dart:developer

Timeline class

Add to the timeline.

Timeline's methods add synchronous events to the timeline. When generating a timeline in Chrome's tracing format, using Timeline generates "Complete" events. Timeline's startSync and finishSync can be used explicitly, or implicitly by wrapping a closure in timeSync. For example:

Timeline.startSync("Doing Something");
doSomething();
Timeline.finishSync();

Or:

Timeline.timeSync("Doing Something", () {
  doSomething();
});

Constructors

Timeline()

Properties

hashCode → int

read-only, inherited

The hash code for this object. [...]

runtimeType → Type

read-only, inherited

A representation of the runtime type of the object.

Methods

noSuchMethod(Invocation invocation) → dynamic

inherited

Invoked when a non-existent method or property is accessed. [...]

toString() → String

inherited

A string representation of this object. [...]

Operators

operator ==(Object other) → bool

inherited

The equality operator. [...]

Static Properties

now → int

read-only

The current time stamp from the clock used by the timeline. Units are microseconds. [...]

Static Methods

finishSync() → void

Finish the last synchronous operation that was started.

instantSync(String name, {Map? arguments}) → void

Emit an instant event.

startSync(String name, {Map? arguments, Flow? flow}) → void

Start a synchronous operation labeled name. Optionally takes a Map of arguments. This slice may also optionally be associated with a Flow event. This operation must be finished before returning to the event queue.

timeSync<T>(String name, TimelineSyncFunction<T> function, {Map? arguments, Flow? flow}) → T

A utility method to time a synchronous function. Internally calls function bracketed by calls to startSync and finishSync.