githaven-fork/vendor/github.com/blevesearch/bleve_index_api/analysis.go

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// Copyright (c) 2015 Couchbase, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package index
type AnalysisWork func()
type AnalysisQueue struct {
queue chan AnalysisWork
done chan struct{}
}
func (q *AnalysisQueue) Queue(work AnalysisWork) {
q.queue <- work
}
func (q *AnalysisQueue) Close() {
close(q.done)
}
func NewAnalysisQueue(numWorkers int) *AnalysisQueue {
rv := AnalysisQueue{
queue: make(chan AnalysisWork),
done: make(chan struct{}),
}
for i := 0; i < numWorkers; i++ {
go AnalysisWorker(rv)
}
return &rv
}
func AnalysisWorker(q AnalysisQueue) {
// read work off the queue
for {
select {
case <-q.done:
return
case w := <-q.queue:
w()
}
}
}