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https://github.com/jesseduffield/lazygit.git
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34 lines
1.1 KiB
Go
34 lines
1.1 KiB
Go
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//go:build !windows
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// +build !windows
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package kill
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import (
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"os/exec"
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"syscall"
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)
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// Kill kills a process. If the process has Setpgid == true, then we have anticipated that it might spawn its own child processes, so we've given it a process group ID (PGID) equal to its process id (PID) and given its child processes will inherit the PGID, we can kill that group, rather than killing the process itself.
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func Kill(cmd *exec.Cmd) error {
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if cmd.Process == nil {
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// You can't kill a person with no body
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return nil
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}
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if cmd.SysProcAttr != nil && cmd.SysProcAttr.Setpgid {
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// minus sign means we're talking about a PGID as opposed to a PID
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return syscall.Kill(-cmd.Process.Pid, syscall.SIGKILL)
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}
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return cmd.Process.Kill()
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}
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// PrepareForChildren ensures that child processes of this parent process will share the same group id
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// as the parent, meaning when the call Kill on the parent process, we'll kill
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// the whole group, parent and children both. Gruesome when you think about it.
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func PrepareForChildren(cmd *exec.Cmd) {
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cmd.SysProcAttr = &syscall.SysProcAttr{
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Setpgid: true,
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}
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}
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