path: root/params/gas_table.go

// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package params

import "math/big"

type GasTable struct {
    ExtcodeSize *big.Int
    ExtcodeCopy *big.Int
    Balance     *big.Int
    SLoad       *big.Int
    Calls       *big.Int
    Suicide     *big.Int

    ExpByte *big.Int

    // CreateBySuicide occurs when the
    // refunded account is one that does
    // not exist. This logic is similar
    // to call. May be left nil. Nil means
    // not charged.
    CreateBySuicide *big.Int
}

var (
    // GasTableHomestead contain the gas prices for
    // the homestead phase.
    GasTableHomestead = GasTable{
        ExtcodeSize: big.NewInt(20),
        ExtcodeCopy: big.NewInt(20),
        Balance:     big.NewInt(20),
        SLoad:       big.NewInt(50),
        Calls:       big.NewInt(40),
        Suicide:     big.NewInt(0),
        ExpByte:     big.NewInt(10),

        // explicitly set to nil to indicate
        // this rule does not apply to homestead.
        CreateBySuicide: nil,
    }

    // GasTableHomestead contain the gas re-prices for
    // the homestead phase.
    //
    // TODO rename to GasTableEIP150
    GasTableHomesteadGasRepriceFork = GasTable{
        ExtcodeSize: big.NewInt(700),
        ExtcodeCopy: big.NewInt(700),
        Balance:     big.NewInt(400),
        SLoad:       big.NewInt(200),
        Calls:       big.NewInt(700),
        Suicide:     big.NewInt(5000),
        ExpByte:     big.NewInt(10),

        CreateBySuicide: big.NewInt(25000),
    }

    GasTableEIP158 = GasTable{
        ExtcodeSize: big.NewInt(700),
        ExtcodeCopy: big.NewInt(700),
        Balance:     big.NewInt(400),
        SLoad:       big.NewInt(200),
        Calls:       big.NewInt(700),
        Suicide:     big.NewInt(5000),
        ExpByte:     big.NewInt(50),

        CreateBySuicide: big.NewInt(25000),
    }
)