RelativeFrameTimeHistogram Class
Definition
Important
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A histogram of frame times relative to their deadline.
[Android.Runtime.Register("android/app/jank/RelativeFrameTimeHistogram", ApiSince=36, DoNotGenerateAcw=true)]
public class RelativeFrameTimeHistogram : Java.Lang.Object[<Android.Runtime.Register("android/app/jank/RelativeFrameTimeHistogram", ApiSince=36, DoNotGenerateAcw=true)>]
type RelativeFrameTimeHistogram = class
inherit Object- Inheritance
- Attributes
Remarks
A histogram of frame times relative to their deadline.
This class aids in reporting AppJankStats to the system and is designed for use by library widgets. It facilitates the recording of frame times in relation to the frame deadline. The class records the distribution of time remaining until a frame is considered janky or how janky the frame was.
A frame's relative frame time value indicates whether it was delivered early, on time, or late. A negative relative frame time value indicates the frame was delivered early, a value of zero indicates the frame was delivered on time and a positive value indicates the frame was delivered late. The values of the endpoints indicate how early or late a frame was delivered.
The relative frame times are recorded as a histogram: values are #addRelativeFrameTimeMillis added to a bucket by increasing the bucket's counter. The count of frames with a relative frame time between #getBucketEndpointsMillis bucket endpointsi and i+1 can be obtained through index i of #getBucketCounters.
Java documentation for android.app.jank.RelativeFrameTimeHistogram.
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
Constructors
| Name | Description |
|---|---|
| RelativeFrameTimeHistogram() |
Create a new instance of RelativeFrameTimeHistogram. |
| RelativeFrameTimeHistogram(IntPtr, JniHandleOwnership) |
Creates a managed instance that represents an existing Java object. |
Properties
| Name | Description |
|---|---|
| Class |
Returns the runtime class of this |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| JniIdentityHashCode |
Gets the identity hash code assigned to this Java peer by the interop runtime. (Inherited from Object) |
| JniManagedPeerState |
Gets the state flags last assigned by the runtime. (Inherited from JavaObject) |
| JniPeerMembers |
Gets the JNI metadata used to access members of this Java binding. |
| PeerReference |
Gets the JNI object reference for this Java peer. (Inherited from Object) |
| ThresholdClass |
Gets the Java class used for virtual method dispatch. |
| ThresholdType |
Gets the managed type that declares this Java binding. |
Methods
| Name | Description |
|---|---|
| AddRelativeFrameTimeMillis(Int32) |
Increases the count by one for the bucket representing the relative frame time. |
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Construct(JniObjectReference, JniObjectReferenceOptions) |
Delegates construction of this peer to the runtime's value manager. (Inherited from JavaObject) |
| Dispose() |
Releases the resources held by this Java peer. (Inherited from Object) |
| Dispose(Boolean) |
Releases the resources held by this Java peer. (Inherited from Object) |
| DisposeUnlessReferenced() |
Asks the value manager to dispose this peer unless its mapping retains this same managed instance. (Inherited from JavaObject) |
| Equals(Object) |
Tests whether another managed peer refers to the same Java object. (Inherited from JavaObject) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| GetBucketCounters() |
Returns the counts for the all the relative frame time buckets. |
| GetBucketEndpointsMillis() |
Returns the relative frame time endpoints for the histogram. |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| JavaFinalize() |
Obsolete.
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object) |
| Notify() |
Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object) |
| NotifyAll() |
Wakes up all threads that are waiting on this object's monitor. (Inherited from Object) |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| SetPeerReference(JniObjectReference, JniObjectReferenceOptions) |
Stores a reference value in the control block without creating a JNI reference copy. (Inherited from JavaObject) |
| ToArray<T>() |
Creates a managed array from this Java array wrapper. (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| UnregisterFromRuntime() |
Unregisters this Java peer from the interop runtime. (Inherited from Object) |
| Wait() |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object) |
| Wait(Int64, Int32) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
| Wait(Int64) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
Explicit Interface Implementations
| Name | Description |
|---|---|
| IJavaPeerable.Disposed() |
Marks this peer as disposed and calls |
| IJavaPeerable.Finalized() |
Marks this peer as disposed and calls |
| IJavaPeerable.JniObjectReferenceControlBlock |
Gets the native control-block pointer used by this peer. (Inherited from JavaObject) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) |
Stores the identity hash code supplied by the runtime. (Inherited from JavaObject) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) |
Replaces the stored managed peer state flags. (Inherited from JavaObject) |
| IJavaPeerable.SetPeerReference(JniObjectReference) |
Updates the peer reference and releases a disposed peer's control block when the reference is invalid. (Inherited from JavaObject) |
Extension Methods
| Name | Description |
|---|---|
| GetJniTypeName(IJavaPeerable) |
Gets the JNI name of the type of the instance |
| JavaAs<TResult>(IJavaPeerable) |
Try to coerce |
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) |
Reuses a compatible managed peer or obtains a wrapper of the requested type. |
| TryJavaCast<TResult>(IJavaPeerable, TResult) |
Try to coerce |