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feature: 初步的系统编程 - #279
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feature: 初步的系统编程#279
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- todo/017 领域8 路线重写:一篇=一个可实验的核心问题,镜像三分类入计划, ch00 收敛为 2 篇概念篇(契约工具唯一定义处挪入),信号拆 2 篇、进程拆 3 篇, Windows 对照/独有篇槽位补齐(IOCP/SEH/Console/ACL/注册表), 记录既定拆分(页缓存篇、SEH 篇)与存量 5 篇补课清单,ch07 记工具对账 - 新增决策记录 D6(镜像制与粒度口径) - todo/020 补 syskit 与异步事件循环两个项目条目 + 依赖图一行 - 失链修复:021-projects.md → 020-projects.md(017 全文 6 处 + 016 frontmatter 1 处)
- 审稿员本机复跑推翻原单机结论:台机 read 快 15% / i7 笔记本 mmap 反快 25%,缺页格局同量级、fault_cost 单价差约 5 倍可解释翻转;全篇改双机 口径,headline/index/description 同步去单机化 - mprotect 基本语义与 guard page、/proc/self/maps 观察法、MAP_SHARED 跨进程可见、msync/madvise 实验化(Dirty 计数当面分开「可见」与 「已写回」)、EACCES 四条件、零填充 BUGS 告诫等按 todo 既定扩写 - 存量补课全档:EINTR 纪律沿用 01 篇;mapped_region RAII;实验档案 /tmp/l02_exps/(e1-e6,未存档数字一律重跑换真数) - humanizer lint 0 error 0 review;validate_frontmatter 全过 - 304 行 → 622 行
- 新建 code/volumn_codes/vol8/systems-programming/linux/file-io/ 02-mmap-memory-mapping/:9 组实验(fault_cost/proc_maps/sigbus/ mprotect_guard/mprotect_file/shared_vis/dirty_msync/cow/bench), 目录按文章小节顺序编号,源文件名与文章代码块标注一一对应 - .out 原始输出随档(含各复跑记录),全部为 i7-13700H 笔记本轮 捕获,与文中笔记本数字逐个对得上;台机数字只存于文中(README 交代口径) - 源码逐字节未改(与输出严格对应),烧死的绝对路径与复跑办法写进 README;CMakeLists 沿 vol8 惯例,-O2 为必选项(volatile 重排故事) - g++ 逐个编译 9/9 通过,CMake 整套构建零告警;文内两处 /tmp 路径 改指仓库目录,lint 0/0
…IX 教学存档 - 02-pty-recording L99 的 _XOPEN_SOURCE/_GNU_SOURCE 抱行内代码 - reading_time_minutes 按估算器补齐(file-lock/memory-layout/shm/fork-exec/ipc/lockfileex) - build_examples 的平台性跳过从 MSVC 单线扩到 mingw 共用,新增前缀规则: systems-programming/linux/ 与 thinking/ 的 POSIX 专属教学工程
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