From: Richard Yang <weiyang@linux.vnet.ibm.com>
To: Dmitry Zamaruev <dmitry.zamaruev@gmail.com>
Cc: Richard Yang <weiyang@linux.vnet.ibm.com>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Why QEMUClock is defined in qemu-timer.c?
Date: Wed, 1 Feb 2012 09:33:45 +0800 [thread overview]
Message-ID: <20120201013345.GA3929@richard> (raw)
In-Reply-To: <CAGvhtCDut5czJZXC6Sm4LnDFU3k3dsQ9Ysti7L1hm46vA1OK9g@mail.gmail.com>
On Tue, Jan 31, 2012 at 12:00:30PM +0200, Dmitry Zamaruev wrote:
>This is used in many places.
>Maybe to simulate 'private' variables and access methods like in C++.
>
>If you define structure in .c file then every function that works with
>this structure must reside in same file. And any other code to use
>structure must use access-functions (api) to alter it and not directly
>(compiler will issue error about incomplete type).
>This way you could change structure or internal data handling without
>affecting external code that relies on "stable api functions".
Thanks for your explanation.
I learned a lot.
--
Richard Yang
Help you, Help me
prev parent reply other threads:[~2012-02-01 1:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-31 5:55 [Qemu-devel] Why QEMUClock is defined in qemu-timer.c? Richard Yang
2012-01-31 6:12 ` Mulyadi Santosa
2012-01-31 6:35 ` Richard Yang
2012-01-31 10:00 ` Dmitry Zamaruev
2012-02-01 1:33 ` Richard Yang [this message]
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