gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/pkg/segment/set_state.go (about)

     1  // Copyright 2018 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package segment
    16  
    17  import (
    18  	"context"
    19  )
    20  
    21  func (s *Set) saveRoot() []FlatSegment {
    22  	fs := s.ExportSlice()
    23  	// The state package saves data in slice capacity beyond slice length; save
    24  	// it some time by cutting ours off.
    25  	fs = fs[:len(fs):len(fs)]
    26  	return fs
    27  }
    28  
    29  func (s *Set) loadRoot(_ context.Context, fs []FlatSegment) {
    30  	if err := s.ImportSlice(fs); err != nil {
    31  		panic(err)
    32  	}
    33  }