github.com/zjj1991/quorum@v0.0.0-20190524123704-ae4b0a1e1a19/params/protocol_params.go (about) 1 // Copyright 2015 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 params 18 19 import "math/big" 20 21 var ( 22 TargetGasLimit = GenesisGasLimit // The artificial target 23 24 ) 25 26 const ( 27 // these are original values from upstream Geth, used in ethash consensus 28 OriginnalMinGasLimit uint64 = 5000 // The bound divisor of the gas limit, used in update calculations. 29 OriginalGasLimitBoundDivisor uint64 = 1024 // Minimum the gas limit may ever be. 30 31 // modified values for Quorum 32 GasLimitBoundDivisor uint64 = 4096 // The bound divisor of the gas limit, used in update calculations. 33 MinGasLimit uint64 = 700000000 // Minimum the gas limit may ever be. 34 GenesisGasLimit uint64 = 800000000 // Gas limit of the Genesis block. 35 36 MaximumExtraDataSize uint64 = 32 // Maximum size extra data may be after Genesis. 37 ExpByteGas uint64 = 10 // Times ceil(log256(exponent)) for the EXP instruction. 38 SloadGas uint64 = 50 // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added. 39 CallValueTransferGas uint64 = 9000 // Paid for CALL when the value transfer is non-zero. 40 CallNewAccountGas uint64 = 25000 // Paid for CALL when the destination address didn't exist prior. 41 TxGas uint64 = 21000 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions. 42 TxGasContractCreation uint64 = 53000 // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions. 43 TxDataZeroGas uint64 = 4 // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions. 44 QuadCoeffDiv uint64 = 512 // Divisor for the quadratic particle of the memory cost equation. 45 LogDataGas uint64 = 8 // Per byte in a LOG* operation's data. 46 CallStipend uint64 = 2300 // Free gas given at beginning of call. 47 48 Sha3Gas uint64 = 30 // Once per SHA3 operation. 49 Sha3WordGas uint64 = 6 // Once per word of the SHA3 operation's data. 50 51 SstoreSetGas uint64 = 20000 // Once per SLOAD operation. 52 SstoreResetGas uint64 = 5000 // Once per SSTORE operation if the zeroness changes from zero. 53 SstoreClearGas uint64 = 5000 // Once per SSTORE operation if the zeroness doesn't change. 54 SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero. 55 56 NetSstoreNoopGas uint64 = 200 // Once per SSTORE operation if the value doesn't change. 57 NetSstoreInitGas uint64 = 20000 // Once per SSTORE operation from clean zero. 58 NetSstoreCleanGas uint64 = 5000 // Once per SSTORE operation from clean non-zero. 59 NetSstoreDirtyGas uint64 = 200 // Once per SSTORE operation from dirty. 60 61 NetSstoreClearRefund uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot 62 NetSstoreResetRefund uint64 = 4800 // Once per SSTORE operation for resetting to the original non-zero value 63 NetSstoreResetClearRefund uint64 = 19800 // Once per SSTORE operation for resetting to the original zero value 64 65 JumpdestGas uint64 = 1 // Refunded gas, once per SSTORE operation if the zeroness changes to zero. 66 EpochDuration uint64 = 30000 // Duration between proof-of-work epochs. 67 CallGas uint64 = 40 // Once per CALL operation & message call transaction. 68 CreateDataGas uint64 = 200 // 69 CallCreateDepth uint64 = 1024 // Maximum depth of call/create stack. 70 ExpGas uint64 = 10 // Once per EXP instruction 71 LogGas uint64 = 375 // Per LOG* operation. 72 CopyGas uint64 = 3 // 73 StackLimit uint64 = 1024 // Maximum size of VM stack allowed. 74 TierStepGas uint64 = 0 // Once per operation, for a selection of them. 75 LogTopicGas uint64 = 375 // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas. 76 CreateGas uint64 = 32000 // Once per CREATE operation & contract-creation transaction. 77 Create2Gas uint64 = 32000 // Once per CREATE2 operation 78 SuicideRefundGas uint64 = 24000 // Refunded following a suicide operation. 79 MemoryGas uint64 = 3 // Times the address of the (highest referenced byte in memory + 1). NOTE: referencing happens on read, write and in instructions such as RETURN and CALL. 80 TxDataNonZeroGas uint64 = 68 // Per byte of data attached to a transaction that is not equal to zero. NOTE: Not payable on data of calls between transactions. 81 82 MaxCodeSize = 24576 // Maximum bytecode to permit for a contract 83 84 // Precompiled contract gas prices 85 86 EcrecoverGas uint64 = 3000 // Elliptic curve sender recovery gas price 87 Sha256BaseGas uint64 = 60 // Base price for a SHA256 operation 88 Sha256PerWordGas uint64 = 12 // Per-word price for a SHA256 operation 89 Ripemd160BaseGas uint64 = 600 // Base price for a RIPEMD160 operation 90 Ripemd160PerWordGas uint64 = 120 // Per-word price for a RIPEMD160 operation 91 IdentityBaseGas uint64 = 15 // Base price for a data copy operation 92 IdentityPerWordGas uint64 = 3 // Per-work price for a data copy operation 93 ModExpQuadCoeffDiv uint64 = 20 // Divisor for the quadratic particle of the big int modular exponentiation 94 Bn256AddGas uint64 = 500 // Gas needed for an elliptic curve addition 95 Bn256ScalarMulGas uint64 = 40000 // Gas needed for an elliptic curve scalar multiplication 96 Bn256PairingBaseGas uint64 = 100000 // Base price for an elliptic curve pairing check 97 Bn256PairingPerPointGas uint64 = 80000 // Per-point price for an elliptic curve pairing check 98 QuorumMaximumExtraDataSize uint64 = 65 // Maximum size extra data may be after Genesis. 99 ) 100 101 var ( 102 DifficultyBoundDivisor = big.NewInt(2048) // The bound divisor of the difficulty, used in the update calculations. 103 GenesisDifficulty = big.NewInt(131072) // Difficulty of the Genesis block. 104 MinimumDifficulty = big.NewInt(131072) // The minimum that the difficulty may ever be. 105 DurationLimit = big.NewInt(13) // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not. 106 ) 107 108 func GetMaximumExtraDataSize(isQuorum bool) uint64 { 109 if isQuorum { 110 return QuorumMaximumExtraDataSize 111 } else { 112 return MaximumExtraDataSize 113 } 114 }