binder

Struct ProcessState

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pub struct ProcessState;
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Static utility functions to manage Binder process state.

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impl ProcessState

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pub fn start_thread_pool()

Starts the Binder IPC thread pool.

Starts 1 thread, plus allows the kernel to lazily start up to num_threads additional threads as specified by set_thread_pool_max_thread_count.

This should be done before creating any Binder client or server. If neither this nor join_thread_pool are called, then some things (such as callbacks and IBinder::link_to_death) will silently not work: the callbacks will be queued but never called as there is no thread to call them on.

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pub fn set_thread_pool_max_thread_count(num_threads: u32)

Sets the maximum number of threads that can be started in the threadpool.

By default, after start_thread_pool is called, this is 15. If it is called additional times, the thread pool size can only be increased.

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pub fn join_thread_pool()

Blocks on the Binder IPC thread pool by adding the current thread to the pool.

Note that this adds the current thread in addition to those that are created by set_thread_pool_max_thread_count and start_thread_pool.

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