No description
Rongsong Shen
d67ccc2280
test_persist_truncate.c's three continuation tests called commit_engine_fini(&ce) before persist_stop(p), backwards from commit_engine_fini's own documented contract (persist_stop must run first). With the fsync_worker flusher thread still alive, it could be mid-flight in commit_on_durable_advance -> commit_advance_locked (no lock held) while commit_engine_fini concurrently destroyed ce->lock/ce->cond and nulled ce->p -- a TOCTOU race where the guard check reads ce->p as valid but a later re-read observes NULL, SEGV at exactly offsetof(persist_t, committed_lsn) = 0x38. This was misdiagnosed as caused by g_drive_async_demotion/catchup_offload (bug-1450/1451): flipping those flags only perturbed thread-scheduling timing enough to trigger the always-latent race more reliably. The same crash signature was independently observed on 2026-07-07, before those flags existed, proving they were never causal. Fix: call persist_stop(p) before commit_engine_fini(&ce) in all three tests. teardown_persist's own internal persist_stop becomes a safe no-op on the second call. No production code changed. Verified: full ASAN controller_unit_test suite, 976/976 tests, 6 runs (1 via meson + 5 standalone direct binary runs), zero ASAN reports. test_demotion_convergence.c has the same commit_engine_fini-before- persist_stop ordering (line 233/235) against a real persist_start'd fixture -- not fixed here, flagged for a follow-up sweep. |
||
|---|---|---|
| .claude | ||
| .kiro | ||
| .wolf | ||
| docs/superpowers/plans | ||
| ha/data | ||
| raft | ||
| reports | ||
| src | ||
| .clang-format | ||
| .gitignore | ||
| .mcp.json | ||
| .opencode.json | ||
| CLAUDE.md | ||
| README.md | ||
| uninstall-code-review-graph.sh | ||
1. commit 规则
- 每个人 fork 自己的 branch， 从自己的 branch 做 PR，review 完再 commit
2. code format
2.1. C
推荐使用 clang-format，公共配置放在源码里面 xce/.clang-format
（理论上直接使用源码里面 xce/.clang-format 文件格式不会变）
2.1.1. vscode 可以在配置中加上如下内容
"C_Cpp.clang_format_style": "WebKit",
"C_Cpp.clang_format_fallbackStyle": "WebKit",
2.1.2. vim & emacs
clang-format -style="{BasedOnStyle: webkit}" -i XX.c
2.2. golang
使用默认 gofmt
3. build environment and build (example of ubuntu)
3.1 build environment
- Install nix package management tool
sh <(curl -L https://nixos.org/nix/install) --daemon
- Edit /etc/nix/nix.conf to make sure
experimental-features = nix-command flakes
sandbox = true
sandbox-fallback = false
substituters = https://mirrors.ustc.edu.cn/nix-channels/store https://cache.nixos.org https://cache.nixos.org/
trusted-users = root <your account>
make sure that you have restarted nix-daemon service after you have changed /etc/nix/nix.conf
- Install socat and config ssh (for clone by ssh protocol)
nix profile add nixpkgs#socat
.ssh/config
Host gitea.shenrs.eu
HostName gitea.shenrs.eu
IdentityFile ~/.ssh/id_ed25519
ProxyCommand socat - openssl-connect:gitea.shenrs.eu:2022,snihost=gitea.shenrs.eu,verify=0
3.2 checkout source code
3.3 build (for package and release)
cd xce/src
# for build debug version
nix build --option sandbox false .#xcecore_debug
# for normal build
nix build --option sandbox false .#xcecore
You can find the generated binaries at =result= directory
3.4 build (for daily develop)
cd xce/src
nix develop
# using meson to generated build configuration (debug and address sanitize)
meson setup build --buildtype=debug -Db_sanitize=address
# run meson to build
meson compile -C build
# The generated files will be in build/
3.5 build AppImage package
cd xce/src
nix bundle --bundler github:ralismark/nix-appimage --option sandbox false .#xce
This will create all in one AppImage file which contains everything for package delivery.
4. misc
4.1. Windows remap ctrl and alt key
create a reg file, e.g. remapkey.reg
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout]
"Scancode Map"=hex:00,00,00,00,00,00,00,00,05,00,00,00,38,00,1d,00,1d,00,38,00,38,e0,1d,e0,1d,e0,38,e0,00,00,00,00
then double click remapkey.reg to import it. Restart OS.