Enum grpc_cq_polling_type

#[repr(u32)]
pub enum grpc_cq_polling_type {
    GRPC_CQ_DEFAULT_POLLING = 0,
    GRPC_CQ_NON_LISTENING = 1,
    GRPC_CQ_NON_POLLING = 2,
}

Completion queues internally MAY maintain a set of file descriptors in a structure called ‘pollset’. This enum specifies if a completion queue has an associated pollset and any restrictions on the type of file descriptors that can be present in the pollset.

I/O progress can only be made when grpc_completion_queue_next() or grpc_completion_queue_pluck() are called on the completion queue (unless the grpc_cq_polling_type is GRPC_CQ_NON_POLLING) and hence it is very important to actively call these APIs

Variants

GRPC_CQ_DEFAULT_POLLING = 0

The completion queue will have an associated pollset and there is no restriction on the type of file descriptors the pollset may contain

GRPC_CQ_NON_LISTENING = 1

Similar to GRPC_CQ_DEFAULT_POLLING except that the completion queues will not contain any ‘listening file descriptors’ (i.e file descriptors used to listen to incoming channels)

GRPC_CQ_NON_POLLING = 2

The completion queue will not have an associated pollset. Note that grpc_completion_queue_next() or grpc_completion_queue_pluck() MUST still be called to pop events from the completion queue; it is not required to call them actively to make I/O progress

Trait Implementations

impl Clone for grpc_cq_polling_type

fn clone(&self) -> grpc_cq_polling_type

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for grpc_cq_polling_type

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

Formats the value using the given formatter.

impl Hash for grpc_cq_polling_type

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for grpc_cq_polling_type

fn eq(&self, other: &grpc_cq_polling_type) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for grpc_cq_polling_type

impl Eq for grpc_cq_polling_type

impl StructuralPartialEq for grpc_cq_polling_type