aboutsummaryrefslogtreecommitdiffstats
path: root/eth/downloader/queue.go
diff options
context:
space:
mode:
Diffstat (limited to 'eth/downloader/queue.go')
-rw-r--r--eth/downloader/queue.go160
1 files changed, 115 insertions, 45 deletions
diff --git a/eth/downloader/queue.go b/eth/downloader/queue.go
index 942ed0d63..bb8d892cd 100644
--- a/eth/downloader/queue.go
+++ b/eth/downloader/queue.go
@@ -23,6 +23,7 @@ import (
"errors"
"fmt"
"sync"
+ "sync/atomic"
"time"
"github.com/ethereum/go-ethereum/common"
@@ -93,8 +94,10 @@ type queue struct {
stateTaskQueue *prque.Prque // [eth/63] Priority queue of the hashes to fetch the node data for
statePendPool map[string]*fetchRequest // [eth/63] Currently pending node data retrieval operations
- stateDatabase ethdb.Database // [eth/63] Trie database to populate during state reassembly
- stateScheduler *state.StateSync // [eth/63] State trie synchronisation scheduler and integrator
+ stateDatabase ethdb.Database // [eth/63] Trie database to populate during state reassembly
+ stateScheduler *state.StateSync // [eth/63] State trie synchronisation scheduler and integrator
+ stateProcessors int32 // [eth/63] Number of currently running state processors
+ stateSchedLock sync.RWMutex // [eth/63] Lock serializing access to the state scheduler
resultCache []*fetchResult // Downloaded but not yet delivered fetch results
resultOffset uint64 // Offset of the first cached fetch result in the block-chain
@@ -175,18 +178,40 @@ func (q *queue) PendingReceipts() int {
// PendingNodeData retrieves the number of node data entries pending for retrieval.
func (q *queue) PendingNodeData() int {
+ q.stateSchedLock.RLock()
+ defer q.stateSchedLock.RUnlock()
+
+ if q.stateScheduler != nil {
+ return q.stateScheduler.Pending()
+ }
+ return 0
+}
+
+// InFlightBlocks retrieves whether there are block fetch requests currently in
+// flight.
+func (q *queue) InFlightBlocks() bool {
q.lock.RLock()
defer q.lock.RUnlock()
- return q.stateTaskQueue.Size()
+ return len(q.blockPendPool) > 0
}
-// InFlight retrieves the number of fetch requests currently in flight.
-func (q *queue) InFlight() int {
+// InFlightReceipts retrieves whether there are receipt fetch requests currently
+// in flight.
+func (q *queue) InFlightReceipts() bool {
q.lock.RLock()
defer q.lock.RUnlock()
- return len(q.blockPendPool) + len(q.receiptPendPool) + len(q.statePendPool)
+ return len(q.receiptPendPool) > 0
+}
+
+// InFlightNodeData retrieves whether there are node data entry fetch requests
+// currently in flight.
+func (q *queue) InFlightNodeData() bool {
+ q.lock.RLock()
+ defer q.lock.RUnlock()
+
+ return len(q.statePendPool)+int(atomic.LoadInt32(&q.stateProcessors)) > 0
}
// Idle returns if the queue is fully idle or has some data still inside. This
@@ -199,6 +224,12 @@ func (q *queue) Idle() bool {
pending := len(q.blockPendPool) + len(q.receiptPendPool) + len(q.statePendPool)
cached := len(q.blockDonePool) + len(q.receiptDonePool)
+ q.stateSchedLock.RLock()
+ if q.stateScheduler != nil {
+ queued += q.stateScheduler.Pending()
+ }
+ q.stateSchedLock.RUnlock()
+
return (queued + pending + cached) == 0
}
@@ -299,12 +330,9 @@ func (q *queue) Schedule(headers []*types.Header, from uint64) []*types.Header {
}
if q.mode == FastSync && header.Number.Uint64() == q.fastSyncPivot {
// Pivoting point of the fast sync, retrieve the state tries
+ q.stateSchedLock.Lock()
q.stateScheduler = state.NewStateSync(header.Root, q.stateDatabase)
- for _, hash := range q.stateScheduler.Missing(0) {
- q.stateTaskPool[hash] = q.stateTaskIndex
- q.stateTaskQueue.Push(hash, -float32(q.stateTaskIndex))
- q.stateTaskIndex++
- }
+ q.stateSchedLock.Unlock()
}
inserts = append(inserts, header)
