github.com/toplink-cn/moby@v0.0.0-20240305205811-460b4aebdf81/daemon/unpause.go (about) 1 package daemon // import "github.com/docker/docker/daemon" 2 3 import ( 4 "context" 5 "fmt" 6 7 "github.com/containerd/log" 8 "github.com/docker/docker/api/types/events" 9 "github.com/docker/docker/container" 10 ) 11 12 // ContainerUnpause unpauses a container 13 func (daemon *Daemon) ContainerUnpause(name string) error { 14 ctr, err := daemon.GetContainer(name) 15 if err != nil { 16 return err 17 } 18 return daemon.containerUnpause(ctr) 19 } 20 21 // containerUnpause resumes the container execution after the container is paused. 22 func (daemon *Daemon) containerUnpause(ctr *container.Container) error { 23 ctr.Lock() 24 defer ctr.Unlock() 25 26 // We cannot unpause the container which is not paused 27 if !ctr.Paused { 28 return fmt.Errorf("Container %s is not paused", ctr.ID) 29 } 30 tsk, err := ctr.GetRunningTask() 31 if err != nil { 32 return err 33 } 34 35 if err := tsk.Resume(context.Background()); err != nil { 36 return fmt.Errorf("Cannot unpause container %s: %s", ctr.ID, err) 37 } 38 39 ctr.Paused = false 40 daemon.setStateCounter(ctr) 41 daemon.updateHealthMonitor(ctr) 42 daemon.LogContainerEvent(ctr, events.ActionUnPause) 43 44 if err := ctr.CheckpointTo(daemon.containersReplica); err != nil { 45 log.G(context.TODO()).WithError(err).Warn("could not save container to disk") 46 } 47 48 return nil 49 }