Remove payload copy in all outgoing p2p messages

3 files changed, 41 insertions, 35 deletions

diff --git a/contrib/epee/include/storages/levin_abstract_invoke2.h b/contrib/epee/include/storages/levin_abstract_invoke2.h
index 802e16c1b..383d67cc2 100644
--- a/contrib/epee/include/storages/levin_abstract_invoke2.h
+++ b/contrib/epee/include/storages/levin_abstract_invoke2.h
@@ -37,21 +37,14 @@
 #undef MONERO_DEFAULT_LOG_CATEGORY
 #define MONERO_DEFAULT_LOG_CATEGORY "net"
 
+template<typename context_t>
+void on_levin_traffic(const context_t &context, bool initiator, bool sent, bool error, size_t bytes, const char *category);
+
+template<typename context_t>
+void on_levin_traffic(const context_t &context, bool initiator, bool sent, bool error, size_t bytes, int command);
+
 namespace
 {
-  template<typename context_t>
-  void on_levin_traffic(const context_t &context, bool initiator, bool sent, bool error, size_t bytes, const char *category)
-  {
-    MCINFO("net.p2p.traffic", context << bytes << " bytes " << (sent ? "sent" : "received") << (error ? "/corrupt" : "")
-        << " for category " << category << " initiated by " << (initiator ? "us" : "peer"));
-  }
-  template<typename context_t>
-  void on_levin_traffic(const context_t &context, bool initiator, bool sent, bool error, size_t bytes, int command)
-  {
-    char buf[32];
-    snprintf(buf, sizeof(buf),  "command-%u", command);
-    return on_levin_traffic(context, initiator, sent, error, bytes, buf);
-  }
   static const constexpr epee::serialization::portable_storage::limits_t default_levin_limits = {
     8192, // objects
     16384, // fields
@@ -117,12 +110,11 @@ namespace epee
       const boost::uuids::uuid &conn_id = context.m_connection_id;
       typename serialization::portable_storage stg;
       out_struct.store(stg);
-      byte_slice buff_to_send;
+      levin::message_writer to_send{16 * 1024};
       std::string buff_to_recv;
-      stg.store_to_binary(buff_to_send, 16 * 1024);
+      stg.store_to_binary(to_send.buffer);
 
-      on_levin_traffic(context, true, true, false, buff_to_send.size(), command);
-      int res = transport.invoke(command, boost::string_ref{reinterpret_cast<const char*>(buff_to_send.data()), buff_to_send.size()}, buff_to_recv, conn_id);
+      int res = transport.invoke(command, std::move(to_send), buff_to_recv, conn_id);
       if( res <=0 )
       {
         LOG_PRINT_L1("Failed to invoke command " << command << " return code " << res);
@@ -145,10 +137,9 @@ namespace epee
       const boost::uuids::uuid &conn_id = context.m_connection_id;
       typename serialization::portable_storage stg;
       const_cast<t_arg&>(out_struct).store(stg);//TODO: add true const support to searilzation
-      byte_slice buff_to_send;
-      stg.store_to_binary(buff_to_send, 16 * 1024);
-      on_levin_traffic(context, true, true, false, buff_to_send.size(), command);
-      int res = transport.invoke_async(command, epee::to_span(buff_to_send), conn_id, [cb, command](int code, const epee::span<const uint8_t> buff, typename t_transport::connection_context& context)->bool
+      levin::message_writer to_send{16 * 1024};
+      stg.store_to_binary(to_send.buffer);
+      int res = transport.invoke_async(command, std::move(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 )
@@ -192,11 +183,10 @@ namespace epee
       const boost::uuids::uuid &conn_id = context.m_connection_id;
       serialization::portable_storage stg;
       out_struct.store(stg);
-      byte_slice buff_to_send;
-      stg.store_to_binary(buff_to_send);
+      levin::message_writer to_send;
+      stg.store_to_binary(to_send.buffer);
 
-      on_levin_traffic(context, true, true, false, buff_to_send.size(), command);
-      int res = transport.notify(command, epee::to_span(buff_to_send), conn_id);
+      int res = transport.send(to_send.finalize_notify(command), conn_id);
       if(res <=0 )
       {
         MERROR("Failed to notify command " << command << " return code " << res);
@@ -207,7 +197,7 @@ 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 epee::span<const uint8_t> in_buff, byte_slice& buff_out, callback_t cb, t_context& context )
+    int buff_to_t_adapter(int command, const epee::span<const uint8_t> in_buff, byte_stream& buff_out, callback_t cb, t_context& context )
     {
       serialization::portable_storage strg;
       if(!strg.load_from_binary(in_buff, &default_levin_limits))
@@ -230,12 +220,11 @@ namespace epee
       serialization::portable_storage strg_out;
       static_cast<t_out_type&>(out_struct).store(strg_out);
 
