forked from TrueCloudLab/restic
65 lines
1.3 KiB
Go
65 lines
1.3 KiB
Go
package main
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import (
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"fmt"
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"os"
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"os/signal"
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"sync"
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"syscall"
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"github.com/restic/restic/debug"
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)
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var cleanupHandlers struct {
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sync.Mutex
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list []func() error
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done bool
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}
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var stderr = os.Stderr
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func init() {
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c := make(chan os.Signal)
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signal.Notify(c, syscall.SIGINT)
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go CleanupHandler(c)
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}
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// AddCleanupHandler adds the function f to the list of cleanup handlers so
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// that it is executed when all the cleanup handlers are run, e.g. when SIGINT
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// is received.
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func AddCleanupHandler(f func() error) {
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cleanupHandlers.Lock()
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defer cleanupHandlers.Unlock()
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cleanupHandlers.list = append(cleanupHandlers.list, f)
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}
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// RunCleanupHandlers runs all registered cleanup handlers
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func RunCleanupHandlers() {
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cleanupHandlers.Lock()
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defer cleanupHandlers.Unlock()
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if cleanupHandlers.done {
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return
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}
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cleanupHandlers.done = true
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for _, f := range cleanupHandlers.list {
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err := f()
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if err != nil {
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fmt.Fprintf(stderr, "error in cleanup handler: %v\n", err)
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}
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}
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}
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// CleanupHandler handles the SIGINT signal.
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func CleanupHandler(c <-chan os.Signal) {
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for s := range c {
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debug.Log("CleanupHandler", "signal %v received, cleaning up", s)
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fmt.Println("\x1b[2KInterrupt received, cleaning up")
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RunCleanupHandlers()
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fmt.Println("exiting")
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os.Exit(0)
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}
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}
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