ASan (Linux CI) caught a heap-use-after-free in
JobSystemThreadPool::releaseDependents (voxel.world.cross_chunk_seam_culled):
completeJob set completionDone=true and released the mutex, then iterated
job->dependents. A waiter could acquire the mutex in between, see
completionDone, return from wait() and delete the heap job (owned by the
caller), freeing the dependents vector mid-iteration.
Move releaseDependents inside the same critical section and set
completionDone last, so no waiter can observe completion before the
dependents are released. Add a stress regression test that waits on a
completed child and deletes it immediately, 200 iterations.
Fill the last thread-module API gaps: blocking demand() and cross-thread
postMain() into the Event queue (same-thread, empty-name throw, worker
thread). 46/46 thread bundle cases pass locally on win32-debug. Update
docs/dev/测试覆盖.md: thread row to '已展开' with a full API detail table.
- JobSystem abstraction over the existing ThreadPool worker pool; the
factory in JobSystem.cpp is the single backend switch point (TBB later).
- Job carries a dependency count and completion callback so a render graph
can be wired on top without rewriting the scheduler.
- parallel_for(first, last, body, chunk) with static partitioning, auto
chunk sizing, and a join handle; task_group provides fork/join with
help-execution so workers can wait without deadlocking.
- Per-frame arena (beginFrame/endFrame) for frame-scoped jobs: no per-frame
new/delete; frame jobs are recycled by the arena.
- Thread module exposes a shared engine JobSystem (getJobSystem).
- VoxelWorld::remeshDirty now uses parallel_for instead of raw std::thread.
- 24 new zeroerr tests in test/thread.cpp; verified with a standalone MSVC
harness (24 cases x 30 runs, no flakes).
- Added the system module to provide OS, CPU, RAM, wall clock, sleep, clipboard, battery, and GPU information.
- Enhanced the thread module to support thread pools, tasks, and named channels for inter-thread communication.
- Updated documentation to reflect the new features in the system and thread modules, including usage examples and API references.
- Modified CMakeLists.txt to include the new system and thread modules, ensuring proper build configurations.
- Updated load.nut script to initialize the new system and thread functionalities.
Co-authored-by: Cursor <cursoragent@cursor.com>
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