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[go] (Windows) ensure all child processes are killed when main program exits
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| package main | |
| import ( | |
| "os/exec" | |
| "unsafe" | |
| "golang.org/x/sys/windows" | |
| ) | |
| // We use this struct to retreive process handle(which is unexported) | |
| // from os.Process using unsafe operation. | |
| type process struct { | |
| Pid int | |
| Handle uintptr | |
| } | |
| func main() { | |
| job, err := windows.CreateJobObject(nil, nil) | |
| if err != nil { | |
| panic(err) | |
| } | |
| defer windows.CloseHandle(job) | |
| info := windows.JOBOBJECT_EXTENDED_LIMIT_INFORMATION{ | |
| BasicLimitInformation: windows.JOBOBJECT_BASIC_LIMIT_INFORMATION{ | |
| LimitFlags: windows.JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE, | |
| }, | |
| } | |
| if _, err := windows.SetInformationJobObject( | |
| job, | |
| windows.JobObjectExtendedLimitInformation, | |
| uintptr(unsafe.Pointer(&info)), | |
| uint32(unsafe.Sizeof(info))); err != nil { | |
| panic(err) | |
| } | |
| cmd := exec.Command("notepad.exe", "noname") | |
| if err := cmd.Start(); err != nil { | |
| panic(err) | |
| } | |
| if err := windows.AssignProcessToJobObject( | |
| job, | |
| windows.Handle((*process)(unsafe.Pointer(cmd.Process)).Handle)); err != nil { | |
| panic(err) | |
| } | |
| if err := cmd.Wait(); err != nil { | |
| panic(err) | |
| } | |
| } |
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