consensus/ethash: rename utcNow to unixNow

Author: holiman

consensus/ethash/consensus.go

@@ -126,16 +126,16 @@ func (ethash *Ethash) VerifyHeaders(chain consensus.ChainHeaderReader, headers [
 
 	// Create a task channel and spawn the verifiers
 	var (
-		inputs = make(chan int)
-		done   = make(chan int, workers)
-		errors = make([]error, len(headers))
-		abort  = make(chan struct{})
-		utcNow = time.Now().Unix()
+		inputs  = make(chan int)
+		done    = make(chan int, workers)
+		errors  = make([]error, len(headers))
+		abort   = make(chan struct{})
+		unixNow = time.Now().Unix()
 	)
 	for i := 0; i < workers; i++ {
 		go func() {
 			for index := range inputs {
-				errors[index] = ethash.verifyHeaderWorker(chain, headers, seals, index, utcNow)
+				errors[index] = ethash.verifyHeaderWorker(chain, headers, seals, index, unixNow)
 				done <- index
 			}
 		}()
@@ -171,7 +171,7 @@ func (ethash *Ethash) VerifyHeaders(chain consensus.ChainHeaderReader, headers [
 	return abort, errorsOut
 }
 
-func (ethash *Ethash) verifyHeaderWorker(chain consensus.ChainHeaderReader, headers []*types.Header, seals []bool, index int, utcNow int64) error {
+func (ethash *Ethash) verifyHeaderWorker(chain consensus.ChainHeaderReader, headers []*types.Header, seals []bool, index int, unixNow int64) error {
 	var parent *types.Header
 	if index == 0 {
 		parent = chain.GetHeader(headers[0].ParentHash, headers[0].Number.Uint64()-1)
@@ -181,7 +181,7 @@ func (ethash *Ethash) verifyHeaderWorker(chain consensus.ChainHeaderReader, head
 	if parent == nil {
 		return consensus.ErrUnknownAncestor
 	}
-	return ethash.verifyHeader(chain, headers[index], parent, false, seals[index], utcNow)
+	return ethash.verifyHeader(chain, headers[index], parent, false, seals[index], unixNow)
 }
 
 // VerifyUncles verifies that the given block's uncles conform to the consensus
@@ -242,14 +242,14 @@ func (ethash *Ethash) VerifyUncles(chain consensus.ChainReader, block *types.Blo
 // verifyHeader checks whether a header conforms to the consensus rules of the
 // stock Ethereum ethash engine.
 // See YP section 4.3.4. "Block Header Validity"
-func (ethash *Ethash) verifyHeader(chain consensus.ChainHeaderReader, header, parent *types.Header, uncle bool, seal bool, utcNow int64) error {
+func (ethash *Ethash) verifyHeader(chain consensus.ChainHeaderReader, header, parent *types.Header, uncle bool, seal bool, unixNow int64) error {
 	// Ensure that the header's extra-data section is of a reasonable size
 	if uint64(len(header.Extra)) > params.MaximumExtraDataSize {
 		return fmt.Errorf("extra-data too long: %d > %d", len(header.Extra), params.MaximumExtraDataSize)
 	}
 	// Verify the header's timestamp
 	if !uncle {
-		if header.Time > uint64(utcNow+allowedFutureBlockTimeSeconds) {
+		if header.Time > uint64(unixNow+allowedFutureBlockTimeSeconds) {
 			return consensus.ErrFutureBlock
 		}
 	}