Messages in this thread Patch in this message | | | From | Boqun Feng <> | Subject | [PATCH v2 2/2] sample: rust: print: Add sampe code for Arc printing | Date | Tue, 7 Feb 2023 10:52:16 -0800 |
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This both demonstrates the usage of different print format in Rust and serves as a selftest for the `Display` and `Debug` implementation of `Arc` and its friends.
Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Reviewed-by: Björn Roy Baron <bjorn3_gh@protonmail.com> Reviewed-by: Finn Behrens <fin@nyantec.com> Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com> --- samples/rust/rust_print.rs | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)
diff --git a/samples/rust/rust_print.rs b/samples/rust/rust_print.rs index 8b39d9cef6d1..165a8d7b1c07 100644 --- a/samples/rust/rust_print.rs +++ b/samples/rust/rust_print.rs @@ -15,6 +15,30 @@ module! { struct RustPrint; +fn arc_print() -> Result { + use kernel::sync::*; + + let a = Arc::try_new(1)?; + let b = UniqueArc::try_new("hello, world")?; + + // Prints the value of data in `a`. + pr_info!("{}", a); + + // Uses ":?" to print debug fmt of `b`. + pr_info!("{:?}", b); + + let a: Arc<&str> = b.into(); + let c = a.clone(); + + // Uses `dbg` to print, will move `c`. + dbg!(c); + + // Prints debug fmt with pretty-print "#" and number-in-hex "x". + pr_info!("{:#x?}", a); + + Ok(()) +} + impl kernel::Module for RustPrint { fn init(_module: &'static ThisModule) -> Result<Self> { pr_info!("Rust printing macros sample (init)\n"); @@ -43,6 +67,8 @@ impl kernel::Module for RustPrint { pr_cont!(" is {}", "continued"); pr_cont!(" with {}\n", "args"); + arc_print()?; + Ok(RustPrint) } } -- 2.39.1
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