gaspersic/go-ethereum
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Moved execution from vm to chain.

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This moves call and create to the specified environments. Vms are no
longer re-used. Vm uses environment's Call(Code) and Create in order to
execute new contracts or transfer value between accounts.

State transition now uses the same mechanism described above.
This commit is contained in:
obscuren
2014-12-03 17:06:54 +01:00
parent 8240550187
commit 99853ac3ce
12 changed files with 226 additions and 1090 deletions
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55
vm/vm_debug.go
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@ -35,11 +35,26 @@ func NewDebugVm(env Environment) *DebugVm {
lt = LogTyDiff
}
return &DebugVm{env: env, logTy: lt, Recoverable: false}
return &DebugVm{env: env, logTy: lt, Recoverable: true}
}
func (self *DebugVm) RunClosure(closure *Closure) (ret []byte, err error) {
self.depth++
func (self *DebugVm) Run(me, caller ClosureRef, code []byte, value, gas, price *big.Int, callData []byte) (ret []byte, err error) {
self.env.SetDepth(self.env.Depth() + 1)
msg := self.env.State().Manifest().AddMessage(&state.Message{
To: me.Address(), From: caller.Address(),
Input: callData,
Origin: self.env.Origin(),
Block: self.env.BlockHash(), Timestamp: self.env.Time(), Coinbase: self.env.Coinbase(), Number: self.env.BlockNumber(),
Value: value,
})
closure := NewClosure(msg, caller, me, code, gas, price)
if self.env.Depth() == MaxCallDepth {
closure.UseGas(gas)
return closure.Return(nil), DepthError{}
}
if self.Recoverable {
// Recover from any require exception
@ -96,17 +111,12 @@ func (self *DebugVm) RunClosure(closure *Closure) (ret []byte, err error) {
}
)
// Debug hook
if self.Dbg != nil {
self.Dbg.SetCode(closure.Code)
}
// Don't bother with the execution if there's no code.
if len(closure.Code) == 0 {
if len(code) == 0 {
return closure.Return(nil), nil
}
vmlogger.Debugf("(%d) %x gas: %v (d) %x\n", self.depth, closure.Address(), closure.Gas, closure.Args)
vmlogger.Debugf("(%d) %x gas: %v (d) %x\n", self.depth, closure.Address(), closure.Gas, callData)
for {
prevStep = step
@ -596,8 +606,6 @@ func (self *DebugVm) RunClosure(closure *Closure) (ret []byte, err error) {
self.Printf(" => %x", caller)
case CALLVALUE:
value := closure.exe.value
stack.Push(value)
self.Printf(" => %v", value)
@ -605,27 +613,27 @@ func (self *DebugVm) RunClosure(closure *Closure) (ret []byte, err error) {
var (
offset = stack.Pop()
data = make([]byte, 32)
lenData = big.NewInt(int64(len(closure.Args)))
lenData = big.NewInt(int64(len(callData)))
)
if lenData.Cmp(offset) >= 0 {
length := new(big.Int).Add(offset, ethutil.Big32)
length = ethutil.BigMin(length, lenData)
copy(data, closure.Args[offset.Int64():length.Int64()])
copy(data, callData[offset.Int64():length.Int64()])
}
self.Printf(" => 0x%x", data)
stack.Push(ethutil.BigD(data))
case CALLDATASIZE:
l := int64(len(closure.Args))
l := int64(len(callData))
stack.Push(big.NewInt(l))
self.Printf(" => %d", l)
case CALLDATACOPY:
var (
size = int64(len(closure.Args))
size = int64(len(callData))
mOff = stack.Pop().Int64()
cOff = stack.Pop().Int64()
l = stack.Pop().Int64()
@ -638,7 +646,7 @@ func (self *DebugVm) RunClosure(closure *Closure) (ret []byte, err error) {
l = 0
}
code := closure.Args[cOff : cOff+l]
code := callData[cOff : cOff+l]
mem.Set(mOff, l, code)
@ -847,17 +855,14 @@ func (self *DebugVm) RunClosure(closure *Closure) (ret []byte, err error) {
closure.UseGas(closure.Gas)
msg := NewExecution(self, addr, input, gas, closure.Price, value)
ret, err := msg.Create(closure)
ret, err, ref := self.env.Create(closure, addr, input, gas, price, value)
if err != nil {
stack.Push(ethutil.BigFalse)
// Revert the state as it was before.
//self.env.State().Set(snapshot)
self.Printf("CREATE err %v", err)
} else {
msg.object.Code = ret
ref.SetCode(ret)
msg.Output = ret
stack.Push(ethutil.BigD(addr))
}
@ -889,14 +894,14 @@ func (self *DebugVm) RunClosure(closure *Closure) (ret []byte, err error) {
executeAddr = addr.Bytes()
}
msg := NewExecution(self, executeAddr, args, gas, closure.Price, value)
ret, err := msg.Exec(addr.Bytes(), closure)
ret, err := self.env.Call(closure, executeAddr, args, gas, price, value)
if err != nil {
stack.Push(ethutil.BigFalse)
vmlogger.Debugln(err)
} else {
stack.Push(ethutil.BigTrue)
msg.Output = ret
mem.Set(retOffset.Int64(), retSize.Int64(), ret)
}