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package remove
import (
"os"
"runtime"
"sync"
"github.com/dundee/gdu/v5/pkg/fs"
)
var concurrencyLimit = make(chan struct{}, 3*runtime.GOMAXPROCS(0))
// ItemFromDirParallel removes item from dir
func ItemFromDirParallel(dir, item fs.Item) error {
if !item.IsDir() {
return ItemFromDir(dir, item)
}
errChan := make(chan error, 1) // we show only first error
var wait sync.WaitGroup
// remove all files in the directory in parallel
for _, file := range item.GetFilesLocked() {
if !file.IsDir() {
continue
}
wait.Add(1)
go func(itemPath string) {
concurrencyLimit <- struct{}{}
defer func() { <-concurrencyLimit }()
err := os.RemoveAll(itemPath)
if err != nil {
select {
// write error to channel if it's empty
case errChan <- err:
default:
}
}
wait.Done()
}(file.GetPath())
}
wait.Wait()
// check if there was an error
select {
case err := <-errChan:
return err
default:
}
// remove the directory itself
err := os.RemoveAll(item.GetPath())
if err != nil {
return err
}
// update parent directory
dir.RemoveFile(item)
return nil
}
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