| package daemon |
| |
| import ( |
| "github.com/docker/docker/container" |
| derr "github.com/docker/docker/errors" |
| ) |
| |
| // ContainerPause pauses a container |
| func (daemon *Daemon) ContainerPause(name string) error { |
| container, err := daemon.GetContainer(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.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) |
| } |
| |
| if err := daemon.execDriver.Pause(container.Command); err != nil { |
| return err |
| } |
| container.Paused = true |
| daemon.LogContainerEvent(container, "pause") |
| return nil |
| } |