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core: fix race condition in WriteMipmapBloom

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Bas van Kervel 2017-01-09 11:30:06 +01:00 committed by Péter Szilágyi
parent 88cc1ca55a
commit 2fed476ce1
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1 changed files with 6 additions and 0 deletions
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6
core/database_util.go
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@ -23,6 +23,7 @@ import (
"errors"
"fmt"
"math/big"
"sync"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
@ -63,6 +64,8 @@ var (
oldBlockHashPrefix = []byte("block-hash-") // [deprecated by the header/block split, remove eventually]
ChainConfigNotFoundErr = errors.New("ChainConfig not found") // general config not found error
mipmapBloomMu sync.Mutex // protect against race condition when updating mipmap blooms
)
// encodeBlockNumber encodes a block number as big endian uint64
@ -564,6 +567,9 @@ func mipmapKey(num, level uint64) []byte {
// WriteMapmapBloom writes each address included in the receipts' logs to the
// MIP bloom bin.
func WriteMipmapBloom(db ethdb.Database, number uint64, receipts types.Receipts) error {
mipmapBloomMu.Lock()
defer mipmapBloomMu.Unlock()
batch := db.NewBatch()
for _, level := range MIPMapLevels {
key := mipmapKey(number, level)