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core: reset txpool on sethead #26392 (#1373)

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Daniel Liu 2025-08-22 16:45:41 +08:00 committed by GitHub
parent cf6c595dd0
commit 144fbbf35a
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1 changed files with 18 additions and 4 deletions
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22
core/blockchain.go
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@ -436,11 +436,25 @@ func (bc *BlockChain) loadLastState() error {
return nil
}
// SetHead rewinds the local chain to a new head. In the case of headers, everything
// above the new head will be deleted and the new one set. In the case of blocks
// though, the head may be further rewound if block bodies are missing (non-archive
// nodes after a fast sync).
// SetHead rewinds the local chain to a new head. Depending on whether the node
// was fast synced or full synced and in which state, the method will try to
// delete minimal data from disk whilst retaining chain consistency.
func (bc *BlockChain) SetHead(head uint64) error {
if err := bc.setHeadBeyondRoot(head); err != nil {
return err
}
// Send chain head event to update the transaction pool
bc.chainHeadFeed.Send(ChainHeadEvent{Block: bc.CurrentBlock()})
return nil
}
// setHeadBeyondRoot rewinds the local chain to a new head with the extra condition
// that the rewind must pass the specified state root. This method is meant to be
// used when rewinding with snapshots enabled to ensure that we go back further than
// persistent disk layer. Depending on whether the node was fast synced or full, and
// in which state, the method will try to delete minimal data from disk whilst
// retaining chain consistency.
func (bc *BlockChain) setHeadBeyondRoot(head uint64) error {
if !bc.chainmu.TryLock() {
return errChainStopped
}