From 39f2b82f30fe5221c0b3333c961c1845a66d048e Mon Sep 17 00:00:00 2001
From: Matt Witherspoon <32485495+spoonincode@users.noreply.github.com>
Date: Fri, 4 Dec 2020 13:14:43 -0500
Subject: [PATCH] improve OC cache lookup performance via hashed index

---
 .../include/eosio/chain/webassembly/eos-vm-oc/code_cache.hpp  | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libraries/chain/include/eosio/chain/webassembly/eos-vm-oc/code_cache.hpp b/libraries/chain/include/eosio/chain/webassembly/eos-vm-oc/code_cache.hpp
index ce94cc5db90..2f5031d3cf7 100644
--- a/libraries/chain/include/eosio/chain/webassembly/eos-vm-oc/code_cache.hpp
+++ b/libraries/chain/include/eosio/chain/webassembly/eos-vm-oc/code_cache.hpp
@@ -5,7 +5,7 @@
 #include <eosio/chain/webassembly/eos-vm-oc/eos-vm-oc.hpp>
 #include <eosio/chain/webassembly/eos-vm-oc/ipc_helpers.hpp>
 #include <boost/multi_index_container.hpp>
-#include <boost/multi_index/ordered_index.hpp>
+#include <boost/multi_index/hashed_index.hpp>
 #include <boost/multi_index/sequenced_index.hpp>
 #include <boost/multi_index/composite_key.hpp>
 #include <boost/multi_index/key_extractors.hpp>
@@ -52,7 +52,7 @@ class code_cache_base {
          code_descriptor,
          indexed_by<
             sequenced<>,
-            ordered_unique<tag<by_hash>,
+            hashed_unique<tag<by_hash>,
                composite_key< code_descriptor,
                   member<code_descriptor, digest_type, &code_descriptor::code_hash>,
                   member<code_descriptor, uint8_t,     &code_descriptor::vm_version>