From 460831ea23176e91f709721e16d5e906f66b6703 Mon Sep 17 00:00:00 2001
From: zhengchao <zhengchao@iie.ac.cn>
Date: Mon, 8 Mar 2021 18:59:51 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A4=84=E7=90=86expr=5Fplus=E4=B8=AD=E7=9A=84?=
 =?UTF-8?q?district=E6=97=B6=EF=BC=8C=E4=BD=BF=E7=94=A8=E4=BA=86memmove?=
 =?UTF-8?q?=EF=BC=8C=E5=BD=93=E5=91=BD=E4=B8=ADregion=E8=BE=83=E5=A4=9A?=
 =?UTF-8?q?=E6=97=B6=EF=BC=8C=E6=98=BE=E8=91=97=E5=BD=B1=E5=93=8D=E6=80=A7?=
 =?UTF-8?q?=E8=83=BD=E3=80=82=20#25?=
MIME-Version: 1.0
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---
 src/entry/Maat_api.cpp | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/src/entry/Maat_api.cpp b/src/entry/Maat_api.cpp
index 1880041..909ddad 100644
--- a/src/entry/Maat_api.cpp
+++ b/src/entry/Maat_api.cpp
@@ -280,23 +280,17 @@ int region_compile(_Maat_feather_t*feather, struct Maat_hierarchy_compile_mid* c
 int match_district(struct _OUTER_scan_status_t *_mid, scan_result_t *region_hit, int region_hit_num)
 {
 	struct Maat_region_inner* region=NULL;
-	int i=0;
-	int ret_region_num=region_hit_num;
-	while(i<ret_region_num)
+	int i=0, j=0;
+	for(i=0; i<region_hit_num; i++)
 	{
 		region=(struct Maat_region_inner*)(region_hit[i].tag);
-		if(region->district_id!=_mid->district_id)
+		if(region->district_id==_mid->district_id)
 		{
-			ret_region_num--;
-			//todo: replace memmove with high performance solution.
-			memmove(&(region_hit[i]),&(region_hit[i+1]),sizeof(scan_result_t)*(ret_region_num-i));
-		}
-		else
-		{
-			i++;
+			memcpy(region_hit+j, region_hit+i, sizeof(scan_result_t));
+			j++;
 		}
 	}
-	return ret_region_num;
+	return j;
 }