Struct magenta::EventPair

pub struct EventPair(_);

An object representing a Magenta event pair.

As essentially a subtype of Handle, it can be freely interconverted.

Methods

impl EventPair

fn create(options: EventPairOpts) -> Result<(EventPair, EventPair), Status>

Create an event pair, a pair of objects which can signal each other. Wraps the mx_eventpair_create syscall.

Trait Implementations

impl Debug for EventPair

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Eq for EventPair

impl PartialEq for EventPair

fn eq(&self, __arg_0: &EventPair) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &EventPair) -> bool

This method tests for !=.

impl AsHandleRef for EventPair

fn as_handle_ref(&self) -> HandleRef

Get a reference to the handle. One important use of such a reference is for object_wait_many.

fn raw_handle(&self) -> mx_handle_t

Interpret the reference as a raw handle (an integer type). Two distinct handles will have different raw values (so it can perhaps be used as a key in a data structure).

fn signal_handle(
    &self,
    clear_mask: Signals,
    set_mask: Signals
) -> Result<(), Status>

Set and clear userspace-accessible signal bits on an object. Wraps the mx_object_signal syscall.

fn wait_handle(
    &self,
    signals: Signals,
    deadline: mx_time_t
) -> Result<Signals, Status>

Waits on a handle. Wraps the mx_object_wait_one syscall.

fn wait_async_handle(
    &self,
    port: &Port,
    key: u64,
    signals: Signals,
    options: WaitAsyncOpts
) -> Result<(), Status>

Causes packet delivery on the given port when the object changes state and matches signals. mx_object_wait_async syscall.

impl From<Handle> for EventPair

fn from(handle: Handle) -> Self

Performs the conversion.

impl Into<Handle> for EventPair

fn into(self) -> Handle

Performs the conversion.

impl HandleBased for EventPair

fn duplicate_handle(&self, rights: Rights) -> Result<Self, Status>

Duplicate a handle, possibly reducing the rights available. Wraps the mx_handle_duplicate syscall.

fn replace_handle(self, rights: Rights) -> Result<Self, Status>

Create a replacement for a handle, possibly reducing the rights available. This invalidates the original handle. Wraps the mx_handle_replace syscall.

impl Peered for EventPair

fn signal_peer(
    &self,
    clear_mask: Signals,
    set_mask: Signals
) -> Result<(), Status>

Set and clear userspace-accessible signal bits on the object's peer. Wraps the mx_object_signal_peer syscall.

impl Cookied for EventPair

fn get_cookie(&self, scope: &HandleRef) -> Result<u64, Status>

Get the cookie attached to this object, if any. Wraps the mx_object_get_cookie syscall.

fn set_cookie(&self, scope: &HandleRef, cookie: u64) -> Result<(), Status>

Attach an opaque cookie to this object with the given scope. The cookie may be read or changed in future only with the same scope. Wraps the mx_object_set_cookie syscall.