return -1; \
   } 
 
 #define BEGIN_INVOKE_MAP2(owner_type) \
-  template <class t_context> int handle_invoke_map(bool is_notify, int command, const std::string& in_buff, std::string& buff_out, t_context& context, bool& handled) \
+  template <class t_context> int handle_invoke_map(bool is_notify, int command, const epee::span<const uint8_t> in_buff, std::string& buff_out, t_context& context, bool& handled) \
   { \
   typedef owner_type internal_owner_type_name;
 
diff --git a/contrib/epee/include/storages/portable_storage.h b/contrib/epee/include/storages/portable_storage.h
index 0f0c6210f..d0e40d606 100644
--- a/contrib/epee/include/storages/portable_storage.h
+++ b/contrib/epee/include/storages/portable_storage.h
@@ -35,6 +35,7 @@
 #include "portable_storage_to_json.h"
 #include "portable_storage_from_json.h"
 #include "portable_storage_val_converters.h"
+#include "span.h"
 #include "int-util.h"
 
 namespace epee
@@ -81,7 +82,8 @@ namespace epee
 
       //-------------------------------------------------------------------------------
       bool		store_to_binary(binarybuffer& target);
-      bool		load_from_binary(const binarybuffer& target);
+      bool		load_from_binary(const epee::span<const uint8_t> target);
+      bool		load_from_binary(const std::string& target) { return load_from_binary(epee::strspan<uint8_t>(target)); }
       template<class trace_policy>
       bool		  dump_as_xml(std::string& targetObj, const std::string& root_name = "");
       bool		  dump_as_json(std::string& targetObj, size_t indent = 0, bool insert_newlines = true);
@@ -146,7 +148,7 @@ namespace epee
       CATCH_ENTRY("portable_storage::store_to_binary", false)
     }
     inline
-    bool portable_storage::load_from_binary(const binarybuffer& source)
+    bool portable_storage::load_from_binary(const epee::span<const uint8_t> source)
     {
       m_root.m_entries.clear();
       if(source.size() < sizeof(storage_block_header))
diff --git a/contrib/epee/include/storages/portable_storage_template_helper.h b/contrib/epee/include/storages/portable_storage_template_helper.h
index bbd8413fc..13c870d44 100644
--- a/contrib/epee/include/storages/portable_storage_template_helper.h
+++ b/contrib/epee/include/storages/portable_storage_template_helper.h
@@ -84,7 +84,7 @@ namespace epee
     }
     //-----------------------------------------------------------------------------------------------------------
     template<class t_struct>
-    bool load_t_from_binary(t_struct& out, const std::string& binary_buff)
+    bool load_t_from_binary(t_struct& out, const epee::span<const uint8_t> binary_buff)
     {
       portable_storage ps;
       bool rs = ps.load_from_binary(binary_buff);
@@ -95,6 +95,12 @@ namespace epee
     }
     //-----------------------------------------------------------------------------------------------------------
     template<class t_struct>
+    bool load_t_from_binary(t_struct& out, const std::string& binary_buff)
+    {
+      return load_t_from_binary(out, epee::strspan<uint8_t>(binary_buff));
+    }
+    //-----------------------------------------------------------------------------------------------------------
+    template<class t_struct>
     bool load_t_from_binary_file(t_struct& out, const std::string& binary_file)
     {
       std::string f_buff;