[PATCH] libx11-1.6.7: Flush buffer in time for global (un)lock xserver operation

[Chen Gang]

Oh, sorry, XFlush should be replaced by _XFlush.

On 2019/11/27 上午11:47, Chen Gang wrote:
> The global (un)lock xserver operations will have effect to the whole
> system, and all the other gui apps have to be blocked, so the operations
> should not be buffered, or may cause sync issue, e.g. reboot machine.
> 
> Signed-off-by: Chen Gang <chengang at emindsoft.com.cn>
> ---
>  src/GrServer.c  | 1 +
>  src/UngrabSvr.c | 1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/src/GrServer.c b/src/GrServer.c
> index c4c62be..59ed03a 100644
> --- a/src/GrServer.c
> +++ b/src/GrServer.c
> @@ -35,6 +35,7 @@ XGrabServer (register Display *dpy)
>  	_X_UNUSED register xReq *req;
>  	LockDisplay(dpy);
>          GetEmptyReq(GrabServer, req);
> +	XFlush(dpy); /* For Global (un)lock ops must be sent quickly */
>  	UnlockDisplay(dpy);
>  	SyncHandle();
>  	return 1;
> diff --git a/src/UngrabSvr.c b/src/UngrabSvr.c
> index 20ad9aa..4b0ffca 100644
> --- a/src/UngrabSvr.c
> +++ b/src/UngrabSvr.c
> @@ -37,6 +37,7 @@ XUngrabServer (
> 
>          LockDisplay(dpy);
>          GetEmptyReq(UngrabServer, req);
> +       XFlush(dpy); /* For Global (un)lock ops must be sent quickly */
>          UnlockDisplay(dpy);
>  	SyncHandle();
>  	return 1;
>