#define SA_LOG( fmt, ... )\
{\
    FILE* fp = fopen( "salog.log", "a" );\
    struct timeval tv;\
    memset( &tv, 0, sizeof(struct timeval) );\
    gettimeofday( &tv, NULL );\
    char* ct = ctime( &(tv.tv_sec) );\
    size_t ctl = strlen( ct );\
    ct[ (ctl>=6 ? ctl-6 : 0) ] = 0x00;\
    fprintf( fp,\
        "%s.%06ld %s:%d || %s: " fmt "\n",\
        ct+8, tv.tv_usec,\
        ( rindex(__FILE__, '/') ? rindex(__FILE__, '/') : __FILE__ ) ,\
        __LINE__, __PRETTY_FUNCTION__,\
        ##__VA_ARGS__ );\
    fclose( fp );\
}