Function delete_folder 

pub fn delete_folder(dpath: &Path) -> Result<(), RdError>

Deletes a directory and all its contents in parallel.

This function performs a fast, parallel deletion of a directory by:

1. Walking the directory tree to catalog all subdirectories by depth
2. Deleting directories in parallel, starting from the deepest level
3. If deletion fails, attempting to fix permission issues and retrying

The parallel approach significantly speeds up deletion of large directory trees.

Arguments

• dpath - The path to the directory to delete

Errors

Returns an error if:

• The directory walk fails
• Permissions cannot be fixed
• The final deletion attempt fails

Examples

use std::path::PathBuf;

let path = PathBuf::from("/tmp/test_dir");
delete_folder(&path)?;