-      if(!strg_out.store_to_binary(buff_out, 32 * 1024))
+      if(!strg_out.store_to_binary(buff_out))
       {
         LOG_ERROR("Failed to store_to_binary in command" << command);
         return -1;
       }
-      on_levin_traffic(context, false, true, false, buff_out.size(), command);
 
       return res;
     }
@@ -262,7 +251,7 @@ namespace epee
     }
 
 #define CHAIN_LEVIN_INVOKE_MAP2(context_type) \
-  int invoke(int command, const epee::span<const uint8_t> in_buff, epee::byte_slice& buff_out, context_type& context) \
+  int invoke(int command, const epee::span<const uint8_t> in_buff, epee::byte_stream& buff_out, context_type& context) \
   { \
   bool handled = false; \
   return handle_invoke_map(false, command, in_buff, buff_out, context, handled); \
@@ -271,13 +260,13 @@ namespace epee
 #define CHAIN_LEVIN_NOTIFY_MAP2(context_type) \
   int notify(int command, const epee::span<const uint8_t> in_buff, context_type& context) \
   { \
-  bool handled = false; epee::byte_slice fake_str; \
-  return handle_invoke_map(true, command, in_buff, fake_str, context, handled); \
+    bool handled = false; epee::byte_stream fake_str; \
+    return handle_invoke_map(true, command, in_buff, fake_str, context, handled); \
   } 
 
 
 #define CHAIN_LEVIN_INVOKE_MAP() \
-  int invoke(int command, const epee::span<const uint8_t> in_buff, epee::byte_slice& buff_out, epee::net_utils::connection_context_base& context) \
+  int invoke(int command, const epee::span<const uint8_t> in_buff, epee::byte_stream& buff_out, epee::net_utils::connection_context_base& context) \
   { \
   bool handled = false; \
   return handle_invoke_map(false, command, in_buff, buff_out, context, handled); \
@@ -297,7 +286,7 @@ namespace epee
   } 
 
 #define BEGIN_INVOKE_MAP2(owner_type) \
-  template <class t_context> int handle_invoke_map(bool is_notify, int command, const epee::span<const uint8_t> in_buff, epee::byte_slice& 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, epee::byte_stream& buff_out, t_context& context, bool& handled) \
   { \
   try { \
   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 c5d0c48ee..655a2eb12 100644
--- a/contrib/epee/include/storages/portable_storage.h
+++ b/contrib/epee/include/storages/portable_storage.h
@@ -34,6 +34,7 @@
 namespace epee
 {
   class byte_slice;
+  class byte_stream;
   namespace serialization
   {
     /************************************************************************/
@@ -83,8 +84,13 @@ namespace epee
 
       //-------------------------------------------------------------------------------
       bool		store_to_binary(byte_slice& target, std::size_t initial_buffer_size = 8192);
-      bool		load_from_binary(const epee::span<const uint8_t> target, const limits_t *limits = NULL);
-      bool		load_from_binary(const std::string& target, const limits_t *limits = NULL);
+      bool		store_to_binary(byte_stream& ss);
+      bool		load_from_binary(const epee::span<const uint8_t> target, const limits_t *limits = nullptr);
+      bool		load_from_binary(const std::string& target, const limits_t *limits = nullptr)
+      {
+        return load_from_binary(epee::strspan<uint8_t>(target), limits);
+      }
+
       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);
diff --git a/contrib/epee/include/storages/portable_storage_template_helper.h b/contrib/epee/include/storages/portable_storage_template_helper.h
index e7250e895..a06f0c2d3 100644
--- a/contrib/epee/include/storages/portable_storage_template_helper.h
+++ b/contrib/epee/include/storages/portable_storage_template_helper.h
@@ -36,6 +36,8 @@
 
 namespace epee
 {
+  class byte_stream;
+
   namespace serialization
   {
     //-----------------------------------------------------------------------------------------------------------
@@ -127,5 +129,14 @@ namespace epee
       store_t_to_binary(str_in, binary_buff, initial_buffer_size);
       return binary_buff;
     }
+    //-----------------------------------------------------------------------------------------------------------
+    template<class t_struct>
+    bool store_t_to_binary(t_struct& str_in, byte_stream& binary_buff)
+    {
+      portable_storage ps;
+      str_in.store(ps);
+      return ps.store_to_binary(binary_buff);
+    }
+
   }
 }