Merge pull request #3111 from obscuren/gas-price-fork

core, core/vm: added gas price variance table (EIP #150)

1 files changed, 65 insertions, 0 deletions

diff --git a/params/gas_table.go b/params/gas_table.go
new file mode 100644
index 000000000..98f00a7ee
--- /dev/null
+++ b/params/gas_table.go
@@ -0,0 +1,65 @@
+// 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"
+
+type GasTable struct {
+	ExtcodeSize *big.Int
+	ExtcodeCopy *big.Int
+	Balance     *big.Int
+	SLoad       *big.Int
+	Calls       *big.Int
+	Suicide     *big.Int
+
+	// CreateBySuicide occurs when the
+	// refunded account is one that does
+	// not exist. This logic is similar
+	// to call. May be left nil. Nil means
+	// not charged.
+	CreateBySuicide *big.Int
+}
+
+var (
+	// GasTableHomestead contain the gas prices for
+	// the homestead phase.
+	GasTableHomestead = GasTable{
+		ExtcodeSize: big.NewInt(20),
+		ExtcodeCopy: big.NewInt(20),
+		Balance:     big.NewInt(20),
+		SLoad:       big.NewInt(50),
+		Calls:       big.NewInt(40),
+		Suicide:     big.NewInt(0),
+
+		// explicitly set to nil to indicate
+		// this rule does not apply to homestead.
+		CreateBySuicide: nil,
+	}
+
+	// GasTableHomestead contain the gas re-prices for
+	// the homestead phase.
+	GasTableHomesteadGasRepriceFork = 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),
+
+		CreateBySuicide: big.NewInt(25000),
+	}
+)