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// 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
// Clocks represents a clock source that contains both a monotonic and realtime
// clock.
type Clocks interface {
// Update performs an update step, keeping the clocks in sync with the
// reference host clocks, and returning the new timekeeping parameters.
//
// Update should be called at approximately ApproxUpdateInterval.
Update() (monotonicParams Parameters, monotonicOk bool, realtimeParam Parameters, realtimeOk bool)
// GetTime returns the current time in nanoseconds for the given clock.
//
// Clocks implementations must support at least Monotonic and
// Realtime.
GetTime(c ClockID) (int64, error)
}
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