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eth/downloader: refactor downloader + queue (#21263)

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* eth/downloader: refactor downloader + queue

downloader, fetcher: throttle-metrics, fetcher filter improvements, standalone resultcache

downloader: more accurate deliverytime calculation, less mem overhead in state requests

downloader/queue: increase underlying buffer of results, new throttle mechanism

eth/downloader: updates to tests

eth/downloader: fix up some review concerns

eth/downloader/queue: minor fixes

eth/downloader: minor fixes after review call

eth/downloader: testcases for queue.go

eth/downloader: minor change, don't set progress unless progress...

eth/downloader: fix flaw which prevented useless peers from being dropped

eth/downloader: try to fix tests

eth/downloader: verify non-deliveries against advertised remote head

eth/downloader: fix flaw with checking closed-status causing hang

eth/downloader: hashing avoidance

eth/downloader: review concerns + simplify resultcache and queue

eth/downloader: add back some locks, address review concerns

downloader/queue: fix remaining lock flaw

* eth/downloader: nitpick fixes

* eth/downloader: remove the *2*3/4 throttling threshold dance

* eth/downloader: print correct throttle threshold in stats

Co-authored-by: Péter Szilágyi <peterke@gmail.com>
This commit is contained in:
Martin Holst Swende
2020-07-24 09:46:26 +02:00
committed by GitHub
parent 3a57eecc69
commit 105922180f
11 changed files with 1110 additions and 355 deletions
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11
core/types/block.go
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@ -147,6 +147,17 @@ func rlpHash(x interface{}) (h common.Hash) {
return h
}
// EmptyBody returns true if there is no additional 'body' to complete the header
// that is: no transactions and no uncles.
func (h *Header) EmptyBody() bool {
return h.TxHash == EmptyRootHash && h.UncleHash == EmptyUncleHash
}
// EmptyReceipts returns true if there are no receipts for this header/block.
func (h *Header) EmptyReceipts() bool {
return h.ReceiptHash == EmptyRootHash
}
// Body is a simple (mutable, non-safe) data container for storing and moving
// a block's data contents (transactions and uncles) together.
type Body struct {