Re: [MiNT] vim slow

[Alan Hourihane <alanh@fairlite.co.uk>]

On 30/09/14 10:49, Vincent Rivière wrote:
> On 30/09/2014 10:15, Alan Hourihane wrote:
>> That's why the system call modifies 0 to become 1. And that's also why I
>> say when it is 0, to return without the timeout.
>
> I don't fully understand the parameters. I will have to carefully read
> the documentation of poll() and select().
>
> Anyway, when the user program (such as vim) asks:
> "Is there any character present on stdin? No wait, please."
> and there is no pending character,
> then Fpoll() should return immediately and quickly.
>
> The problem is very visible in vim, I wonder which other programs
> could be affected by similar slowness...
> It would be a great surprise if the future fix could boost the whole
> kernel.
>

Does this patch fix things for you Vincent ?

Alan.

Index: sys/dosfile.c
===================================================================
RCS file: /mint/freemint/sys/dosfile.c,v
retrieving revision 1.42
diff -u -r1.42 dosfile.c
--- sys/dosfile.c	7 Mar 2014 09:04:59 -0000	1.42
+++ sys/dosfile.c	30 Sep 2014 09:59:24 -0000
@@ -1258,7 +1258,7 @@
 	if (timeout == ~0)
 		timeout = 0;
 	else if (timeout == 0)
-		timeout = 1;
+		goto cancel;
 
 	if (count == 0)
 	{