--- /dev/null
+// Copyright 2016 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.
+
+use std::process::{Command, Stdio};
+use std::env;
+use std::sync::{Mutex, RwLock};
+use std::time::Duration;
+use std::thread;
+
+fn test_mutex() {
+ let m = Mutex::new(0);
+ let _g = m.lock().unwrap();
+ let _g2 = m.lock().unwrap();
+}
+
+fn test_try_mutex() {
+ let m = Mutex::new(0);
+ let _g = m.lock().unwrap();
+ let _g2 = m.try_lock().unwrap();
+}
+
+fn test_rwlock_ww() {
+ let m = RwLock::new(0);
+ let _g = m.write().unwrap();
+ let _g2 = m.write().unwrap();
+}
+
+fn test_try_rwlock_ww() {
+ let m = RwLock::new(0);
+ let _g = m.write().unwrap();
+ let _g2 = m.try_write().unwrap();
+}
+
+fn test_rwlock_rw() {
+ let m = RwLock::new(0);
+ let _g = m.read().unwrap();
+ let _g2 = m.write().unwrap();
+}
+
+fn test_try_rwlock_rw() {
+ let m = RwLock::new(0);
+ let _g = m.read().unwrap();
+ let _g2 = m.try_write().unwrap();
+}
+
+fn test_rwlock_wr() {
+ let m = RwLock::new(0);
+ let _g = m.write().unwrap();
+ let _g2 = m.read().unwrap();
+}
+
+fn test_try_rwlock_wr() {
+ let m = RwLock::new(0);
+ let _g = m.write().unwrap();
+ let _g2 = m.try_read().unwrap();
+}
+
+fn main() {
+ let args: Vec<String> = env::args().collect();
+ if args.len() > 1 {
+ match &*args[1] {
+ "mutex" => test_mutex(),
+ "try_mutex" => test_try_mutex(),
+ "rwlock_ww" => test_rwlock_ww(),
+ "try_rwlock_ww" => test_try_rwlock_ww(),
+ "rwlock_rw" => test_rwlock_rw(),
+ "try_rwlock_rw" => test_try_rwlock_rw(),
+ "rwlock_wr" => test_rwlock_wr(),
+ "try_rwlock_wr" => test_try_rwlock_wr(),
+ _ => unreachable!(),
+ }
+ // If we reach this point then the test failed
+ println!("TEST FAILED: {}", args[1]);
+ } else {
+ let mut v = vec![];
+ v.push(Command::new(&args[0]).arg("mutex").stderr(Stdio::null()).spawn().unwrap());
+ v.push(Command::new(&args[0]).arg("try_mutex").stderr(Stdio::null()).spawn().unwrap());
+ v.push(Command::new(&args[0]).arg("rwlock_ww").stderr(Stdio::null()).spawn().unwrap());
+ v.push(Command::new(&args[0]).arg("try_rwlock_ww").stderr(Stdio::null()).spawn().unwrap());
+ v.push(Command::new(&args[0]).arg("rwlock_rw").stderr(Stdio::null()).spawn().unwrap());
+ v.push(Command::new(&args[0]).arg("try_rwlock_rw").stderr(Stdio::null()).spawn().unwrap());
+ v.push(Command::new(&args[0]).arg("rwlock_wr").stderr(Stdio::null()).spawn().unwrap());
+ v.push(Command::new(&args[0]).arg("try_rwlock_wr").stderr(Stdio::null()).spawn().unwrap());
+
+ thread::sleep(Duration::new(1, 0));
+
+ // Make sure all subprocesses either panicked or were killed because they deadlocked
+ for mut c in v {
+ c.kill().ok();
+ assert!(!c.wait().unwrap().success());
+ }
+ }
+}