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fix(perf): direct field access

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Signed-off-by: MastahSenpai <26342994+ii64@users.noreply.github.com>
This commit is contained in:
MastahSenpai 2022-01-26 01:21:13 +07:00
parent 5937800f05
commit 67636d3ab2
Signed by untrusted user who does not match committer: Xeffy
GPG key ID: E41C08AD390E7C49
1 changed files with 21 additions and 19 deletions
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40
queue/queue.go
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@ -20,8 +20,8 @@ type QueueCQEHandler func(cqe *gouring.CQEntry) (err error)
type Queue struct {
ring *gouring.Ring
sq *gouring.SQRing
cq *gouring.CQRing
sq gouring.SQRing
cq gouring.CQRing
sqeHead uint32
sqeTail uint32
@ -59,11 +59,12 @@ func (q *Queue) precheck() error {
//
// SQEntry ptr returned is passed by value
func (q *Queue) _getSQEntry() *gouring.SQEntry {
head := atomic.LoadUint32(q.sq.Head())
head := atomic.LoadUint32(q.sq.Head)
next := q.sqeTail + 1
if (next - head) <= atomic.LoadUint32(q.sq.RingEntries()) {
sqe := q.sq.Get(q.sqeTail & (*q.sq.RingMask()))
if (next - head) <= atomic.LoadUint32(q.sq.RingEntries) {
sqe := &q.sq.Event[q.sqeTail&(*q.sq.RingMask)]
q.sqeTail = next
sqe.Reset()
return sqe
@ -77,7 +78,8 @@ func (q *Queue) GetSQEntry() (sqe *gouring.SQEntry) {
if sqe != nil {
return
}
// runtime.Gosched()
runtime.Gosched()
}
}
@ -86,8 +88,8 @@ func (q *Queue) sqFallback(d uint32) {
}
func (q *Queue) sqFlush() uint32 {
khead := atomic.LoadUint32(q.sq.Head())
ktail := atomic.LoadUint32(q.sq.Tail())
khead := atomic.LoadUint32(q.sq.Head)
ktail := atomic.LoadUint32(q.sq.Tail)
// if sq head equals sq tail
if q.sqeHead == q.sqeTail {
@ -95,11 +97,11 @@ func (q *Queue) sqFlush() uint32 {
}
for toSubmit := q.sqeTail - q.sqeHead; toSubmit > 0; toSubmit-- {
*q.sq.Array().Get(ktail & (*q.sq.RingMask())) = q.sqeHead & (*q.sq.RingMask())
*q.sq.Array.Get(ktail & (*q.sq.RingMask)) = q.sqeHead & (*q.sq.RingMask)
ktail++
q.sqeHead++
}
atomic.StoreUint32(q.sq.Tail(), ktail)
atomic.StoreUint32(q.sq.Tail, ktail)
return ktail - khead
}
@ -142,16 +144,16 @@ func (q *Queue) SubmitAndWait(waitNr uint) (ret int, err error) {
//
func (q *Queue) cqPeek() (cqe *gouring.CQEntry) {
khead := atomic.LoadUint32(q.cq.Head())
if khead != atomic.LoadUint32(q.cq.Tail()) {
cqe = q.cq.Get(khead & atomic.LoadUint32(q.cq.RingMask()))
khead := atomic.LoadUint32(q.cq.Head)
if khead != atomic.LoadUint32(q.cq.Tail) {
cqe = &q.cq.Event[khead&atomic.LoadUint32(q.cq.RingMask)]
}
return
}
func (q *Queue) cqAdvance(d uint32) {
if d != 0 {
atomic.AddUint32(q.cq.Head(), d) // mark readed
atomic.AddUint32(q.cq.Head, d) // mark readed
}
}
@ -165,7 +167,7 @@ func (q *Queue) GetCQEntryWait(wait bool, waitNr uint) (cqe *gouring.CQEntry, er
if err = q.precheck(); err != nil {
return
}
var tryPeeks int
// var tryPeeks int
for {
if cqe = q.cqPeek(); cqe != nil {
q.cqAdvance(1)
@ -190,10 +192,10 @@ func (q *Queue) GetCQEntryWait(wait bool, waitNr uint) (cqe *gouring.CQEntry, er
continue
}
if tryPeeks++; tryPeeks < 3 {
runtime.Gosched()
continue
}
// if tryPeeks++; tryPeeks < 3 {
runtime.Gosched()
// continue
// }
// implement interrupt
}
}