1 files changed, 0 insertions, 125 deletions
diff --git a/vendor/github.com/puzpuzpuz/xsync/v3/mpmcqueue.go b/vendor/github.com/puzpuzpuz/xsync/v3/mpmcqueue.go
deleted file mode 100644
index c5fd26237..000000000
--- a/vendor/github.com/puzpuzpuz/xsync/v3/mpmcqueue.go
+++ /dev/null
@@ -1,125 +0,0 @@
-package xsync
-
-import (
-	"runtime"
-	"sync/atomic"
-	"unsafe"
-)
-
-// A MPMCQueue is a bounded multi-producer multi-consumer concurrent
-// queue.
-//
-// MPMCQueue instances must be created with NewMPMCQueue function.
-// A MPMCQueue must not be copied after first use.
-//
-// Based on the data structure from the following C++ library:
-// https://github.com/rigtorp/MPMCQueue
-type MPMCQueue struct {
-	cap  uint64
-	head uint64
-	//lint:ignore U1000 prevents false sharing
-	hpad [cacheLineSize - 8]byte
-	tail uint64
-	//lint:ignore U1000 prevents false sharing
-	tpad  [cacheLineSize - 8]byte
-	slots []slotPadded
-}
-
-type slotPadded struct {
-	slot
-	//lint:ignore U1000 prevents false sharing
-	pad [cacheLineSize - unsafe.Sizeof(slot{})]byte
-}
-
-type slot struct {
-	turn uint64
-	item interface{}
-}
-
-// NewMPMCQueue creates a new MPMCQueue instance with the given
-// capacity.
-func NewMPMCQueue(capacity int) *MPMCQueue {
-	if capacity < 1 {
-		panic("capacity must be positive number")
-	}
-	return &MPMCQueue{
-		cap:   uint64(capacity),
-		slots: make([]slotPadded, capacity),
-	}
-}
-
-// Enqueue inserts the given item into the queue.
-// Blocks, if the queue is full.
-//
-// Deprecated: use TryEnqueue in combination with runtime.Gosched().
-func (q *MPMCQueue) Enqueue(item interface{}) {
-	head := atomic.AddUint64(&q.head, 1) - 1
-	slot := &q.slots[q.idx(head)]
-	turn := q.turn(head) * 2
-	for atomic.LoadUint64(&slot.turn) != turn {
-		runtime.Gosched()
-	}
-	slot.item = item
-	atomic.StoreUint64(&slot.turn, turn+1)
-}
-
-// Dequeue retrieves and removes the item from the head of the queue.
-// Blocks, if the queue is empty.
-//
-// Deprecated: use TryDequeue in combination with runtime.Gosched().
-func (q *MPMCQueue) Dequeue() interface{} {
-	tail := atomic.AddUint64(&q.tail, 1) - 1
-	slot := &q.slots[q.idx(tail)]
-	turn := q.turn(tail)*2 + 1
-	for atomic.LoadUint64(&slot.turn) != turn {
-		runtime.Gosched()
-	}
-	item := slot.item
-	slot.item = nil
-	atomic.StoreUint64(&slot.turn, turn+1)
-	return item
-}
-
-// TryEnqueue inserts the given item into the queue. Does not block
-// and returns immediately. The result indicates that the queue isn't
-// full and the item was inserted.
-func (q *MPMCQueue) TryEnqueue(item interface{}) bool {
-	head := atomic.LoadUint64(&q.head)
-	slot := &q.slots[q.idx(head)]
-	turn := q.turn(head) * 2
-	if atomic.LoadUint64(&slot.turn) == turn {
-		if atomic.CompareAndSwapUint64(&q.head, head, head+1) {
-			slot.item = item
-			atomic.StoreUint64(&slot.turn, turn+1)
-			return true
-		}
-	}
-	return false
-}
-
-// TryDequeue retrieves and removes the item from the head of the
-// queue. Does not block and returns immediately. The ok result
-// indicates that the queue isn't empty and an item was retrieved.
-func (q *MPMCQueue) TryDequeue() (item interface{}, ok bool) {
-	tail := atomic.LoadUint64(&q.tail)
-	slot := &q.slots[q.idx(tail)]
-	turn := q.turn(tail)*2 + 1
-	if atomic.LoadUint64(&slot.turn) == turn {
-		if atomic.CompareAndSwapUint64(&q.tail, tail, tail+1) {
-			item = slot.item
-			ok = true
-			slot.item = nil
-			atomic.StoreUint64(&slot.turn, turn+1)
-			return
-		}
-	}
-	return
-}
-
-func (q *MPMCQueue) idx(i uint64) uint64 {
-	return i % q.cap
-}
-
-func (q *MPMCQueue) turn(i uint64) uint64 {
-	return i / q.cap
-}