Check in gVisor.

PiperOrigin-RevId: 194583126
Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463

1 files changed, 41 insertions, 0 deletions

diff --git a/pkg/sentry/kernel/timekeeper_state.go b/pkg/sentry/kernel/timekeeper_state.go
new file mode 100644
index 000000000..aee983ac7
--- /dev/null
+++ b/pkg/sentry/kernel/timekeeper_state.go
@@ -0,0 +1,41 @@
+// 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 = true
+}