Struct Performance 

#[repr(C)]
pub(crate) struct Performance {
    eventtarget: EventTarget,
    buffer: DomRefCell<PerformanceEntryList>,
    observers: DomRefCell<Vec<PerformanceObserver>>,
    pending_notification_observers_task: Cell<bool>,
    time_origin: CrossProcessInstant,
    resource_timing_buffer_size_limit: Cell<usize>,
    resource_timing_buffer_current_size: Cell<usize>,
    resource_timing_buffer_pending_full_event: Cell<bool>,
    resource_timing_secondary_entries: DomRefCell<VecDeque<DomRoot<PerformanceEntry>>>,
}

Fields

eventtarget: EventTarget

buffer: DomRefCell<PerformanceEntryList>

observers: DomRefCell<Vec<PerformanceObserver>>

pending_notification_observers_task: Cell<bool>

time_origin: CrossProcessInstant

The timeOrigin as described in https://html.spec.whatwg.org/multipage/#concept-settings-object-time-origin.

resource_timing_buffer_size_limit: Cell<usize>

https://w3c.github.io/performance-timeline/#dfn-maxbuffersize The max-size of the buffer, set to 0 once the pipeline exits. TODO: have one max-size per entry type.

resource_timing_buffer_current_size: Cell<usize>

resource_timing_buffer_pending_full_event: Cell<bool>

resource_timing_secondary_entries: DomRefCell<VecDeque<DomRoot<PerformanceEntry>>>

Implementations

impl Performance

fn __assert_parent_type(&self)

impl Performance

fn new_inherited(time_origin: CrossProcessInstant) -> Performance

pub(crate) fn new( global: &GlobalScope, navigation_start: CrossProcessInstant, can_gc: CanGc, ) -> DomRoot<Performance>

pub(crate) fn to_dom_high_res_time_stamp( &self, instant: CrossProcessInstant, ) -> DOMHighResTimeStamp

pub(crate) fn maybe_to_dom_high_res_time_stamp( &self, instant: Option<CrossProcessInstant>, ) -> DOMHighResTimeStamp

pub(crate) fn clear_and_disable_performance_entry_buffer(&self)

Clear all buffered performance entries, and disable the buffer. Called as part of the window’s “clear_js_runtime” workflow, performed when exiting a pipeline.

pub(crate) fn add_multiple_type_observer( &self, observer: &DOMPerformanceObserver, entry_types: Vec<EntryType>, )

pub(crate) fn add_single_type_observer( &self, observer: &DOMPerformanceObserver, entry_type: EntryType, buffered: bool, )

pub(crate) fn remove_observer(&self, observer: &DOMPerformanceObserver)

Remove a PerformanceObserver from the list of observers.

pub(crate) fn queue_entry(&self, entry: &PerformanceEntry) -> Option<usize>

Queue a notification for each performance observer interested in this type of performance entry and queue a low priority task to notify the observers if no other notification task is already queued.

Algorithm spec: https://w3c.github.io/performance-timeline/#queue-a-performanceentry Also this algorithm has been extented according to : https://w3c.github.io/resource-timing/#sec-extensions-performance-interface

pub(crate) fn notify_observers(&self)

Observers notifications task.

Algorithm spec (step 7): https://w3c.github.io/performance-timeline/#queue-a-performanceentry

fn can_add_resource_timing_entry(&self) -> bool

fn copy_secondary_resource_timing_buffer(&self)

https://w3c.github.io/resource-timing/#dfn-copy-secondary-buffer

fn fire_buffer_full_event(&self, can_gc: CanGc)

https://w3c.github.io/resource-timing/#sec-extensions-performance-interface

fn should_queue_resource_entry(&self, entry: &PerformanceEntry) -> bool

https://w3c.github.io/resource-timing/#dfn-add-a-performanceresourcetiming-entry

pub(crate) fn update_entry(&self, index: usize, entry: &PerformanceEntry)

Trait Implementations

impl Castable for Performance

fn is<T>(&self) -> bool

where T: DerivedFrom<Self>,

Check whether a DOM object implements one of its deriving interfaces.

fn upcast<T>(&self) -> &T

where T: Castable, Self: DerivedFrom<T>,

Cast a DOM object upwards to one of the interfaces it derives from.

fn downcast<T>(&self) -> Option<&T>

where T: DerivedFrom<Self>,

Cast a DOM object downwards to one of the interfaces it might implement.

impl DomObject for Performance

type ReflectorType = ()

fn reflector(&self) -> &Reflector<Self::ReflectorType>

Returns the receiver’s reflector.

