Error：‘GTimeVal‘ is deprecated: Use ‘GDateTime‘

Myth丶恋晨 2022-12-26 04:58 212阅读 0赞

参考链接：  
[https://tecnocode.co.uk/2019/08/24/gtimeval-deprecation-in-glib-2-61-2/][https_tecnocode.co.uk_2019_08_24_gtimeval-deprecation-in-glib-2-61-2]

[https://developer.gnome.org/glib/stable/glib-Date-and-Time-Functions.html\#g-get-real-time][https_developer.gnome.org_glib_stable_glib-Date-and-Time-Functions.html_g-get-real-time]

[https://developer.gnome.org/glib/stable/glib-Threads.html\#g-cond-wait-until][https_developer.gnome.org_glib_stable_glib-Threads.html_g-cond-wait-until]

[https://people.gnome.org/~ryanl/glib-docs/glib-Date-and-Time-Functions.html\#GTimeVal][https_people.gnome.org_ryanl_glib-docs_glib-Date-and-Time-Functions.html_GTimeVal]

[https://people.gnome.org/~ryanl/glib-docs/glib-Date-and-Time-Functions.html][https_people.gnome.org_ryanl_glib-docs_glib-Date-and-Time-Functions.html]

[https://developer.gnome.org/glib/stable/glib-Basic-Types.html\#gint64][https_developer.gnome.org_glib_stable_glib-Basic-Types.html_gint64]

--------------------

## `GTimeVal`和`g_get_current_time()` 到2038年是不安全的，该结构体和函数已经过时；   需要使用`GDateTime`和`g_get_real_time()`代替。 ##

类似的报错：

'g_get_current_time' is deprecated: Use 'g_get_real_time' instead [-Werror=deprecated-declarations]
    
    'g_time_val_to_iso8601' is deprecated: Use 'g_date_time_format' instead [-Werror=deprecated-declarations]

解决方法：

### GTimeVal tv: ###

**定义：**

typedef struct { 
      glong tv_sec;   //秒
      glong tv_usec;  //微妙
    } GTimeVal;

**现状：**

> 代表精确的时间，以秒和微秒为单位。类似于UNIX调用返回的`struct timevalgettimeofday()`。  
> `GLib`试图统一使用`64`位整数来表示微秒精度的时间。因此，此类型将从`GLib`的将来版本中删除。

**修改：**

-    GTimeVal tv;
    +    gint64 tv;

### g\_get\_current\_time: ###

使用 `g_get_real_time()` 代替。

-        g_get_current_time(&tv);
    -  		 tv = g_get_real_time ();

### g\_time\_val\_to\_iso8601: ###

-        timestr = g_time_val_to_iso8601(&tv);   
    +       g_autoptr(GDateTime) dt=g_date_time_new_from_unix_local(tv);
    +       timestr = g_date_time_format_iso8601(dt);

总体情况：

-    GTimeVal tv;
    +    gint64 tv;
         gchar *timestr;
     
         if (enable_timestamp_msg && !cur_mon) { 
    -        g_get_current_time(&tv);
    -        timestr = g_time_val_to_iso8601(&tv);
    +       tv = g_get_real_time ();    
    +       g_autoptr(GDateTime) dt=g_date_time_new_from_unix_local(tv);
    +       timestr = g_date_time_format_iso8601(dt);
             error_printf("%s ", timestr);
             g_free(timestr);
         }

### g\_cond\_timed\_wait(): ###

gboolean
    g_cond_timed_wait (GCond *cond,
                       GMutex *mutex,
                       GTimeVal *abs_time);

> `g_cond_timed_wait` 从`2.32`版开始已弃用，并且不应在新编写的代码中使用。  
> 使用`g_cond_wait_until()`代替。

g\_cond\_wait\_until():

gboolean
    g_cond_wait_until (GCond *cond,
                       GMutex *mutex,
                       gint64 end_time);

[https_tecnocode.co.uk_2019_08_24_gtimeval-deprecation-in-glib-2-61-2]: https://tecnocode.co.uk/2019/08/24/gtimeval-deprecation-in-glib-2-61-2/
[https_developer.gnome.org_glib_stable_glib-Date-and-Time-Functions.html_g-get-real-time]: https://developer.gnome.org/glib/stable/glib-Date-and-Time-Functions.html#g-get-real-time
[https_developer.gnome.org_glib_stable_glib-Threads.html_g-cond-wait-until]: https://developer.gnome.org/glib/stable/glib-Threads.html#g-cond-wait-until
[https_people.gnome.org_ryanl_glib-docs_glib-Date-and-Time-Functions.html_GTimeVal]: https://people.gnome.org/~ryanl/glib-docs/glib-Date-and-Time-Functions.html#GTimeVal
[https_people.gnome.org_ryanl_glib-docs_glib-Date-and-Time-Functions.html]: https://people.gnome.org/~ryanl/glib-docs/glib-Date-and-Time-Functions.html
[https_developer.gnome.org_glib_stable_glib-Basic-Types.html_gint64]: https://developer.gnome.org/glib/stable/glib-Basic-Types.html#gint64