From: Uriel Corfa <uriel@corfa.fr>
To: ratheesh k <ratheesh.ksz@gmail.com>
Cc: linux-c-programming@vger.kernel.org
Subject: Re: malloc
Date: Mon, 27 Dec 2010 19:51:27 +0100 [thread overview]
Message-ID: <AANLkTi=UXZrj4uLQbbr7iBERsjPCru2zv_SQsnga2mg+@mail.gmail.com> (raw)
In-Reply-To: <AANLkTi=y+++cekRzdH5WMNWOyRg1=TaA6eAeq1dL9+A0@mail.gmail.com>
On Mon, Dec 20, 2010 at 5:39 AM, ratheesh k <ratheesh.ksz@gmail.com> wrote:
> Is the below statement right or wrong ?
>
> malloc tries to allocate continous memmory space in virtual address
> space. not in physical address space.
Hi,
This is true, but in theory, malloc doesn't have a notion of a virtual
or physical address space. Malloc is defined as : it tries to allocate
a contiguous memory chunk of at least the required size in a
system-defined pool. The question of setting up virtual address
spaces, of lazy allocation of physical pages, etc. is left up to the
underlying OS. In other terms : it's mmap(2) and brk(2) that take care
of this. Malloc relies on them for this kind of questions.
Regards,
--
Uriel Corfa
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next prev parent reply other threads:[~2010-12-27 18:51 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-20 4:39 malloc ratheesh k
2010-12-20 4:43 ` malloc Santosh Sivaraj
2010-12-27 18:51 ` Uriel Corfa [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-06-17 21:26 malloc Earl R. Lapus
2002-06-17 13:48 ` malloc Glynn Clements
2002-06-17 14:32 ` malloc Jason P. Winters
2002-06-17 16:47 ` malloc Mehran Rezaei
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