mirror of https://github.com/sharkdp/fd.git
70 lines
2.3 KiB
Rust
70 lines
2.3 KiB
Rust
use std::sync::mpsc::Receiver;
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use std::sync::{Arc, Mutex};
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use crate::config::Config;
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use crate::dir_entry::DirEntry;
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use crate::error::print_error;
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use crate::exit_codes::{merge_exitcodes, ExitCode};
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use crate::walk::WorkerResult;
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use super::CommandSet;
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/// An event loop that listens for inputs from the `rx` receiver. Each received input will
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/// generate a command with the supplied command template. The generated command will then
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/// be executed, and this process will continue until the receiver's sender has closed.
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pub fn job(
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rx: Arc<Mutex<Receiver<WorkerResult>>>,
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cmd: Arc<CommandSet>,
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out_perm: Arc<Mutex<()>>,
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config: &Config,
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) -> ExitCode {
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// Output should be buffered when only running a single thread
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let buffer_output: bool = config.threads > 1;
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let mut results: Vec<ExitCode> = Vec::new();
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loop {
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// Create a lock on the shared receiver for this thread.
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let lock = rx.lock().unwrap();
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// Obtain the next result from the receiver, else if the channel
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// has closed, exit from the loop
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let dir_entry: DirEntry = match lock.recv() {
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Ok(WorkerResult::Entry(dir_entry)) => dir_entry,
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Ok(WorkerResult::Error(err)) => {
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if config.show_filesystem_errors {
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print_error(err.to_string());
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}
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continue;
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}
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Err(_) => break,
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};
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// Drop the lock so that other threads can read from the receiver.
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drop(lock);
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// Generate a command, execute it and store its exit code.
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results.push(cmd.execute(
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dir_entry.stripped_path(config),
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Arc::clone(&out_perm),
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buffer_output,
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))
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}
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// Returns error in case of any error.
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merge_exitcodes(results)
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}
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pub fn batch(rx: Receiver<WorkerResult>, cmd: &CommandSet, config: &Config) -> ExitCode {
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let paths = rx
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.into_iter()
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.filter_map(|worker_result| match worker_result {
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WorkerResult::Entry(dir_entry) => Some(dir_entry.into_stripped_path(config)),
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WorkerResult::Error(err) => {
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if config.show_filesystem_errors {
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print_error(err.to_string());
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}
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None
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}
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});
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cmd.execute_batch(paths, config.batch_size)
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}
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