1. Microsoft Build 2016
11/9/2018 8:05 PM
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2. B817
Windows Application Lifecycle From Activation and Suspension to Background Execution, Multitasking and Extended Execution
Chris Cortes and Stefan Wick
Program Managers

3. GREAT USER EXPERIENCE ACROSS ONE BILLION DEVICESPC
Xbox
Surface Hub
Mobile
Devices + IoT
Holographic

4. Basics of the Application Lifecycle Background Activation Multitasking
11/9/2018 8:05 PM
Basics of the Application Lifecycle
Background Activation
Multitasking
Resource Management
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

5. Basics of the Application Lifecycle
11/9/2018 8:05 PM
Basics of the Application Lifecycle
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

6. Application Lifecycle
Build 2014
11/9/2018
Application Lifecycle
Apps can be in 1 of 3 states
Not Running
Running
Suspended
Applications receive callbacks or events on transitions
OnLaunched or OnActivated
Suspending
Resuming
Except: Suspended->NotRunning
Running
Not Running
Suspended
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

7. Daily App Usage Pattern
Build 2014
11/9/2018
Daily App Usage Pattern
Memory Usage
CPU
CPU
OnLaunched
Suspending
Resuming
Suspending
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

8. Background Activation
11/9/2018 8:05 PM
Background Activation
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

9. Triggers Windows 8.1 Windows 10 WP 8.1 SystemTrigger TimeTrigger
Build 2014
11/9/2018
Triggers
SystemTrigger
TimeTrigger
MaintenanceTrigger
DeviceUseTrigger
DeviceServicingTrigger
PushNotificationTrigger
AppointmentStoreNotificationTrigger
ContactStoreNotificationTrigger
BluetoothLEAdvertisementWatcherTrigger
BluetoothLEAdvertisementPublisherTrigger
DeviceWatcherTrigger
ActivitySensorTrigger
SensorDataThresholdTrigger
ToastNotificationHistoryChangedTrigger
ToastNotificationActionTrigger
ApplicationTrigger
MediaProcessingTrigger
SocketActivityTrigger
Windows 8.1
Windows 10
CachedFileUpdaterTrigger
DeviceConnectionChangeTrigger
GattCharacteristicNotificationTrigger
RfcommConnectionTrigger
LocationTrigger
WP 8.1
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

10. Trigger Implementation
11/9/2018 8:05 PM
Trigger Implementation
private void RegisterBackgroundTask() {   var builder = new BackgroundTaskBuilder();
  builder.Name = “New Post Check";
  builder.TaskEntryPoint = "BackgroundTasks.PostCheck";
  var trigger = new TimeTrigger(30, false);
  builder.SetTrigger(trigger);
  IBackgroundTaskRegistration task = builder.Register(); }
public async void Run(IBackgroundTaskInstance taskInstance) {
var deferral = taskInstance.GetDeferral();
try
taskInstance.Canceled += OnCanceled;
var result = await DoWorkAsync(deferral); }
finally {deferral.Complete();}
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

11. Task Lifetime Default Background Tasks Long-Running Background Tasks
Build 2014
11/9/2018
Task Lifetime
Ideal
Terminated
Canceled
Run()
Run()
Run()
Cancel()
Execution Time
Default Background Tasks
Execution time of 25 seconds
Cancel time of 5 seconds
Long-Running Background Tasks
ApplicationTrigger, MaintenanceTrigger,
DeviceUseTrigger, RfCommConnectionTrigger
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

12. Background Task Process
Build 2014
11/9/2018
Background Task Process
Windows 8
Upcoming Release
App Container
app.exe
CoreApplication
BackgroundTask
backgroundtaskhost.exe
App Container
app.exe
OnLaunched()
OnBackground
Activated()
Default Task
Hosted in a separate process
Implement IBackgroundTask
Single Process Model
Work directly in CoreApplication
Less Code, Easier communication
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

13. Demo ContactStoreNotificationTrigger in the Single-Process-Model
Microsoft Build 2016
11/9/2018 8:05 PM
Demo ContactStoreNotificationTrigger in the Single-Process-Model
Stefan Wick
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

14. Three Steps to Background Execution
11/9/2018 8:05 PM
Three Steps to Background Execution
Request Background Access
Background Execution Manager
Inform of User Configuration Needs
Battery Saver and Privacy Settings
Register for Background Activity
BackgroundTaskBuilder.Register()
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

