diff mbox series

[06/12] ui/gtk-gl-area: Plug memleak in gd_gl_area_create_context()

Message ID 20200814160241.7915-7-pannengyuan@huawei.com
State New
Headers show
Series fix some error memleaks | expand

Commit Message

Pan Nengyuan Aug. 14, 2020, 4:02 p.m. UTC
Receiving error in local variable err, and forgot to free it.
Considering that there is no place to deal with it. Clean up.

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
---
Cc: Gerd Hoffmann <kraxel@redhat.com>
---
 ui/gtk-gl-area.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

Comments

Li Qiang Aug. 26, 2020, 12:20 p.m. UTC | #1
Pan Nengyuan <pannengyuan@huawei.com> 于2020年8月14日周五 下午6:15写道:
>
> Receiving error in local variable err, and forgot to free it.
> Considering that there is no place to deal with it. Clean up.
>
> Reported-by: Euler Robot <euler.robot@huawei.com>
> Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
> ---
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> ---
>  ui/gtk-gl-area.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c
> index 85f9d14c51..c740a7eb14 100644
> --- a/ui/gtk-gl-area.c
> +++ b/ui/gtk-gl-area.c
> @@ -142,15 +142,14 @@ QEMUGLContext gd_gl_area_create_context(DisplayChangeListener *dcl,
>      VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
>      GdkWindow *window;
>      GdkGLContext *ctx;
> -    GError *err = NULL;
>
>      gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
>      window = gtk_widget_get_window(vc->gfx.drawing_area);
> -    ctx = gdk_window_create_gl_context(window, &err);
> +    ctx = gdk_window_create_gl_context(window, NULL);
>      gdk_gl_context_set_required_version(ctx,
>                                          params->major_ver,
>                                          params->minor_ver);
> -    gdk_gl_context_realize(ctx, &err);
> +    gdk_gl_context_realize(ctx, NULL);
>      return ctx;
>  }

Maybe we should check the return value of  'gdk_window_create_gl_context'
and 'gdk_gl_context_realize' instead of omitting it?

Thanks,
Li Qiang

>

> --
> 2.18.2
>
>
Pan Nengyuan Aug. 27, 2020, 7:06 a.m. UTC | #2
On 2020/8/26 20:20, Li Qiang wrote:
> Pan Nengyuan <pannengyuan@huawei.com> 于2020年8月14日周五 下午6:15写道:
>>
>> Receiving error in local variable err, and forgot to free it.
>> Considering that there is no place to deal with it. Clean up.
>>
>> Reported-by: Euler Robot <euler.robot@huawei.com>
>> Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
>> ---
>> Cc: Gerd Hoffmann <kraxel@redhat.com>
>> ---
>>  ui/gtk-gl-area.c | 5 ++---
>>  1 file changed, 2 insertions(+), 3 deletions(-)
>>
>> diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c
>> index 85f9d14c51..c740a7eb14 100644
>> --- a/ui/gtk-gl-area.c
>> +++ b/ui/gtk-gl-area.c
>> @@ -142,15 +142,14 @@ QEMUGLContext gd_gl_area_create_context(DisplayChangeListener *dcl,
>>      VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
>>      GdkWindow *window;
>>      GdkGLContext *ctx;
>> -    GError *err = NULL;
>>
>>      gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
>>      window = gtk_widget_get_window(vc->gfx.drawing_area);
>> -    ctx = gdk_window_create_gl_context(window, &err);
>> +    ctx = gdk_window_create_gl_context(window, NULL);
>>      gdk_gl_context_set_required_version(ctx,
>>                                          params->major_ver,
>>                                          params->minor_ver);
>> -    gdk_gl_context_realize(ctx, &err);
>> +    gdk_gl_context_realize(ctx, NULL);
>>      return ctx;
>>  }
> 
> Maybe we should check the return value of  'gdk_window_create_gl_context'
> and 'gdk_gl_context_realize' instead of omitting it?

OK, Agree with you.

How about check the value like the below?
(Return NULL when error happens in gdk_gl_context_realize. It's different from the original.)

Thanks.

