Re: SlabCheck leaks memory into TopMemoryContext

On Thu, Jan 16, 2020 at 06:04:32PM +0100, Tomas Vondra wrote:
>On Thu, Jan 16, 2020 at 11:43:34AM -0500, Tom Lane wrote:
>>Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> writes:
>>>The attached fix should do the trick - it pre-allocates the space when
>>>creating the context. There is a bit of complexity because we want to
>>>allocate the space as part of the context header, but nothin too bad. We
>>>might optimize it a bit by using a regular bitmap (instead of just an
>>>array of bools), but I haven't done that.
>>
>>Hmm ... so if this is an array of bools, why isn't it declared bool*
>>rather than char* ? (Pre-existing ugliness, sure, but we might as
>>well fix it while we're here. Especially since you used sizeof(bool)
>>in the space calculation.)
>>
>
>True. Will fix.
>
>>I agree that maxaligning the start point of the array is pointless.
>>
>>I'd write "free chunks in a block" not "free chunks on a block",
>>the latter seems rather shaky English. But that's getting picky.
>>
>>LGTM otherwise.
>>
>
>OK. Barring objections I'll push and backpatch this later today.
>

I've pushed and backpatched this all the back back to 10.

regards

--
Tomas Vondra http://www.2ndQuadrant.com
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