Function core::arch::arm::__wfi [−][src]
pub unsafe fn __wfi()This is supported on ARM and (target feature
v6 or AArch64 or doc) only.Expand description
Generates a WFI (wait for interrupt) hint instruction, or nothing.
The WFI instruction allows (but does not require) the processor to enter a low-power state until one of a number of asynchronous events occurs.