CClog With System Time

cocos2d-x C++
#1

For checking efficiency of code I need to know time taken in execution of code.With NSlog is easy to know as it shows time up to ms.How can i achieve this in CClog. Thanks in advance

#2

modify cocos/2d/ios/CCCommon.mm

void log(const char * pszFormat, ...)
{
//    printf("cocos2d: ");
    char szBuf[kMaxLogLen+1] = {0};
    va_list ap;
    va_start(ap, pszFormat);
    vsnprintf(szBuf, kMaxLogLen, pszFormat, ap);
    va_end(ap);
//    printf("%s", szBuf);
//    printf("\n");
    NSLog(@"%s", szBuf);
}
#3

Thanks ……works like a charm