pw::async2::CoroOrElseTask Class Reference

#include <coro_or_else_task.h>

Inheritance diagram for pw::async2::CoroOrElseTask:

Public Member Functions
	CoroOrElseTask (Coro< Status > &&coro, pw::Function< void(Status)> &&or_else)
void	SetCoro (Coro< Status > &&coro)
void	SetErrorHandler (pw::Function< void(Status)> &&or_else)
Public Member Functions inherited from pw::async2::Task
	Task (const Task &)=delete
	Task (Task &&)=delete
Task &	operator= (const Task &)=delete
Task &	operator= (Task &&)=delete
Poll	Pend (Context &cx)
bool	IsRegistered () const
void	Deregister ()
void	Destroy ()

Private Member Functions
Poll	DoPend (Context &cx) final

Detailed Description

A Task that delegates to a provided Coro<Status>> and executes an or_else handler function on failure.

Constructor & Destructor Documentation

CoroOrElseTask()

pw::async2::CoroOrElseTask::CoroOrElseTask ( Coro< Status > &&  coro, pw::Function< void(Status)> &&  or_else  )

inline

Create a new Task which runs coro, invoking or_else on any non-OK status.

Member Function Documentation

DoPend()

Poll pw::async2::CoroOrElseTask::DoPend ( Context &  )

inlinefinalprivatevirtual

Attempts to advance this Task to completion.

This method should not perform synchronous waiting, as doing so may block the main Dispatcher loop and prevent other Task s from progressing. Because of this, Task s should not invoke blocking Dispatcher methods such as RunUntilComplete.

Task s should also avoid invoking RunUntilStalled` on their own Dispatcher``.

Returns Ready if complete, or Pending if the Task was not yet able to complete.

If Pending is returned, the Task must ensure it is woken up when it is able to make progress. To do this, Task::Pend must arrange for Waker::Wake to be called, either by storing a copy of the Waker away to be awoken by another system (such as an interrupt handler).

Implements pw::async2::Task.

SetCoro()

void pw::async2::CoroOrElseTask::SetCoro ( Coro< Status > &&  coro )

inline

Non-atomically sets coro.

The task must not be Posted when coro is changed.

SetErrorHandler()

void pw::async2::CoroOrElseTask::SetErrorHandler ( pw::Function< void(Status)> &&  or_else )

inline

Non-atomically sets or_else.

The task must not be Posted when or_else is changed.

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

• pw_async2/public/pw_async2/coro_or_else_task.h