oscr::drain_request Struct Reference

Inheritance diagram for oscr::drain_request:

Detailed Description

Whether the reader of a processor to UI channel has a wake-up pending.

The writer calls request() after each write and wakes the reader up (with an execution command) only when it returns true; when the wake-up cannot be sent it calls park(), and what it wrote goes with the next wake-up: the next write's, or the one ui_wakeups::retry() sends on a later tick. The reader calls clear() before it reads, so that a write that it misses wakes it up again.

Public Member Functions
bool	request () noexcept
void	cancel () noexcept
void	clear () noexcept
void	park () noexcept
	Writer's thread: the wake-up could not be sent.
bool	unpark () noexcept
	Writer's thread: whether a wake-up was parked since the last call.

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The documentation for this struct was generated from the following file:

• MessageBus.hpp