diff options
Diffstat (limited to 'book/en/src/by-example')
| -rw-r--r-- | book/en/src/by-example/resources.md | 6 | ||||
| -rw-r--r-- | book/en/src/by-example/tips.md | 1 |
2 files changed, 5 insertions, 2 deletions
diff --git a/book/en/src/by-example/resources.md b/book/en/src/by-example/resources.md index d082dfc1..9d90fbe3 100644 --- a/book/en/src/by-example/resources.md +++ b/book/en/src/by-example/resources.md @@ -1,4 +1,4 @@ -## Resources +# Resources The framework provides an abstraction to share data between any of the contexts we saw in the previous section (task handlers, `init` and `idle`): resources. @@ -116,7 +116,9 @@ are required to access the resource even if the resource is contended by several tasks running at different priorities. The downside is that the task only gets a shared reference (`&-`) to the resource, limiting the operations it can perform on it, but where a shared reference is enough this approach reduces the number -of required locks. +of required locks. In addition to simple immutable data, this shared access can +be useful where the resource type safely implements interior mutability, with +appropriate locking or atomic operations of its own. Note that in this release of RTIC it is not possible to request both exclusive access (`&mut-`) and shared access (`&-`) to the *same* resource from different diff --git a/book/en/src/by-example/tips.md b/book/en/src/by-example/tips.md index d8264c90..090b30ad 100644 --- a/book/en/src/by-example/tips.md +++ b/book/en/src/by-example/tips.md @@ -116,6 +116,7 @@ Here's an example where `heapless::Pool` is used to "box" buffers of 128 bytes. ``` rust {{#include ../../../../examples/pool.rs}} ``` + ``` console $ cargo run --example pool {{#include ../../../../ci/expected/pool.run}} |