[BRLTTY] Solaris memory leak, maybe windows too
Willie Walker
William.Walker at Sun.COM
Fri Aug 21 05:45:11 EDT 2009
Just to follow up: it's been running on my machine for well over 24hrs
and I've started/stopped Orca many times in that period. It seems very
stable. I'm looking forward to a new tarball release that incorporates
this patch.
Many thanks!
Will
Willie Walker wrote:
> Thanks Dave and Samuel!
>
> It seems to function well. I ran BrlTTY and monitored the pmap -x
> output while I used Orca. The stack remained at a steady 12K and the
> total size remained at a steady 5.5M.
>
> I've had it running for the past hour and have started/stopped Orca many
> times during that period. It seems quite stable.
>
> Many thanks! This was a tricky one to find, and I admire Samuel's
> ability to track it down and Dave's ability to flip over a patch so
> quickly.
>
> Will
>
> Dave Mielke wrote:
>> [quoted lines by Samuel Thibault on 2009/08/20 at 00:57 +0200]
>>
>>> So for variable-length arrays, the standard doesn't say that its
>>> lifetime extends only to the end of the block, thus allowing compilers
>>> to be lazy and just allocate them on the stack and not free them. The
>>> only portable way to free them is thus to return from the function
>>> containing the block. For brltty, that means making the content of the
>>> while(1) loop a function called by runProgram, else its variable-length
>>> arrays keep getting allocated and never freed.
>>
>> Thanks.
>>
>> Will: Please try the attached patch (stack-1.patch). If it works, I'll
>> clean it up a bit and commit it.
>>
>>
>>
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>
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