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goldeneye-pc-port/docs
James Dansereau 07b25f4b45 fix(D285): lock sndHandleEvent's preempt-scan against sndSetupSound's writer
sndHandleEvent's pool-exhaustion preempt-scan read/walked the shared
D_800243E4 active-ALSoundState list with no osSetIntMask lock, while
sndSetupSound (the list's insert path, reached from sndPlaySfx calls
across 15 game files) already locks it -- an asymmetric-locking gap,
the same D4/D147/D152 "N64 interrupts-off isn't a real lock on PC"
class. Wraps the scan in the identical lock/unlock pair sndSetupSound
already uses, unconditionally (no #ifdef PORT, matching that function's
own style -- osSetIntMask is genuine N64 API and the port's shim is a
process-wide recursive lock, safe to nest). Audited the rest of the
function: the scan is the only D_800243E4 touch point in it.

Build green; -level_09/-level_20 unregressed (1400+ frames, no crash,
no D152 lock-stuck warnings). Not yet gdb/live-confirmed against a
real reproduced crash -- a GE_INPUTSCRIPT-driven stress attempt this
session didn't visibly activate the scripted-input harness for a
reason not root-caused; the honest bar met here is "correct by D4/D152
precedent, build/sweep-clean," not "reproduced-then-fixed."

Claude-Session: https://claude.ai/code/session_01KwZViAFaXua3PKgHHjNgvi
2026-09-15 19:35:22 -04:00
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