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Diffstat (limited to 'info.toml')
| -rw-r--r-- | info.toml | 20 |
1 files changed, 6 insertions, 14 deletions
@@ -1136,25 +1136,17 @@ to **immutable** data. But we want to *change* the number of `jobs_completed` so we'll need to also use another type that will only allow one thread to mutate the data at a time. Take a look at this section of the book: https://doc.rust-lang.org/book/ch16-03-shared-state.html#atomic-reference-counting-with-arct -and keep reading if you'd like more hints :) -Do you now have an `Arc` `Mutex` `JobStatus` at the beginning of main? Like: +Keep reading if you'd like more hints :) + +Do you now have an `Arc<Mutex<JobStatus>>` at the beginning of `main`? Like: ``` let status = Arc::new(Mutex::new(JobStatus { jobs_completed: 0 })); ``` -Similar to the code in the example in the book that happens after the text -that says 'Sharing a Mutex<T> Between Multiple Threads'. If not, give that a -try! If you do and would like more hints, keep reading!! - -Make sure neither of your threads are holding onto the lock of the mutex -while they are sleeping, since this will prevent the other thread from -being allowed to get the lock. Locks are automatically released when -they go out of scope. - -If you've learned from the sample solutions, I encourage you to come -back to this exercise and try it again in a few days to reinforce -what you've learned :)""" +Similar to the code in the following example in the book: +https://doc.rust-lang.org/book/ch16-03-shared-state.html#sharing-a-mutext-between-multiple-threads +""" [[exercises]] name = "threads3" |