Function futex2_requeue [src]

Wake and/or requeue waiter(s) from one futex to another. Identical to FUTEX.CMP_REQUEUE, except it is part of the futex2 family of calls. Requires at least kernel v6.7.

Prototype

 pub fn futex2_requeue( waiters: [*]const futex2_waitone, flags: FUTEX2_FLAGS_REQUEUE, nr_wake: i32, nr_requeue: i32, ) usize

Parameters

waiters: [*]const futex2_waitoneThe source and destination futexes.  Must be a 2-element array.

flags: FUTEX2_FLAGS_REQUEUECurrently unused.

nr_wake: i32Maximum number of waiters to wake on the source futex.

nr_requeue: i32Maximum number of waiters to transfer to the destination futex.

Source

  pub fn futex2_requeue(
    /// The source and destination futexes.  Must be a 2-element array.
    waiters: [*]const futex2_waitone,
    /// Currently unused.
    flags: FUTEX2_FLAGS_REQUEUE,
    /// Maximum number of waiters to wake on the source futex.
    nr_wake: i32,
    /// Maximum number of waiters to transfer to the destination futex.
    nr_requeue: i32,
) usize {
    return syscall4(
        .futex_requeue,
        @intFromPtr(waiters),
        @as(u32, @bitCast(flags)),
        @as(u32, @bitCast(nr_wake)),
        @as(u32, @bitCast(nr_requeue)),
    );
}  