cerc-io/plugeth
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Quad mem & log changes

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obscuren 2015-03-03 11:56:43 +01:00
parent 49da6a8d80
commit ba0a758d8c
2 changed files with 15 additions and 10 deletions
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7
vm/common.go
View File

@ -41,13 +41,14 @@ var (
GasStorageGet = big.NewInt(50)
GasStorageAdd = big.NewInt(20000)
GasStorageMod = big.NewInt(5000)
GasLogBase = big.NewInt(2000)
GasLogTopic = big.NewInt(2000)
GasLogBase = big.NewInt(375)
GasLogTopic = big.NewInt(375)
GasLogByte = big.NewInt(8)
GasCreate = big.NewInt(32000)
GasCreateByte = big.NewInt(300)
GasCall = big.NewInt(40)
GasCallValueTransfer = big.NewInt(6700)
GasCallValueTransfer = big.NewInt(9000)
GasStipend = big.NewInt(2300)
GasCallNewAccount = big.NewInt(25000)
GasReturn = big.NewInt(0)
GasStop = big.NewInt(0)

18
vm/vm.go
View File

@ -399,7 +399,7 @@ func (self *Vm) Run(me, caller ContextRef, code []byte, value, gas, price *big.I
stack.Push(ethutil.BigD(data))
self.Printf(" => %x", data)
self.Printf(" => (%v) %x", size, data)
// 0x30 range
case ADDRESS:
stack.Push(ethutil.BigD(context.Address()))
@ -690,6 +690,10 @@ func (self *Vm) Run(me, caller ContextRef, code []byte, value, gas, price *big.I
// Get the arguments from the memory
args := mem.Get(inOffset.Int64(), inSize.Int64())
if len(value.Bytes()) > 0 {
gas.Add(gas, GasStipend)
}
var (
ret []byte
err error
@ -938,7 +942,7 @@ func (self *Vm) calculateGasAndSize(context *Context, caller ContextRef, op OpCo
gas.Add(gas, GasCallNewAccount)
}
if len(stack.data[stack.Len()-1].Bytes()) > 0 {
if len(stack.data[stack.Len()-3].Bytes()) > 0 {
gas.Add(gas, GasCallValueTransfer)
}
}
@ -951,7 +955,8 @@ func (self *Vm) calculateGasAndSize(context *Context, caller ContextRef, op OpCo
}
if newMemSize.Cmp(ethutil.Big0) > 0 {
newMemSize = toWordSize(newMemSize)
newMemSizeWords := toWordSize(newMemSize)
newMemSize.Mul(newMemSizeWords, u256(32))
if newMemSize.Cmp(u256(int64(mem.Len()))) > 0 {
//memGasUsage := new(big.Int).Sub(newMemSize, u256(int64(mem.Len())))
@ -959,20 +964,19 @@ func (self *Vm) calculateGasAndSize(context *Context, caller ContextRef, op OpCo
//memGasUsage.Div(memGasUsage, u256(32))
//Old: full_memory_gas_cost = W + floor(W*W / 1024), W = words in memory
pow := new(big.Int).Exp(oldSize, ethutil.Big2, Zero)
oldSize := toWordSize(big.NewInt(int64(mem.Len())))
pow := new(big.Int).Exp(oldSize, ethutil.Big2, Zero)
linCoef := new(big.Int).Mul(oldSize, GasMemWord)
quadCoef := new(big.Int).Div(pow, GasQuadCoeffDenom)
oldTotalFee := new(big.Int).Add(linCoef, quadCoef)
pow.Exp(newMemSize, ethutil.Big2, Zero)
linCoef = new(big.Int).Mul(newMemSize, GasMemWord)
pow.Exp(newMemSizeWords, ethutil.Big2, Zero)
linCoef = new(big.Int).Mul(newMemSizeWords, GasMemWord)
quadCoef = new(big.Int).Div(pow, GasQuadCoeffDenom)
newTotalFee := new(big.Int).Add(linCoef, quadCoef)
gas.Add(gas, new(big.Int).Sub(newTotalFee, oldTotalFee))
}
}
return newMemSize, gas