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.
Constructors
- 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.
Properties
- hashCode → int
-
The hash code for this object.
read-only, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Methods
-
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.
inherited
-
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 ofarguments. -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited