gaspersic/go-ethereum
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

consensus, core/*, params: metropolis preparation refactor

Browse Source 
This commit is a preparation for the upcoming metropolis hardfork. It
prepares the state, core and vm packages such that integration with
metropolis becomes less of a hassle.

* Difficulty calculation requires header instead of individual
  parameters
* statedb.StartRecord renamed to statedb.Prepare and added Finalise
  method required by metropolis, which removes unwanted accounts from
  the state (i.e. selfdestruct)
* State keeps record of destructed objects (in addition to dirty
  objects)
* core/vm pre-compiles may now return errors
* core/vm pre-compiles gas check now take the full byte slice as argument
  instead of just the size
* core/vm now keeps several hard-fork instruction tables instead of a
  single instruction table and removes the need for hard-fork checks in
  the instructions
* core/vm contains a empty restruction function which is added in
  preparation of metropolis write-only mode operations
* Adds the bn256 curve
* Adds and sets the metropolis chain config block parameters (2^64-1)
This commit is contained in:
Jeffrey Wilcke
2017-02-01 22:36:51 +01:00
parent a2f23ca9b1
commit 10a57fc3d4
28 changed files with 2865 additions and 183 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
core/chain_makers.go
View File

@ -84,7 +84,7 @@ func (b *BlockGen) AddTx(tx *types.Transaction) {
if b.gasPool == nil {
b.SetCoinbase(common.Address{})
}
b.statedb.StartRecord(tx.Hash(), common.Hash{}, len(b.txs))
b.statedb.Prepare(tx.Hash(), common.Hash{}, len(b.txs))
receipt, _, err := ApplyTransaction(b.config, nil, &b.header.Coinbase, b.gasPool, b.statedb, b.header, tx, b.header.GasUsed, vm.Config{})
if err != nil {
panic(err)
@ -142,7 +142,7 @@ func (b *BlockGen) OffsetTime(seconds int64) {
if b.header.Time.Cmp(b.parent.Header().Time) <= 0 {
panic("block time out of range")
}
b.header.Difficulty = ethash.CalcDifficulty(b.config, b.header.Time.Uint64(), b.parent.Time().Uint64(), b.parent.Number(), b.parent.Difficulty())
b.header.Difficulty = ethash.CalcDifficulty(b.config, b.header.Time.Uint64(), b.parent.Header())
}
// GenerateChain creates a chain of n blocks. The first block's
@ -209,15 +209,23 @@ func makeHeader(config *params.ChainConfig, parent *types.Block, state *state.St
} else {
time = new(big.Int).Add(parent.Time(), big.NewInt(10)) // block time is fixed at 10 seconds
}
parentHeader := parent.Header()
// adjust the parent time
parentHeader.Time = new(big.Int).Sub(time, big.NewInt(10))
return &types.Header{
Root: state.IntermediateRoot(config.IsEIP158(parent.Number())),
ParentHash: parent.Hash(),
Coinbase: parent.Coinbase(),
Difficulty: ethash.CalcDifficulty(config, time.Uint64(), new(big.Int).Sub(time, big.NewInt(10)).Uint64(), parent.Number(), parent.Difficulty()),
GasLimit: CalcGasLimit(parent),
GasUsed: new(big.Int),
Number: new(big.Int).Add(parent.Number(), common.Big1),
Time: time,
Difficulty: ethash.CalcDifficulty(config, time.Uint64(), &types.Header{
Number: parent.Number(),
Time: new(big.Int).Sub(time, big.NewInt(10)),
Difficulty: parent.Difficulty(),
}),
GasLimit: CalcGasLimit(parent),
GasUsed: new(big.Int),
Number: new(big.Int).Add(parent.Number(), common.Big1),
Time: time,
}
}