q.headerHead = hash
@@ -325,8 +353,13 @@ func (q *queue) GetHeadResult() *fetchResult {
if q.resultCache[0].Pending > 0 {
return nil
}
- if q.mode == FastSync && q.resultCache[0].Header.Number.Uint64() == q.fastSyncPivot && len(q.stateTaskPool) > 0 {
- return nil
+ if q.mode == FastSync && q.resultCache[0].Header.Number.Uint64() == q.fastSyncPivot {
+ if len(q.stateTaskPool) > 0 {
+ return nil
+ }
+ if q.PendingNodeData() > 0 {
+ return nil
+ }
}
return q.resultCache[0]
}
@@ -345,8 +378,13 @@ func (q *queue) TakeResults() []*fetchResult {
break
}
// The fast sync pivot block may only be processed after state fetch completes
- if q.mode == FastSync && result.Header.Number.Uint64() == q.fastSyncPivot && len(q.stateTaskPool) > 0 {
- break
+ if q.mode == FastSync && result.Header.Number.Uint64() == q.fastSyncPivot {
+ if len(q.stateTaskPool) > 0 {
+ break
+ }
+ if q.PendingNodeData() > 0 {
+ break
+ }
}
// If we've just inserted the fast sync pivot, stop as the following batch needs different insertion
if q.mode == FastSync && result.Header.Number.Uint64() == q.fastSyncPivot+1 && len(results) > 0 {
@@ -373,26 +411,34 @@ func (q *queue) TakeResults() []*fetchResult {
// ReserveBlocks reserves a set of block hashes for the given peer, skipping any
// previously failed download.
func (q *queue) ReserveBlocks(p *peer, count int) *fetchRequest {
- return q.reserveHashes(p, count, q.hashQueue, q.blockPendPool, len(q.resultCache)-len(q.blockDonePool))
+ return q.reserveHashes(p, count, q.hashQueue, nil, q.blockPendPool, len(q.resultCache)-len(q.blockDonePool))
}
// ReserveNodeData reserves a set of node data hashes for the given peer, skipping
// any previously failed download.
func (q *queue) ReserveNodeData(p *peer, count int) *fetchRequest {
- return q.reserveHashes(p, count, q.stateTaskQueue, q.statePendPool, 0)
+ // Create a task generator to fetch status-fetch tasks if all schedules ones are done
+ generator := func(max int) {
+ q.stateSchedLock.Lock()
+ defer q.stateSchedLock.Unlock()
+
+ for _, hash := range q.stateScheduler.Missing(max) {
+ q.stateTaskPool[hash] = q.stateTaskIndex
+ q.stateTaskQueue.Push(hash, -float32(q.stateTaskIndex))
+ q.stateTaskIndex++
+ }
+ }
+ return q.reserveHashes(p, count, q.stateTaskQueue, generator, q.statePendPool, count)
}
// reserveHashes reserves a set of hashes for the given peer, skipping previously
// failed ones.
-func (q *queue) reserveHashes(p *peer, count int, taskQueue *prque.Prque, pendPool map[string]*fetchRequest, maxPending int) *fetchRequest {
+func (q *queue) reserveHashes(p *peer, count int, taskQueue *prque.Prque, taskGen func(int), pendPool map[string]*fetchRequest, maxPending int) *fetchRequest {
q.lock.Lock()
defer q.lock.Unlock()
- // Short circuit if the pool has been depleted, or if the peer's already
- // downloading something (sanity check not to corrupt state)
- if taskQueue.Empty() {
- return nil
- }
+ // Short circuit if the peer's already downloading something (sanity check not
+ // to corrupt state)
if _, ok := pendPool[p.id]; ok {
return nil
}
@@ -403,6 +449,13 @@ func (q *queue) reserveHashes(p *peer, count int, taskQueue *prque.Prque, pendPo
allowance -= len(request.Hashes)
}
}
+ // If there's a task generator, ask it to fill our task queue
+ if taskGen != nil && taskQueue.Size() < allowance {
+ taskGen(allowance - taskQueue.Size())
+ }
+ if taskQueue.Empty() {
+ return nil
+ }
// Retrieve a batch of hashes, skipping previously failed ones
send := make(map[common.Hash]int)
skip := make(map[common.Hash]int)
@@ -809,14 +862,14 @@ func (q *queue) deliver(id string, taskPool map[common.Hash]*types.Header, taskQ
}
// DeliverNodeData injects a node state data retrieval response into the queue.
