[chore] update bun libraries to v1.2.5 (#3528)

* update bun libraries to v1.2.5 * pin old v1.29.0 of otel
2025-11-01 17:42:25 -05:00 · 2024-11-08 13:51:23 +00:00 · 2024-11-08 13:51:23 +00:00 · 29007b1b88
commit 29007b1b88
parent 45e1609377
59 changed files with 4181 additions and 1196 deletions
--- a/vendor/github.com/puzpuzpuz/xsync/v3/mapof.go
+++ b/vendor/github.com/puzpuzpuz/xsync/v3/mapof.go
@ -0,0 +1,694 @@
+package xsync
+
+import (
+	"fmt"
+	"math"
+	"sync"
+	"sync/atomic"
+	"unsafe"
+)
+
+const (
+	// number of MapOf entries per bucket; 5 entries lead to size of 64B
+	// (one cache line) on 64-bit machines
+	entriesPerMapOfBucket        = 5
+	defaultMeta           uint64 = 0x8080808080808080
+	metaMask              uint64 = 0xffffffffff
+	defaultMetaMasked     uint64 = defaultMeta & metaMask
+	emptyMetaSlot         uint8  = 0x80
+)
+
+// MapOf is like a Go map[K]V but is safe for concurrent
+// use by multiple goroutines without additional locking or
+// coordination. It follows the interface of sync.Map with
+// a number of valuable extensions like Compute or Size.
+//
+// A MapOf must not be copied after first use.
+//
+// MapOf uses a modified version of Cache-Line Hash Table (CLHT)
+// data structure: https://github.com/LPD-EPFL/CLHT
+//
+// CLHT is built around idea to organize the hash table in
+// cache-line-sized buckets, so that on all modern CPUs update
+// operations complete with at most one cache-line transfer.
+// Also, Get operations involve no write to memory, as well as no
+// mutexes or any other sort of locks. Due to this design, in all
+// considered scenarios MapOf outperforms sync.Map.
+//
+// MapOf also borrows ideas from Java's j.u.c.ConcurrentHashMap
+// (immutable K/V pair structs instead of atomic snapshots)
+// and C++'s absl::flat_hash_map (meta memory and SWAR-based
+// lookups).
+type MapOf[K comparable, V any] struct {
+	totalGrowths int64
+	totalShrinks int64
+	resizing     int64          // resize in progress flag; updated atomically
+	resizeMu     sync.Mutex     // only used along with resizeCond
+	resizeCond   sync.Cond      // used to wake up resize waiters (concurrent modifications)
+	table        unsafe.Pointer // *mapOfTable
+	hasher       func(K, uint64) uint64
+	minTableLen  int
+	growOnly     bool
+}
+
+type mapOfTable[K comparable, V any] struct {
+	buckets []bucketOfPadded
+	// striped counter for number of table entries;
+	// used to determine if a table shrinking is needed
+	// occupies min(buckets_memory/1024, 64KB) of memory
+	size []counterStripe
+	seed uint64
+}
+
+// bucketOfPadded is a CL-sized map bucket holding up to
+// entriesPerMapOfBucket entries.
+type bucketOfPadded struct {
+	//lint:ignore U1000 ensure each bucket takes two cache lines on both 32 and 64-bit archs
+	pad [cacheLineSize - unsafe.Sizeof(bucketOf{})]byte
+	bucketOf
+}
+
+type bucketOf struct {
+	meta    uint64
+	entries [entriesPerMapOfBucket]unsafe.Pointer // *entryOf
+	next    unsafe.Pointer                        // *bucketOfPadded
+	mu      sync.Mutex
+}
+
+// entryOf is an immutable map entry.
+type entryOf[K comparable, V any] struct {
+	key   K
+	value V
+}
+
+// NewMapOf creates a new MapOf instance configured with the given
+// options.
+func NewMapOf[K comparable, V any](options ...func(*MapConfig)) *MapOf[K, V] {
+	return NewMapOfWithHasher[K, V](defaultHasher[K](), options...)
+}
+
+// NewMapOfWithHasher creates a new MapOf instance configured with
+// the given hasher and options. The hash function is used instead
+// of the built-in hash function configured when a map is created
+// with the NewMapOf function.
