The window manager and lower-level surface compositor talk with each This is aĬommon use of the capability model of the binder, where secureĬonnections are given to clients which they can use for communication To create a new binder connection dedicated to that client. When a client starts up, it does a binder IPC into the window manager The window manager and clients talk with each other through Binder. Happens across processes in the core platform. In the Android platform, the binder is used for nearly everything that Honestly I haven't been following it for the last 3 or so years soĭon't really know its current state of art. I won't try to address other options, especially D-Bus, because I can give a summary of howīinder is used in the Android platform and the associated feature set. > we need to have some better and more specific information about it (or > IPC, it's totally generic, and it's not part of a standard (i.e. > interface like this just slips into the kernel as a driver. > Most of these questions related to the fact that I don't think an (I hope that Daniel and Dianne are OK with this.) managing the lifespan of proxied remoted userspace objects that can be shared and passed between processes (upon which the userspace binder library builds its remote reference counting model).avoiding copies by having the kernel copy from the writer into a ring buffer in the reader's address space directly (allocating space if necessary).I believe the two notable properties of the binder that are not present in existing IPC mechanisms in the kernel (that I'm aware of) are: Q: Why does need to be done in the kernel? Couldn't any of the current Linux IPC mechanisms be re-used to accomplish this? Deep Dive into Android IPC/Binder Framework - Aleksandar Gargenta of Marakana presented at Android Builders Summit 2013.Has good, detailed information about Binder (if you plan to work on Binder, consider this a "must read"!) Android Binder - Thesis by Thorsten Schreiber describing Android Binder in detail.Android IPC Mechanism - Another presentation about Android Binder and framework internals, extending Tetsuyuki Kobayashi's materials by Jim Huang of 0xlab.A good overview of binder is in the presentation Inter-process method invocation in Android by Tetsuyuki Kobayashi.- Android Interface Definition Language.- java low-level interface to binder feature.
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