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https://gitlab.com/pulsechaincom/erigon-pulse.git
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12de9c3f65
* eth/downloaded: fixed datarace between synchronize and Progress There was a race condition between `downloader.synchronize()` and `Progress` `syncWithPeer` `fetchHeight` `findAncestors` and `processHeaders` This PR changes the behavior of the downloader a bit. Previously the functions `Progress` `syncWithPeer` `fetchHeight` `findAncestors` and `processHeaders` read the syncMode anew within their loops. Now they read the syncMode at the start of their function and don't change it during their runtime. * eth/downloaded: comment * eth/downloader: added comment # Conflicts: # eth/downloader/downloader.go
85 lines
2.4 KiB
Go
85 lines
2.4 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package downloader
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import "fmt"
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// SyncMode represents the synchronisation mode of the downloader.
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// It is a uint32 as it is used with atomic operations.
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type SyncMode uint32
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const (
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FullSync SyncMode = iota // Synchronise the entire blockchain history from full blocks
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StagedSync // Full sync but done in stages
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MgrSync // MarryGoRound sync
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// FIXME: these are kept for simplicity of rebasing
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FastSync // (not supported by turbo-geth)
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LightSync // (not supported by turbo-geth)
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)
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const (
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FullSyncName = "full"
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StagedSyncName = "staged"
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MgrSyncName = "mgr"
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)
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func (mode SyncMode) IsValid() bool {
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return mode == StagedSync || mode == FullSync // needed for some (turbo-geth/console) tests
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}
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// String implements the stringer interface.
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func (mode SyncMode) String() string {
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switch mode {
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case FullSync:
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return FullSyncName
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case StagedSync:
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return StagedSyncName
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case MgrSync:
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return MgrSyncName
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default:
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return "unknown"
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}
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}
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func (mode SyncMode) MarshalText() ([]byte, error) {
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switch mode {
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case FullSync:
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return []byte(FullSyncName), nil
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case StagedSync:
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return []byte(StagedSyncName), nil
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case MgrSync:
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return []byte(MgrSyncName), nil
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default:
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return nil, fmt.Errorf("unknown sync mode %d", mode)
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}
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}
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func (mode *SyncMode) UnmarshalText(text []byte) error {
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switch string(text) {
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case FullSyncName:
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*mode = FullSync
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case StagedSyncName:
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*mode = StagedSync
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case MgrSyncName:
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*mode = MgrSync
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default:
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return fmt.Errorf(`unknown sync mode %q, want one of %s`, text, []string{FullSyncName, StagedSyncName, MgrSyncName})
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}
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return nil
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}
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