+func NewMapOfWithHasher[K comparable, V any](
+	hasher func(K, uint64) uint64,
+	options ...func(*MapConfig),
+) *MapOf[K, V] {
+	c := &MapConfig{
+		sizeHint: defaultMinMapTableLen * entriesPerMapOfBucket,
+	}
+	for _, o := range options {
+		o(c)
+	}
+
+	m := &MapOf[K, V]{}
+	m.resizeCond = *sync.NewCond(&m.resizeMu)
+	m.hasher = hasher
+	var table *mapOfTable[K, V]
+	if c.sizeHint <= defaultMinMapTableLen*entriesPerMapOfBucket {
+		table = newMapOfTable[K, V](defaultMinMapTableLen)
+	} else {
+		tableLen := nextPowOf2(uint32((float64(c.sizeHint) / entriesPerMapOfBucket) / mapLoadFactor))
+		table = newMapOfTable[K, V](int(tableLen))
+	}
+	m.minTableLen = len(table.buckets)
+	m.growOnly = c.growOnly
+	atomic.StorePointer(&m.table, unsafe.Pointer(table))
+	return m
+}
+
+// NewMapOfPresized creates a new MapOf instance with capacity enough
+// to hold sizeHint entries. The capacity is treated as the minimal capacity
+// meaning that the underlying hash table will never shrink to
+// a smaller capacity. If sizeHint is zero or negative, the value
+// is ignored.
+//
+// Deprecated: use NewMapOf in combination with WithPresize.
+func NewMapOfPresized[K comparable, V any](sizeHint int) *MapOf[K, V] {
+	return NewMapOf[K, V](WithPresize(sizeHint))
+}
+
+func newMapOfTable[K comparable, V any](minTableLen int) *mapOfTable[K, V] {
+	buckets := make([]bucketOfPadded, minTableLen)
+	for i := range buckets {
+		buckets[i].meta = defaultMeta
+	}
+	counterLen := minTableLen >> 10
+	if counterLen < minMapCounterLen {
+		counterLen = minMapCounterLen
+	} else if counterLen > maxMapCounterLen {
+		counterLen = maxMapCounterLen
+	}
+	counter := make([]counterStripe, counterLen)
+	t := &mapOfTable[K, V]{
+		buckets: buckets,
+		size:    counter,
+		seed:    makeSeed(),
+	}
+	return t
+}
+
+// Load returns the value stored in the map for a key, or zero value
+// of type V if no value is present.
+// The ok result indicates whether value was found in the map.
+func (m *MapOf[K, V]) Load(key K) (value V, ok bool) {
+	table := (*mapOfTable[K, V])(atomic.LoadPointer(&m.table))
+	hash := m.hasher(key, table.seed)
+	h1 := h1(hash)
+	h2w := broadcast(h2(hash))
+	bidx := uint64(len(table.buckets)-1) & h1
+	b := &table.buckets[bidx]
+	for {
+		metaw := atomic.LoadUint64(&b.meta)
+		markedw := markZeroBytes(metaw^h2w) & metaMask
+		for markedw != 0 {
+			idx := firstMarkedByteIndex(markedw)
+			eptr := atomic.LoadPointer(&b.entries[idx])
+			if eptr != nil {
+				e := (*entryOf[K, V])(eptr)
+				if e.key == key {
+					return e.value, true
+				}
+			}
+			markedw &= markedw - 1
+		}
+		bptr := atomic.LoadPointer(&b.next)
+		if bptr == nil {
+			return
+		}
+		b = (*bucketOfPadded)(bptr)
+	}
+}
+
+// Store sets the value for a key.
+func (m *MapOf[K, V]) Store(key K, value V) {
+	m.doCompute(
+		key,
+		func(V, bool) (V, bool) {
+			return value, false
+		},
+		false,
+		false,
+	)
+}
+
+// LoadOrStore returns the existing value for the key if present.
+// Otherwise, it stores and returns the given value.
+// The loaded result is true if the value was loaded, false if stored.
+func (m *MapOf[K, V]) LoadOrStore(key K, value V) (actual V, loaded bool) {
+	return m.doCompute(
+		key,
+		func(V, bool) (V, bool) {
+			return value, false
+		},
+		true,
+		false,
+	)
+}
+
+// LoadAndStore returns the existing value for the key if present,
+// while setting the new value for the key.
+// It stores the new value and returns the existing one, if present.
+// The loaded result is true if the existing value was loaded,
+// false otherwise.
