From 91eec1251c06727581063cd7e942ba913d806971 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= <peterke@gmail.com>
Date: Thu, 14 Mar 2019 15:25:12 +0200
Subject: cmd, core, eth, trie: get rid of trie cache generations (#19262)

* cmd, core, eth, trie: get rid of trie cache generations

* core, trie: get rid of remainder of cache gen boilerplate
---
 cmd/geth/chaincmd.go |  4 ----
 cmd/geth/main.go     |  1 -
 cmd/geth/usage.go    |  1 -
 cmd/utils/flags.go   | 10 ----------
 4 files changed, 16 deletions(-)

(limited to 'cmd')

diff --git a/cmd/geth/chaincmd.go b/cmd/geth/chaincmd.go
index f0e5d2619..72aace1c6 100644
--- a/cmd/geth/chaincmd.go
+++ b/cmd/geth/chaincmd.go
@@ -35,7 +35,6 @@ import (
 	"github.com/ethereum/go-ethereum/eth/downloader"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/log"
-	"github.com/ethereum/go-ethereum/trie"
 	"gopkg.in/urfave/cli.v1"
 )
 
@@ -261,9 +260,6 @@ func importChain(ctx *cli.Context) error {
 	}
 	fmt.Println(ioStats)
 
-	fmt.Printf("Trie cache misses:  %d\n", trie.CacheMisses())
-	fmt.Printf("Trie cache unloads: %d\n\n", trie.CacheUnloads())
-
 	// Print the memory statistics used by the importing
 	mem := new(runtime.MemStats)
 	runtime.ReadMemStats(mem)
diff --git a/cmd/geth/main.go b/cmd/geth/main.go
index a331abc9f..f966905a9 100644
--- a/cmd/geth/main.go
+++ b/cmd/geth/main.go
@@ -102,7 +102,6 @@ var (
 		utils.CacheDatabaseFlag,
 		utils.CacheTrieFlag,
 		utils.CacheGCFlag,
-		utils.TrieCacheGenFlag,
 		utils.ListenPortFlag,
 		utils.MaxPeersFlag,
 		utils.MaxPendingPeersFlag,
diff --git a/cmd/geth/usage.go b/cmd/geth/usage.go
index 0338e447e..a4787fff2 100644
--- a/cmd/geth/usage.go
+++ b/cmd/geth/usage.go
@@ -139,7 +139,6 @@ var AppHelpFlagGroups = []flagGroup{
 			utils.CacheDatabaseFlag,
 			utils.CacheTrieFlag,
 			utils.CacheGCFlag,
-			utils.TrieCacheGenFlag,
 		},
 	},
 	{
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index deb6df364..b648f958b 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -37,7 +37,6 @@ import (
 	"github.com/ethereum/go-ethereum/consensus/clique"
 	"github.com/ethereum/go-ethereum/consensus/ethash"
 	"github.com/ethereum/go-ethereum/core"
-	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/dashboard"
@@ -350,11 +349,6 @@ var (
 		Usage: "Percentage of cache memory allowance to use for trie pruning (default = 25% full mode, 0% archive mode)",
 		Value: 25,
 	}
-	TrieCacheGenFlag = cli.IntFlag{
-		Name:  "trie-cache-gens",
-		Usage: "Number of trie node generations to keep in memory",
-		Value: int(state.MaxTrieCacheGen),
-	}
 	// Miner settings
 	MiningEnabledFlag = cli.BoolFlag{
 		Name:  "mine",
@@ -1432,10 +1426,6 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
 			cfg.MinerGasPrice = big.NewInt(1)
 		}
 	}
-	// TODO(fjl): move trie cache generations into config
-	if gen := ctx.GlobalInt(TrieCacheGenFlag.Name); gen > 0 {
-		state.MaxTrieCacheGen = uint16(gen)
-	}
 }
 
 // SetDashboardConfig applies dashboard related command line flags to the config.
-- 
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