From 445feaeef58bd89a113743dccf6fd5df55cde6fa Mon Sep 17 00:00:00 2001 From: Jeffrey Wilcke Date: Thu, 20 Oct 2016 13:36:29 +0200 Subject: 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 --- core/config.go | 63 ---------------------------------------------------------- 1 file changed, 63 deletions(-) delete mode 100644 core/config.go (limited to 'core/config.go') diff --git a/core/config.go b/core/config.go deleted file mode 100644 index 96e39ea3c..000000000 --- a/core/config.go +++ /dev/null @@ -1,63 +0,0 @@ -// 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 . - -package core - -import ( - "errors" - "math/big" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core/vm" - "github.com/ethereum/go-ethereum/params" -) - -var ChainConfigNotFoundErr = errors.New("ChainConfig not found") // general config not found error - -// 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 - - HomesteadGasRepriceBlock *big.Int `json:"homesteadGasRepriceBlock"` // Homestead gas reprice switch block (nil = no fork) - HomesteadGasRepriceHash common.Hash `json:"homesteadGasRepriceHash"` // Homestead gas reprice switch block hash (fast sync aid) - - VmConfig vm.Config `json:"-"` -} - -// 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) params.GasTable { - if c.HomesteadGasRepriceBlock == nil || num == nil || num.Cmp(c.HomesteadGasRepriceBlock) < 0 { - return params.GasTableHomestead - } - - return params.GasTableHomesteadGasRepriceFork -} -- cgit v1.2.3