TimelineTask class Null safety

An asynchronous task on the timeline. An asynchronous task can have many (nested) synchronous operations. Synchronous operations can live longer than the current isolate event. To pass a TimelineTask to another isolate, you must first call pass to get the task id and then construct a new TimelineTask in the other isolate.


TimelineTask({TimelineTask? parent, String? filterKey})
Create a task. The task ID will be set by the system.
TimelineTask.withTaskId(int taskId, {String? filterKey})
Create a task with an explicit taskId. This is useful if you are passing a task from one isolate to another.


hashCode int
The hash code for this object.
runtimeType Type
A representation of the runtime type of the object.


finish({Map? arguments}) → void
Finish the last synchronous operation that was started. Optionally takes a Map of arguments.
instant(String name, {Map? arguments}) → void
Emit an instant event for this task. Optionally takes a Map of arguments.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
pass() int
Retrieve the TimelineTask's task id. Will throw an exception if the stack is not empty.
start(String name, {Map? arguments}) → void
Start a synchronous operation within this task named name. Optionally takes a Map of arguments.
toString() String
A string representation of this object.


operator ==(Object other) bool
The equality operator.