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Moved gas limit err check to buy gas

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This commit is contained in:
obscuren
2014-06-16 11:14:01 +02:00
parent b836267401
commit 9f62d441a7
5 changed files with 59 additions and 42 deletions
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65
ethchain/vm.go
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@ -169,7 +169,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
case CALL:
require(7)
gas.Set(GasCall)
addStepGasUsage(stack.data[stack.Len()-1])
addStepGasUsage(stack.data[stack.Len()-2])
x := stack.data[stack.Len()-6].Uint64() + stack.data[stack.Len()-7].Uint64()
y := stack.data[stack.Len()-4].Uint64() + stack.data[stack.Len()-5].Uint64()
@ -529,6 +529,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
vm.state.UpdateStateObject(contract)
}
case CALL:
// TODO RE-WRITE
require(7)
// Closure addr
addr := stack.Pop()
@ -538,46 +539,44 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
inSize, inOffset := stack.Popn()
// Pop return size and offset
retSize, retOffset := stack.Popn()
// Make sure there's enough gas
if closure.Gas.Cmp(gas) < 0 {
stack.Push(ethutil.BigFalse)
break
}
// Get the arguments from the memory
args := mem.Get(inOffset.Int64(), inSize.Int64())
snapshot := vm.state.Snapshot()
// Fetch the contract which will serve as the closure body
contract := vm.state.GetStateObject(addr.Bytes())
closure.object.Nonce += 1
if closure.object.Amount.Cmp(value) < 0 {
ethutil.Config.Log.Debugf("Insufficient funds to transfer value. Req %v, has %v", value, closure.object.Amount)
if contract != nil {
// Prepay for the gas
//closure.UseGas(gas)
// Add the value to the state object
contract.AddAmount(value)
// Create a new callable closure
closure := NewClosure(closure, contract, contract.script, vm.state, gas, closure.Price)
// Executer the closure and get the return value (if any)
ret, _, err := closure.Call(vm, args, hook)
if err != nil {
stack.Push(ethutil.BigFalse)
// Reset the changes applied this object
vm.state.Revert(snapshot)
} else {
stack.Push(ethutil.BigTrue)
vm.state.UpdateStateObject(contract)
mem.Set(retOffset.Int64(), retSize.Int64(), ret)
}
} else {
ethutil.Config.Log.Debugf("Contract %x not found\n", addr.Bytes())
stack.Push(ethutil.BigFalse)
} else {
// Fetch the contract which will serve as the closure body
contract := vm.state.GetStateObject(addr.Bytes())
if contract != nil {
// Add the value to the state object
contract.AddAmount(value)
// Create a new callable closure
closure := NewClosure(closure, contract, contract.script, vm.state, gas, closure.Price)
// Executer the closure and get the return value (if any)
ret, _, err := closure.Call(vm, args, hook)
if err != nil {
stack.Push(ethutil.BigFalse)
// Reset the changes applied this object
vm.state.Revert(snapshot)
} else {
stack.Push(ethutil.BigTrue)
vm.state.UpdateStateObject(contract)
mem.Set(retOffset.Int64(), retSize.Int64(), ret)
}
} else {
ethutil.Config.Log.Debugf("Contract %x not found\n", addr.Bytes())
stack.Push(ethutil.BigFalse)
}
}
case RETURN:
require(2)