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routing/chainview/neutrino: cache filter entries

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This commit alters the neutrino chainview such that it
caches the filter entries corresponding to watched
outpoints at the moment they are added to the filter.
Previously, we would rederive each filter entry when
reconstructing the relevant filter entries, which
would lead to unnecessary work on the gc. Now, each is
created at most once, and reused across subsequent
reconstructions.
This commit is contained in:
Conner Fromknecht 2018-05-08 20:42:06 -07:00
parent ddcbb40898
commit 1b1f5f197a
No known key found for this signature in database
GPG key ID: 39DE78FBE6ACB0EF
1 changed files with 5 additions and 6 deletions
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11
routing/chainview/neutrino.go
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@ -42,7 +42,7 @@ type CfFilteredChainView struct {
// chainFilter is the // chainFilter is the
filterMtx sync.RWMutex filterMtx sync.RWMutex
chainFilter map[wire.OutPoint]struct{} chainFilter map[wire.OutPoint][]byte
quit chan struct{} quit chan struct{}
wg sync.WaitGroup wg sync.WaitGroup
@ -62,7 +62,7 @@ func NewCfFilteredChainView(node *neutrino.ChainService) (*CfFilteredChainView,
blockQueue: newBlockEventQueue(), blockQueue: newBlockEventQueue(),
quit: make(chan struct{}), quit: make(chan struct{}),
rescanErrChan: make(chan error), rescanErrChan: make(chan error),
chainFilter: make(map[wire.OutPoint]struct{}), chainFilter: make(map[wire.OutPoint][]byte),
p2pNode: node, p2pNode: node,
}, nil }, nil
} }
@ -250,9 +250,8 @@ func (c *CfFilteredChainView) FilterBlock(blockHash *chainhash.Hash) (*FilteredB
// filters. // filters.
c.filterMtx.RLock() c.filterMtx.RLock()
relevantPoints := make([][]byte, 0, len(c.chainFilter)) relevantPoints := make([][]byte, 0, len(c.chainFilter))
for op := range c.chainFilter { for _, filterEntry := range c.chainFilter {
opBytes := builder.OutPointToFilterEntry(op) relevantPoints = append(relevantPoints, filterEntry)
relevantPoints = append(relevantPoints, opBytes)
} }
c.filterMtx.RUnlock() c.filterMtx.RUnlock()
@ -324,7 +323,7 @@ func (c *CfFilteredChainView) UpdateFilter(ops []wire.OutPoint,
// UTXO's, ignoring duplicates in the process. // UTXO's, ignoring duplicates in the process.
c.filterMtx.Lock() c.filterMtx.Lock()
for _, op := range ops { for _, op := range ops {
c.chainFilter[op] = struct{}{} c.chainFilter[op] = builder.OutPointToFilterEntry(op)
} }
c.filterMtx.Unlock() c.filterMtx.Unlock()