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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 fsutil
import (
"math"
"gvisor.dev/gvisor/pkg/sentry/platform"
)
// FrameRefSetFunctions implements segment.Functions for FrameRefSet.
type FrameRefSetFunctions struct{}
// MinKey implements segment.Functions.MinKey.
func (FrameRefSetFunctions) MinKey() uint64 {
return 0
}
// MaxKey implements segment.Functions.MaxKey.
func (FrameRefSetFunctions) MaxKey() uint64 {
return math.MaxUint64
}
// ClearValue implements segment.Functions.ClearValue.
func (FrameRefSetFunctions) ClearValue(val *uint64) {
}
// Merge implements segment.Functions.Merge.
func (FrameRefSetFunctions) Merge(_ platform.FileRange, val1 uint64, _ platform.FileRange, val2 uint64) (uint64, bool) {
if val1 != val2 {
return 0, false
}
return val1, true
}
// Split implements segment.Functions.Split.
func (FrameRefSetFunctions) Split(_ platform.FileRange, val uint64, _ uint64) (uint64, uint64) {
return val, val
}
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