From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
Emanuele Giuseppe Esposito <eesposit@redhat.com>,
qemu-block@nongnu.org
Cc: John Snow <jsnow@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
Kevin Wolf <kwolf@redhat.com>, Max Reitz <mreitz@redhat.com>,
qemu-devel@nongnu.org
Subject: Re: [PATCH 4/6] progressmeter: protect with a mutex
Date: Wed, 12 May 2021 10:09:01 +0300 [thread overview]
Message-ID: <a31ca815-0fe5-75fd-013e-8fd096b33513@virtuozzo.com> (raw)
In-Reply-To: <a8785afb-a7a3-0100-5c46-32914a273b63@redhat.com>
11.05.2021 15:28, Paolo Bonzini wrote:
> On 10/05/21 13:28, Vladimir Sementsov-Ogievskiy wrote:
>>
>>
>> Could we instead add a c file and add the structure private? Then we'll have progress_new() and progress_free() APIs instead.
>>
>> This way, it would be a lot simpler to control that nobady use structure fields directly.
>
> I don't know... I prefer embedding structs to heap allocation.
>
I agree that embedding looks better from allocation point of view.. But IMHO encapsulation guarantee of private structure is better feature. Especially when we have getter/setter methods. Even the patch itself is example: to review this carefully, I should somehow check that every use of the structure is updated (grepping the code, or maybe change field name and recompile, to catch every occurrence of it).. And if patch makes structure private and adds setters/getters, it can be reviewed without applying.
And we have to call _init/_destroy anyway, so it's not more complex to call _new/_free instead.
--
Best regards,
Vladimir
next prev parent reply other threads:[~2021-05-12 7:10 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-10 8:59 [PATCH 0/6] block-copy: make helper APIs thread safe Emanuele Giuseppe Esposito
2021-05-10 8:59 ` [PATCH 1/6] ratelimit: treat zero speed as unlimited Emanuele Giuseppe Esposito
2021-05-10 11:00 ` Vladimir Sementsov-Ogievskiy
2021-05-10 8:59 ` [PATCH 2/6] block-copy: let ratelimit handle a speed of 0 Emanuele Giuseppe Esposito
2021-05-10 11:06 ` Vladimir Sementsov-Ogievskiy
2021-05-10 8:59 ` [PATCH 3/6] blockjob: " Emanuele Giuseppe Esposito
2021-05-10 11:17 ` Vladimir Sementsov-Ogievskiy
2021-05-10 8:59 ` [PATCH 4/6] progressmeter: protect with a mutex Emanuele Giuseppe Esposito
2021-05-10 11:28 ` Vladimir Sementsov-Ogievskiy
2021-05-10 16:52 ` Emanuele Giuseppe Esposito
2021-05-10 17:17 ` Vladimir Sementsov-Ogievskiy
2021-05-10 17:57 ` Emanuele Giuseppe Esposito
2021-05-11 12:28 ` Paolo Bonzini
2021-05-12 7:09 ` Vladimir Sementsov-Ogievskiy [this message]
2021-05-12 15:53 ` Stefan Hajnoczi
2021-05-10 8:59 ` [PATCH 5/6] co-shared-resource: " Emanuele Giuseppe Esposito
2021-05-10 11:40 ` Vladimir Sementsov-Ogievskiy
2021-05-11 8:34 ` Paolo Bonzini
2021-05-12 15:44 ` Stefan Hajnoczi
2021-05-12 18:30 ` Paolo Bonzini
2021-05-14 14:10 ` Emanuele Giuseppe Esposito
2021-05-14 14:26 ` Vladimir Sementsov-Ogievskiy via
2021-05-14 14:32 ` Emanuele Giuseppe Esposito
2021-05-14 15:30 ` Vladimir Sementsov-Ogievskiy via
2021-05-14 17:28 ` Emanuele Giuseppe Esposito
2021-05-14 21:15 ` Vladimir Sementsov-Ogievskiy via
2021-05-14 21:53 ` Emanuele Giuseppe Esposito
2021-05-15 7:11 ` Vladimir Sementsov-Ogievskiy via
2021-05-14 17:55 ` Paolo Bonzini
2021-05-10 8:59 ` [PATCH 6/6] aiopool: " Emanuele Giuseppe Esposito
2021-05-10 11:56 ` Vladimir Sementsov-Ogievskiy
2021-05-11 8:34 ` Paolo Bonzini
2021-05-12 15:19 ` Stefan Hajnoczi
2021-05-10 10:55 ` [PATCH 0/6] block-copy: make helper APIs thread safe Vladimir Sementsov-Ogievskiy
2021-05-12 14:24 ` Stefan Hajnoczi
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