xenia-rs

fabi/xenia-rs

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Author	SHA1	Message	Date
MechaCat02	ad45873a1b	ITERATE-2.V: scheduler priority aging closes 18-day AUDIT-049 wedge Priority aging in xenia-cpu/scheduler.rs:pick_runnable (effective_priority = base + age_bonus(now_round - last_run_round), capped at +31, AGING_ROUNDS_PER_BONUS=1). Strict-priority was parking priority=0 threads behind CPU-bound priority=15 audio mixer (sub_824D1328 guest spinwait at PC=0x824d1404 on CPU5). Aging eventually picks the starved thread, breaking the producer-consumer cycle that caused 5-tid wedge at PC=0x824ac578 since AUDIT-049 (10 May). Cascade observed: tid=13 clean exit; events 121K -> 13M (107x); last host_ns 767ms -> 51,011ms (66x); 8 new threads spawn; VdSwap 1 -> 2. Complete two-day iterate sequence (2026-05-27 -> 2026-05-28): - 2.F: VdSwap drain timeout 900ms -> 1ms (xenia-gpu/handle.rs); 876x perf win on VdSwap kernel callback - 2.H: vA0000000 physical heap bucket added (state.rs, exports.rs); ctx_ptrs now in 0xA0000000-0xBFFFFFFF range matching canary - 2.L: Phase-A diff harness categorized [return_value mismatch], [status mismatch], [args_resolved.path mismatch] tags (tools/diff-events/diff_events.py); closes reading-error #41 (silent test-harness state leak invalidating trace diffs) - 2.M: always-on exit-thread-state.json sibling to Phase-A JSONL (event_log.rs + xenia-app/main.rs); closes reading-error #42 (Phase-A blind to blocked-forever waits) - 2.Q: signal.match kernel instrumentation in NtSetEvent / NtReleaseSemaphore / KeSetEvent / KeReleaseSemaphore (exports.rs); emits target_handle + waiter_count + waiter_tids - 2.T: wake.requested kernel instrumentation in wake_eligible_waiters (exports.rs); emits target_tid + transition + new_state - 2.V: scheduler priority aging (xenia-cpu/scheduler.rs) [keystone] Plus accumulated WIP from earlier May (contention_manifest, phase_b_snapshot, xam/xaudio enhancements, analysis db, xex loader, xenia-app main loop, etc.). Audit-runs/ artifacts remain untracked per project convention. Tests: 300 xenia-cpu / 227 xenia-kernel / 5 xenia-app / 19 xenia-path / 30+ smaller suites -- all PASS, 0 regressions. Determinism preserved (2x cold runs bit-identical at 13,003,881 events post-2.V). Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>	2026-05-29 07:27:26 +02:00
MechaCat02	5f0d6487ea	xenia-kernel: HLE expansion, scheduler integration, audit + UI bridge Major HLE buildout in exports.rs: KeInitializeSemaphore now seeds count/limit, XexGet{Module,Procedure}Address use distinct HMODULE_XBOXKRNL/HMODULE_XAM pseudo-handles with a reverse (ModuleId,ordinal)→thunk_addr map, plus sweeping additions across sync primitives, file I/O, semaphores, events, threads, and allocator paths needed to advance Sylpheed past VdSwap=2. New modules: - thread.rs — ThreadRef + per-thread suspension/wake plumbing - interrupts.rs — IRQ delivery, pending-IRQ slots, IPI helpers - path.rs — guest path normalization (D:\\, game:\\, etc.) - audit.rs — --trace-handles harness backing the handle audit - ui_bridge.rs — kernel-side endpoint of the xenia-ui bridge (input snapshots, framebuffer publish handles) state.rs grows to own the HW-slot scheduler state, the new audit / UI bridge handles, and the per-handle reverse maps. xam.rs and objects.rs follow suit for the HLE additions. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-05-01 16:29:00 +02:00

