Examples with Gas org.hyperledger.besu.evm.Gas used on opensource projects

Example 16 with Gas

use of org.hyperledger.besu.evm.Gas in project besu by hyperledger.

the class FrontierGasCalculator method memoryCost.

private static Gas memoryCost(final long length) {
    final Gas len = Gas.of(length);
    final Gas base = len.times(len).dividedBy(512);
    return MEMORY_WORD_GAS_COST.times(len).plus(base);
}

Example 17 with Gas

use of org.hyperledger.besu.evm.Gas in project besu by hyperledger.

the class FrontierGasCalculator method memoryExpansionGasCost.

@Override
public Gas memoryExpansionGasCost(final MessageFrame frame, final long offset, final long length) {
    final Gas pre = memoryCost(frame.memoryWordSize());
    final Gas post = memoryCost(frame.calculateMemoryExpansion(offset, length));
    return post.minus(pre);
}

Example 18 with Gas

use of org.hyperledger.besu.evm.Gas in project besu by hyperledger.

the class IstanbulGasCalculator method transactionIntrinsicGasCost.

@Override
public Gas transactionIntrinsicGasCost(final Bytes payload, final boolean isContractCreation) {
    int zeros = 0;
    for (int i = 0; i < payload.size(); i++) {
        if (payload.get(i) == 0) {
            ++zeros;
        }
    }
    final int nonZeros = payload.size() - zeros;
    Gas cost = TX_BASE_COST.plus(TX_DATA_ZERO_COST.times(zeros)).plus(ISTANBUL_TX_DATA_NON_ZERO_COST.times(nonZeros));
    return isContractCreation ? cost.plus(txCreateExtraGasCost()) : cost;
}

Example 19 with Gas

use of org.hyperledger.besu.evm.Gas in project besu by hyperledger.

the class Sha3Operation method execute.

@Override
public OperationResult execute(final MessageFrame frame, final EVM evm) {
    final long from = clampedToLong(frame.popStackItem());
    final long length = clampedToLong(frame.popStackItem());
    final Gas cost = gasCalculator().sha3OperationGasCost(frame, from, length);
    final Optional<Gas> optionalCost = Optional.of(cost);
    if (frame.getRemainingGas().compareTo(cost) < 0) {
        return new OperationResult(optionalCost, Optional.of(ExceptionalHaltReason.INSUFFICIENT_GAS));
    }
    final Bytes bytes = frame.readMutableMemory(from, length);
    frame.pushStackItem(UInt256.fromBytes(keccak256(bytes)));
    return new OperationResult(optionalCost, Optional.empty());
}

Example 20 with Gas

use of org.hyperledger.besu.evm.Gas in project besu by hyperledger.

the class ConstantinopleGasCalculator method create2OperationGasCost.

@Override
public Gas create2OperationGasCost(final MessageFrame frame) {
    final UInt256 initCodeLength = UInt256.fromBytes(frame.getStackItem(2));
    final UInt256 numWords = UInt256.fromBytes(initCodeLength.divideCeil(Bytes32.SIZE));
    final Gas initCodeHashCost = SHA3_OPERATION_WORD_GAS_COST.times(Gas.of(numWords));
    return createOperationGasCost(frame).plus(initCodeHashCost);
}