The psytest suite was rebuilt into a context-chained set of stages exercising context switching, time sync, guaranteed & best-effort messaging, signals, and catalog retrieval — each stage emitting a PASS/FAIL + perf line with a final aggregated verdict. It now reports full p50/p90/p95/p99/p99.9 tail-latency percentiles, not just averages.
A ground-up CMSDK test framework: one PASS/FAIL line per object, per-test process isolation with timeouts (a crash in one test can’t take down the suite), self-healing shared-memory cleanup, and timestamped performance JSON with %-deltas for automated regression detection. 33 tests, all passing.
The message-routing fast path was rebuilt: a 36KB per-message ring copy replaced with a circular write index, a per-message heap allocation and no-match leak removed from routing, header receive reduced to a single allocation, and six redundant syscalls stripped from every send/read cycle.
The same socket-mode and buffered-read optimisations lifted best-effort UDP messaging to 155,000 messages/second (up from ~107k) with latency down to about 6 microseconds (from 9.3us) — reinforcing Psyclone’s sub-10us real-time profile.
By keeping sockets non-blocking instead of flipping mode around every send (which cost four syscalls per message and raced the receive thread), TCP throughput more than doubled — from ~42k to ~90k msg/s — and per-message latency roughly halved, from 23.8us to ~11us.
Eliminated a class of silent data races: std::map::operator[] on read paths was inserting empty entries under a shared read lock (routing races + unbounded map growth). Fixed across SubscriptionEngine, Node, Monitoring, ServiceManager, InterSystemManager and the Catalogs, plus mutex-leak fixes and a NetworkChannel shutdown deadlock.
Two macOS timeout primitives treated an absolute deadline as a relative countdown, silently turning bounded waits into infinite hangs under contention — the root cause of intermittent 30-second teardown stalls. Now fixed and soak-validated.
Root-caused a heap-corrupting bug affecting the whole product: a destructive pthread_join was being used as a liveness probe, reaping threads so a later authoritative join operated on freed handles. Replaced with non-destructive pthread_kill(h,0) probing — eliminating intermittent shutdown hangs.
Psyclone and its CMSDK core now build, run, and pass the full test suite as a first-class citizen on Apple Silicon and Intel macOS — joining Linux and Windows. The entire distributed pub/sub platform, from shared-memory messaging to the PsyProbe web monitor, is now developed and validated natively on Mac hardware.