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Date:      Tue, 5 Dec 2000 08:56:45 -0600
From:      "G. Adam Stanislav" <adam@whizkidtech.net>
To:        Stephen McKay <mckay@thehub.com.au>
Cc:        hackers@FreeBSD.ORG
Subject:   Re: pipe
Message-ID:  <20001205085645.A228@whizkidtech.net>
In-Reply-To: <200012040256.eB42upH07905@dungeon.home>; from mckay@thehub.com.au on Mon, Dec 04, 2000 at 12:56:51PM %2B1000
References:  <20001202085127.A301@int80h.org> <3A292D98.E655D755@softweyr.com> <20001203012841.B228@whizkidtech.net> <200012040256.eB42upH07905@dungeon.home>

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On Mon, Dec 04, 2000 at 12:56:51PM +1000, Stephen McKay wrote:
>Using pipes for temporary storage is still a crazy idea.  Pipes can be
>smaller than 8K, depending on the flavour of Unix.

It was just a thought, and it did not work. :) Other flavors of Unix
are not too important in this case: I'm writing a FreeBSD assembly
language tutorial. Though I do discuss portability issues in it.
I'm writing the tutorial, not because I'm the expert (I am, on assembly
language, but not on Unix system calls--yet), but because, in my
experience, it is the best way to learn.

> Use malloc() instead.

Unfortunately, that only works in C. :)

I tried to figure out how to allocate memory, but, so far, was completely
unsuccessful. I studied the source for the C malloc, but did not understand
any of it. It uses something called mmap. I read the man page for mmap,
and was totally frustrated. It talks about mapping files into memory,
but I am not looking for files. It talks about passing an address to the
function. I don't get it... What address? I want it to allocate memory
for me and tell me its address. How am I supposed to know what address
is available???

Thanks,
Adam

-- 
When two do the same, it's not the same
		-- Slovak proverb


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