[webkit-changes] [WebKit/WebKit] 2d62c3: [libpas] Implement pas_root_visit_conservative_can...

[Yusuke Suzuki]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 2d62c3414e1f589b6fe09124b2012c88012cfda8
      https://github.com/WebKit/WebKit/commit/2d62c3414e1f589b6fe09124b2012c88012cfda8
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2022-11-19 (Sat, 19 Nov 2022)

  Changed paths:
    M Source/bmalloc/libpas/src/libpas/pas_platform.h
    M Source/bmalloc/libpas/src/libpas/pas_root.c
    M Source/bmalloc/libpas/src/libpas/pas_root.h

  Log Message:
  -----------
  [libpas] Implement pas_root_visit_conservative_candidate_pointers_in_address_range
https://bugs.webkit.org/show_bug.cgi?id=248122
rdar://102540311

Reviewed by Mark Lam.

This patch implements a function pas_root_visit_conservative_candidate_pointers_in_address_range. It takes a remote address and
size, then calling a callback for pointers in this region. This allows libpas to report customized pointer scheme including
compact pointers.

* Source/bmalloc/libpas/src/libpas/pas_platform.h:
* Source/bmalloc/libpas/src/libpas/pas_root.c:
(decode_system_compact_pointer):
(pas_root_visit_conservative_candidate_pointers_in_address_range):
* Source/bmalloc/libpas/src/libpas/pas_root.h:

Canonical link: https://commits.webkit.org/256874@main