linux-kernel - Re: [PATCH] type safe allocator

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Message-ID: <Pine.LNX.4.64.0708021417400.24572@fbirervta.pbzchgretzou.qr>
Date:	Thu, 2 Aug 2007 14:24:44 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...putergmbh.de>
To:	Alexey Dobriyan <adobriyan@...il.com>
cc:	Miklos Szeredi <miklos@...redi.hu>, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	torvalds@...ux-foundation.org
Subject: Re: [PATCH] type safe allocator


On Aug 2 2007 16:04, Alexey Dobriyan wrote:
>On 8/2/07, Miklos Szeredi <miklos@...redi.hu> wrote:
>>   fooptr = kmalloc(sizeof(struct foo), ...);
>
>Key word is "traditional". Good traditional form which even half-competent
>C programmers immediately parse in retina.

And being aware of the potential type-unsafety makes programmers more
careful IMHO.

>
>> +/**
>> + * alloc_struct - allocate given type object
>> + * @type: the type of the object to allocate
>> + * @flags: the type of memory to allocate.
>> + */
>> +#define alloc_struct(type, flags) ((type *) kmalloc(sizeof(type), flags))

>someone will write alloc_struct(int, GFP_KERNEL), I promise.

and someone else will write

	struct complexthing foo;
	alloc_struct(foo, GFP_KERNEL);



	Jan
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