From 08e4497c6e3b3f434c0bb255c3942648f153fe66 Mon Sep 17 00:00:00 2001
From: Lee Clagett <code@leeclagett.com>
Date: Sun, 24 Jan 2021 07:42:57 +0000
Subject: Improve cryptonote (block and tx) binary read performance

---
 src/cryptonote_basic/tx_extra.h | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

(limited to 'src/cryptonote_basic/tx_extra.h')

diff --git a/src/cryptonote_basic/tx_extra.h b/src/cryptonote_basic/tx_extra.h
index 50f2e1438..76efc22d3 100644
--- a/src/cryptonote_basic/tx_extra.h
+++ b/src/cryptonote_basic/tx_extra.h
@@ -57,11 +57,7 @@ namespace cryptonote
       // size - 1 - because of variant tag
       for (size = 1; size <= TX_EXTRA_PADDING_MAX_COUNT; ++size)
       {
-        std::ios_base::iostate state = ar.stream().rdstate();
-        bool eof = EOF == ar.stream().peek();
-        ar.stream().clear(state);
-
-        if (eof)
+        if (ar.eof())
           break;
 
         uint8_t zero;
@@ -139,8 +135,7 @@ namespace cryptonote
       if(!::do_serialize(ar, field))
         return false;
 
-      std::istringstream iss(field);
-      binary_archive<false> iar(iss);
+      binary_archive<false> iar{epee::strspan<std::uint8_t>(field)};
       serialize_helper helper(*this);
       return ::serialization::serialize(iar, helper);
     }
-- 
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