gvisor/pkg/sentry/kernel/timekeeper_state.go

42 lines
1.2 KiB
Go

// Copyright 2018 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package kernel
import (
"gvisor.googlesource.com/gvisor/pkg/sentry/time"
)
// beforeSave is invoked by stateify.
func (t *Timekeeper) beforeSave() {
if t.stop != nil {
panic("pauseUpdates must be called before Save")
}
// N.B. we want the *offset* monotonic time.
var err error
if t.saveMonotonic, err = t.GetTime(time.Monotonic); err != nil {
panic("unable to get current monotonic time: " + err.Error())
}
if t.saveRealtime, err = t.GetTime(time.Realtime); err != nil {
panic("unable to get current realtime: " + err.Error())
}
}
// afterLoad is invoked by stateify.
func (t *Timekeeper) afterLoad() {
t.restored = make(chan struct{})
}