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//@ run-pass
//@ ignore-wasm32 no processes
//@ ignore-sgx no processes
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());
}
}
}
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