linux-kernel - Re: [PATCH 1/2] iio: generic_buffer: Cleanup when receiving signals

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Message-ID: <9de98860-1670-dbc2-b419-8e623deda6ea@intel.com>
Date:	Mon, 23 May 2016 19:10:52 +0300
From:	Crestez Dan Leonard <leonard.crestez@...el.com>
To:	Jonathan Cameron <jic23@...nel.org>,
	Peter Meerwald-Stadler <pmeerw@...erw.net>
Cc:	linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
	Hartmut Knaack <knaack.h@....de>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Daniel Baluta <daniel.baluta@...el.com>
Subject: Re: [PATCH 1/2] iio: generic_buffer: Cleanup when receiving signals

On 05/21/2016 07:28 PM, Jonathan Cameron wrote:
> On 20/05/16 16:55, Peter Meerwald-Stadler wrote:
>>
>>> This also drops all the code freeing string buffers at the end of main.
>>> Memory is freed when the process exits anyway so there's no point in
>>> cluttering the code with all those gotos.
>>
>> well, it helps to see that all memory has been released when looking for 
>> leaks :)
>> e.g. valgrind becomes much less useful when the program exits with tons of 
>> memory still allocated
> Beyond that we are looking at code here that will get cut and paste into other
> peoples applications - they might not pick up that it doesn't clean up properly
> after itself.
> 
> I'd much prefer to keep these explicit frees in place.

I think this would make more sense for a library (like libiio). But
isn't the code in tools/iio merely an a test tool?

I submitted v2 which keeps the frees. It still simplifies them by
relying on stuff like free(NULL) being allowed.

-- 
Regards,
Leonard