Current state CRASHES on load due to pre-alloc hooks with wrong calling
conventions. pushcclosure hook is still enabled with partially disabled
others. Needs all pre-alloc hooks disabled or CCs fixed before use.
Implemented:
- Full 5.1 tri-color incremental GC
- 5.1-style singlestep budget loop (replaces chunk-based approach)
- Per-step rdtsc timing (ZGCStats returns max_step_us, atomic_us)
- Configurable gcstepsize/gcstepmul/gcpause via ZGCTune()
- Pre-alloc GC hooks for 7 API functions (5.1 luaC_checkGC pattern)
- Stress test addon: /gclife, /gcsweep, /gccompare
Broken:
- Pre-alloc hooks have CC mismatches causing immediate crash on load
- pushfstring is cdecl variadic, not fastcall (removed)
- pushstring has ambiguous CC (removed, covered by pushlstring)
- pushcclosure hook still active -- may be causing the crash
- Half-initialized objects cause garbage gcptr under heavy stress
weirdperformance: re-enabled luagc.install() + luastr + luavm
- Per-step rdtsc timing: ZGCStats returns max_step_us and atomic_us
- AllocBench /zgcstats frame shows step/atomic timing with color coding
- /gccompare command for timing forced GC cycles
- Honor lua_setgcthreshold forced collections (collectgarbage() with low
threshold now triggers GC instead of being silently ignored)
- Disable luaalloc in weirdperformance when luagc is active (no conflict)
- Closures go to grayagain (covers all upvalue mutation paths)
Rootgc sweep chunked by temporarily NULLing a next pointer and calling
the original lua_gc_remove_objects on the truncated sublist. Swept
survivors are detached to a separate list to prevent re-sweeping.
Lists reconnected after final chunk.
Birth-mark via binary patch of luaC_link immediate byte (0x6F7B37)
ensures new objects born during sweep survive.
Profiling shows sweep chunks at 0-9ms each (was 225ms avg, 5s worst).
Remaining bottleneck: atomic mark (80ms) + udata/string sweep (44-92ms).
Incremental GC: atomic mark + batched rootgc sweep. Crashes from
objects born white during sweep -- needs birth-mark barrier fix.
Link hook (luaC_link) calling convention verified but interaction
with sweep_ptr at list head needs solving. Disabled pending fix.
AllocBench: realistic addon-like data structures (combat events,
player damage breakdowns with metatables, aura trackers with
closures). Cross-references shared spell/unit caches. These
complex structures reveal GC as the true stutter source -- simple
flat objects don't trigger meaningful GC pauses.
Removed arena pre-reservation (was fragmenting 32-bit address space).
Hook 0x686940 (testAABBFrustum): SSE center/extent P-vertex method replaces
x87 sign-bit corner selection. ~160M cycles in profile, 50% rejection rate.
Hook 0x686180 (FrustumCullBoundingBox 8-corner): SSE replacement transforms
all 8 AABB corners through view-proj, horizon buffer scan with 4-wide test.
Fix behind-camera bug in both FrustumCullBoundingBox variants (0x686000,
0x686180): original returned 0 for behind-camera objects, callers interpret
0 as "visible, render it". Now returns 2 (occluded) when all geometry is
behind the camera (Z < 0 in clip space).
- Restore MSVC ABI (was accidentally GNU since v0.6.0, broke .CRT section)
- Replace game allocator with Windows process heap for filecache and
libdeflate malloc/free - game allocator not initialized during DllMain
when injected via CreateRemoteThread
- Defer timer calibration (Sleep 500ms) to lateInit - blocks under
loader lock during DllMain
- Remove exported malloc/free symbols from DLL
- Eliminate addObject compilation units for SSE files - direct @import
with AVX target instead
- Heap-allocate filecache (was 9.3MB static BSS)
- Strip transform44 of performance/ externs, pure profiling only
- Rename performance/ to weirdperformance/ to match module convention
- Skip default-off modules in all-variants build step
- Remove dead debug vars and stride logging from particle_sse
MarcelineVQ