Function core::arch::riscv64::wfi

source · []
pub unsafe fn wfi()
🔬 This is a nightly-only experimental API. (stdsimd #48556)
Available on RISC-V RV64 only.
Expand description

Generates the WFI instruction

The WFI instruction provides a hint to the implementation that the current hart can be stalled until an interrupt might need servicing. This instruction is a hint, and a legal implementation is to simply implement WFI as a NOP.