Struct Timer

pub struct Timer<T = MonotonicTimeline>(/* private fields */);

An object representing a Zircon timer, such as the one returned by zx_timer_create.

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

Implementations

impl Timer<MonotonicTimeline>

pub fn create() -> Self

Create a timer, an object that can signal when a specified point on the monotonic clock has been reached. Wraps the zx_timer_create syscall.

Panics

If the kernel reports no memory available to create a timer or the process’ job policy denies timer creation.

impl Timer<BootTimeline>

pub fn create() -> Self

Create a timer, an object that can signal when a specified point on the boot clock has been reached. Wraps the zx_timer_create syscall.

If the timer elapses while the system is suspended it will not wake the system.

Panics

If the kernel reports no memory available to create a timer or the process’ job policy denies timer creation.

impl<T: Timeline> Timer<T>

pub fn set( &self, deadline: Instant<T>, slack: Duration<T, NsUnit>, ) -> Result<(), Status>

Start a one-shot timer that will fire when deadline passes. Wraps the zx_timer_set syscall.

pub fn cancel(&self) -> Result<(), Status>

Cancels a pending timer that was started with set(). Wraps the zx_timer_cancel syscall.

Trait Implementations

impl<T: Timeline> AsHandleRef for Timer<T>

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) -> zx_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 zx_object_signal syscall.

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

Waits on a handle. Wraps the zx_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. zx_object_wait_async syscall.

fn get_name(&self) -> Result<Name, Status>

Get the Property::NAME property for this object.

fn set_name(&self, name: &Name) -> Result<(), Status>

Set the Property::NAME property for this object.

fn basic_info(&self) -> Result<HandleBasicInfo, Status>

Wraps the zx_object_get_info syscall for the ZX_INFO_HANDLE_BASIC topic.

fn count_info(&self) -> Result<HandleCountInfo, Status>

Wraps the zx_object_get_info syscall for the ZX_INFO_HANDLE_COUNT topic.

fn get_koid(&self) -> Result<Koid, Status>

Returns the koid (kernel object ID) for this handle.

impl<T: Debug> Debug for Timer<T>

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

Formats the value using the given formatter.

impl<T: Timeline> From<Handle> for Timer<T>

fn from(handle: Handle) -> Self

Converts to this type from the input type.

impl<T: Timeline> From<Timer<T>> for Handle

fn from(x: Timer<T>) -> Handle

Converts to this type from the input type.

impl<T: Timeline> HandleBased for Timer<T>

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

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

fn into_handle(self) -> Handle

Converts the value into its inner handle.

fn into_raw(self) -> zx_handle_t

Converts the handle into it’s raw representation.

fn from_handle(handle: Handle) -> Self

Creates an instance of this type from a handle.

fn into_handle_based<H: HandleBased>(self) -> H

Creates an instance of another handle-based type from this value’s inner handle.

fn from_handle_based<H: HandleBased>(h: H) -> Self

Creates an instance of this type from the inner handle of another handle-based type.

fn is_invalid_handle(&self) -> bool

impl<T: Hash> Hash for Timer<T>

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<T: Ord> Ord for Timer<T>

fn cmp(&self, other: &Timer<T>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<T: PartialEq> PartialEq for Timer<T>

fn eq(&self, other: &Timer<T>) -> 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<T: PartialOrd> PartialOrd for Timer<T>

fn partial_cmp(&self, other: &Timer<T>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T: Eq> Eq for Timer<T>

impl<T> StructuralPartialEq for Timer<T>