Author

SHA1

Message

Date

MechaCat02

ad45873a1b

ITERATE-2.V: scheduler priority aging closes 18-day AUDIT-049 wedge

Priority aging in xenia-cpu/scheduler.rs:pick_runnable
(effective_priority = base + age_bonus(now_round - last_run_round),
capped at +31, AGING_ROUNDS_PER_BONUS=1). Strict-priority was parking
priority=0 threads behind CPU-bound priority=15 audio mixer
(sub_824D1328 guest spinwait at PC=0x824d1404 on CPU5). Aging
eventually picks the starved thread, breaking the producer-consumer
cycle that caused 5-tid wedge at PC=0x824ac578 since AUDIT-049 (10 May).

Cascade observed: tid=13 clean exit; events 121K -> 13M (107x); last
host_ns 767ms -> 51,011ms (66x); 8 new threads spawn; VdSwap 1 -> 2.

Complete two-day iterate sequence (2026-05-27 -> 2026-05-28):
- 2.F: VdSwap drain timeout 900ms -> 1ms (xenia-gpu/handle.rs); 876x
       perf win on VdSwap kernel callback
- 2.H: vA0000000 physical heap bucket added (state.rs, exports.rs);
       ctx_ptrs now in 0xA0000000-0xBFFFFFFF range matching canary
- 2.L: Phase-A diff harness categorized [return_value mismatch],
       [status mismatch], [args_resolved.path mismatch] tags
       (tools/diff-events/diff_events.py); closes reading-error #41
       (silent test-harness state leak invalidating trace diffs)
- 2.M: always-on exit-thread-state.json sibling to Phase-A JSONL
       (event_log.rs + xenia-app/main.rs); closes reading-error #42
       (Phase-A blind to blocked-forever waits)
- 2.Q: signal.match kernel instrumentation in NtSetEvent /
       NtReleaseSemaphore / KeSetEvent / KeReleaseSemaphore
       (exports.rs); emits target_handle + waiter_count + waiter_tids
- 2.T: wake.requested kernel instrumentation in wake_eligible_waiters
       (exports.rs); emits target_tid + transition + new_state
- 2.V: scheduler priority aging (xenia-cpu/scheduler.rs) [keystone]

Plus accumulated WIP from earlier May (contention_manifest,
phase_b_snapshot, xam/xaudio enhancements, analysis db, xex loader,
xenia-app main loop, etc.). Audit-runs/ artifacts remain untracked
per project convention.

Tests: 300 xenia-cpu / 227 xenia-kernel / 5 xenia-app / 19 xenia-path
/ 30+ smaller suites -- all PASS, 0 regressions. Determinism preserved
(2x cold runs bit-identical at 13,003,881 events post-2.V).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-05-29 07:27:26 +02:00

MechaCat02

5f0d6487ea

xenia-kernel: HLE expansion, scheduler integration, audit + UI bridge

Major HLE buildout in exports.rs: KeInitializeSemaphore now seeds
count/limit, XexGet{Module,Procedure}Address use distinct
HMODULE_XBOXKRNL/HMODULE_XAM pseudo-handles with a reverse
(ModuleId,ordinal)→thunk_addr map, plus sweeping additions across
sync primitives, file I/O, semaphores, events, threads, and
allocator paths needed to advance Sylpheed past VdSwap=2.

New modules:
  - thread.rs   — ThreadRef + per-thread suspension/wake plumbing
  - interrupts.rs — IRQ delivery, pending-IRQ slots, IPI helpers
  - path.rs     — guest path normalization (D:\\, game:\\, etc.)
  - audit.rs    — --trace-handles harness backing the handle audit
  - ui_bridge.rs — kernel-side endpoint of the xenia-ui bridge
                   (input snapshots, framebuffer publish handles)

state.rs grows to own the HW-slot scheduler state, the new audit /
UI bridge handles, and the per-handle reverse maps. xam.rs and
objects.rs follow suit for the HLE additions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-01 16:29:00 +02:00

2 Commits