9fans.net/go@v0.0.5/acme/Watch/sig_unix.go (about)

     1  // Copyright 2020 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build linux darwin freebsd netbsd openbsd solaris
     6  
     7  package main
     8  
     9  import (
    10  	"os/exec"
    11  	"syscall"
    12  	"time"
    13  )
    14  
    15  func isolate(cmd *exec.Cmd) {
    16  	cmd.SysProcAttr = &syscall.SysProcAttr{
    17  		Setpgid: true,
    18  	}
    19  }
    20  
    21  func quit(cmd *exec.Cmd) {
    22  	pid := cmd.Process.Pid
    23  	if pid <= 0 {
    24  		return
    25  	}
    26  	syscall.Kill(-pid, syscall.SIGQUIT)
    27  }
    28  
    29  func kill(cmd *exec.Cmd) {
    30  	pid := cmd.Process.Pid
    31  	if pid <= 0 {
    32  		return
    33  	}
    34  	syscall.Kill(-pid, syscall.SIGINT)
    35  	time.Sleep(100 * time.Millisecond)
    36  	syscall.Kill(-pid, syscall.SIGTERM)
    37  	time.Sleep(100 * time.Millisecond)
    38  	syscall.Kill(-pid, syscall.SIGKILL)
    39  }