From c4fa2aff45e974d7042410587c6c9ae2487f3f5d Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom.smeding@gmail.com>
Date: Sat, 8 Aug 2020 12:07:17 +0200
Subject: server: Performance fix in user_data

---
 user_data.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/user_data.c b/user_data.c
index 6b9b041..125a6b4 100644
--- a/user_data.c
+++ b/user_data.c
@@ -61,8 +61,10 @@ void userdata_unregister(i64 userid,int fd){
 	if(i==data->len){
 		die("userdata_unregister(%" PRIi64 ", %d) while nonexistent",userid,fd);
 	}
-	memmove(data->fds+i,data->fds+i+1,data->len-i-1);
-	memmove(data->last_active+i,data->last_active+i+1,data->len-i-1);
+	if(i<data->len-1){
+		data->fds[i]=data->fds[data->len-1];
+		data->last_active[i]=data->last_active[data->len-1];
+	}
 	data->len--;
 	if(data->len==0){
 		ht_delete(user_hash,userid);
-- 
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