1 files changed, 40 insertions, 0 deletions
diff --git a/pkg/sentry/time/clock_id.go b/pkg/sentry/time/clock_id.go
new file mode 100644
index 000000000..724f59dd9
--- /dev/null
+++ b/pkg/sentry/time/clock_id.go
@@ -0,0 +1,40 @@
+// Copyright 2018 The gVisor Authors.
+//
+// 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 time
+
+import (
+	"strconv"
+)
+
+// ClockID is a Linux clock identifier.
+type ClockID int32
+
+// These are the supported Linux clock identifiers.
+const (
+	Realtime ClockID = iota
+	Monotonic
+)
+
+// String implements fmt.Stringer.String.
+func (c ClockID) String() string {
+	switch c {
+	case Realtime:
+		return "Realtime"
+	case Monotonic:
+		return "Monotonic"
+	default:
+		return strconv.Itoa(int(c))
+	}
+}