From ee6bbd68bd0eaa3675099765a3e74cbb58cc2f1d Mon Sep 17 00:00:00 2001
From: ihm-tswow <76849026+ihm-tswow@users.noreply.github.com>
Date: Tue, 27 Sep 2022 12:35:45 +0200
Subject: Core/Guilds: Improve HandleRoster performance (#28290)

- takes call time from ~400 microseconds to ~260 microseconds on my machine in a guild with 900 members
---
 src/server/game/Guilds/Guild.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src')

diff --git a/src/server/game/Guilds/Guild.cpp b/src/server/game/Guilds/Guild.cpp
index 01d1bfc3ae4..717fe0e4505 100644
--- a/src/server/game/Guilds/Guild.cpp
+++ b/src/server/game/Guilds/Guild.cpp
@@ -1235,6 +1235,7 @@ void Guild::HandleRoster(WorldSession* session)
 {
     WorldPackets::Guild::GuildRoster roster;
 
+    roster.RankData.reserve(m_ranks.size());
     for (RankInfo const& rank : m_ranks)
     {
         WorldPackets::Guild::GuildRankData& rankData =  roster.RankData.emplace_back();
@@ -1249,6 +1250,7 @@ void Guild::HandleRoster(WorldSession* session)
     }
 
     bool sendOfficerNote = _HasRankRight(session->GetPlayer(), GR_RIGHT_VIEWOFFNOTE);
+    roster.MemberData.reserve(m_members.size());
     for (auto const& [guid, member] : m_members)
     {
         WorldPackets::Guild::GuildRosterMemberData& memberData = roster.MemberData.emplace_back();
-- 
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