[vlc-devel] [vlc-commits] vout: cancel the thread and simplify

Rémi Denis-Courmont remi at remlab.net
Thu May 9 12:39:42 CEST 2019


There was never a rule of sending specifically "core" changes for review outside code freeze. This is just a bad faith excuse to not admit that you are picking on me.

Le 9 mai 2019 13:15:34 GMT+03:00, Thomas Guillem <thomas at gllm.fr> a écrit :
>
>On Thu, May 9, 2019, at 11:48, Rémi Denis-Courmont wrote:
>> It does simplify the code on objective complexity metrics. And that
>ship has sailed about ten years ago.
>> 
>> And I don't think it's okay to pick on one developer. I was not the
>first to push code without review lately. And I am also not the only
>person to disagree with systematic review.
>
>I don't think someone pushed in VLC core without a review since we
>decided to move to gitlab.
>
>From the vote poll result, it seems the vast majority of people agreed
>to use gitalb and systematic reviews.
>
>> 
>> Le 9 mai 2019 10:35:47 GMT+03:00, Thomas Guillem <thomas at gllm.fr> a
>écrit :
>>> Hello,
>>> 
>>> This doesn't simplify at all, thread_cancel is very complicated, I
>wold have preferred a cond + bool.
>>> 
>>> You should propose all your patches changing the core to the ML.
>Since they always have to be reviewed anyway when we switch to gitlab
>soon.
>>> 
>>> On Wed, May 8, 2019, at 20:21, Rémi Denis-Courmont wrote:
>>>> vlc | branch: master | Rémi Denis-Courmont <remi at remlab.net> | Wed
>May  
>>>> 8 19:20:53 2019 +0300| [949204f27498bd21e8d269b5aa9b80c7ec84a435] |
>
>>>> committer: Rémi Denis-Courmont
>>>> 
>>>> vout: cancel the thread and simplify
>>>> 
>>>>>
>http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=949204f27498bd21e8d269b5aa9b80c7ec84a435
>>>>   src/video_output/control.h      |  7 -------
>>>>   src/video_output/video_output.c | 24 ++++++++++++------------
>>>>   2 files changed, 12 insertions(+), 19 deletions(-)
>>>>  
>>>>  diff --git a/src/video_output/control.h
>b/src/video_output/control.h
>>>>  index 46b78122e4..b189b6478a 100644
>>>>  --- a/src/video_output/control.h
>>>>  +++ b/src/video_output/control.h
>>>>  @@ -27,13 +27,6 @@
>>>>   
>>>>   /* */
>>>>   enum {
>>>>  -    VOUT_CONTROL_CLEAN,
>>>>  -
>>>>  -#if 0
>>>>  -    /* */
>>>>  -    VOUT_CONTROL_START,
>>>>  -    VOUT_CONTROL_STOP,
>>>>  -#endif
>>>>       VOUT_CONTROL_CHANGE_FILTERS,        /* string */
>>>>       VOUT_CONTROL_CHANGE_INTERLACE,      /* boolean */
>>>>   
>>>>  diff --git a/src/video_output/video_output.c
>b/src/video_output/video_output.c
>>>>  index 2a76ad5c00..b84336ac23 100644
>>>>  --- a/src/video_output/video_output.c
>>>>  +++ b/src/video_output/video_output.c
>>>>  @@ -33,6 +33,8 @@
>>>>   # include "config.h"
>>>>   #endif
>>>>   
>>>>  +#include <stdnoreturn.h>
>>>>  +
>>>>   #include <vlc_common.h>
>>>>   
>>>>   #include <math.h>
>>>>  @@ -1527,11 +1529,9 @@ void vout_Cancel(vout_thread_t *vout, bool
>canceled)
>>>>       vout_control_Release(&sys->control);
>>>>   }
>>>>   
>>>>  -static int ThreadControl(vout_thread_t *vout, vout_control_cmd_t
>cmd)
>>>>  +static void ThreadControl(vout_thread_t *vout, vout_control_cmd_t
>cmd)
>>>>   {
>>>>       switch(cmd.type) {
>>>>  -    case VOUT_CONTROL_CLEAN:
>>>>  -        return 1;
>>>>       case VOUT_CONTROL_CHANGE_FILTERS:
>>>>           ThreadChangeFilters(vout, NULL,
>>>>                               cmd.string != NULL ?
>>>>  @@ -1579,7 +1579,6 @@ static int ThreadControl(vout_thread_t
>*vout, 
>>>>  vout_control_cmd_t cmd)
>>>>           break;
>>>>       }
>>>>       vout_control_cmd_Clean(&cmd);
>>>>  -    return 0;
>>>>   }
>>>>   
>>>>   
>>>> 
>/*****************************************************************************
>>>>  @@ -1589,7 +1588,7 @@ static int ThreadControl(vout_thread_t
>*vout, 
>>>>  vout_control_cmd_t cmd)
>>>>    * terminated. It handles the pictures arriving in the video heap
>and 
>>>>  the
>>>>    * display device events.
>>>>    
>>>> 
>*****************************************************************************/
>>>>  -static void *Thread(void *object)
>>>>  +noreturn static void *Thread(void *object)
>>>>   {
>>>>       vout_thread_t *vout = object;
>>>>       vout_thread_sys_t *sys = vout->p;
>>>>  @@ -1607,20 +1606,21 @@ static void *Thread(void *object)
>>>>           } else {
>>>>               deadline = VLC_TICK_INVALID;
>>>>           }
>>>>  -        while (!vout_control_Pop(&sys->control, &cmd, deadline))
>>>>  -            if (ThreadControl(vout, cmd))
>>>>  -                goto out;
>>>>  +        while (!vout_control_Pop(&sys->control, &cmd, deadline))
>{
>>>>  +            int canc = vlc_savecancel();
>>>>  +            ThreadControl(vout, cmd);
>>>>  +            vlc_restorecancel(canc);
>>>>  +        }
>>>>   
>>>>  +        int canc = vlc_savecancel();
>>>>           deadline = VLC_TICK_INVALID;
>>>>           wait = ThreadDisplayPicture(vout, &deadline) !=
>VLC_SUCCESS;
>>>>   
>>>>           const bool picture_interlaced =
>sys->displayed.is_interlaced;
>>>>   
>>>>           vout_SetInterlacingState(vout, picture_interlaced);
>>>>  +        vlc_restorecancel(canc);
>>>>       }
>>>>  -
>>>>  -out:
>>>>  -    return NULL;
>>>>   }
>>>>   
>>>>   static void vout_StopDisplay(vout_thread_t *vout)
>>>>  @@ -1628,7 +1628,7 @@ static void vout_StopDisplay(vout_thread_t
>*vout)
>>>>       vout_thread_sys_t *sys = vout->p;
>>>>   
>>>>       assert(sys->original.i_chroma != 0);
>>>>  -    vout_control_PushVoid(&sys->control, VOUT_CONTROL_CLEAN);
>>>>  +    vlc_cancel(sys->thread);
>>>>       vlc_join(sys->thread, NULL);
>>>>   
>>>>       if (sys->spu_blend != NULL) vlc-commits mailing list
>>>>  vlc-commits at videolan.org
>>>>  https://mailman.videolan.org/listinfo/vlc-commits
>>>> 
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>> 
>> -- 
>> Envoyé de mon appareil Android avec Courriel K-9 Mail. Veuillez
>excuser ma brièveté. 
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-- 
Envoyé de mon appareil Android avec Courriel K-9 Mail. Veuillez excuser ma brièveté.
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