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concurrent.go
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concurrent.go
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/*******************************************************************************
* Copyright 2019 Dell 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 concurrent
import "sync"
// Closure defines the signature for the closure to execute concurrently within ExecuteAndAggregateResults.
type Closure func() interface{}
// ExecuteAndAggregateResults handles concurrent execution of []Closure.
func ExecuteAndAggregateResults(closures []Closure) []interface{} {
var wg sync.WaitGroup
stream := make(chan interface{})
var results []interface{}
for _, closure := range closures {
wg.Add(1)
go func(closure func() interface{}) {
defer wg.Done()
stream <- closure()
}(closure)
}
go func() {
wg.Wait()
close(stream)
}()
for result := range stream {
results = append(results, result)
}
return results
}