From 09e299ac8a54afd31f853b93b46aaf09c9f6c27b Mon Sep 17 00:00:00 2001
From: Eao3piq4e <eao3piq4e@forge.com>
Date: Tue, 2 Aug 2022 10:14:02 +0800
Subject: [PATCH] Update bbox_lib.cpp

---
 src/gausskernel/cbb/bbox/bbox_lib.cpp | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/gausskernel/cbb/bbox/bbox_lib.cpp b/src/gausskernel/cbb/bbox/bbox_lib.cpp
index 32b48667d..115af9053 100644
--- a/src/gausskernel/cbb/bbox/bbox_lib.cpp
+++ b/src/gausskernel/cbb/bbox/bbox_lib.cpp
@@ -51,8 +51,16 @@ struct PIPE_IDS {
 static struct PIPE_IDS astPipeIds[BBOX_MAX_PIDS];
 
 /*
- * compare string pszSrc and pszTarget
- */
+function name: bbox_strncmp
+description: compare two strings, the pointer pszSrc and pszTarget store their addresses.
+arguments: Two pointers of type const char*, pointing to two strings needed to be compared.
+return value: s32, an interger.
+					 If it's zero, then string pszSrc and pszTarget are same,
+                     else it indicates the position of the first character that
+                     these two strings can't match.
+note：The two pointers shouldn't be null.
+date: 2022/8/2
+*/
 s32 bbox_strncmp(const char* pszSrc, const char* pszTarget, s32 count)
 {
     signed char cRes = 0;