Re: Dynamic shared memory areas

On Sat, Dec 3, 2016 at 9:02 AM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> On Fri, Dec 2, 2016 at 2:56 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>> On Fri, Dec 2, 2016 at 1:21 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>>> On Thu, Dec 1, 2016 at 6:33 AM, Thomas Munro
>>> <thomas(dot)munro(at)enterprisedb(dot)com> wrote:
>>>> Please find attached dsa-v8.patch, and also a small test module for
>>>> running random allocate/free exercises and dumping the internal
>>>> allocator state.
>>>
>>> OK, I've committed the main patch.
>>
>> ...but the buildfarm isn't very happy about it.
>>
>> tern complains:
>>
>> In file included from dsa.c:58:0:
>> ../../../../src/include/utils/dsa.h:59:1: error: unknown type name
>> 'pg_atomic_uint64'
>> typedef pg_atomic_uint64 dsa_pointer_atomic;
>>
>> ...but that code is only compiled if #if DSA_POINTER_SIZEOF == 4 fails
>> to be true. And that should always be true unless
>> PG_HAVE_ATOMIC_U64_SUPPORT is defined. So apparently tern claims to
>> PG_HAVE_ATOMIC_U64_SUPPORT but doesn't actually define
>> pg_atomic_uint64? That doesn't seem right.
>
> No, that's not the problem. Just a garden variety thinko in dsa.h.
> Will push a fix presently.

Here's a patch to provide the right format string for dsa_pointer to
printf-like functions, which clears a warning coming from dsa_dump (a
debugging function) on 32 bit systems.

--
Thomas Munro
http://www.enterprisedb.com