forked from hyperhq/hyperd
/
pause.go
39 lines (31 loc) · 941 Bytes
/
pause.go
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package daemon
import (
derr "github.com/docker/docker/errors"
)
// ContainerPause pauses a container
func (daemon *Daemon) ContainerPause(name string) error {
container, err := daemon.Get(name)
if err != nil {
return err
}
if err := daemon.containerPause(container); err != nil {
return derr.ErrorCodePauseError.WithArgs(name, err)
}
return nil
}
// containerPause pauses the container execution without stopping the process.
// The execution can be resumed by calling containerUnpause.
func (daemon *Daemon) containerPause(container *Container) error {
container.Lock()
defer container.Unlock()
// We cannot Pause the container which is not running
if !container.Running {
return derr.ErrorCodeNotRunning.WithArgs(container.ID)
}
// We cannot Pause the container which is already paused
if container.Paused {
return derr.ErrorCodeAlreadyPaused.WithArgs(container.ID)
}
container.Paused = true
return nil
}