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Consolidate Result and rank structs

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By not storing item index twice, we can cut down the size of Result
struct and now it makes more sense to store and pass Results by values.
Benchmarks show no degradation of performance by additional pointer
indirection for looking up index.
This commit is contained in:
Junegunn Choi
2017-07-18 03:10:49 +09:00
parent 5e72709613
commit bbe10f4f77
9 changed files with 65 additions and 68 deletions
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8
src/matcher.go
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@@ -131,7 +131,7 @@ func (m *Matcher) sliceChunks(chunks []*Chunk) [][]*Chunk {
type partialResult struct {
index int
matches []*Result
matches []Result
}
func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
@@ -162,7 +162,7 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
go func(idx int, slab *util.Slab, chunks []*Chunk) {
defer func() { waitGroup.Done() }()
count := 0
allMatches := make([][]*Result, len(chunks))
allMatches := make([][]Result, len(chunks))
for idx, chunk := range chunks {
matches := request.pattern.Match(chunk, slab)
allMatches[idx] = matches
@@ -172,7 +172,7 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
}
countChan <- len(matches)
}
sliceMatches := make([]*Result, 0, count)
sliceMatches := make([]Result, 0, count)
for _, matches := range allMatches {
sliceMatches = append(sliceMatches, matches...)
}
@@ -212,7 +212,7 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
}
}
partialResults := make([][]*Result, numSlices)
partialResults := make([][]Result, numSlices)
for _ = range slices {
partialResult := <-resultChan
partialResults[partialResult.index] = partialResult.matches