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cmd, core, eth, trie: get rid of trie cache generations (#19262)

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

* core, trie: get rid of remainder of cache gen boilerplate
This commit is contained in:
Péter Szilágyi
2019-03-14 15:25:12 +02:00
committed by GitHub
parent e270a753be
commit 91eec1251c
21 changed files with 100 additions and 332 deletions
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72
trie/trie_test.go
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@ -19,7 +19,6 @@ package trie
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"io/ioutil"
"math/big"
@ -328,38 +327,6 @@ func (db *countingDB) Get(key []byte) ([]byte, error) {
return db.KeyValueStore.Get(key)
}
// TestCacheUnload checks that decoded nodes are unloaded after a
// certain number of commit operations.
func TestCacheUnload(t *testing.T) {
// Create test trie with two branches.
trie := newEmpty()
key1 := "---------------------------------"
key2 := "---some other branch"
updateString(trie, key1, "this is the branch of key1.")
updateString(trie, key2, "this is the branch of key2.")
root, _ := trie.Commit(nil)
trie.db.Commit(root, true)
// Commit the trie repeatedly and access key1.
// The branch containing it is loaded from DB exactly two times:
// in the 0th and 6th iteration.
diskdb := &countingDB{KeyValueStore: trie.db.diskdb, gets: make(map[string]int)}
triedb := NewDatabase(diskdb)
trie, _ = New(root, triedb)
trie.SetCacheLimit(5)
for i := 0; i < 12; i++ {
getString(trie, key1)
trie.Commit(nil)
}
// Check that it got loaded two times.
for dbkey, count := range diskdb.gets {
if count != 2 {
t.Errorf("db key %x loaded %d times, want %d times", []byte(dbkey), count, 2)
}
}
}
// randTest performs random trie operations.
// Instances of this test are created by Generate.
type randTest []randTestStep
@ -379,7 +346,6 @@ const (
opHash
opReset
opItercheckhash
opCheckCacheInvariant
opMax // boundary value, not an actual op
)
@ -458,8 +424,6 @@ func runRandTest(rt randTest) bool {
if tr.Hash() != checktr.Hash() {
rt[i].err = fmt.Errorf("hash mismatch in opItercheckhash")
}
case opCheckCacheInvariant:
rt[i].err = checkCacheInvariant(tr.root, nil, tr.cachegen, false, 0)
}
// Abort the test on error.
if rt[i].err != nil {
@ -469,40 +433,6 @@ func runRandTest(rt randTest) bool {
return true
}
func checkCacheInvariant(n, parent node, parentCachegen uint16, parentDirty bool, depth int) error {
var children []node
var flag nodeFlag
switch n := n.(type) {
case *shortNode:
flag = n.flags
children = []node{n.Val}
case *fullNode:
flag = n.flags
children = n.Children[:]
default:
return nil
}
errorf := func(format string, args ...interface{}) error {
msg := fmt.Sprintf(format, args...)
msg += fmt.Sprintf("\nat depth %d node %s", depth, spew.Sdump(n))
msg += fmt.Sprintf("parent: %s", spew.Sdump(parent))
return errors.New(msg)
}
if flag.gen > parentCachegen {
return errorf("cache invariant violation: %d > %d\n", flag.gen, parentCachegen)
}
if depth > 0 && !parentDirty && flag.dirty {
return errorf("cache invariant violation: %d > %d\n", flag.gen, parentCachegen)
}
for _, child := range children {
if err := checkCacheInvariant(child, n, flag.gen, flag.dirty, depth+1); err != nil {
return err
}
}
return nil
}
func TestRandom(t *testing.T) {
if err := quick.Check(runRandTest, nil); err != nil {
if cerr, ok := err.(*quick.CheckError); ok {
@ -626,6 +556,6 @@ func TestDecodeNode(t *testing.T) {
for i := 0; i < 5000000; i++ {
rand.Read(hash)
rand.Read(elems)
decodeNode(hash, elems, 1)
decodeNode(hash, elems)
}
}