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From: Paolo Bonzini <pbonzini@redhat.com>
To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: qemu-trivial@nongnu.org, qemu-devel@nongnu.org
Subject: Re: [Qemu-trivial] [Qemu-devel] [PATCH 1/8] notifier: switch to QLIST
Date: Tue, 03 Jan 2012 12:59:54 +0100	[thread overview]
Message-ID: <4F02EDBA.8090808@redhat.com> (raw)
In-Reply-To: <20120103115448.GB28826@stefanha-thinkpad.localdomain>

On 01/03/2012 12:54 PM, Stefan Hajnoczi wrote:
> On Mon, Jan 02, 2012 at 07:00:30PM +0100, Paolo Bonzini wrote:
>>   void notifier_list_add(NotifierList *list, Notifier *notifier)
>>   {
>> -    QTAILQ_INSERT_HEAD(&list->notifiers, notifier, node);
>> +    QLIST_INSERT_HEAD(&list->notifiers, notifier, node);
>>   }
>>
>> -void notifier_list_remove(NotifierList *list, Notifier *notifier)
>> +void notifier_remove(Notifier *notifier)
>
> Why introduce this asymmetry with notifier_list_add() and
> notifier_remove()?  Please make the function names consistent.

Because notifier_list_add adds the notifier to a specific NotifierList; 
notifier_remove removes the notifier from whatever list it is in.

Normally whoever implements notifiers does not have access to the 
NotifierList, so there are wrappers for both notifier_list_add and 
notifier_list_remove.  This patch changes things so that the wrappers 
for notifier_remove are not needed anymore (though this series was 
already big enough, so I left the wrappers in).

Paolo



WARNING: multiple messages have this Message-ID (diff)
From: Paolo Bonzini <pbonzini@redhat.com>
To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: qemu-trivial@nongnu.org, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 1/8] notifier: switch to QLIST
Date: Tue, 03 Jan 2012 12:59:54 +0100	[thread overview]
Message-ID: <4F02EDBA.8090808@redhat.com> (raw)
In-Reply-To: <20120103115448.GB28826@stefanha-thinkpad.localdomain>

On 01/03/2012 12:54 PM, Stefan Hajnoczi wrote:
> On Mon, Jan 02, 2012 at 07:00:30PM +0100, Paolo Bonzini wrote:
>>   void notifier_list_add(NotifierList *list, Notifier *notifier)
>>   {
>> -    QTAILQ_INSERT_HEAD(&list->notifiers, notifier, node);
>> +    QLIST_INSERT_HEAD(&list->notifiers, notifier, node);
>>   }
>>
>> -void notifier_list_remove(NotifierList *list, Notifier *notifier)
>> +void notifier_remove(Notifier *notifier)
>
> Why introduce this asymmetry with notifier_list_add() and
> notifier_remove()?  Please make the function names consistent.

Because notifier_list_add adds the notifier to a specific NotifierList; 
notifier_remove removes the notifier from whatever list it is in.

Normally whoever implements notifiers does not have access to the 
NotifierList, so there are wrappers for both notifier_list_add and 
notifier_list_remove.  This patch changes things so that the wrappers 
for notifier_remove are not needed anymore (though this series was 
already big enough, so I left the wrappers in).

Paolo

  reply	other threads:[~2012-01-03 12:00 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-02 18:00 [Qemu-trivial] [PATCH 0/8] qemu-queue cleanups Paolo Bonzini
2012-01-02 18:00 ` [Qemu-devel] " Paolo Bonzini
2012-01-02 18:00 ` [Qemu-trivial] [PATCH 1/8] notifier: switch to QLIST Paolo Bonzini
2012-01-02 18:00   ` [Qemu-devel] " Paolo Bonzini
2012-01-03 11:54   ` [Qemu-trivial] " Stefan Hajnoczi
2012-01-03 11:54     ` Stefan Hajnoczi
2012-01-03 11:59     ` Paolo Bonzini [this message]
2012-01-03 11:59       ` Paolo Bonzini
2012-01-03 12:09       ` [Qemu-trivial] " Stefan Hajnoczi
2012-01-03 12:09         ` Stefan Hajnoczi
2012-01-02 18:00 ` [Qemu-trivial] [PATCH 2/8] block-migration: switch to QTAILQ Paolo Bonzini
2012-01-02 18:00   ` [Qemu-devel] " Paolo Bonzini
2012-01-02 18:00 ` [Qemu-trivial] [PATCH 3/8] qed: " Paolo Bonzini
2012-01-02 18:00   ` [Qemu-devel] " Paolo Bonzini
2012-01-02 18:00 ` [Qemu-trivial] [PATCH 4/8] ccid: " Paolo Bonzini
2012-01-02 18:00   ` [Qemu-devel] " Paolo Bonzini
2012-01-02 18:00 ` [Qemu-trivial] [PATCH 5/8] qemu-queue: really simplify QSIMPLEQ Paolo Bonzini
2012-01-02 18:00   ` [Qemu-devel] " Paolo Bonzini
2012-01-03 12:04   ` [Qemu-trivial] " Stefan Hajnoczi
2012-01-03 12:04     ` [Qemu-devel] " Stefan Hajnoczi
2012-01-13 16:04   ` [Qemu-trivial] [Qemu-devel] " Peter Maydell
2012-01-13 16:04     ` Peter Maydell
2012-01-02 18:00 ` [Qemu-trivial] [PATCH 6/8] qemu-queue: drop QCIRCLEQ Paolo Bonzini
2012-01-02 18:00   ` [Qemu-devel] " Paolo Bonzini
2012-01-02 18:00 ` [Qemu-trivial] [PATCH 7/8] coroutine: switch to QSIMPLEQ Paolo Bonzini
2012-01-02 18:00   ` [Qemu-devel] " Paolo Bonzini
2012-01-02 18:00 ` [Qemu-trivial] [PATCH 8/8] block: use QSIMPLEQ for the AIO free list Paolo Bonzini
2012-01-02 18:00   ` [Qemu-devel] " Paolo Bonzini
2012-01-03 12:07 ` [Qemu-trivial] [PATCH 0/8] qemu-queue cleanups Stefan Hajnoczi
2012-01-03 12:07   ` [Qemu-devel] " Stefan Hajnoczi
2012-01-13 15:47 ` [Qemu-devel] " Paolo Bonzini

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