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Reverse AtomicBool value in nomicon example to agree with its comment. #28149

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Merged
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Sep 2, 2015
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Reverse AtomicBool value in nomicon example to agree with its comment. #28149

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8 changes: 4 additions & 4 deletions src/doc/nomicon/atomics.md
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Original file line number Diff line number Diff line change
Expand Up @@ -210,18 +210,18 @@ use std::sync::atomic::{AtomicBool, Ordering};
use std::thread;

fn main() {
let lock = Arc::new(AtomicBool::new(true)); // value answers "am I locked?"
let lock = Arc::new(AtomicBool::new(false)); // value answers "am I locked?"

// ... distribute lock to threads somehow ...

// Try to acquire the lock by setting it to false
while !lock.compare_and_swap(true, false, Ordering::Acquire) { }
// Try to acquire the lock by setting it to true
while lock.compare_and_swap(false, true, Ordering::Acquire) { }
// broke out of the loop, so we successfully acquired the lock!

// ... scary data accesses ...

// ok we're done, release the lock
lock.store(true, Ordering::Release);
lock.store(false, Ordering::Release);
}
```

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