Maybe ignore the explicit examples of a race condition

pull/10/head
Alexis Beingessner 9 years ago committed by Manish Goregaokar
parent 6e480e28e6
commit baab22d05e

@ -25,7 +25,7 @@ race condition can't violate memory safety in a Rust program on
its own. Only in conjunction with some other unsafe code can a race condition
actually violate memory safety. For instance:
```rust
```rust,norun
use std::thread;
use std::sync::atomic::{AtomicUsize, Ordering};
use std::sync::Arc;
@ -54,6 +54,24 @@ thread::spawn(move || {
// program execution (panicing is rarely correct) depends on order of
// thread execution.
println!("{}", data[idx.load(Ordering::SeqCst)]);
```
```rust,norun
use std::thread;
use std::sync::atomic::{AtomicUsize, Ordering};
use std::sync::Arc;
let data = vec![1, 2, 3, 4];
let idx = Arc::new(AtomicUsize::new(0));
let other_idx = idx.clone();
// `move` captures other_idx by-value, moving it into this thread
thread::spawn(move || {
// It's ok to mutate idx because this value
// is an atomic, so it can't cause a Data Race.
other_idx.fetch_add(10, Ordering::SeqCst);
});
if idx.load(Ordering::SeqCst) < data.len() {
unsafe {

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