github.com/tacshi/go-ethereum@v0.0.0-20230616113857-84a434e20921/core/rawdb/fileutil.go (about)

     1  // Copyright 2019 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  //go:build !js
    18  // +build !js
    19  
    20  package rawdb
    21  
    22  import "github.com/gofrs/flock"
    23  
    24  type FileLock interface {
    25  	Unlock() error
    26  	TryLock() (bool, error)
    27  }
    28  
    29  func NewFileLock(fileName string) FileLock {
    30  	return flock.New(fileName)
    31  }