Binder IPC
The Binder IPC mechanism allows the application framework to cross process boundaries and call into the Android system services code. This enables high-level framework APIs to interact with Android system services. An Android application usually runs in its own process space. It doesn't have the ability to access system resources or the underlying hardware directly. It has to talk to system services through Binder IPC to access the system resource. Since applications and system services run in different processes, the Binder IPC provides a mechanism for this purpose.
The Binder IPC proxies are the channel by which the application framework can access system services in different process spaces. It does not mean it is a layer between ...
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