Migrated from https://git2.unturf.com/engineering/java-topology.git
russell@unturf.com
826a18b121
simutrans-0001: rebuild_linked_connections() append_unique O(C*H^2) MEDIUM 97x
- vector_tpl::append_unique linear scan inside double loop over
goods categories x connections to collect unique connected halts
- fix: inthashtable_tpl for O(1) membership test
simutrans-0002: add_grund() registered_convoys.is_contained O(C*R) MEDIUM 45x
- iterates ALL world convoys, each with linear scan of registered
convoy vector to check membership
- fix: pre-build hash set of registered convoy IDs for O(1) lookup
simutrans-0003: rebuild_connections() consecutive_halts append_unique O(S^2) MEDIUM 24x
- append_unique on consecutive halt vectors per category inside
nested loop over schedules x entries during halt reconnection
- fix: parallel inthashtable_tpl for O(1) dedup
All three defects are in simhalt.cc halt reconnection paths, triggered
whenever schedules change (line added/removed, schedule edited, station
built). In large games with hundreds of halts and convoys, these
compound during reconnection sweeps.
MOAD-0002: welt (karte_t) is a god object but standard Simutrans architecture
MOAD-0003: CLEAN (no thread_local usage)
MOAD-0004: CLEAN (nettool password printf is by-design tool output)
MOAD-0005: CLEAN (save cache uses hashtable, no unsynchronized pattern)
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