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