# Milestone 28: Integration - Perl Descriptor

[TOC]

*   [x] Create test file `perl/t/integration/280_descriptor.t`
*   [ ] TODO: Implement Descriptor-Pool Isolation Stress test.
*   [ ] TODO: Verify Cross-Interpreter Descriptor Migration safety.
*   [ ] TODO: Implement Real-Time Schema Integrity Monitor (Mojo).
*   [x] Tests cover interactions between Protobuf::Descriptor, Protobuf::DescriptorPool, and Protobuf::Arena.
*   [x] Integration tests pass.
*   [x] Create and implement `perl/xt/coro/280_descriptor.t` to test Coro safety.
*   [ ] TODO: Stress concurrent DescriptorPool lookups (100 Coros).
*   [ ] TODO: Verify Coro re-entrancy during descriptor additions.
*   [x] Create and implement `perl/xt/mojo/280_descriptor.t` to test Mojo::IOLoop concurrency safety.
*   [ ] Create and implement `perl/xt/anyevent/280_descriptor.t` to test AnyEvent concurrency safety. (Difficulty: 5/10).

*   **Engineering Excellence (Reach for More):**
    *   [ ] TODO: Implement Massive Concurrency Descriptor Stress (10k coros) for integrated core:
        *   [ ] TODO: Implement `Coro` task pool for parallel `DescriptorPool` lookups. (Difficulty: 3/10)
        *   [ ] TODO: Create randomized schema generator for bulk descriptor registration. (Difficulty: 2/10)
        *   [ ] TODO: Monitor RSS growth and lock contention under 10k coro load. (Difficulty: 2/10)
    *   [ ] TODO: Implement Cross-Interpreter Descriptor Sync for reified wrappers:
        *   [ ] TODO: Implement XS-level global registry for `upb_DefPool` pointers. (Difficulty: 3/10)
        *   [ ] TODO: Create Perl-level `sync()` method for descriptor wrapper reconciliation. (Difficulty: 3/10)
        *   [ ] TODO: Implement atomic broadcast for schema updates across interpreters. (Difficulty: 2/10)
    *   [ ] TODO: Implement Self-Healing Descriptor Migration across heterogeneous interpreters:
        *   [ ] TODO: Implement descriptor serialization for cross-interpreter "wire-transfer". (Difficulty: 3/10)
        *   [ ] TODO: Create automated recovery for partial descriptor sets during migration. (Difficulty: 3/10)
        *   [ ] TODO: Implement "shadow" pool for validating migrated descriptors against source. (Difficulty: 3/10)
*   [ ] Review and update perl/doc/architecture/** documents.