From 65ac4a081070dd51553b1aea3cfb784ac0290d47 Mon Sep 17 00:00:00 2001
From: zhangjun <2281979437@qq.com>
Date: Fri, 12 Aug 2016 22:14:07 +0800
Subject: 增加rt_strnlen,lua采用单独的线程
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---
 src/kservice.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'src')

diff --git a/src/kservice.c b/src/kservice.c
index 7250639346..f5cd934e2d 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -462,7 +462,26 @@ rt_int32_t rt_strcmp(const char *cs, const char *ct)
     return (*cs - *ct);
 }
 RTM_EXPORT(rt_strcmp);
+/**
+ * The  strnlen()  function  returns the number of characters in the
+ * string pointed to by s, excluding the terminating null byte ('\0'), 
+ * but at most maxlen.  In doing this, strnlen() looks only at the 
+ * first maxlen characters in the string pointed to by s and never 
+ * beyond s+maxlen.
+ *
+ * @param s the string
+ * @param maxlen the max size
+ * @return the length of string
+ */
+rt_size_t rt_strnlen(const char *s, rt_ubase_t maxlen)
+{
+    const char *sc;
+
+    for (sc = s; *sc != '\0' && sc - s < maxlen; ++sc) /* nothing */
+        ;
 
+    return sc - s;
+}
 /**
  * This function will return the length of a string, which terminate will
  * null character.
-- 
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