From e8f229b82ef99213f8f84b8a71f752b236024494 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= <peterke@gmail.com>
Date: Wed, 29 Aug 2018 12:21:12 +0300
Subject: cmd, core, eth, miner, params: configurable gas floor and ceil

---
 miner/miner.go         | 4 ++--
 miner/stress_clique.go | 2 ++
 miner/stress_ethash.go | 2 ++
 miner/worker.go        | 9 +++++++--
 miner/worker_test.go   | 2 +-
 5 files changed, 14 insertions(+), 5 deletions(-)

(limited to 'miner')

diff --git a/miner/miner.go b/miner/miner.go
index c5a0c9d62..7f194db26 100644
--- a/miner/miner.go
+++ b/miner/miner.go
@@ -52,13 +52,13 @@ type Miner struct {
 	shouldStart int32 // should start indicates whether we should start after sync
 }
 
-func New(eth Backend, config *params.ChainConfig, mux *event.TypeMux, engine consensus.Engine, recommit time.Duration) *Miner {
+func New(eth Backend, config *params.ChainConfig, mux *event.TypeMux, engine consensus.Engine, recommit time.Duration, gasFloor, gasCeil uint64) *Miner {
 	miner := &Miner{
 		eth:      eth,
 		mux:      mux,
 		engine:   engine,
 		exitCh:   make(chan struct{}),
-		worker:   newWorker(config, engine, eth, mux, recommit),
+		worker:   newWorker(config, engine, eth, mux, recommit, gasFloor, gasCeil),
 		canStart: 1,
 	}
 	go miner.update()
diff --git a/miner/stress_clique.go b/miner/stress_clique.go
index 8545b9413..8961091d5 100644
--- a/miner/stress_clique.go
+++ b/miner/stress_clique.go
@@ -206,6 +206,8 @@ func makeSealer(genesis *core.Genesis, nodes []string) (*node.Node, error) {
 			DatabaseHandles: 256,
 			TxPool:          core.DefaultTxPoolConfig,
 			GPO:             eth.DefaultConfig.GPO,
+			MinerGasFloor:   genesis.GasLimit * 9 / 10,
+			MinerGasCeil:    genesis.GasLimit * 11 / 10,
 			MinerGasPrice:   big.NewInt(1),
 			MinerRecommit:   time.Second,
 		})
diff --git a/miner/stress_ethash.go b/miner/stress_ethash.go
index 4ed8aeee4..5ed11d73a 100644
--- a/miner/stress_ethash.go
+++ b/miner/stress_ethash.go
@@ -186,6 +186,8 @@ func makeMiner(genesis *core.Genesis, nodes []string) (*node.Node, error) {
 			TxPool:          core.DefaultTxPoolConfig,
 			GPO:             eth.DefaultConfig.GPO,
 			Ethash:          eth.DefaultConfig.Ethash,
+			MinerGasFloor:   genesis.GasLimit * 9 / 10,
+			MinerGasCeil:    genesis.GasLimit * 11 / 10,
 			MinerGasPrice:   big.NewInt(1),
 			MinerRecommit:   time.Second,
 		})
diff --git a/miner/worker.go b/miner/worker.go
index ca68da6e9..5348cb3f1 100644
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -127,6 +127,9 @@ type worker struct {
 	eth    Backend
 	chain  *core.BlockChain
 
+	gasFloor uint64
+	gasCeil  uint64
+
 	// Subscriptions
 	mux          *event.TypeMux
 	txsCh        chan core.NewTxsEvent
@@ -171,13 +174,15 @@ type worker struct {
 	resubmitHook func(time.Duration, time.Duration) // Method to call upon updating resubmitting interval.
 }
 
-func newWorker(config *params.ChainConfig, engine consensus.Engine, eth Backend, mux *event.TypeMux, recommit time.Duration) *worker {
+func newWorker(config *params.ChainConfig, engine consensus.Engine, eth Backend, mux *event.TypeMux, recommit time.Duration, gasFloor, gasCeil uint64) *worker {
 	worker := &worker{
 		config:             config,
 		engine:             engine,
 		eth:                eth,
 		mux:                mux,
 		chain:              eth.BlockChain(),
+		gasFloor:           gasFloor,
+		gasCeil:            gasCeil,
 		possibleUncles:     make(map[common.Hash]*types.Block),
 		unconfirmed:        newUnconfirmedBlocks(eth.BlockChain(), miningLogAtDepth),
 		pendingTasks:       make(map[common.Hash]*task),
@@ -807,7 +812,7 @@ func (w *worker) commitNewWork(interrupt *int32, noempty bool) {
 	header := &types.Header{
 		ParentHash: parent.Hash(),
 		Number:     num.Add(num, common.Big1),
-		GasLimit:   core.CalcGasLimit(parent),
+		GasLimit:   core.CalcGasLimit(parent, w.gasFloor, w.gasCeil),
 		Extra:      w.extra,
 		Time:       big.NewInt(tstamp),
 	}
diff --git a/miner/worker_test.go b/miner/worker_test.go
index 16708c18c..9f9a3b4a5 100644
--- a/miner/worker_test.go
+++ b/miner/worker_test.go
@@ -119,7 +119,7 @@ func (b *testWorkerBackend) PostChainEvents(events []interface{}) {
 func newTestWorker(t *testing.T, chainConfig *params.ChainConfig, engine consensus.Engine) (*worker, *testWorkerBackend) {
 	backend := newTestWorkerBackend(t, chainConfig, engine)
 	backend.txPool.AddLocals(pendingTxs)
-	w := newWorker(chainConfig, engine, backend, new(event.TypeMux), time.Second)
+	w := newWorker(chainConfig, engine, backend, new(event.TypeMux), time.Second, params.GenesisGasLimit, params.GenesisGasLimit)
 	w.setEtherbase(testBankAddress)
 	return w, backend
 }
-- 
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