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triedb/pathdb: cache slice pointer

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This commit is contained in:
Gary Rong 2024-12-03 11:09:21 +08:00
parent a26b05bdff
commit 6c04ae0b20
1 changed files with 7 additions and 4 deletions
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11
triedb/pathdb/lookup.go
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@ -27,23 +27,26 @@ import (
// slicePool is a shared pool of hash slice, for reducing the GC pressure. // slicePool is a shared pool of hash slice, for reducing the GC pressure.
var slicePool = sync.Pool{ var slicePool = sync.Pool{
New: func() interface{} { New: func() interface{} {
return make([]common.Hash, 0, 64) // Pre-allocate a slice with a reasonable capacity. slice := make([]common.Hash, 0, 16) // Pre-allocate a slice with a reasonable capacity.
return &slice
}, },
} }
// getSlice obtains the hash slice from the shared pool. // getSlice obtains the hash slice from the shared pool.
func getSlice() []common.Hash { func getSlice() []common.Hash {
return slicePool.Get().([]common.Hash) slice := *slicePool.Get().(*[]common.Hash)
slice = slice[:0]
return slice
} }
// returnSlice returns the hash slice back to the shared pool for following usage. // returnSlice returns the hash slice back to the shared pool for following usage.
func returnSlice(slice []common.Hash) { func returnSlice(slice []common.Hash) {
// Discard the large slice for recycling // Discard the large slice for recycling
if len(slice) > 1024 { if len(slice) > 128 {
return return
} }
// Reset the slice before putting it back into the pool // Reset the slice before putting it back into the pool
slicePool.Put(slice[:0]) slicePool.Put(&slice)
} }
// lookup is an internal help structure to quickly identify // lookup is an internal help structure to quickly identify