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

Example 1 with Gas

use of org.hyperledger.besu.evm.Gas in project hedera-services by hashgraph.

the class GasCalculatorHederaV22 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 2 with Gas

use of org.hyperledger.besu.evm.Gas in project hedera-services by hashgraph.

the class AbstractRecordingCreateOperation method execute.

@Override
public Operation.OperationResult execute(final MessageFrame frame, final EVM evm) {
    // We have a feature flag for CREATE2
    if (!isEnabled()) {
        return INVALID_RESPONSE;
    }
    // manual check because some reads won't come until the "complete" step.
    if (frame.stackSize() < getStackItemsConsumed()) {
        return UNDERFLOW_RESPONSE;
    }
    final Gas cost = cost(frame);
    final Optional<Gas> optionalCost = Optional.ofNullable(cost);
    if (cost != null) {
        if (frame.isStatic()) {
            return haltWith(optionalCost, ILLEGAL_STATE_CHANGE);
        } else if (frame.getRemainingGas().compareTo(cost) < 0) {
            return new Operation.OperationResult(optionalCost, Optional.of(ExceptionalHaltReason.INSUFFICIENT_GAS));
        }
        final Wei value = Wei.wrap(frame.getStackItem(0));
        final Address address = frame.getRecipientAddress();
        final MutableAccount account = frame.getWorldUpdater().getAccount(address).getMutable();
        frame.clearReturnData();
        if (value.compareTo(account.getBalance()) > 0 || frame.getMessageStackDepth() >= MAX_STACK_DEPTH) {
            fail(frame);
        } else {
            spawnChildMessage(frame);
        }
    }
    return new Operation.OperationResult(optionalCost, Optional.empty());
}

Example 3 with Gas

use of org.hyperledger.besu.evm.Gas in project hedera-services by hashgraph.

the class AbstractRecordingCreateOperation method spawnChildMessage.

private void spawnChildMessage(final MessageFrame frame) {
    // memory cost needs to be calculated prior to memory expansion
    final Gas cost = cost(frame);
    frame.decrementRemainingGas(cost);
    final Address address = frame.getRecipientAddress();
    final MutableAccount account = frame.getWorldUpdater().getAccount(address).getMutable();
    account.incrementNonce();
    final Wei value = Wei.wrap(frame.getStackItem(0));
    final long inputOffset = clampedToLong(frame.getStackItem(1));
    final long inputSize = clampedToLong(frame.getStackItem(2));
    final Bytes inputData = frame.readMemory(inputOffset, inputSize);
    final Address contractAddress = targetContractAddress(frame);
    final Gas childGasStipend = gasCalculator().gasAvailableForChildCreate(frame.getRemainingGas());
    frame.decrementRemainingGas(childGasStipend);
    final MessageFrame childFrame = MessageFrame.builder().type(MessageFrame.Type.CONTRACT_CREATION).messageFrameStack(frame.getMessageFrameStack()).worldUpdater(frame.getWorldUpdater().updater()).initialGas(childGasStipend).address(contractAddress).originator(frame.getOriginatorAddress()).contract(contractAddress).gasPrice(frame.getGasPrice()).inputData(Bytes.EMPTY).sender(frame.getRecipientAddress()).value(value).apparentValue(value).code(new Code(inputData, Hash.EMPTY)).blockValues(frame.getBlockValues()).depth(frame.getMessageStackDepth() + 1).completer(child -> complete(frame, child)).miningBeneficiary(frame.getMiningBeneficiary()).blockHashLookup(frame.getBlockHashLookup()).maxStackSize(frame.getMaxStackSize()).build();
    frame.incrementRemainingGas(cost);
    frame.getMessageFrameStack().addFirst(childFrame);
    frame.setState(MessageFrame.State.CODE_SUSPENDED);
}

Example 4 with Gas

use of org.hyperledger.besu.evm.Gas in project hedera-services by hashgraph.

the class HederaExtCodeHashOperation method execute.

@Override
public OperationResult execute(MessageFrame frame, EVM evm) {
    try {
        final Address address = Words.toAddress(frame.popStackItem());
        if (!addressValidator.test(address, frame)) {
            return new OperationResult(Optional.of(cost(true)), Optional.of(HederaExceptionalHaltReason.INVALID_SOLIDITY_ADDRESS));
        }
        final var account = frame.getWorldUpdater().get(address);
        boolean accountIsWarm = frame.warmUpAddress(address) || this.gasCalculator().isPrecompile(address);
        Optional<Gas> optionalCost = Optional.of(this.cost(accountIsWarm));
        if (frame.getRemainingGas().compareTo(optionalCost.get()) < 0) {
            return new OperationResult(optionalCost, Optional.of(ExceptionalHaltReason.INSUFFICIENT_GAS));
        } else {
            if (!account.isEmpty()) {
                frame.pushStackItem(UInt256.fromBytes(account.getCodeHash()));
            } else {
                frame.pushStackItem(UInt256.ZERO);
            }
            return new OperationResult(optionalCost, Optional.empty());
        }
    } catch (final FixedStack.UnderflowException ufe) {
        return new OperationResult(Optional.of(cost(true)), Optional.of(ExceptionalHaltReason.INSUFFICIENT_STACK_ITEMS));
    }
}

Example 5 with Gas

use of org.hyperledger.besu.evm.Gas in project hedera-services by hashgraph.

the class HederaSLoadOperation method execute.

@Override
public OperationResult execute(final MessageFrame frame, final EVM evm) {
    try {
        final Account account = frame.getWorldUpdater().get(frame.getRecipientAddress());
        final Address address = account.getAddress();
        final Bytes32 key = UInt256.fromBytes(frame.popStackItem());
        final boolean slotIsWarm = frame.warmUpStorage(address, key);
        final Optional<Gas> optionalCost = slotIsWarm ? warmCost : coldCost;
        if (frame.getRemainingGas().compareTo(optionalCost.orElse(Gas.ZERO)) < 0) {
            return new OperationResult(optionalCost, Optional.of(ExceptionalHaltReason.INSUFFICIENT_GAS));
        } else {
            UInt256 storageValue = account.getStorageValue(UInt256.fromBytes(key));
            if (dynamicProperties.shouldEnableTraceability()) {
                HederaOperationUtil.cacheExistingValue(frame, address, key, storageValue);
            }
            frame.pushStackItem(storageValue);
            return slotIsWarm ? warmSuccess : coldSuccess;
        }
    } catch (final UnderflowException ufe) {
        return new OperationResult(warmCost, Optional.of(ExceptionalHaltReason.INSUFFICIENT_STACK_ITEMS));
    } catch (final OverflowException ofe) {
        return new OperationResult(warmCost, Optional.of(ExceptionalHaltReason.TOO_MANY_STACK_ITEMS));
    }
}