60 lines
1.2 KiB
Go
60 lines
1.2 KiB
Go
package blobovnicza
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import (
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"encoding/binary"
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"fmt"
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"math"
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"math/bits"
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"strconv"
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)
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const firstBucketBound = uint64(32 * 1 << 10) // 32KB
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func stringifyBounds(lower, upper uint64) string {
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return fmt.Sprintf("[%s:%s]",
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stringifyByteSize(lower),
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stringifyByteSize(upper),
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)
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}
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func stringifyByteSize(sz uint64) string {
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return strconv.FormatUint(sz, 10)
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}
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func bucketKeyFromBounds(upperBound uint64) []byte {
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buf := make([]byte, binary.MaxVarintLen64)
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ln := binary.PutUvarint(buf, upperBound)
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return buf[:ln]
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}
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func bucketForSize(sz uint64) []byte {
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return bucketKeyFromBounds(upperPowerOfTwo(sz))
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}
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func upperPowerOfTwo(v uint64) uint64 {
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if v <= firstBucketBound {
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return firstBucketBound
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}
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return 1 << bits.Len64(v-1)
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}
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func (b *Blobovnicza) itemAdded(itemSize uint64) {
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b.dataSize.Add(itemSize)
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b.itemsCount.Add(1)
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b.metrics.AddOpenBlobovniczaSize(itemSize)
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b.metrics.AddOpenBlobovniczaItems(1)
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}
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func (b *Blobovnicza) itemDeleted(itemSize uint64) {
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b.dataSize.Add(^(itemSize - 1))
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b.itemsCount.Add(math.MaxUint64)
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b.metrics.SubOpenBlobovniczaSize(itemSize)
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b.metrics.SubOpenBlobovniczaItems(1)
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}
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func (b *Blobovnicza) IsFull() bool {
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return b.dataSize.Load() >= b.fullSizeLimit
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}
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