| // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // exec-env:RUST_LOG=rust_log_filter/foo |
| // ignore-emscripten no threads support |
| |
| #![allow(unknown_features)] |
| #![feature(box_syntax, std_misc, rustc_private)] |
| |
| #[macro_use] |
| extern crate log; |
| |
| use std::sync::mpsc::{channel, Sender, Receiver}; |
| use std::thread; |
| |
| pub struct ChannelLogger { |
| tx: Sender<String> |
| } |
| |
| impl ChannelLogger { |
| pub fn new() -> (Box<ChannelLogger>, Receiver<String>) { |
| let (tx, rx) = channel(); |
| (box ChannelLogger { tx: tx }, rx) |
| } |
| } |
| |
| impl log::Logger for ChannelLogger { |
| fn log(&mut self, record: &log::LogRecord) { |
| self.tx.send(format!("{}", record.args)).unwrap(); |
| } |
| } |
| |
| pub fn main() { |
| let (logger, rx) = ChannelLogger::new(); |
| |
| let t = thread::spawn(move|| { |
| log::set_logger(logger); |
| |
| info!("foo"); |
| info!("bar"); |
| info!("foo bar"); |
| info!("bar foo"); |
| }); |
| |
| assert_eq!(rx.recv().unwrap(), "foo"); |
| assert_eq!(rx.recv().unwrap(), "foo bar"); |
| assert_eq!(rx.recv().unwrap(), "bar foo"); |
| assert!(rx.recv().is_err()); |
| |
| t.join(); |
| } |