llvm dev - Jul 2020 - ORC JIT Weekly #18 -- TargetProcessControl updates for library loading / searching.

Hi All,

This was a quiet week -- the only significant ORC change was to the new
TargetProcessControl API [1], which acquired the ability to load libraries
and search for symbols in the target process in [2]. A new
TargetProcessControl based definition generator is included to take
advantage of this, and the LLJITWithTargetProcessControl example has been
updated to include it.

Regards,
Lang.

[1] http://lists.llvm.org/pipermail/llvm-dev/2020-July/143532.html
[2]
https://github.com/llvm/llvm-project/commit/13ad00be98e10bb08aeb6eacf8f3aebff653578c
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Hi Lang

Thanks for the update! Is there a conceptual difference between the old:
DynamicLibrarySearchGenerator::GetForCurrentProcess(<SystemManglingPrefix>)

and the newly added TCP-based one (when applied to the own process):
TPCDynamicLibrarySearchGenerator::GetForTargetProcess(SelfTargetProcessControl::Create())

Or can we just assume it the preferred, more generalized approach for
constructing definition generators from now on?
> Near term ORC work will focus on expanding TargetProcessControl, improving
> JITLink's ELF support, ...
Sounds great!

Cheers
Stefan

On 28/07/2020 06:01, Lang Hames wrote:
> Hi All,
>
> This was a quiet week -- the only significant ORC change was to the
> new TargetProcessControl API [1], which acquired the ability to load
> libraries and search for symbols in the target process in [2]. A new
> TargetProcessControl based definition generator is included to take
> advantage of this, and the LLJITWithTargetProcessControl example has
> been updated to include it.
>
> Regards,
> Lang.
>
> [1] http://lists.llvm.org/pipermail/llvm-dev/2020-July/143532.html
> [2]
>
https://github.com/llvm/llvm-project/commit/13ad00be98e10bb08aeb6eacf8f3aebff653578c
>
-- 
https://flowcrypt.com/pub/stefan.graenitz at gmail.com

Hi Stefan,

Thanks for the update! Is there a conceptual difference between the
old:
>
DynamicLibrarySearchGenerator::GetForCurrentProcess(<SystemManglingPrefix>)
>

and the newly added TCP-based one (when applied to the own
process):
>
>
TPCDynamicLibrarySearchGenerator::GetForTargetProcess(SelfTargetProcessControl::Create())

There is no conceptual difference. The TargetProcessControl method needs
some road-testing, but should eventually be the preferred method.

DynamicLibrarySearchGenerator will remain available for quite a while for
the sake of clients who can't use TargetProcessControl, e.g. people using
RuntimeDyld with a custom memory manager.

Regards,
Lang.

On Tue, Jul 28, 2020 at 2:50 AM Stefan Gränitz <stefan.graenitz at
gmail.com>
wrote:
> Hi Lang
>
> Thanks for the update! Is there a conceptual difference between the old:
>
DynamicLibrarySearchGenerator::GetForCurrentProcess(<SystemManglingPrefix>)
>
> and the newly added TCP-based one (when applied to the own process):
>
>
TPCDynamicLibrarySearchGenerator::GetForTargetProcess(SelfTargetProcessControl::Create())
>
> Or can we just assume it the preferred, more generalized approach for
> constructing definition generators from now on?
>
> > Near term ORC work will focus on expanding TargetProcessControl,
> improving
> > JITLink's ELF support, ...
>
> Sounds great!
>
> Cheers
> Stefan
>
> On 28/07/2020 06:01, Lang Hames wrote:
> > Hi All,
> >
> > This was a quiet week -- the only significant ORC change was to the
> > new TargetProcessControl API [1], which acquired the ability to load
> > libraries and search for symbols in the target process in [2]. A new
> > TargetProcessControl based definition generator is included to take
> > advantage of this, and the LLJITWithTargetProcessControl example has
> > been updated to include it.
> >
> > Regards,
> > Lang.
> >
> > [1] http://lists.llvm.org/pipermail/llvm-dev/2020-July/143532.html
> > [2]
> >
>
https://github.com/llvm/llvm-project/commit/13ad00be98e10bb08aeb6eacf8f3aebff653578c
> >
> --
> https://flowcrypt.com/pub/stefan.graenitz at gmail.com
>
>
>
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