From: Paolo Bonzini <pbonzini@redhat.com>
To: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Cc: kwolf@redhat.com, aliguori@us.ibm.com, stefanha@gmail.com,
qemu-devel@nongnu.org, blauwirbel@gmail.com, eblake@redhat.com,
afaerber@suse.de
Subject: Re: [Qemu-devel] [PATCH v3 2/5] [RFC] libqblock, user example
Date: Wed, 29 Aug 2012 13:11:39 +0200 [thread overview]
Message-ID: <503DF8EB.3080507@redhat.com> (raw)
In-Reply-To: <1346238308-24513-1-git-send-email-xiawenc@linux.vnet.ibm.com>
Il 29/08/2012 13:05, Wenchao Xia ha scritto:
> + printf("checking aio status for %d times.\n", check_times);
> + while (true == qb_aio_check(broker)) {
> + check_times++;
> + usleep(1);
> + }
> +
Busy waiting is not acceptable, and this is the reason why I had
suggested to keep AIO out of the design for now.
You need to provide an implementation of AIO for either glib or
something else, but this is best done within QEMU first (and only later
moved to libqblock).
Paolo
next prev parent reply other threads:[~2012-08-29 11:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-29 11:05 [Qemu-devel] [PATCH v3 2/5] [RFC] libqblock, user example Wenchao Xia
2012-08-29 11:11 ` Paolo Bonzini [this message]
2012-08-30 1:59 ` Wenchao Xia
2012-08-30 7:46 ` Paolo Bonzini
2012-08-31 2:38 ` Wenchao Xia
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