mirror of
https://gitcode.com/JianFeeeee/HomeAgent.git
synced 2026-09-21 17:38:10 +00:00
304cad0648
- docs/zh/架构迁移评估.md: C ABI→子进程+共享内存完整迁移论证(1621行) - docs/zh/experiments/: 18项可复跑可行性实验(架构评估的所有数字来源) - plan.md §11: 11.1~11.9 插件架构缺陷修复清单(唯一权威编号) - main 保持干净,本批次为 update 特性分支的整改起点
42 lines
1.3 KiB
Go
42 lines
1.3 KiB
Go
//go:build ignore
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package main
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import (
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"encoding/binary"
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"fmt"
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"os"
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"unsafe"
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"golang.org/x/sys/unix"
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)
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// 子进程：fd 3 = eventfd(通知), fd 4 = shm 文件
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func main() {
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efd := os.NewFile(3, "evt")
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shmf := os.NewFile(4, "shm")
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data, err := unix.Mmap(int(shmf.Fd()), 0, 4096, unix.PROT_READ|unix.PROT_WRITE, unix.MAP_SHARED)
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if err != nil { fmt.Println("CHILD mmap 失败:", err); os.Exit(1) }
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fmt.Printf("CHILD: mmap 基址 = %p\n", unsafe.Pointer(&data[0]))
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buf := make([]byte, 8)
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if _, err := efd.Read(buf); err != nil {
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fmt.Println("CHILD read err:", err); os.Exit(1)
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}
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n := binary.LittleEndian.Uint64(buf)
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fmt.Printf("CHILD: 被 eventfd 唤醒, 计数=%d\n", n)
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// 按偏移读：头部 16 字节 = {off uint32, len uint32, seq uint64}
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off := binary.LittleEndian.Uint32(data[0:4])
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ln := binary.LittleEndian.Uint32(data[4:8])
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seq := binary.LittleEndian.Uint64(data[8:16])
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payload := string(data[off : off+ln])
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fmt.Printf("CHILD: 偏移解引用 off=%d len=%d seq=%d → %q\n", off, ln, seq, payload)
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// 子进程回写（验证双向可见）
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copy(data[2048:], []byte("CHILD-ACK"))
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binary.LittleEndian.PutUint32(data[16:20], 2048)
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binary.LittleEndian.PutUint32(data[20:24], uint32(len("CHILD-ACK")))
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fmt.Println("CHILD: 已回写 ACK")
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}
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