-func (q *queue) DeliverNodeData(id string, data [][]byte) (int, int, error) {
+func (q *queue) DeliverNodeData(id string, data [][]byte, callback func(error, int)) error {
q.lock.Lock()
defer q.lock.Unlock()
// Short circuit if the data was never requested
request := q.statePendPool[id]
if request == nil {
- return 0, 0, errNoFetchesPending
+ return errNoFetchesPending
}
stateReqTimer.UpdateSince(request.Time)
delete(q.statePendPool, id)
@@ -829,7 +882,7 @@ func (q *queue) DeliverNodeData(id string, data [][]byte) (int, int, error) {
}
// Iterate over the downloaded data and verify each of them
errs := make([]error, 0)
- processed := 0
+ process := []trie.SyncResult{}
for _, blob := range data {
// Skip any blocks that were not requested
hash := common.BytesToHash(crypto.Sha3(blob))
@@ -837,41 +890,58 @@ func (q *queue) DeliverNodeData(id string, data [][]byte) (int, int, error) {
errs = append(errs, fmt.Errorf("non-requested state data %x", hash))
continue
}
- // Inject the next state trie item into the database
- if err := q.stateScheduler.Process([]trie.SyncResult{{hash, blob}}); err != nil {
- errs = []error{err}
- break
- }
- processed++
+ // Inject the next state trie item into the processing queue
+ process = append(process, trie.SyncResult{hash, blob})
delete(request.Hashes, hash)
delete(q.stateTaskPool, hash)
}
+ // Start the asynchronous node state data injection
+ atomic.AddInt32(&q.stateProcessors, 1)
+ go func() {
+ defer atomic.AddInt32(&q.stateProcessors, -1)
+ q.deliverNodeData(process, callback)
+ }()
// Return all failed or missing fetches to the queue
for hash, index := range request.Hashes {
q.stateTaskQueue.Push(hash, float32(index))
}
- // Also enqueue any newly required state trie nodes
- discovered := 0
- if len(q.stateTaskPool) < maxQueuedStates {
- for _, hash := range q.stateScheduler.Missing(4 * MaxStateFetch) {
- q.stateTaskPool[hash] = q.stateTaskIndex
- q.stateTaskQueue.Push(hash, -float32(q.stateTaskIndex))
- q.stateTaskIndex++
- discovered++
- }
- }
// If none of the data items were good, it's a stale delivery
switch {
case len(errs) == 0:
- return processed, discovered, nil
+ return nil
case len(errs) == len(request.Hashes):
- return processed, discovered, errStaleDelivery
+ return errStaleDelivery
default:
- return processed, discovered, fmt.Errorf("multiple failures: %v", errs)
+ return fmt.Errorf("multiple failures: %v", errs)
+ }
+}
+
+// deliverNodeData is the asynchronous node data processor that injects a batch
+// of sync results into the state scheduler.
+func (q *queue) deliverNodeData(results []trie.SyncResult, callback func(error, int)) {
+ // Process results one by one to permit task fetches in between
+ for i, result := range results {
+ q.stateSchedLock.Lock()
+
+ if q.stateScheduler == nil {
+ // Syncing aborted since this async delivery started, bail out
+ q.stateSchedLock.Unlock()
+ callback(errNoFetchesPending, i)
+ return
+ }
+ if _, err := q.stateScheduler.Process([]trie.SyncResult{result}); err != nil {
+ // Processing a state result failed, bail out
+ q.stateSchedLock.Unlock()
+ callback(err, i)
+ return
+ }
+ // Item processing succeeded, release the lock (temporarily)
+ q.stateSchedLock.Unlock()
}
+ callback(nil, len(results))
}
// Prepare configures the result cache to allow accepting and caching inbound
generated by cgit (git 2.34.1) at 2024-11-15 11:23:36 +0800