--------
diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c
index 85f9d14c51..98c22d23f5 100644
--- a/ui/gtk-gl-area.c
+++ b/ui/gtk-gl-area.c
@@ -147,10 +147,21 @@ QEMUGLContext gd_gl_area_create_context(DisplayChangeListener *dcl,
     gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
     window = gtk_widget_get_window(vc->gfx.drawing_area);
     ctx = gdk_window_create_gl_context(window, &err);
+    if (err) {
+        g_printerr("Create gdk gl context failed: %s\n", err->message);
+        g_error_free(err);
+        return NULL;
+    }
     gdk_gl_context_set_required_version(ctx,
                                         params->major_ver,
                                         params->minor_ver);
     gdk_gl_context_realize(ctx, &err);
+    if (err) {
+        g_printerr("Realize gdk gl context failed: %s\n", err->message);
+        g_error_free(err);
+        g_clear_object(&ctx);
+        return NULL;
+    }
     return ctx;
 }


> 
> Thanks,
> Li Qiang
> 
>>
> 
>> --
>> 2.18.2
>>
>>
> .
>
Li Qiang Aug. 27, 2020, 11:08 a.m. UTC | #3
Pan Nengyuan <pannengyuan@huawei.com> 于2020年8月27日周四 下午3:06写道:
>
>
>
> On 2020/8/26 20:20, Li Qiang wrote:
> > Pan Nengyuan <pannengyuan@huawei.com> 于2020年8月14日周五 下午6:15写道:
> >>
> >> Receiving error in local variable err, and forgot to free it.
> >> Considering that there is no place to deal with it. Clean up.
> >>
> >> Reported-by: Euler Robot <euler.robot@huawei.com>
> >> Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
> >> ---
> >> Cc: Gerd Hoffmann <kraxel@redhat.com>
> >> ---
> >>  ui/gtk-gl-area.c | 5 ++---
> >>  1 file changed, 2 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c
> >> index 85f9d14c51..c740a7eb14 100644
> >> --- a/ui/gtk-gl-area.c
> >> +++ b/ui/gtk-gl-area.c
> >> @@ -142,15 +142,14 @@ QEMUGLContext gd_gl_area_create_context(DisplayChangeListener *dcl,
> >>      VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
> >>      GdkWindow *window;
> >>      GdkGLContext *ctx;
> >> -    GError *err = NULL;
> >>
> >>      gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
> >>      window = gtk_widget_get_window(vc->gfx.drawing_area);
> >> -    ctx = gdk_window_create_gl_context(window, &err);
> >> +    ctx = gdk_window_create_gl_context(window, NULL);
> >>      gdk_gl_context_set_required_version(ctx,
> >>                                          params->major_ver,
> >>                                          params->minor_ver);
> >> -    gdk_gl_context_realize(ctx, &err);
> >> +    gdk_gl_context_realize(ctx, NULL);
> >>      return ctx;
> >>  }
> >
> > Maybe we should check the return value of  'gdk_window_create_gl_context'
> > and 'gdk_gl_context_realize' instead of omitting it?
>
> OK, Agree with you.
>
> How about check the value like the below?

I think it is OK.

> (Return NULL when error happens in gdk_gl_context_realize. It's different from the original.)

Don't familiar with the internal of how gtk-gl work.

Maybe you can wait for other review or Gerd's decision.

Thanks,
Li Qiang

>
> Thanks.
>
> --------
> diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c
> index 85f9d14c51..98c22d23f5 100644
> --- a/ui/gtk-gl-area.c
> +++ b/ui/gtk-gl-area.c
> @@ -147,10 +147,21 @@ QEMUGLContext gd_gl_area_create_context(DisplayChangeListener *dcl,
>      gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
>      window = gtk_widget_get_window(vc->gfx.drawing_area);
>      ctx = gdk_window_create_gl_context(window, &err);
> +    if (err) {
> +        g_printerr("Create gdk gl context failed: %s\n", err->message);
> +        g_error_free(err);
> +        return NULL;
> +    }
>      gdk_gl_context_set_required_version(ctx,
>                                          params->major_ver,
>                                          params->minor_ver);
>      gdk_gl_context_realize(ctx, &err);
> +    if (err) {
> +        g_printerr("Realize gdk gl context failed: %s\n", err->message);
> +        g_error_free(err);
> +        g_clear_object(&ctx);
> +        return NULL;
> +    }
>      return ctx;
>  }
>
>
> >
> > Thanks,
> > Li Qiang
> >
> >>
> >
> >> --
> >> 2.18.2
> >>
> >>
> > .
> >
>
diff mbox series

Patch

diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c
index 85f9d14c51..c740a7eb14 100644
--- a/ui/gtk-gl-area.c
+++ b/ui/gtk-gl-area.c
@@ -142,15 +142,14 @@  QEMUGLContext gd_gl_area_create_context(DisplayChangeListener *dcl,
     VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
     GdkWindow *window;
     GdkGLContext *ctx;
-    GError *err = NULL;
 
     gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
     window = gtk_widget_get_window(vc->gfx.drawing_area);
-    ctx = gdk_window_create_gl_context(window, &err);
+    ctx = gdk_window_create_gl_context(window, NULL);
     gdk_gl_context_set_required_version(ctx,
                                         params->major_ver,
                                         params->minor_ver);
-    gdk_gl_context_realize(ctx, &err);
+    gdk_gl_context_realize(ctx, NULL);
     return ctx;
 }