123 lines
4.5 KiB
Go
123 lines
4.5 KiB
Go
// Copyright 2021 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package state
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import (
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"math/big"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/holiman/uint256"
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)
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func filledStateDB() *StateDB {
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state, _ := New(types.EmptyRootHash, NewDatabase(rawdb.NewMemoryDatabase()), nil)
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// Create an account and check if the retrieved balance is correct
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addr := common.HexToAddress("0xaffeaffeaffeaffeaffeaffeaffeaffeaffeaffe")
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skey := common.HexToHash("aaa")
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sval := common.HexToHash("bbb")
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state.SetBalance(addr, uint256.NewInt(42)) // Change the account trie
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state.SetCode(addr, []byte("hello")) // Change an external metadata
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state.SetState(addr, skey, sval) // Change the storage trie
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for i := 0; i < 100; i++ {
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sk := common.BigToHash(big.NewInt(int64(i)))
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state.SetState(addr, sk, sk) // Change the storage trie
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}
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return state
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}
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func prefetchGuaranteed(prefetcher *triePrefetcher, owner common.Hash, root common.Hash, addr common.Address, keys [][]byte) {
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prefetcher.prefetch(owner, root, addr, keys)
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for {
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if len(prefetcher.prefetchChan) == 0 {
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return
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}
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time.Sleep(1 * time.Millisecond)
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}
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}
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func TestCopyAndClose(t *testing.T) {
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db := filledStateDB()
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prefetcher := newTriePrefetcher(db.db, db.originalRoot, common.Hash{}, "")
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skey := common.HexToHash("aaa")
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prefetchGuaranteed(prefetcher, common.Hash{}, db.originalRoot, common.Address{}, [][]byte{skey.Bytes()})
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prefetchGuaranteed(prefetcher, common.Hash{}, db.originalRoot, common.Address{}, [][]byte{skey.Bytes()})
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time.Sleep(1 * time.Second)
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a := prefetcher.trie(common.Hash{}, db.originalRoot)
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prefetchGuaranteed(prefetcher, common.Hash{}, db.originalRoot, common.Address{}, [][]byte{skey.Bytes()})
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b := prefetcher.trie(common.Hash{}, db.originalRoot)
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cpy := prefetcher.copy()
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prefetchGuaranteed(cpy, common.Hash{}, db.originalRoot, common.Address{}, [][]byte{skey.Bytes()})
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prefetchGuaranteed(cpy, common.Hash{}, db.originalRoot, common.Address{}, [][]byte{skey.Bytes()})
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c := cpy.trie(common.Hash{}, db.originalRoot)
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prefetcher.close()
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cpy2 := cpy.copy()
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prefetchGuaranteed(cpy2, common.Hash{}, db.originalRoot, common.Address{}, [][]byte{skey.Bytes()})
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d := cpy2.trie(common.Hash{}, db.originalRoot)
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cpy.close()
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cpy2.close()
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if a.Hash() != b.Hash() || a.Hash() != c.Hash() || a.Hash() != d.Hash() {
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t.Fatalf("Invalid trie, hashes should be equal: %v %v %v %v", a.Hash(), b.Hash(), c.Hash(), d.Hash())
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}
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}
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func TestUseAfterClose(t *testing.T) {
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db := filledStateDB()
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prefetcher := newTriePrefetcher(db.db, db.originalRoot, common.Hash{}, "")
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skey := common.HexToHash("aaa")
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prefetchGuaranteed(prefetcher, common.Hash{}, db.originalRoot, common.Address{}, [][]byte{skey.Bytes()})
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a := prefetcher.trie(common.Hash{}, db.originalRoot)
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prefetcher.close()
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b := prefetcher.trie(common.Hash{}, db.originalRoot)
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if a == nil {
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t.Fatal("Prefetching before close should not return nil")
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}
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if b != nil {
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t.Fatal("Trie after close should return nil")
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}
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}
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func TestCopyClose(t *testing.T) {
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db := filledStateDB()
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prefetcher := newTriePrefetcher(db.db, db.originalRoot, common.Hash{}, "")
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skey := common.HexToHash("aaa")
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prefetchGuaranteed(prefetcher, common.Hash{}, db.originalRoot, common.Address{}, [][]byte{skey.Bytes()})
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cpy := prefetcher.copy()
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a := prefetcher.trie(common.Hash{}, db.originalRoot)
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b := cpy.trie(common.Hash{}, db.originalRoot)
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prefetcher.close()
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c := prefetcher.trie(common.Hash{}, db.originalRoot)
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d := cpy.trie(common.Hash{}, db.originalRoot)
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if a == nil {
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t.Fatal("Prefetching before close should not return nil")
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}
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if b == nil {
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t.Fatal("Copy trie should return nil")
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}
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if c != nil {
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t.Fatal("Trie after close should return nil")
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}
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if d == nil {
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t.Fatal("Copy trie should not return nil")
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}
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}
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