Question

我想通过Windows环境中的进程名称获取进程ID吗？

我发现golang只有api os.FindProcess(id)，但没有名字。

Answer 1

您可以使用更新的sys调用包https://godoc.org/golang.org/x/sys列出所有进程并使用您要查找的名称进行匹配，它有大部分的windows api。

func Process32First(snapshot Handle, procEntry *ProcessEntry32) (err error)
func Process32Next(snapshot Handle, procEntry *ProcessEntry32) (err error)

另见msdn文档： https://msdn.microsoft.com/en-us/library/windows/desktop/ms684834(v=vs.85).aspx

Answer 2

我也不得不为此努力，并找到解决方案的方式不是很简单，因为...... WinApi：）

最后，您必须使用CreateToolhelp32Snapshot创建当前Windows进程列表的快照。然后，使用Process32First获取快照中的第一个进程。之后，使用Process32Next继续迭代列表，直到出现ERROR_NO_MORE_FILES错误。只有这样你才能拥有整个流程清单。

有关工作示例，请参阅how2readwindowsprocesses。

这是要点：

const TH32CS_SNAPPROCESS = 0x00000002

type WindowsProcess struct {
    ProcessID       int
    ParentProcessID int
    Exe             string
}

func processes() ([]WindowsProcess, error) {
    handle, err := windows.CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)
    if err != nil {
        return nil, err
    }
    defer windows.CloseHandle(handle)

    var entry windows.ProcessEntry32
    entry.Size = uint32(unsafe.Sizeof(entry))
    // get the first process
    err = windows.Process32First(handle, &entry)
    if err != nil {
        return nil, err
    }

    results := make([]WindowsProcess, 0, 50)
    for {
        results = append(results, newWindowsProcess(&entry))

        err = windows.Process32Next(handle, &entry)
        if err != nil {
            // windows sends ERROR_NO_MORE_FILES on last process
            if err == syscall.ERROR_NO_MORE_FILES {
                return results, nil
            }
            return nil, err
        }
    }
}

func findProcessByName(processes []WindowsProcess, name string) *WindowsProcess {
    for _, p := range processes {
        if strings.ToLower(p.Exe) == strings.ToLower(name) {
            return &p
        }
    }
    return nil
}

func newWindowsProcess(e *windows.ProcessEntry32) WindowsProcess {
    // Find when the string ends for decoding
    end := 0
    for {
        if e.ExeFile[end] == 0 {
            break
        }
        end++
    }

    return WindowsProcess{
        ProcessID:       int(e.ProcessID),
        ParentProcessID: int(e.ParentProcessID),
        Exe:             syscall.UTF16ToString(e.ExeFile[:end]),
    }
}

Answer 3

const TH32CS_SNAPPROCESS = 0x00000002

type WindowsProcess struct {
    ProcessID       int
    ParentProcessID int
    Exe             string
}

func newWindowsProcess(e *syscall.ProcessEntry32) WindowsProcess {
    // Find when the string ends for decoding
    end := 0
    for {
        if e.ExeFile[end] == 0 {
            break
        }
        end++
    }

    return WindowsProcess{
        ProcessID:       int(e.ProcessID),
        ParentProcessID: int(e.ParentProcessID),
        Exe:             syscall.UTF16ToString(e.ExeFile[:end]),
    }
}

func processes() ([]WindowsProcess, error) {
    handle, err := syscall.CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)
    if err != nil {
        return nil, err
    }
    defer syscall.CloseHandle(handle)

    var entry syscall.ProcessEntry32
    entry.Size = uint32(unsafe.Sizeof(entry))
    // get the first process
    err = syscall.Process32First(handle, &entry)
    if err != nil {
        return nil, err
    }

    results := make([]WindowsProcess, 0, 50)
    for {
        results = append(results, newWindowsProcess(&entry))

        err = syscall.Process32Next(handle, &entry)
        if err != nil {
            // windows sends ERROR_NO_MORE_FILES on last process
            if err == syscall.ERROR_NO_MORE_FILES {
                return results, nil
            }
            return nil, err
        }
    }
}

func findProcessByName(processes []WindowsProcess, name string) *WindowsProcess {
    for _, p := range processes {
        if bytes.Contains([]byte(strings.ToUpper(p.Exe)),     []byte(strings.ToUpper(name))) {
            return &p
        }
    }
    return nil
}

Answer 4

这似乎做到了：

package main

import (
   "fmt"
   "golang.org/x/sys/windows"
)

// unsafe.Sizeof(windows.ProcessEntry32{})
const processEntrySize = 568

func processID(name string) (uint32, error) {
   h, e := windows.CreateToolhelp32Snapshot(windows.TH32CS_SNAPPROCESS, 0)
   if e != nil { return 0, e }
   p := windows.ProcessEntry32{Size: processEntrySize}
   for {
      e := windows.Process32Next(h, &p)
      if e != nil { return 0, e }
      if windows.UTF16ToString(p.ExeFile[:]) == name {
         return p.ProcessID, nil
      }
   }
   return 0, fmt.Errorf("%q not found", name)
}

func main() {
   n, e := processID("WindowsTerminal.exe")
   if e != nil {
      panic(e)
   }
   println(n)
}

https://pkg.go.dev/golang.org/x/sys/windows#CreateToolhelp32Snapshot

Golang如何通过进程名称获取进程ID？

4 个答案: