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core/rawdb: update comment

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This commit is contained in:
Felix Lange 2025-03-14 12:58:35 +01:00
parent 7824a0c56f
commit d9e3ce8aed
1 changed files with 8 additions and 7 deletions
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15
core/rawdb/freezer.go
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@ -301,9 +301,10 @@ func (f *Freezer) TruncateHead(items uint64) (uint64, error) {
return oitems, nil return oitems, nil
} }
// TruncateTailBlocks discards any recent data below the provided threshold number. // TruncateTailBlocks discards all data below the provided threshold block number.
// Only truncates blocks and receipts. // This is intended to be used with the chain freezer. Unlike TruncateTail, it
func (f *Freezer) TruncateTailBlocks(tail uint64) (uint64, error) { // only truncates blocks and receipts, leaving the header table where it is.
func (f *Freezer) TruncateTailBlocks(tailBlock uint64) (uint64, error) {
if f.readonly { if f.readonly {
return 0, errReadOnly return 0, errReadOnly
} }
@ -311,21 +312,21 @@ func (f *Freezer) TruncateTailBlocks(tail uint64) (uint64, error) {
defer f.writeLock.Unlock() defer f.writeLock.Unlock()
old := f.tail.Load() old := f.tail.Load()
if old >= tail { if old >= tailBlock {
return old, nil return old, nil
} }
for kind, table := range f.tables { for kind, table := range f.tables {
if kind == ChainFreezerBodiesTable || kind == ChainFreezerReceiptTable { if kind == ChainFreezerBodiesTable || kind == ChainFreezerReceiptTable {
if err := table.truncateTail(tail); err != nil { if err := table.truncateTail(tailBlock); err != nil {
return 0, err return 0, err
} }
} }
} }
f.tail.Store(tail) f.tail.Store(tailBlock)
return old, nil return old, nil
} }
// TruncateTail discards any recent data below the provided threshold number. // TruncateTail discards all data below the provided threshold number.
func (f *Freezer) TruncateTail(tail uint64) (uint64, error) { func (f *Freezer) TruncateTail(tail uint64) (uint64, error) {
if f.readonly { if f.readonly {
return 0, errReadOnly return 0, errReadOnly