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Make Reader event notification asynchronous

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Instead of notifying the event coordinator (EventBox) whenever a new
line is arrived, start a background goroutine that periodically does the
task. Atomic.StoreInt32 is much cheaper than mutex synchronization
that happens during EventBox update.
This commit is contained in:
Junegunn Choi
2017-08-16 03:24:23 +09:00
parent 0d171ba1d8
commit 487c8fe88f
4 changed files with 64 additions and 18 deletions
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8
src/core.go
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@@ -115,9 +115,9 @@ func Run(opts *Options, revision string) {
// Reader
streamingFilter := opts.Filter != nil && !sort && !opts.Tac && !opts.Sync
if !streamingFilter {
reader := Reader{func(data []byte) bool {
reader := NewReader(func(data []byte) bool {
return chunkList.Push(data)
}, eventBox, opts.ReadZero}
}, eventBox, opts.ReadZero)
go reader.ReadSource()
}
@@ -150,7 +150,7 @@ func Run(opts *Options, revision string) {
found := false
if streamingFilter {
slab := util.MakeSlab(slab16Size, slab32Size)
reader := Reader{
reader := NewReader(
func(runes []byte) bool {
item := Item{}
if chunkList.trans(&item, runes, 0) {
@@ -160,7 +160,7 @@ func Run(opts *Options, revision string) {
}
}
return false
}, eventBox, opts.ReadZero}
}, eventBox, opts.ReadZero)
reader.ReadSource()
} else {
eventBox.Unwatch(EvtReadNew)