Struct Resource

pub struct Resource(/* private fields */);

An object representing a Zircon resource.

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

Implementations

impl Resource

pub fn create_child( &self, kind: ResourceKind, flags: Option<ResourceFlag>, base: u64, size: usize, name: &[u8], ) -> Result<Resource, Status>

Create a child resource object.

Wraps the zx_resource_create syscall

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

Wraps the zx_object_get_info syscall for the ZX_INFO_RESOURCE topic.

pub fn cpu_stats(&self) -> Result<Vec<PerCpuStats>, Status>

Wraps the zx_object_get_info syscall for the ZX_INFO_CPU_STATS topic.

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

Wraps the zx_object_get_info syscall for the ZX_INFO_KMEM_STATS topic.

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

Wraps the zx_object_get_info syscall for the ZX_INFO_KMEM_STATS_EXTENDED topic.

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

Wraps the zx_object_get_info syscall for the ZX_INFO_KMEM_STATS_COMPRESSION topic.

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

Wraps the zx_object_get_info syscall for the ZX_INFO_MEMORY_STALL topic.

pub fn watch_memory_stall( &self, kind: MemoryStallKind, threshold: Duration<MonotonicTimeline>, window: Duration<MonotonicTimeline>, ) -> Result<Event, Status>

Retrieve an event that becomes signaled if the memory stall level exceeds a given threshold over a time window.

Wraps the zx_system_watch_memory_stall syscall

Trait Implementations

impl AsHandleRef for Resource

fn as_handle_ref(&self) -> Unowned<'_, Handle>

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

fn raw_handle(&self) -> u32

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: Instant<MonotonicTimeline>, ) -> 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 Debug for Resource

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

Formats the value using the given formatter.

impl From<Handle> for Resource

fn from(handle: Handle) -> Resource

Converts to this type from the input type.

impl From<Resource> for Handle

fn from(x: Resource) -> Handle

Converts to this type from the input type.

impl HandleBased for Resource

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) -> u32

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>(self) -> H

where H: HandleBased,

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

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

where H: HandleBased,

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

fn is_invalid_handle(&self) -> bool

impl Hash for Resource

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

where __H: Hasher,

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 Ord for Resource

fn cmp(&self, other: &Resource) -> 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 PartialEq for Resource

fn eq(&self, other: &Resource) -> 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 PartialOrd for Resource

fn partial_cmp(&self, other: &Resource) -> 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 TakeFrom<WireHandle> for Resource

fn take_from(from: &WireHandle) -> Resource

Converts from the given T, taking any resources that can’t be cloned.

const COPY_OPTIMIZATION: CopyOptimization<Self> = _

An optimization flag that allows the bytes of this type to be copied directly during conversion instead of calling take_from.

impl Eq for Resource

impl StructuralPartialEq for Resource