gas

package
v0.6.2 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Jul 22, 2019 License: GPL-3.0 Imports: 14 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	WasmCostsRegular       = 1
	WasmCostsDiv           = 16
	WasmCostsMul           = 4
	WasmCostsMem           = 2
	WasmCostsStaticU256    = 64
	WasmCostsStaticHash    = 64
	WasmCostsStaticAddress = 40
	/// Memory stipend. Amount of free memory (in 64kb pages) each contract can use for stack.
	WasmCostsInitialMem = 4096
	/// Grow memory cost, per page (64kb)
	WasmCostsGrowMem        = 8192
	WasmCostsMemcpy         = 1
	WasmCostsMaxStackHeight = 64 * 1024
	WasmCostsOpcodesMul     = 3
	WasmCostsOpcodesDiv     = 8
)
View Source 
const ErrorDisableFloatingPoint = "Wasm contract error: disabled floating point"
View Source 
const ErrorGasLimit = "Invocation resulted in gas limit violated"
View Source 
const ErrorInitialMemLimit = "Initial memory limit"

Variables

This section is empty.

Functions

func InjectCounter 

func InjectCounter(disassembly []disasm.Instr, module *wasm.Module, rule Gas) []disasm.Instr

Types

type BlockEntry 

type BlockEntry struct {
	// contains filtered or unexported fields
}

type BlockEntrys 

type BlockEntrys []*BlockEntry

func (BlockEntrys) Len 

func (block BlockEntrys) Len() int

func (BlockEntrys) Less 

func (block BlockEntrys) Less(i, j int) bool

func (BlockEntrys) Swap 

func (block BlockEntrys) Swap(i, j int)

type Counter 

type Counter struct {
	// contains filtered or unexported fields
}

func NewCounter 

func NewCounter() *Counter

func (*Counter) Begin 

func (counter *Counter) Begin(cursor int)

func (*Counter) Finalize 

func (counter *Counter) Finalize()

func (*Counter) Increment 

func (counter *Counter) Increment(value uint64, index int)

type Gas 

type Gas struct {
	Ops   map[byte]InstructionType
	Rules map[InstructionType]GasValue
}

func NewGas 

func NewGas(disableFloatingPoint bool) Gas

func (Gas) GasCost 

func (gas Gas) GasCost(op byte) uint64

type GasCounter 

type GasCounter struct {
	Contract *contract.WASMContract
	GasTable params.GasTable
}

func NewGasCounter 

func NewGasCounter(contract *contract.WASMContract, gasTable params.GasTable) GasCounter

func (GasCounter) AdjustedCharge 

func (gas GasCounter) AdjustedCharge(amount uint64)

func (GasCounter) Charge 

func (gas GasCounter) Charge(amount uint64)

func (GasCounter) ChargeGas 

func (gas GasCounter) ChargeGas(amount uint64) bool

func (GasCounter) GasAssert 

func (gas GasCounter) GasAssert()

func (GasCounter) GasCall 

func (gas GasCounter) GasCall(address common.Address, value, gasLimit, blockNumber *big.Int, chainConfig *params.ChainConfig, statedb *state.StateDB) uint64

func (GasCounter) GasConcat 

func (gas GasCounter) GasConcat(size uint64)

func (GasCounter) GasCostZero 

func (gas GasCounter) GasCostZero()

func (GasCounter) GasEcrecover added in v0.6.2 

func (gas GasCounter) GasEcrecover()

func (GasCounter) GasEqual 

func (gas GasCounter) GasEqual()

func (GasCounter) GasFastestStep 

func (gas GasCounter) GasFastestStep()

func (GasCounter) GasFromI64 

func (gas GasCounter) GasFromI64()

func (GasCounter) GasFromU64 

func (gas GasCounter) GasFromU64()

func (GasCounter) GasGetBalanceFromAddress 

func (gas GasCounter) GasGetBalanceFromAddress()

func (GasCounter) GasGetBlockHash 

func (gas GasCounter) GasGetBlockHash()

func (GasCounter) GasGetBlockNumber 

func (gas GasCounter) GasGetBlockNumber()

func (GasCounter) GasGetBlockProduser 

func (gas GasCounter) GasGetBlockProduser()

func (GasCounter) GasGetContractAddress 

func (gas GasCounter) GasGetContractAddress()

func (GasCounter) GasGetGas 

func (gas GasCounter) GasGetGas()

func (GasCounter) GasGetGasLimit 

func (gas GasCounter) GasGetGasLimit()

func (GasCounter) GasGetOrigin 

func (gas GasCounter) GasGetOrigin()

func (GasCounter) GasGetSender 

func (gas GasCounter) GasGetSender()

func (GasCounter) GasGetTimestamp 

func (gas GasCounter) GasGetTimestamp()

func (GasCounter) GasGetValue 

func (gas GasCounter) GasGetValue()

func (GasCounter) GasInitialMemory 

func (gas GasCounter) GasInitialMemory(initial uint64)

func (GasCounter) GasLoad 

func (gas GasCounter) GasLoad()

func (GasCounter) GasLog 

func (gas GasCounter) GasLog(size uint64, topics uint64)

func (GasCounter) GasMemoryCost 

func (gas GasCounter) GasMemoryCost(size uint64)

func (GasCounter) GasPow 

func (gas GasCounter) GasPow(exponent *big.Int)

func (GasCounter) GasQuickStep 

func (gas GasCounter) GasQuickStep()

func (GasCounter) GasReturnAddress 

func (gas GasCounter) GasReturnAddress()

func (GasCounter) GasReturnHash 

func (gas GasCounter) GasReturnHash()

func (GasCounter) GasReturnPointer 

func (gas GasCounter) GasReturnPointer(size uint64)

func (GasCounter) GasReturnU256 

func (gas GasCounter) GasReturnU256()

func (GasCounter) GasRevert 

func (gas GasCounter) GasRevert()

func (GasCounter) GasSHA3 

func (gas GasCounter) GasSHA3(size uint64)

todo 验证sha3 gas消耗，和evm保持一致

func (GasCounter) GasSendFromContract 

func (gas GasCounter) GasSendFromContract()

func (GasCounter) GasStore 

func (gas GasCounter) GasStore(stateDb *state.StateDB, contractAddr common.Address, loc common.Hash, value common.Hash)

func (GasCounter) GasToI64 

func (gas GasCounter) GasToI64()

func (GasCounter) GasToU64 

func (gas GasCounter) GasToU64()

type GasValue 

type GasValue struct {
	Metering Metering
	Value    uint64
}

type InstructionType 

type InstructionType int
const (
	InstructionTypeBit InstructionType = iota
	InstructionTypeAdd
	InstructionTypeMul
	InstructionTypeDiv
	InstructionTypeLoad
	InstructionTypeStore
	InstructionTypeConst
	InstructionTypeFloatConst
	InstructionTypeLocal
	InstructionTypeGlobal
	InstructionTypeControlFlow
	InstructionTypeIntegerComparsion
	InstructionTypeFloatComparsion
	InstructionTypeFloat
	InstructionTypeConversion
	InstructionTypeFloatConversion
	InstructionTypeReinterpretation
	InstructionTypeUnreachable
	InstructionTypeNop
	InstructionTypeCurrentMemory
	InstructionTypeGrowMemory
)

type Metering 

type Metering int
const (
	MeteringRegular Metering = iota
	MeteringForbidden
	MeteringFixed
)

Source Files

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