github.com/theQRL/go-zond@v0.2.1/consensus/misc/gaslimit.go (about)

     1  // Copyright 2021 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  package misc
    18  
    19  import (
    20  	"fmt"
    21  
    22  	"github.com/theQRL/go-zond/params"
    23  )
    24  
    25  // VerifyGaslimit verifies the header gas limit according increase/decrease
    26  // in relation to the parent gas limit.
    27  func VerifyGaslimit(parentGasLimit, headerGasLimit uint64) error {
    28  	if headerGasLimit > params.MaxGasLimit {
    29  		return fmt.Errorf("invalid gas limit beyond %d", params.MaxGasLimit)
    30  	}
    31  	if headerGasLimit < params.MinGasLimit {
    32  		return fmt.Errorf("invalid gas limit below %d", params.MinGasLimit)
    33  	}
    34  	return nil
    35  }