svn commit: r297190 - head/sys/kern

[Jean-Sébastien Pédron]

On 23/03/2016 18:45, Edward Tomasz Napierala wrote:
>> So maybe callouts are disabled in this situation. If there is a way to
>> detect that, then vt(4) can go back to a "synchronous mode" where it
>> refreshes the screen after each typed character, like it does when ddb
>> is active.
> 
> Looks like that's the case: for some reason the callouts don't work.
> This trivial hack is a (mostly) working workaround:
> 
> Index: svn/head/sys/kern/kern_cons.c
> ===================================================================
> --- svn/head/sys/kern/kern_cons.c	(revision 297210)
> +++ svn/head/sys/kern/kern_cons.c	(working copy)
> @@ -430,6 +430,7 @@ cngets(char *cp, size_t size, int visible)
>  	lp = cp;
>  	end = cp + size - 1;
>  	for (;;) {
> +		pause("meh", 1);

Could you please explain how this works to me? Does calling pause() here
give a chance to interrupt handlers or other threads of running?

-- 
Jean-Sébastien Pédron

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