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authorJeffrey Wilcke <jeffrey@ethereum.org>2016-10-20 19:36:29 +0800
committerJeffrey Wilcke <jeffrey@ethereum.org>2016-11-13 17:44:04 +0800
commit445feaeef58bd89a113743dccf6fd5df55cde6fa (patch)
tree6c692a0989800f005a94bde2d372fcbe1f7630a1 /params
parent932d973e36ff0d41a6005b93d2d4ff1b4430fb04 (diff)
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core, core/state, trie: EIP158, reprice & skip empty account write
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>
Diffstat (limited to 'params')
-rw-r--r--params/config.go84
-rw-r--r--params/gas_table.go22
2 files changed, 106 insertions, 0 deletions
diff --git a/params/config.go b/params/config.go
new file mode 100644
index 000000000..684e4dc42
--- /dev/null
+++ b/params/config.go
@@ -0,0 +1,84 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package params
+
+import (
+ "math/big"
+
+ "github.com/ethereum/go-ethereum/common"
+)
+
+// ChainConfig is the core config which determines the blockchain settings.
+//
+// ChainConfig is stored in the database on a per block basis. This means
+// that any network, identified by its genesis block, can have its own
+// set of configuration options.
+type ChainConfig struct {
+ HomesteadBlock *big.Int `json:"homesteadBlock"` // Homestead switch block (nil = no fork, 0 = already homestead)
+ DAOForkBlock *big.Int `json:"daoForkBlock"` // TheDAO hard-fork switch block (nil = no fork)
+ DAOForkSupport bool `json:"daoForkSupport"` // Whether the nodes supports or opposes the DAO hard-fork
+
+ // EIP150 implements the Gas price changes (https://github.com/ethereum/EIPs/issues/150)
+ EIP150Block *big.Int `json:"EIP150Block"` // EIP150 HF block (nil = no fork)
+ EIP150Hash common.Hash `json:"EIP150Hash"` // EIP150 HF hash (fast sync aid)
+
+ EIP158Block *big.Int `json:"EIP158Block"` // EIP158 HF block
+}
+
+var TestChainConfig = &ChainConfig{new(big.Int), new(big.Int), true, new(big.Int), common.Hash{}, new(big.Int)}
+
+// IsHomestead returns whether num is either equal to the homestead block or greater.
+func (c *ChainConfig) IsHomestead(num *big.Int) bool {
+ if c.HomesteadBlock == nil || num == nil {
+ return false
+ }
+ return num.Cmp(c.HomesteadBlock) >= 0
+}
+
+// GasTable returns the gas table corresponding to the current phase (homestead or homestead reprice).
+//
+// The returned GasTable's fields shouldn't, under any circumstances, be changed.
+func (c *ChainConfig) GasTable(num *big.Int) GasTable {
+ if num == nil {
+ return GasTableHomestead
+ }
+
+ switch {
+ case c.EIP158Block != nil && num.Cmp(c.EIP158Block) >= 0:
+ return GasTableEIP158
+ case c.EIP150Block != nil && num.Cmp(c.EIP150Block) >= 0:
+ return GasTableHomesteadGasRepriceFork
+ default:
+ return GasTableHomestead
+ }
+}
+
+func (c *ChainConfig) IsEIP150(num *big.Int) bool {
+ if c.EIP150Block == nil || num == nil {
+ return false
+ }
+ return num.Cmp(c.EIP150Block) >= 0
+
+}
+
+func (c *ChainConfig) IsEIP158(num *big.Int) bool {
+ if c.EIP158Block == nil || num == nil {
+ return false
+ }
+ return num.Cmp(c.EIP158Block) >= 0
+
+}
diff --git a/params/gas_table.go b/params/gas_table.go
index 98f00a7ee..3b27cd522 100644
--- a/params/gas_table.go
+++ b/params/gas_table.go
@@ -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),
}