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core, core/state, trie: EIP158, reprice & skip empty account write

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This commit implements EIP158 part 1, 2, 3 & 4

1. If an account is empty it's no longer written to the trie. An empty
  account is defined as (balance=0, nonce=0, storage=0, code=0).
2. Delete an empty account if it's touched
3. An empty account is redefined as either non-existent or empty.
4. Zero value calls and zero value suicides no longer consume the 25k
  reation costs.

params: moved core/config to params

Signed-off-by: Jeffrey Wilcke <jeffrey@ethereum.org>
This commit is contained in:
Jeffrey Wilcke
2016-10-20 13:36:29 +02:00
parent 932d973e36
commit 445feaeef5
74 changed files with 729 additions and 573 deletions
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22
params/gas_table.go
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@ -26,6 +26,10 @@ type GasTable struct {
Calls *big.Int
Suicide *big.Int
Exp *big.Int
ExpOneByte *big.Int
Exp256 *big.Int
// CreateBySuicide occurs when the
// refunded account is one that does
// not exist. This logic is similar
@ -44,6 +48,7 @@ var (
SLoad: big.NewInt(50),
Calls: big.NewInt(40),
Suicide: big.NewInt(0),
Exp: big.NewInt(20),
// explicitly set to nil to indicate
// this rule does not apply to homestead.
@ -52,6 +57,8 @@ var (
// GasTableHomestead contain the gas re-prices for
// the homestead phase.
//
// TODO rename to GasTableEIP150
GasTableHomesteadGasRepriceFork = GasTable{
ExtcodeSize: big.NewInt(700),
ExtcodeCopy: big.NewInt(700),
@ -59,6 +66,21 @@ var (
SLoad: big.NewInt(200),
Calls: big.NewInt(700),
Suicide: big.NewInt(5000),
Exp: big.NewInt(20),
CreateBySuicide: big.NewInt(25000),
}
GasTableEIP158 = GasTable{
ExtcodeSize: big.NewInt(700),
ExtcodeCopy: big.NewInt(700),
Balance: big.NewInt(400),
SLoad: big.NewInt(200),
Calls: big.NewInt(700),
Suicide: big.NewInt(5000),
Exp: big.NewInt(80),
ExpOneByte: big.NewInt(160),
Exp256: big.NewInt(2640),
CreateBySuicide: big.NewInt(25000),
}