diff options
| -rw-r--r-- | ils.go | 29 |
1 files changed, 17 insertions, 12 deletions
@@ -204,19 +204,24 @@ func thumbnailFiles(w io.Writer, imagePaths []string, width, rowWidth, cellX, ce rowImages[i] = make(chan image.Image, 1) } errCh := make(chan error, 1) - for i, row := range rows { - go func() { - img, err := compositeImageRow(row, width*cellX, rowWidth*cellX, cellX, aspectRatio) - if err != nil { - select { - case errCh <- err: - default: + go func() { + sem := make(chan struct{}, 20) + for i, row := range rows { + sem <- struct{}{} + go func() { + defer func() { <-sem }() + img, err := compositeImageRow(row, width*cellX, rowWidth*cellX, cellX, aspectRatio) + if err != nil { + select { + case errCh <- err: + default: + } + return } - return - } - rowImages[i] <- img - }() - } + rowImages[i] <- img + }() + } + }() for i, row := range rows { thisRowWidth := 0 for j, filename := range row { |