feat(core, kernel): use a lock-free container in the object provider

[lolito93]

Resolves SEN-1759

[EnriqueParodi]

Hi Manuel, can you please relay my feedback to the author?

The pimpl keeps xenium out of the public header, and the move operations are defaulted out of line with the destructor guarding the moved-from state. Both right.

1. xenium's utils.hpp defines getticks for sparc, x86_64 and _M_AMD64 and #errors otherwise. The error is at file scope, so it fires on include, and utils.hpp arrives through marked_ptr.hpp.

   Nothing here uses the code that needs it. getticks only feeds utils::random(), which is called only from the two kfifo queues, and this PR uses harris_michael_list_based_set.

   The missing case can be added with a PATCH_COMMAND on the FetchContent, and is worth sending upstream since the library is missing it for all of aarch64:

   #elif defined(__aarch64__)
     static inline std::uint64_t getticks(void) {
         std::uint64_t ret;
         __asm__ volatile("mrs %0, cntvct_el0" : "=r"(ret));
         return ret;
     }
   

   We would rather patch it than turn off the arm job, which is our only non-x86 coverage.

2. FetchContent_Declare pulls the tarball from GitHub with no URL_HASH. Everything else comes through conan and is pinned by conan.lock, which has a CI job checking for drift. This sits outside both, and a dependency we plan to remove is the one most likely to be forgotten.

No checks have run on this PR yet.

Thanks!

[luisgutierrezpereda]

Thanks for the review, @EnriqueParodi:

This is the respose:

1. You already applied this changes
2. Since xenium is not available on ConanCenter, adding it via FetchContent is the most straightforward approach for now. The URL_HASH should prevent any tarball drift or security risks mentioned in the comment. I'd prefer to avoid maintaining a custom, manual Conan package recipe for this single dependency, especially since we plan to remove it in the future anyway. The build compiles and works successfully with this configuration

[github-actions]

⚠️ Clang-Tidy found issue(s) with the introduced code (1/1)

[github-actions]

❌ misc-include-cleaner ❌
included header cstddef is not used directly

Suggested change

#include <cstddef>

[github-actions]

❌ cppcoreguidelines-avoid-goto ❌
avoid using goto for flow control

[github-actions]

⚠️ Clang-Tidy found issue(s) with the introduced code (1/1)

[github-actions]

❌ hicpp-avoid-goto ❌
avoid using goto for flow control