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[#602] blobovnicza: Add leaf width implementation

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Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
This commit is contained in:
Dmitrii Stepanov 2023-08-18 09:08:26 +03:00
parent d3904ec599
commit 354a92ea2c
4 changed files with 26 additions and 5 deletions
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16
pkg/local_object_storage/blobstor/blobovniczatree/blobovnicza.go
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@ -98,6 +98,10 @@ func NewBlobovniczaTree(opts ...Option) (blz *Blobovniczas) {
opts[i](&blz.cfg)
}
if blz.blzLeafWidth == 0 {
blz.blzLeafWidth = blz.blzShallowWidth
}
cache, err := simplelru.NewLRU[string, *blobovnicza.Blobovnicza](blz.openedCacheSize, func(p string, value *blobovnicza.Blobovnicza) {
lvlPath := filepath.Dir(p)
if b, ok := blz.active[lvlPath]; ok && b.ind == u64FromHexString(filepath.Base(p)) {
@ -120,13 +124,17 @@ func NewBlobovniczaTree(opts ...Option) (blz *Blobovniczas) {
panic(fmt.Errorf("could not create LRU cache of size %d: %w", blz.openedCacheSize, err))
}
cp := uint64(1)
activeMapCapacity := uint64(1)
for i := uint64(0); i < blz.blzShallowDepth; i++ {
cp *= blz.blzShallowWidth
if i+1 == blz.blzShallowDepth {
activeMapCapacity *= blz.blzLeafWidth
} else {
activeMapCapacity *= blz.blzShallowWidth
}
}
blz.opened = cache
blz.active = make(map[string]blobovniczaWithIndex, cp)
blz.active = make(map[string]blobovniczaWithIndex, activeMapCapacity)
return blz
}
@ -161,7 +169,7 @@ func (b *Blobovniczas) updateAndGet(lvlPath string, old *uint64) (blobovniczaWit
if ok {
if old != nil {
if active.ind == b.blzShallowWidth-1 {
if active.ind == b.blzLeafWidth-1 {
return active, logicerr.New("no more Blobovniczas")
} else if active.ind != *old {
// sort of CAS in order to control concurrent