Zig 0.17.0-dev (Split by item)

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sq_ring_needs_enter

Returns true if we are not using an SQ thread (thus nobody submits but us), or if IORING_SQ_NEED_WAKEUP is set and the SQ thread must be explicitly awakened. For the latter case, we set the SQ thread wakeup flag. Matches the implementation of sq_ring_needs_enter() in liburing.

IoUring.sq_ring_needs_enter

pub fn sq_ring_needs_enter(self: *IoUring, flags: *u32) bool

File

lib/std/os/linux/IoUring.zig:242

Code

pub fn sq_ring_needs_enter(self: *IoUring, flags: *u32) bool {
    assert(flags.* == 0);
    if ((self.flags & linux.IORING_SETUP_SQPOLL) == 0) return true;
    if ((@atomicLoad(u32, self.sq.flags, .unordered) & linux.IORING_SQ_NEED_WAKEUP) != 0) {
        flags.* |= linux.IORING_ENTER_SQ_WAKEUP;
        return true;
    }
    return false;
}