C++ (Cpp) tb_vsnprintf Examples

Example #1

tb_void_t tb_trace_tail(tb_char_t const* format, ...)
{
    // check
    tb_check_return(format);

    // enter
    tb_spinlock_enter_without_profiler(&g_lock);

    // done
    do
    {
        // check
        tb_check_break(g_mode);

        // init
        tb_va_list_t    l;
        tb_char_t*      p = g_line;
        tb_char_t*      e = g_line + sizeof(g_line);
        tb_va_start(l, format);

        // append format
        if (p < e) p += tb_vsnprintf(p, e - p, format, l);

        // append end
        if (p < e) *p = '\0';
        e[-1] = '\0';

        // print it
        if (g_mode & TB_TRACE_MODE_PRINT) tb_print(g_line);

        // print it to file
#ifndef TB_CONFIG_MICRO_ENABLE
        if ((g_mode & TB_TRACE_MODE_FILE) && g_file) 
        {
            // done
            tb_size_t size = p - g_line;
            tb_size_t writ = 0;
            while (writ < size)
            {
                // writ it
                tb_long_t real = tb_file_writ(g_file, (tb_byte_t const*)g_line + writ, size - writ);
                tb_check_break(real > 0);

                // save size
                writ += real;
            }
        }
#endif

        // exit
        tb_va_end(l);

    } while (0);

    // leave
    tb_spinlock_leave(&g_lock);
}

Example #2

File: trace.c Project: 1060460048/tbox

tb_void_t tb_trace_done_with_args(tb_char_t const* prefix, tb_char_t const* module, tb_char_t const* format, tb_va_list_t args)
{
    // check
    tb_check_return(format);

    // enter
    tb_spinlock_enter_without_profiler(&g_lock);

    // done
    do
    {
        // check
        tb_check_break(g_mode);

        // init
        tb_char_t*      p = g_line;
        tb_char_t*      e = g_line + sizeof(g_line);

        // print prefix to file
        if ((g_mode & TB_TRACE_MODE_FILE) && g_file) 
        {
            // print time to file
            tb_tm_t lt = {0};
            if (p < e && tb_localtime(tb_time(), &lt))
                p += tb_snprintf(p, e - p, "[%04ld-%02ld-%02ld %02ld:%02ld:%02ld]: ", lt.year, lt.month, lt.mday, lt.hour, lt.minute, lt.second);

            // print self to file
            if (p < e) p += tb_snprintf(p, e - p, "[%lx]: ", tb_thread_self());
        }

        // append prefix
        tb_char_t*      b = p;
        if (prefix && p < e) p += tb_snprintf(p, e - p, "[%s]: ", prefix);

        // append module
        if (module && p < e) p += tb_snprintf(p, e - p, "[%s]: ", module);

        // append format
        if (p < e) p += tb_vsnprintf(p, e - p, format, args);

        // append end
        if (p < e) *p = '\0'; e[-1] = '\0';

        // print it
        if (g_mode & TB_TRACE_MODE_PRINT) tb_print(b);

        // print it to file
        if ((g_mode & TB_TRACE_MODE_FILE) && g_file) 
        {
            // done
            tb_size_t size = p - g_line;
            tb_size_t writ = 0;
            while (writ < size)
            {
                // writ it
                tb_long_t real = tb_file_writ(g_file, (tb_byte_t const*)g_line + writ, size - writ);
                tb_check_break(real > 0);

                // save size
                writ += real;
            }
        }

    } while (0);

    // leave
    tb_spinlock_leave(&g_lock);
}