At Thu, 24 Jan 2019 01:02:14 -0500, Tom Lane wrote in
<24744.1548309...@sss.pgh.pa.us>
> Kyotaro HORIGUCHI writes:
> > With the attached patch, external modules are loaded RTLD_LOCAL
> > by default. PG_MODULE_EXPORT_SYMBOL in a module source files let
> > it loaded RTLD_GLOBAL. I suppose this is
Kyotaro HORIGUCHI writes:
> With the attached patch, external modules are loaded RTLD_LOCAL
> by default. PG_MODULE_EXPORT_SYMBOL in a module source files let
> it loaded RTLD_GLOBAL. I suppose this is the change with the
> least impact on existing modules because I believe most of them
> don't ne
Hello.
At Mon, 26 Feb 2018 23:50:41 +0200, Ants Aasma wrote in
> On Mon, Feb 26, 2018 at 11:28 PM, Andres Freund wrote:
> > So RTLD_LOCAL is out of the question, but I think we can get a good bit
> > of the benefit by either specifying -Wl,-Bsymbolic at shlib build time,
> > or RTLD_DEEPBIND a
On Mon, Feb 26, 2018 at 11:28 PM, Andres Freund wrote:
> So RTLD_LOCAL is out of the question, but I think we can get a good bit
> of the benefit by either specifying -Wl,-Bsymbolic at shlib build time,
> or RTLD_DEEPBIND at dlopen() time. Either leads to the opened shared
> library effectively b
On 2018-02-23 11:05:23 -0500, Tom Lane wrote:
> Andres Freund writes:
> > I think using RTLD_LOCAL on most machines would be a much better
> > idea. I've not found proper explanations why GLOBAL is used. We started
> > using it ages ago, with [2], but that commit contains no explanation,
> > and a
Andres Freund writes:
> First question:
> Why do we currently use RTLD_GLOBAL loading extension libraries, but
> take pains ([1]) to make things work without RTLD_GLOBAL.
As mentioned in that very message, the point was better missing-symbol
error detection, not RTLD_GLOBAL/LOCAL per se.
> I thi
Hi,
On 2018-02-22 23:11:07 -0800, Andres Freund wrote:
> I think using RTLD_LOCAL on most machines would be a much better
> idea. I've not found proper explanations why GLOBAL is used. We started
> using it ages ago, with [2], but that commit contains no explanation,
> and a quick search didn't sh
Hi Peter, All,
First question:
Why do we currently use RTLD_GLOBAL loading extension libraries, but
take pains ([1]) to make things work without RTLD_GLOBAL. It seems like
it'd be both safer to RTLD_LOCAL on platforms supporting it (or
equivalent), as well as less error-prone because we'd be les
