) { // explicitly return the block to the pool drop(_x); debug::exit(debug::EXIT_SUCCESS); // Exit QEMU simulator } #[task(priority = 2)] fn bar(_: bar::Context, _x: Box
) { // this is done automatically so we can omit the call to `drop` // drop(x); }\n} $ cargo run --target thumbv7m-none-eabi --example pool","breadcrumbs":"RTIC by example » Tips & Tricks » Avoid copies when message passing » Using indirection for faster message passing","id":"41","title":"Using indirection for faster message passing"},"42":{"body":"In #[init] and #[idle] local resources have 'static lifetime. Useful when pre-allocating and/or splitting resources between tasks, drivers or some other object. This comes in handy when drivers, such as USB drivers, need to allocate memory and when using splittable data structures such as heapless::spsc::Queue . In the following example two different tasks share a heapless::spsc::Queue for lock-free access to the shared queue. //! examples/static.rs #![deny(unsafe_code)]\n#![deny(warnings)]\n#![deny(missing_docs)]\n#![no_main]\n#![no_std] use panic_semihosting as _; #[rtic::app(device = lm3s6965, dispatchers = [UART0])]\nmod app { use cortex_m_semihosting::{debug, hprintln}; use heapless::spsc::{Consumer, Producer, Queue}; #[shared] struct Shared {} #[local] struct Local { p: Producer<'static, u32, 5>, c: Consumer<'static, u32, 5>, } #[init(local = [q: Queue