[3.14] gh-153364: Make frame, coroutine, and task-waiter chain walks iterative and bounded (GH-153365) - #158814
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…terative and bounded (python#153365) * let me declare single limit * use our new limit in process_frame_chain() * add it in parse_async_frame_chain() * parse_coro_chain() * NEWS * async in the message? * test * no race * process_task_awaited_by * process_task_awaited_by limit test * NEWS * MAX_TASK_WAITER_CHAIN_DEPTH * TASK_WAITER_CHAIN_DEPTH in test * TASK_WAITER_CHAIN_DEPTH 256 * prevent the drift with the comment * better naming, better style * MAX_TASK_WAITER_CHAIN_DEPTH comment * task-waiter iterative bfs walk * iterative coro-walk * nicer news * 1 << 14 * comment * unused read_Py_ssize_t * fix tombstones * simplify * correct msg * better test * news for tombstones * left-over from when testing buggy version * redundant new line (cherry picked from commit e0861c6)
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Backport of #153365 to 3.14. Adapts the walks to the monolithic remote-debugging module, preserving the existing 1,024-frame limit and tagged-pointer reads.
The external-inspection suite passes in debug and free-threaded debug builds. The new tests also skip when remote-memory access is denied.
(cherry picked from commit e0861c6)
_remote_debugging: No frame limit inget_async_stack_trace()#153364