Golang1.7使用kernel32.dll读取共享内存,代码小示例

package main

import (
    "fmt"
    "syscall"
    "unsafe"
)

func main() {
    ShareMemName, _ := syscall.BytePtrFromString("ShareMemory") //ShareMemory共享内存名称.
    var sharememname = uintptr(unsafe.Pointer(ShareMemName))

    kernet32 := syscall.NewLazyDLL("kernel32.dll")
    OpenFileMapping := kernet32.NewProc("OpenFileMappingA")

    ptr, _, err := OpenFileMapping.Call(0x0004, 0, sharememname) //0x0004 表示只读
    if err.Error() != "The operation completed successfully." {
        fmt.Println("This:", err)
        return
    }
    ptr, err = syscall.MapViewOfFile(syscall.Handle(ptr), 0x0004, 0, 0, 0)
    if err != nil {
        fmt.Println("There:", err)
        return
    }
    buf := *(*[60]byte)(unsafe.Pointer(ptr)) //我共享内存里面使用的是字符串所以这里映射成[:]byte array
    fmt.Println(string(buf[:]))

    err = syscall.UnmapViewOfFile(ptr)
    fmt.Println(err)
}