Issue I am aware of the fact that when both microtask and event queues of an isolate are empty, the isolate is killed. However, I’m not able to find a reference on the documentation of how a worker isolate can
Continue readingTag: dart-isolates
Dart Error: Dart_LookupLibrary: library 'package:background_fetch/background_fetch.dart' not found
Issue How can I solve this problem: E/flutter (18287): [ERROR:flutter/shell/common/shell.cc(89)] Dart Error: Dart_LookupLibrary: library ‘package:background_fetch/background_fetch.dart’ not found. E/flutter (18287): [ERROR:flutter/runtime/dart_isolate.cc(668)] Could not resolve main entrypoint function. E/flutter (18287): [ERROR:flutter/runtime/dart_isolate.cc(168)] Could not run the run main Dart entrypoint. E/flutter (18287): [ERROR:flutter/runtime/runtime_controller.cc(389)]
Continue readingHow to spawn an async function in Flutter?
Issue How an I spawn an Isolate blocking on an async function in Flutter? I tried dart:cli‘s waitFor function, but it seems that dart:cli does not work together with Flutter. Solution There is no supported way to block on an
Continue readingSet a callback accessible from an isolate in flutter
Issue I’m trying to achieve the following: I’m using a top level background handler for firebase notifications. However I would like to add an optional callback to the main app isolate. The objective is to trigger some UI refresh depending
Continue readingHow to stop playing a sound initiated in AlarmManager in Flutter
Issue I’m currently writing an alarm clock app in Flutter and need to be able to start playing a custom sound at a specific time, even without the app currently running. I’ve already been able to achieve this with the
Continue readingHow to break up Dart Isolate code to avoid blocking the event queue?
Issue I am writing a test program to explore the use of Isolates in Dart/Flutter. One type of isolate that I have is started and stopped using a switch on a Flutter UI. This sends a message (START and STOP)
Continue readingHow to call a platform code from an isolate in flutter?
Issue I know these libraries flutter_isolate and isolate_handler exist that support doing these but I couldn’t find any method to call platform specific codes from inside of them. Can someone show any example of how it’s done ? Solution My
Continue readingIllegal argument in isolate message: (object is a ReceivePort)
Issue I was trying to write my own worker to process big amount of numbers. And decided to make always working Isolate in which all my data would be processed. class ProjectionWorker { … Isolate? _isolate; ReceivePort? _workerPort; Stream? _workerResultStream;
Continue readingMultiple Isolates vs one Isolate
Issue How isolates are distributed across CPU cores In Dart, you can run multiple isolates at the same time, and I haven’t been able to find a guideline or best practice for using isolates. My question is how will overall
Continue readingMessage Order in dart isolates
Issue If you use actors in Scala you don’t know if the messages arrive in order that you send them, does isolates in dart enshure that its messages gets received in the order you send them? Solution Interesting question. I
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