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处理expr_plus中的district时，使用了memmove，当命中region较多时，显著影响性能。 #25

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zhengchao
2021-03-08 18:59:51 +08:00
parent 593cb23a7d
commit 460831ea23
1 changed files with 6 additions and 12 deletions
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18
src/entry/Maat_api.cpp
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@@ -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;
}