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package marketnetwork
import (
"time"
"golang.org/x/sys/unix"
)
func exits(pids []int) []int {
var fds []int
for _, pid := range pids {
if fd, err := unix.PidfdOpen(pid, 0); err == nil {
fds = append(fds, fd)
}
}
return fds
}
func awaitExits(fds []int, grace time.Duration) {
defer func() {
for _, fd := range fds {
unix.Close(fd)
}
}()
deadline := time.Now().Add(grace)
open := append([]int(nil), fds...)
for len(open) > 0 {
left := time.Until(deadline)
if left <= 0 {
return
}
pfds := make([]unix.PollFd, len(open))
for i, fd := range open {
pfds[i] = unix.PollFd{Fd: int32(fd), Events: unix.POLLIN}
}
_, err := unix.Poll(pfds, int(left.Milliseconds())+1)
if err != nil && err != unix.EINTR {
return
}
var still []int
for i, p := range pfds {
if p.Revents == 0 {
still = append(still, open[i])
}
}
open = still
}
}