+func (m *MapOf[K, V]) LoadAndStore(key K, value V) (actual V, loaded bool) {
+	return m.doCompute(
+		key,
+		func(V, bool) (V, bool) {
+			return value, false
+		},
+		false,
+		false,
+	)
+}
+
+// LoadOrCompute returns the existing value for the key if present.
+// Otherwise, it computes the value using the provided function and
+// returns the computed value. The loaded result is true if the value
+// was loaded, false if stored.
+//
+// This call locks a hash table bucket while the compute function
+// is executed. It means that modifications on other entries in
+// the bucket will be blocked until the valueFn executes. Consider
+// this when the function includes long-running operations.
+func (m *MapOf[K, V]) LoadOrCompute(key K, valueFn func() V) (actual V, loaded bool) {
+	return m.doCompute(
+		key,
+		func(V, bool) (V, bool) {
+			return valueFn(), false
+		},
+		true,
+		false,
+	)
+}
+
+// Compute either sets the computed new value for the key or deletes
+// the value for the key. When the delete result of the valueFn function
+// is set to true, the value will be deleted, if it exists. When delete
+// is set to false, the value is updated to the newValue.
+// The ok result indicates whether value was computed and stored, thus, is
+// present in the map. The actual result contains the new value in cases where
+// the value was computed and stored. See the example for a few use cases.
+//
+// This call locks a hash table bucket while the compute function
+// is executed. It means that modifications on other entries in
+// the bucket will be blocked until the valueFn executes. Consider
+// this when the function includes long-running operations.
+func (m *MapOf[K, V]) Compute(
+	key K,
+	valueFn func(oldValue V, loaded bool) (newValue V, delete bool),
+) (actual V, ok bool) {
+	return m.doCompute(key, valueFn, false, true)
+}
+
+// LoadAndDelete deletes the value for a key, returning the previous
+// value if any. The loaded result reports whether the key was
+// present.
+func (m *MapOf[K, V]) LoadAndDelete(key K) (value V, loaded bool) {
+	return m.doCompute(
+		key,
+		func(value V, loaded bool) (V, bool) {
+			return value, true
+		},
+		false,
+		false,
+	)
+}
+
+// Delete deletes the value for a key.
+func (m *MapOf[K, V]) Delete(key K) {
+	m.doCompute(
+		key,
+		func(value V, loaded bool) (V, bool) {
+			return value, true
+		},
+		false,
+		false,
+	)
+}
+
+func (m *MapOf[K, V]) doCompute(
+	key K,
+	valueFn func(oldValue V, loaded bool) (V, bool),
+	loadIfExists, computeOnly bool,
+) (V, bool) {
+	// Read-only path.
+	if loadIfExists {
+		if v, ok := m.Load(key); ok {
+			return v, !computeOnly
+		}
+	}
+	// Write path.
+	for {
+	compute_attempt:
+		var (
+			emptyb   *bucketOfPadded
+			emptyidx int
+		)
+		table := (*mapOfTable[K, V])(atomic.LoadPointer(&m.table))
+		tableLen := len(table.buckets)
+		hash := m.hasher(key, table.seed)
+		h1 := h1(hash)
+		h2 := h2(hash)
+		h2w := broadcast(h2)
+		bidx := uint64(len(table.buckets)-1) & h1
+		rootb := &table.buckets[bidx]
+		rootb.mu.Lock()
+		// The following two checks must go in reverse to what's
+		// in the resize method.
+		if m.resizeInProgress() {
+			// Resize is in progress. Wait, then go for another attempt.
+			rootb.mu.Unlock()
+			m.waitForResize()
+			goto compute_attempt
+		}
+		if m.newerTableExists(table) {
+			// Someone resized the table. Go for another attempt.
+			rootb.mu.Unlock()
+			goto compute_attempt
+		}
+		b := rootb
+		for {
+			metaw := b.meta
+			markedw := markZeroBytes(metaw^h2w) & metaMask
+			for markedw != 0 {
+				idx := firstMarkedByteIndex(markedw)
+				eptr := b.entries[idx]
+				if eptr != nil {
+					e := (*entryOf[K, V])(eptr)
+					if e.key == key {
+						if loadIfExists {
+							rootb.mu.Unlock()
+							return e.value, !computeOnly
+						}
+						// In-place update/delete.
+						// We get a copy of the value via an interface{} on each call,
+						// thus the live value pointers are unique. Otherwise atomic
+						// snapshot won't be correct in case of multiple Store calls
+						// using the same value.
