github.com/beyonderyue/gochain@v2.2.26+incompatible/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 var ( 20 // The artificial target gas limit. 21 TargetGasLimit uint64 = TargetTxsPerSec * DefaultCliquePeriod * TxGas 22 ) 23 24 const ( 25 DefaultCliquePeriod = 5 26 DefaultCliqueEpoch = 3000 27 28 TargetTxsPerSec = 1300 29 30 GasLimitBoundDivisor uint64 = 1024 // The bound divisor of the gas limit, used in update calculations. 31 MinGasLimit uint64 = 5000 // Minimum the gas limit may ever be. 32 GenesisGasLimit uint64 = 210284448 // Gas limit of the Genesis block. 33 34 MaximumExtraDataSize uint64 = 32 // Maximum size extra data may be after Genesis. 35 ExpByteGas uint64 = 10 // Times ceil(log256(exponent)) for the EXP instruction. 36 SloadGas uint64 = 50 // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added. 37 CallValueTransferGas uint64 = 9000 // Paid for CALL when the value transfer is non-zero. 38 CallNewAccountGas uint64 = 25000 // Paid for CALL when the destination address didn't exist prior. 39 TxGas uint64 = 21000 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions. 40 TxGasContractCreation uint64 = 53000 // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions. 41 TxDataZeroGas uint64 = 4 // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions. 42 QuadCoeffDiv uint64 = 512 // Divisor for the quadratic particle of the memory cost equation. 43 LogDataGas uint64 = 8 // Per byte in a LOG* operation's data. 44 CallStipend uint64 = 2300 // Free gas given at beginning of call. 45 46 Sha3Gas uint64 = 30 // Once per SHA3 operation. 47 Sha3WordGas uint64 = 6 // Once per word of the SHA3 operation's data. 48 49 SstoreSetGas uint64 = 20000 // Once per SLOAD operation. 50 SstoreResetGas uint64 = 5000 // Once per SSTORE operation if the zeroness changes from zero. 51 SstoreClearGas uint64 = 5000 // Once per SSTORE operation if the zeroness doesn't change. 52 SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero. 53 54 NetSstoreNoopGas uint64 = 200 // Once per SSTORE operation if the value doesn't change. 55 NetSstoreInitGas uint64 = 20000 // Once per SSTORE operation from clean zero. 56 NetSstoreCleanGas uint64 = 5000 // Once per SSTORE operation from clean non-zero. 57 NetSstoreDirtyGas uint64 = 200 // Once per SSTORE operation from dirty. 58 59 NetSstoreClearRefund uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot 60 NetSstoreResetRefund uint64 = 4800 // Once per SSTORE operation for resetting to the original non-zero value 61 NetSstoreResetClearRefund uint64 = 19800 // Once per SSTORE operation for resetting to the original zero value 62 63 JumpdestGas uint64 = 1 // Refunded gas, once per SSTORE operation if the zeroness changes to zero. 64 EpochDuration uint64 = 30000 // Duration between proof-of-work epochs. 65 CallGas uint64 = 40 // Once per CALL operation & message call transaction. 66 CreateDataGas uint64 = 200 // 67 CallCreateDepth uint64 = 1024 // Maximum depth of call/create stack. 68 ExpGas uint64 = 10 // Once per EXP instruction 69 LogGas uint64 = 375 // Per LOG* operation. 70 CopyGas uint64 = 3 // 71 StackLimit uint64 = 1024 // Maximum size of VM stack allowed. 72 TierStepGas uint64 = 0 // Once per operation, for a selection of them. 73 LogTopicGas uint64 = 375 // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas. 74 CreateGas uint64 = 32000 // Once per CREATE operation & contract-creation transaction. 75 Create2Gas uint64 = 32000 // Once per CREATE2 operation 76 SuicideRefundGas uint64 = 24000 // Refunded following a suicide operation. 77 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. 78 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. 79 80 MaxCodeSize = 24576 // Maximum bytecode to permit for a contract 81 82 // Precompiled contract gas prices 83 84 EcrecoverGas uint64 = 3000 // Elliptic curve sender recovery gas price 85 Sha256BaseGas uint64 = 60 // Base price for a SHA256 operation 86 Sha256PerWordGas uint64 = 12 // Per-word price for a SHA256 operation 87 Ripemd160BaseGas uint64 = 600 // Base price for a RIPEMD160 operation 88 Ripemd160PerWordGas uint64 = 120 // Per-word price for a RIPEMD160 operation 89 IdentityBaseGas uint64 = 15 // Base price for a data copy operation 90 IdentityPerWordGas uint64 = 3 // Per-work price for a data copy operation 91 ModExpQuadCoeffDiv uint64 = 20 // Divisor for the quadratic particle of the big int modular exponentiation 92 Bn256AddGas uint64 = 500 // Gas needed for an elliptic curve addition 93 Bn256ScalarMulGas uint64 = 40000 // Gas needed for an elliptic curve scalar multiplication 94 Bn256PairingBaseGas uint64 = 100000 // Base price for an elliptic curve pairing check 95 Bn256PairingPerPointGas uint64 = 80000 // Per-point price for an elliptic curve pairing check 96 ) 97 98 func DefaultCliqueConfig() *CliqueConfig { 99 return &CliqueConfig{Epoch: DefaultCliqueEpoch, Period: DefaultCliquePeriod} 100 }