15. Daily App Usage Pattern
Build 2014
11/9/2018
Daily App Usage Pattern
Memory Usage
CPU
CPU
OnLaunched
Suspending
Resuming
Suspending
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

16. 11/9/2018 8:05 PM
Multitasking
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

17. Activity Sponsored Execution
11/9/2018 8:05 PM
Activity Sponsored Execution
Manifest Entry
<Capabilities>
<uap3:Capability Name="backgroundMediaPlayback" />
</Capabilities>
Press Play
var player = new MediaPlayer();
player.Source = MediaSource.CreateFromUri(new Uri("
player.Play();
No Registration Code, No Background Management
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

18. Running State Extension
Build 2014
11/9/2018
Running State Extension
Extended Execution Session
Up to 10 minutes on Battery
Memory Usage
CPU
Activated
Navigate Away
Navigate To
Suspended
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

19. Demo Extended Execution
Microsoft Build 2016
11/9/2018 8:05 PM
Demo Extended Execution
Stefan Wick
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

20. Suspending State Extension
Build 2014
11/9/2018
Suspending State Extension
Extended Session
Up to 10 Minutes
Memory Usage
CPU
Activated
Suspending
Suspended
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

21. SavingData Extended Execution
11/9/2018 8:05 PM
SavingData Extended Execution
private async void OnSuspending(object sender, SuspendingEventArgs e) {
var deferral = e.SuspendingOperation.GetDeferral();
try
using (var session = new ExtendedExecutionSession())
session.Reason = ExtendedExecutionReason.SavingData;
session.Description = "Upload Data";
session.Revoked += session_Revoked;
var result = await session.RequestExtensionAsync();
if (result == ExtendedExecutionResult.Allowed)
var completionTime = await UploadDataAsync(deferral); }
else { await SaveDataLocallyAsync(deferral); }
} finally { deferral.Complete(); }
private async void session_Revoked(object sender, ExtendedExecutionRevokedEventArgs args)
if(args.Reason == ExtendedExecutionRevokedReason.SystemPolicy)
await SaveDataLocally();
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

22. Methods for Background Execution
11/9/2018 8:05 PM
Methods for Background Execution
Triggers
Based on conditions, in process of your choice
Activity Sponsored Execution
Background media activity, Reduced code
Extended Execution
Generic Running and Suspending extension
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

23. Resource Management 11/9/2018 8:05 PM
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

24. Memory Usage Memory Limit Foreground Background Foreground Background
Build 2014
11/9/2018
Memory Usage
Foreground
Background
Foreground
Background
Foreground
Memory Limit
Memory
Activated
Entered
Background
Leaving
Background
Entered
Background
Leaving
Background
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

25. Memory Manager ulong usageLimit = MemoryManager.AppMemoryUsageLimit;
ulong usage = MemoryManager.AppMemoryUsage;
ulong headroom = usageLimit - usage;
MemoryManager.AppMemoryUsageIncreased += OnAppMemoryUsageIncreased;
MemoryManager.AppMemoryUsageDecreased += OnAppMemoryUsageDecreased;
var usageLevel = MemoryManager.AppMemoryUsageLevel;
if(usageLevel == AppMemoryUsageLevel.Low)
;// Doing Well.
else if(usageLevel == AppMemoryUsageLevel.Medium)
else if(usageLevel == AppMemoryUsageLevel.High)
;// Near limit, clear caches and scale down assets.
else if(usageLevel == AppMemoryUsageLevel.OverLimit)
;// Reduce as much as possible to avoid termination.
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

26. Improvements in Upcoming Release
11/9/2018 8:05 PM
Improvements in Upcoming Release
Single Process Model
Background Activation and Execution in App
Activity Sponsored Execution
Media playback activity, Reduced code
Unspecified Extended Execution
No time limit when connected to power or set in Battery Use
Over Memory Limit Notification
Memory Manager callback instead of termination
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

27. GREAT USER EXPERIENCE ACROSS ONE BILLION DEVICESPC
Xbox
Surface Hub
Mobile
Devices +IoT
Holographic

28. Other Sessions
Windows Store: Publishing Apps and Games to Desktop, Mobile, and Xbox at 10:30.
Enterprise Apps and the Windows Store for Business on Channel 9.
App Extensibility: Build an Ecosystem of Apps on Channel 9.
Continue your education at Microsoft Virtual Academy online.

29. Please Complete An Evaluation Form Your input is important!
11/9/2018
Please Complete An Evaluation Form Your input is important! or
© 2016 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

30. 11/9/2018 8:05 PM
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.