+						oldv := e.value
+						newv, del := valueFn(oldv, true)
+						if del {
+							// Deletion.
+							// First we update the hash, then the entry.
+							newmetaw := setByte(metaw, emptyMetaSlot, idx)
+							atomic.StoreUint64(&b.meta, newmetaw)
+							atomic.StorePointer(&b.entries[idx], nil)
+							rootb.mu.Unlock()
+							table.addSize(bidx, -1)
+							// Might need to shrink the table if we left bucket empty.
+							if newmetaw == defaultMeta {
+								m.resize(table, mapShrinkHint)
+							}
+							return oldv, !computeOnly
+						}
+						newe := new(entryOf[K, V])
+						newe.key = key
+						newe.value = newv
+						atomic.StorePointer(&b.entries[idx], unsafe.Pointer(newe))
+						rootb.mu.Unlock()
+						if computeOnly {
+							// Compute expects the new value to be returned.
+							return newv, true
+						}
+						// LoadAndStore expects the old value to be returned.
+						return oldv, true
+					}
+				}
+				markedw &= markedw - 1
+			}
+			if emptyb == nil {
+				// Search for empty entries (up to 5 per bucket).
+				emptyw := metaw & defaultMetaMasked
+				if emptyw != 0 {
+					idx := firstMarkedByteIndex(emptyw)
+					emptyb = b
+					emptyidx = idx
+				}
+			}
+			if b.next == nil {
+				if emptyb != nil {
+					// Insertion into an existing bucket.
+					var zeroedV V
+					newValue, del := valueFn(zeroedV, false)
+					if del {
+						rootb.mu.Unlock()
+						return zeroedV, false
+					}
+					newe := new(entryOf[K, V])
+					newe.key = key
+					newe.value = newValue
+					// First we update meta, then the entry.
+					atomic.StoreUint64(&emptyb.meta, setByte(emptyb.meta, h2, emptyidx))
+					atomic.StorePointer(&emptyb.entries[emptyidx], unsafe.Pointer(newe))
+					rootb.mu.Unlock()
+					table.addSize(bidx, 1)
+					return newValue, computeOnly
+				}
+				growThreshold := float64(tableLen) * entriesPerMapOfBucket * mapLoadFactor
+				if table.sumSize() > int64(growThreshold) {
+					// Need to grow the table. Then go for another attempt.
+					rootb.mu.Unlock()
+					m.resize(table, mapGrowHint)
+					goto compute_attempt
+				}
+				// Insertion into a new bucket.
+				var zeroedV V
+				newValue, del := valueFn(zeroedV, false)
+				if del {
+					rootb.mu.Unlock()
+					return newValue, false
+				}
+				// Create and append a bucket.
+				newb := new(bucketOfPadded)
+				newb.meta = setByte(defaultMeta, h2, 0)
+				newe := new(entryOf[K, V])
+				newe.key = key
+				newe.value = newValue
+				newb.entries[0] = unsafe.Pointer(newe)
+				atomic.StorePointer(&b.next, unsafe.Pointer(newb))
+				rootb.mu.Unlock()
+				table.addSize(bidx, 1)
+				return newValue, computeOnly
+			}
+			b = (*bucketOfPadded)(b.next)
+		}
+	}
+}
+
+func (m *MapOf[K, V]) newerTableExists(table *mapOfTable[K, V]) bool {
+	curTablePtr := atomic.LoadPointer(&m.table)
+	return uintptr(curTablePtr) != uintptr(unsafe.Pointer(table))
+}
+
+func (m *MapOf[K, V]) resizeInProgress() bool {
+	return atomic.LoadInt64(&m.resizing) == 1
+}
+
+func (m *MapOf[K, V]) waitForResize() {
+	m.resizeMu.Lock()
+	for m.resizeInProgress() {
+		m.resizeCond.Wait()
+	}
+	m.resizeMu.Unlock()
+}
+
+func (m *MapOf[K, V]) resize(knownTable *mapOfTable[K, V], hint mapResizeHint) {
+	knownTableLen := len(knownTable.buckets)
+	// Fast path for shrink attempts.
+	if hint == mapShrinkHint {
+		if m.growOnly ||
+			m.minTableLen == knownTableLen ||
+			knownTable.sumSize() > int64((knownTableLen*entriesPerMapOfBucket)/mapShrinkFraction) {
+			return
+		}
+	}
+	// Slow path.
