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| -rw-r--r-- | src/tools/clippy/src/docs/empty_loop.txt | 27 |
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diff --git a/src/tools/clippy/src/docs/empty_loop.txt b/src/tools/clippy/src/docs/empty_loop.txt deleted file mode 100644 index fea49a74d..000000000 --- a/src/tools/clippy/src/docs/empty_loop.txt +++ /dev/null @@ -1,27 +0,0 @@ -### What it does -Checks for empty `loop` expressions. - -### Why is this bad? -These busy loops burn CPU cycles without doing -anything. It is _almost always_ a better idea to `panic!` than to have -a busy loop. - -If panicking isn't possible, think of the environment and either: - - block on something - - sleep the thread for some microseconds - - yield or pause the thread - -For `std` targets, this can be done with -[`std::thread::sleep`](https://doc.rust-lang.org/std/thread/fn.sleep.html) -or [`std::thread::yield_now`](https://doc.rust-lang.org/std/thread/fn.yield_now.html). - -For `no_std` targets, doing this is more complicated, especially because -`#[panic_handler]`s can't panic. To stop/pause the thread, you will -probably need to invoke some target-specific intrinsic. Examples include: - - [`x86_64::instructions::hlt`](https://docs.rs/x86_64/0.12.2/x86_64/instructions/fn.hlt.html) - - [`cortex_m::asm::wfi`](https://docs.rs/cortex-m/0.6.3/cortex_m/asm/fn.wfi.html) - -### Example -``` -loop {} -```
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