# Milestone 34: Integration - Perl Map

[TOC]

*   [x] Create test file `t/integration/340_map.t`
*   [x] Implement O(1) Map-to-Map Deep Copy. (Skeletal implementation).
*   [ ] TODO: Implement Shared-Arena Map Snapshotting.
*   [ ] TODO: Verify Cross-Interpreter Map Mutation Stress.
*   [x] Tests cover interactions between Protobuf::Map and Protobuf::Message.
*   [x] Integration tests pass.
*   [x] Create and implement `xt/coro/340_map.t` to test Coro safety.
*   [ ] TODO: Stress concurrent map mutation (100 Coros).
*   [ ] TODO: Verify O(1) bulk projection performance in Coro.
*   [x] Create and implement `xt/mojo/340_map.t` to test Mojo::IOLoop concurrency safety.
*   [ ] Create and implement `xt/anyevent/340_map.t` to test AnyEvent concurrency safety. (Difficulty: 5/10).

*   **Engineering Excellence (Reach for More):**
    *   [ ] Implement 10k coro stress for map expansion. (Difficulty: 3/10).
    *   [ ] Profile map lock contention under concurrent load. (Difficulty: 3/10).
    *   [ ] Add shared memory metadata for map arenas. (Difficulty: 3/10).
    *   [ ] Implement cross-interpreter cache entry migration for maps. (Difficulty: 3/10).
    *   [ ] Add background audit for map SV reification. (Difficulty: 3/10).
    *   [ ] Implement Map consistency checks using arena canaries. (Difficulty: 3/10).
*   [x] Review and update perl/doc/architecture/** documents.