mirror of
https://gitcode.com/JianFeeeee/HomeAgent.git
synced 2026-09-22 18:08:04 +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
73 lines
2.1 KiB
Go
73 lines
2.1 KiB
Go
//go:build ignore
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package main
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/*
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#cgo LDFLAGS: -ldl
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#include <dlfcn.h>
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#include <stdlib.h>
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typedef const char* (*verfn)(void);
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static const char* call_ver(void* f){ return ((verfn)f)(); }
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*/
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import "C"
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import (
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"fmt"
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"os"
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"unsafe"
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)
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func main() {
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// Go 用 dlopen 加载纯 C shim（shim 本身常驻，无所谓）
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sp := C.CString("./shim.so")
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shim := C.dlopen(sp, C.RTLD_NOW|C.RTLD_LOCAL)
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C.free(unsafe.Pointer(sp))
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if shim == nil {
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fmt.Println("shim 加载失败:", C.GoString(C.dlerror()))
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os.Exit(1)
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}
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openName := C.CString("shim_open")
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closeName := C.CString("shim_close")
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symName := C.CString("shim_sym")
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shimOpen := C.dlsym(shim, openName)
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shimClose := C.dlsym(shim, closeName)
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shimSym := C.dlsym(shim, symName)
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C.free(unsafe.Pointer(openName))
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C.free(unsafe.Pointer(closeName))
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C.free(unsafe.Pointer(symName))
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fmt.Printf("shim 就绪: open=%p close=%p sym=%p\n\n", shimOpen, shimClose, shimSym)
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// 直接用 dlopen/dlsym 调 shim 的三个函数（避免再写一层 C 包装）
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load := func(path string) unsafe.Pointer {
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cp := C.CString(path)
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defer C.free(unsafe.Pointer(cp))
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return C.dlopen(cp, C.RTLD_NOW|C.RTLD_LOCAL)
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}
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ver := func(h unsafe.Pointer) string {
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n := C.CString("probe_version")
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defer C.free(unsafe.Pointer(n))
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f := C.dlsym(h, n)
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if f == nil { return "<no sym>" }
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return C.GoString(C.call_ver(f))
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}
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fmt.Println("--- 场景: Go(带 NODELETE runtime) 加载/卸载纯 C 的第三层 so ---")
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h1 := load("./probe.so")
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fmt.Printf("1) dlopen probe.so handle=%p version=%s\n", h1, ver(h1))
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rc := C.dlclose(h1)
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fmt.Printf("2) dlclose rc=%d\n", int(rc))
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// 换内容（V1 -> V2），同路径
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in, _ := os.ReadFile("probe_v2.so")
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os.WriteFile("probe.so", in, 0755)
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fmt.Println("3) 磁盘 probe.so 内容替换为 V2（同路径）")
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h2 := load("./probe.so")
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fmt.Printf("4) 再 dlopen 同路径 handle=%p version=%s\n", h2, ver(h2))
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if h1 == h2 {
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fmt.Println(" => 句柄相同：未卸载，仍是旧代码")
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} else {
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fmt.Println(" => 句柄不同：真正卸载并重新装载了新代码 ✅")
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}
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}
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