Struct io_uring::opcode::FutexWait

pub struct FutexWait { /* private fields */ }

Wait on a futex, like but not equivalant to futex(2)’s FUTEX_WAIT_BITSET.

Wait on a futex at address futex and which still has the value val and with futex2(2) flags of futex_flags. musk can be set to a specific bitset mask, which will be matched by the waking side to decide who to wake up. To always get woken, an application may use FUTEX_BITSET_MATCH_ANY (truncated to futex bits). futex_flags follows the futex2(2) flags, not the futex(2) v1 interface flags. flags are currently unused and hence 0 must be passed.

Implementations

impl FutexWait

pub fn new(futex: *const u32, val: u64, mask: u64, futex_flags: u32) -> Self

pub const CODE: u8 = 51u8

The opcode of the operation. This can be passed to Probe::is_supported to check if this operation is supported with the current kernel.

pub const fn flags(self, flags: u32) -> Self

pub fn build(self) -> Entry

Trait Implementations

impl Debug for FutexWait

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.