impl DomObjectWrap<DomTypeHolder> for Performance

const WRAP: unsafe fn(&mut JSContext, &GlobalScope, Option<HandleObject<'_>>, Box<Self>) -> Root<Dom<Self>> = {script_bindings::codegen::GenericBindings::PerformanceBinding::Wrap::<dom::bindings::codegen::DomTypeHolder::DomTypeHolder> as for<'a, 'b, 'c> unsafe fn(&'a mut js::context::JSContext, &'b dom::globalscope::GlobalScope, std::option::Option<js::rust::Handle<'c, *mut js::jsapi::JSObject>>, std::boxed::Box<dom::performance::performance::Performance>) -> script_bindings::root::Root<script_bindings::root::Dom<dom::performance::performance::Performance>>}

Function pointer to the general wrap function type

impl Drop for Performance

fn drop(&mut self)

Executes the destructor for this type.

impl HasParent for Performance

fn as_parent(&self) -> &EventTarget

This is used in a type assertion to ensure that the source and webidls agree as to what the parent type is

type Parent = EventTarget

impl IDLInterface for Performance

fn derives(class: &'static DOMClass) -> bool

Returns whether the given DOM class derives that interface.

impl MallocSizeOf for Performance

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.

impl MutDomObject for Performance

unsafe fn init_reflector<Actual>(&self, obj: *mut JSObject)

Initializes the Reflector

impl PartialEq for Performance

fn eq(&self, other: &Self) -> 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 PerformanceMethods<DomTypeHolder> for Performance

fn Timing(&self) -> DomRoot<PerformanceNavigationTiming>

https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/NavigationTiming/Overview.html#performance-timing-attribute

fn Navigation(&self) -> DomRoot<PerformanceNavigation>

https://w3c.github.io/navigation-timing/#dom-performance-navigation

fn Now(&self) -> DOMHighResTimeStamp

https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/HighResolutionTime/Overview.html#dom-performance-now

fn TimeOrigin(&self) -> DOMHighResTimeStamp

https://www.w3.org/TR/hr-time-2/#dom-performance-timeorigin

fn GetEntries(&self) -> Vec<DomRoot<PerformanceEntry>>

https://www.w3.org/TR/performance-timeline-2/#dom-performance-getentries

fn GetEntriesByType( &self, entry_type: DOMString, ) -> Vec<DomRoot<PerformanceEntry>>

https://www.w3.org/TR/performance-timeline-2/#dom-performance-getentriesbytype

fn GetEntriesByName( &self, name: DOMString, entry_type: Option<DOMString>, ) -> Vec<DomRoot<PerformanceEntry>>

https://www.w3.org/TR/performance-timeline-2/#dom-performance-getentriesbyname

fn Mark(&self, mark_name: DOMString) -> Fallible<()>

https://w3c.github.io/user-timing/#dom-performance-mark

fn ClearMarks(&self, mark_name: Option<DOMString>)

https://w3c.github.io/user-timing/#dom-performance-clearmarks

fn Measure( &self, measure_name: DOMString, start_mark: Option<DOMString>, end_mark: Option<DOMString>, ) -> Fallible<()>

https://w3c.github.io/user-timing/#dom-performance-measure

fn ClearMeasures(&self, measure_name: Option<DOMString>)

https://w3c.github.io/user-timing/#dom-performance-clearmeasures

fn ClearResourceTimings(&self)

https://w3c.github.io/resource-timing/#dom-performance-clearresourcetimings

fn SetResourceTimingBufferSize(&self, max_size: u32)

https://w3c.github.io/resource-timing/#dom-performance-setresourcetimingbuffersize

fn GetOnresourcetimingbufferfull( &self, ) -> Option<Rc<EventHandlerNonNull<DomTypeHolder>>>

fn SetOnresourcetimingbufferfull( &self, listener: Option<Rc<EventHandlerNonNull<DomTypeHolder>>>, )

impl ToJSValConvertible for Performance

unsafe fn to_jsval(&self, cx: *mut JSContext, rval: MutableHandleValue<'_>)

Convert self to a JSVal. JSAPI failure causes a panic.

fn safe_to_jsval(&self, cx: &mut JSContext, rval: MutableHandle<'_, Value>)

Convert self to a JSVal. JSAPI failure causes a panic.

impl Traceable for Performance

unsafe fn trace(&self, tracer: *mut JSTracer)

Trace self.

impl DerivedFrom<EventTarget> for Performance

impl Eq for Performance