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finetune view waiting

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This commit is contained in:
vyzo 2021-07-13 09:06:40 +03:00
parent 257423e917
commit af399529ec
1 changed files with 13 additions and 10 deletions
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23
blockstore/splitstore/splitstore.go
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@ -146,15 +146,16 @@ type SplitStore struct {
debug *debugLog debug *debugLog
// transactional protection for concurrent read/writes during compaction // transactional protection for concurrent read/writes during compaction
txnLk sync.RWMutex txnLk sync.RWMutex
txnViewsMx sync.Mutex txnViewsMx sync.Mutex
txnViewsCond sync.Cond txnViewsCond sync.Cond
txnViews int txnViews int
txnActive bool txnViewsWaiting bool
txnProtect MarkSet txnActive bool
txnRefsMx sync.Mutex txnProtect MarkSet
txnRefs map[cid.Cid]struct{} txnRefsMx sync.Mutex
txnMissing map[cid.Cid]struct{} txnRefs map[cid.Cid]struct{}
txnMissing map[cid.Cid]struct{}
} }
var _ bstore.Blockstore = (*SplitStore)(nil) var _ bstore.Blockstore = (*SplitStore)(nil)
@ -651,7 +652,7 @@ func (s *SplitStore) viewDone() {
defer s.txnViewsMx.Unlock() defer s.txnViewsMx.Unlock()
s.txnViews-- s.txnViews--
if s.txnViews == 0 { if s.txnViews == 0 && s.txnViewsWaiting {
s.txnViewsCond.Signal() s.txnViewsCond.Signal()
} }
} }
@ -660,9 +661,11 @@ func (s *SplitStore) viewWait() {
s.txnViewsMx.Lock() s.txnViewsMx.Lock()
defer s.txnViewsMx.Unlock() defer s.txnViewsMx.Unlock()
s.txnViewsWaiting = true
for s.txnViews > 0 { for s.txnViews > 0 {
s.txnViewsCond.Wait() s.txnViewsCond.Wait()
} }
s.txnViewsWaiting = false
} }
// transactionally protect a reference to an object // transactionally protect a reference to an object