+	if !atomic.CompareAndSwapInt64(&m.resizing, 0, 1) {
+		// Someone else started resize. Wait for it to finish.
+		m.waitForResize()
+		return
+	}
+	var newTable *mapOfTable[K, V]
+	table := (*mapOfTable[K, V])(atomic.LoadPointer(&m.table))
+	tableLen := len(table.buckets)
+	switch hint {
+	case mapGrowHint:
+		// Grow the table with factor of 2.
+		atomic.AddInt64(&m.totalGrowths, 1)
+		newTable = newMapOfTable[K, V](tableLen << 1)
+	case mapShrinkHint:
+		shrinkThreshold := int64((tableLen * entriesPerMapOfBucket) / mapShrinkFraction)
+		if tableLen > m.minTableLen && table.sumSize() <= shrinkThreshold {
+			// Shrink the table with factor of 2.
+			atomic.AddInt64(&m.totalShrinks, 1)
+			newTable = newMapOfTable[K, V](tableLen >> 1)
+		} else {
+			// No need to shrink. Wake up all waiters and give up.
+			m.resizeMu.Lock()
+			atomic.StoreInt64(&m.resizing, 0)
+			m.resizeCond.Broadcast()
+			m.resizeMu.Unlock()
+			return
+		}
+	case mapClearHint:
+		newTable = newMapOfTable[K, V](m.minTableLen)
+	default:
+		panic(fmt.Sprintf("unexpected resize hint: %d", hint))
+	}
+	// Copy the data only if we're not clearing the map.
+	if hint != mapClearHint {
+		for i := 0; i < tableLen; i++ {
+			copied := copyBucketOf(&table.buckets[i], newTable, m.hasher)
+			newTable.addSizePlain(uint64(i), copied)
+		}
+	}
+	// Publish the new table and wake up all waiters.
+	atomic.StorePointer(&m.table, unsafe.Pointer(newTable))
+	m.resizeMu.Lock()
+	atomic.StoreInt64(&m.resizing, 0)
+	m.resizeCond.Broadcast()
+	m.resizeMu.Unlock()
+}
+
+func copyBucketOf[K comparable, V any](
+	b *bucketOfPadded,
+	destTable *mapOfTable[K, V],
+	hasher func(K, uint64) uint64,
+) (copied int) {
+	rootb := b
+	rootb.mu.Lock()
+	for {
+		for i := 0; i < entriesPerMapOfBucket; i++ {
+			if b.entries[i] != nil {
+				e := (*entryOf[K, V])(b.entries[i])
+				hash := hasher(e.key, destTable.seed)
+				bidx := uint64(len(destTable.buckets)-1) & h1(hash)
+				destb := &destTable.buckets[bidx]
+				appendToBucketOf(h2(hash), b.entries[i], destb)
+				copied++
+			}
+		}
+		if b.next == nil {
+			rootb.mu.Unlock()
+			return
+		}
+		b = (*bucketOfPadded)(b.next)
+	}
+}
+
+// Range calls f sequentially for each key and value present in the
+// map. If f returns false, range stops the iteration.
+//
+// Range does not necessarily correspond to any consistent snapshot
+// of the Map's contents: no key will be visited more than once, but
+// if the value for any key is stored or deleted concurrently, Range
+// may reflect any mapping for that key from any point during the
+// Range call.
+//
+// It is safe to modify the map while iterating it, including entry
+// creation, modification and deletion. However, the concurrent
+// modification rule apply, i.e. the changes may be not reflected
+// in the subsequently iterated entries.
+func (m *MapOf[K, V]) Range(f func(key K, value V) bool) {
+	var zeroPtr unsafe.Pointer
+	// Pre-allocate array big enough to fit entries for most hash tables.
+	bentries := make([]unsafe.Pointer, 0, 16*entriesPerMapOfBucket)
+	tablep := atomic.LoadPointer(&m.table)
+	table := *(*mapOfTable[K, V])(tablep)
+	for i := range table.buckets {
+		rootb := &table.buckets[i]
+		b := rootb
+		// Prevent concurrent modifications and copy all entries into
+		// the intermediate slice.
