45 lines
875 B
Go
45 lines
875 B
Go
package cmd
|
|
|
|
// Atexit handling
|
|
|
|
import (
|
|
"os"
|
|
"os/signal"
|
|
"sync"
|
|
|
|
"github.com/ncw/rclone/fs"
|
|
)
|
|
|
|
var (
|
|
atExitFns []func()
|
|
atExitOnce sync.Once
|
|
atExitRegisterOnce sync.Once
|
|
)
|
|
|
|
// AtExit registers a function to be added on exit
|
|
func AtExit(fn func()) {
|
|
atExitFns = append(atExitFns, fn)
|
|
// Run AtExit handlers on SIGINT or SIGTERM so everything gets
|
|
// tidied up properly
|
|
atExitRegisterOnce.Do(func() {
|
|
go func() {
|
|
ch := make(chan os.Signal, 1)
|
|
signal.Notify(ch, os.Interrupt) // syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT
|
|
sig := <-ch
|
|
fs.Infof(nil, "Signal received: %s", sig)
|
|
runAtExitFunctions()
|
|
fs.Infof(nil, "Exiting...")
|
|
os.Exit(0)
|
|
}()
|
|
})
|
|
|
|
}
|
|
|
|
// Runs all the AtExit functions if they haven't been run already
|
|
func runAtExitFunctions() {
|
|
atExitOnce.Do(func() {
|
|
for _, fn := range atExitFns {
|
|
fn()
|
|
}
|
|
})
|
|
}
|