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Re: [Qemu-devel] [RFC v1 3/4] util/oslib-win32: Fix up if conditional


From: Alistair Francis
Subject: Re: [Qemu-devel] [RFC v1 3/4] util/oslib-win32: Fix up if conditional
Date: Thu, 29 Jun 2017 09:31:08 -0700

On Thu, Jun 29, 2017 at 5:25 AM, Paolo Bonzini <address@hidden> wrote:
>
>
> On 28/06/2017 01:57, Alistair Francis wrote:
>> Signed-off-by: Alistair Francis <address@hidden>
>> Acked-by: Edgar E. Iglesias <address@hidden>
>> ---
>>
>>  util/oslib-win32.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/util/oslib-win32.c b/util/oslib-win32.c
>> index 7ec0f8e083..a015e1ac96 100644
>> --- a/util/oslib-win32.c
>> +++ b/util/oslib-win32.c
>> @@ -438,7 +438,7 @@ static int poll_rest(gboolean poll_msgs, HANDLE 
>> *handles, gint nhandles,
>>          if (timeout == 0 && nhandles > 1) {
>>              /* Remove the handle that fired */
>>              int i;
>> -            if (ready < nhandles - 1) {
>> +            if ((ready - WAIT_OBJECT_0) < nhandles - 1) {
>>                  for (i = ready - WAIT_OBJECT_0 + 1; i < nhandles; i++) {
>>                      handles[i-1] = handles[i];
>>                  }
>>
>
> WAIT_OBJECT_0 is zero, but I agree it's better to add it.
>
> However, the condition can be rewritten as ready - WAIT_OBJECT_0 + 1 <
> nhandles, which is the same as the first iteration's "i < nhandles".  So
> I'd just remove the "if" and "unindent" the for loop.

Ah, good spot. I'll remove it.

Thanks,
Alistair

>
> Paolo



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