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Inside the Android AccountManager
The Android AccountManager uses the Binder IPC mechanism to facilitate communication between the AccountManager client and AccountManagerService. When an application requests an account operation through the AccountManager, it results in asynchronous Binder calls to the AccountManagerService, with responses returned via callback interfaces. Authenticators are also contacted asynchronously via Binder calls when additional authentication is needed.
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Inside the Android AccountManager
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- 5. Account Manager Account Manager Service Authenticator Integrated App HTC Account Zoe,Backup, … system_server
- 6. Application Process Account Manager Account Manager Service Authenticator Integrated App HTCAccount Zoe, Backup, … system_server
- 7. Application Process Account Manager Account Manager Service Authenticator Integrated App HTCAccount Zoe, Backup, … Method Invocation system_server
- 8. Application Process Account Manager Account Manager Service Authenticator Integrated App HTCAccount Zoe, Backup, … Binder IPC Method Invocation system_server
- 9. Application Process Account Manager Account Manager Service Authenticator Integrated App HTCAccount Zoe, Backup, … Binder IPC Binder IPC Method Invocation system_server
- 10. http://www.nds.rub.de/media/attachments/files/2012/03/binder.pdf Binder Native IPC mechanism onAndroid. Implemented as kernel driver and the Binder framework.
- 11. http://www.nds.rub.de/media/attachments/files/2012/03/binder.pdf Binder Binder client usesa proxy approach. Native IPC mechanism on Android. Implemented as kernel driver and the Binder framework.
- 12. http://www.nds.rub.de/media/attachments/files/2012/03/binder.pdf Binder The transaction datais called Parcel. Java objects implementing Paracelable interface can be converted to Parcels. Transaction data limit is around 1MB. Native IPC mechanism on Android. Implemented as kernel driver and the Binder framework.
- 13. http://www.nds.rub.de/media/attachments/files/2012/03/binder.pdf Binder Binder server spawnsbinder threads to handle the incoming requests automatically. Native IPC mechanism on Android. Implemented as kernel driver and the Binder framework.
- 14. Android Interface Definition Language(AIDL) • To make customized Binder interface. • Default supported data types include primitives, String, CharSequence, List, Map. • Non-primitive type parameters require in / out or inout tag. • Custom data types must implement Parcelable, and declare a corresponding AIDL file. http://developer.android.com/guide/components/aidl.html
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- 22. AccountManagerService (binder server side)initialization. frameworks/base/core/java/android/accounts/ AccountManagerService.java
- 23. AccountManagerService (binder server side)initialization. frameworks/base/core/java/android/accounts/ AccountManagerService.java
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- 26. Simplified addAccount() Binder IPCBinder IPC
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- 37. Application Process Account Manager Account Manager Service Authenticator Integrated App AsynchronizedBinder IPC call through interface IAccountManager; Response returned through interface IAccountManagerResponse
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- 42. AbstractAccountAuthenticator (binder server side)initialization. frameworks/base/core/java/android/accounts/ AbstractAccountAuthenticator.java
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- 45. Application Process Account Manager Account Manager Service Authenticator Integrated App AsynchronizedBinder IPC call through interface IAccountAuthenticator; Response returned through interface IAccountAuthenticatorResponse