+		rootb.mu.Lock()
+		for {
+			for i := 0; i < entriesPerMapOfBucket; i++ {
+				if b.entries[i] != nil {
+					bentries = append(bentries, b.entries[i])
+				}
+			}
+			if b.next == nil {
+				rootb.mu.Unlock()
+				break
+			}
+			b = (*bucketOfPadded)(b.next)
+		}
+		// Call the function for all copied entries.
+		for j := range bentries {
+			entry := (*entryOf[K, V])(bentries[j])
+			if !f(entry.key, entry.value) {
+				return
+			}
+			// Remove the reference to avoid preventing the copied
+			// entries from being GCed until this method finishes.
+			bentries[j] = zeroPtr
+		}
+		bentries = bentries[:0]
+	}
+}
+
+// Clear deletes all keys and values currently stored in the map.
+func (m *MapOf[K, V]) Clear() {
+	table := (*mapOfTable[K, V])(atomic.LoadPointer(&m.table))
+	m.resize(table, mapClearHint)
+}
+
+// Size returns current size of the map.
+func (m *MapOf[K, V]) Size() int {
+	table := (*mapOfTable[K, V])(atomic.LoadPointer(&m.table))
+	return int(table.sumSize())
+}
+
+func appendToBucketOf(h2 uint8, entryPtr unsafe.Pointer, b *bucketOfPadded) {
+	for {
+		for i := 0; i < entriesPerMapOfBucket; i++ {
+			if b.entries[i] == nil {
+				b.meta = setByte(b.meta, h2, i)
+				b.entries[i] = entryPtr
+				return
+			}
+		}
+		if b.next == nil {
+			newb := new(bucketOfPadded)
+			newb.meta = setByte(defaultMeta, h2, 0)
+			newb.entries[0] = entryPtr
+			b.next = unsafe.Pointer(newb)
+			return
+		}
+		b = (*bucketOfPadded)(b.next)
+	}
+}
+
+func (table *mapOfTable[K, V]) addSize(bucketIdx uint64, delta int) {
+	cidx := uint64(len(table.size)-1) & bucketIdx
+	atomic.AddInt64(&table.size[cidx].c, int64(delta))
+}
+
+func (table *mapOfTable[K, V]) addSizePlain(bucketIdx uint64, delta int) {
+	cidx := uint64(len(table.size)-1) & bucketIdx
+	table.size[cidx].c += int64(delta)
+}
+
+func (table *mapOfTable[K, V]) sumSize() int64 {
+	sum := int64(0)
+	for i := range table.size {
+		sum += atomic.LoadInt64(&table.size[i].c)
+	}
+	return sum
+}
+
+func h1(h uint64) uint64 {
+	return h >> 7
+}
+
+func h2(h uint64) uint8 {
+	return uint8(h & 0x7f)
+}
+
+// Stats returns statistics for the MapOf. Just like other map
+// methods, this one is thread-safe. Yet it's an O(N) operation,
+// so it should be used only for diagnostics or debugging purposes.
+func (m *MapOf[K, V]) Stats() MapStats {
+	stats := MapStats{
+		TotalGrowths: atomic.LoadInt64(&m.totalGrowths),
+		TotalShrinks: atomic.LoadInt64(&m.totalShrinks),
+		MinEntries:   math.MaxInt32,
+	}
+	table := (*mapOfTable[K, V])(atomic.LoadPointer(&m.table))
+	stats.RootBuckets = len(table.buckets)
+	stats.Counter = int(table.sumSize())
+	stats.CounterLen = len(table.size)
+	for i := range table.buckets {
+		nentries := 0
+		b := &table.buckets[i]
+		stats.TotalBuckets++
+		for {
+			nentriesLocal := 0
+			stats.Capacity += entriesPerMapOfBucket
+			for i := 0; i < entriesPerMapOfBucket; i++ {
+				if atomic.LoadPointer(&b.entries[i]) != nil {
+					stats.Size++
+					nentriesLocal++
+				}
+			}
+			nentries += nentriesLocal
+			if nentriesLocal == 0 {
+				stats.EmptyBuckets++
+			}
+			if b.next == nil {
+				break
+			}
+			b = (*bucketOfPadded)(atomic.LoadPointer(&b.next))
+			stats.TotalBuckets++
+		}
+		if nentries < stats.MinEntries {
+			stats.MinEntries = nentries
+		}
+		if nentries > stats.MaxEntries {
+			stats.MaxEntries = nentries
+		}
+	}
+	return stats
+}