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-rw-r--r--Godeps/_workspace/src/github.com/ethereum/ethash/ethash.go6
1 files changed, 4 insertions, 2 deletions
diff --git a/Godeps/_workspace/src/github.com/ethereum/ethash/ethash.go b/Godeps/_workspace/src/github.com/ethereum/ethash/ethash.go
index 6f1302bb8..1f615058d 100644
--- a/Godeps/_workspace/src/github.com/ethereum/ethash/ethash.go
+++ b/Godeps/_workspace/src/github.com/ethereum/ethash/ethash.go
@@ -102,7 +102,9 @@ func makeParamsAndCache(chainManager pow.ChainManager, blockNum uint64) (*Params
func (pow *Ethash) UpdateCache(force bool) error {
pow.cacheMutex.Lock()
- thisEpoch := pow.chainManager.CurrentBlock().NumberU64()
+ defer pow.cacheMutex.Unlock()
+
+ thisEpoch := pow.chainManager.CurrentBlock().NumberU64() / epochLength
if force || pow.paramsAndCache.Epoch != thisEpoch {
var err error
pow.paramsAndCache, err = makeParamsAndCache(pow.chainManager, pow.chainManager.CurrentBlock().NumberU64())
@@ -110,7 +112,7 @@ func (pow *Ethash) UpdateCache(force bool) error {
panic(err)
}
}
- pow.cacheMutex.Unlock()
+
return nil
}