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pause.go
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/
pause.go
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package main
import (
"log"
"github.com/codegangsta/cli"
"github.com/docker/libcontainer/cgroups"
"github.com/docker/libcontainer/cgroups/fs"
"github.com/docker/libcontainer/cgroups/systemd"
)
var pauseCommand = cli.Command{
Name: "pause",
Usage: "pause the container's processes",
Action: pauseAction,
}
var unpauseCommand = cli.Command{
Name: "unpause",
Usage: "unpause the container's processes",
Action: unpauseAction,
}
func pauseAction(context *cli.Context) {
if err := toggle(cgroups.Frozen); err != nil {
log.Fatal(err)
}
}
func unpauseAction(context *cli.Context) {
if err := toggle(cgroups.Thawed); err != nil {
log.Fatal(err)
}
}
func toggle(state cgroups.FreezerState) error {
container, err := loadConfig()
if err != nil {
return err
}
if systemd.UseSystemd() {
err = systemd.Freeze(container.Cgroups, state)
} else {
err = fs.Freeze(container.Cgroups, state)
}
return err
}