pw_work_queue

Overview

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Classes
class	pw::work_queue::CustomWorkQueue< WorkItem >
class	pw::work_queue::WorkQueue
struct	pw::work_queue::internal::Storage< WorkItem, kWorkQueueEntries >
class	pw::work_queue::CustomWorkQueueWithBuffer< kWorkQueueEntries, WorkItem >
class	pw::work_queue::WorkQueueWithBuffer< kWorkQueueEntries >

Functions
	pw::work_queue::CustomWorkQueue< WorkItem >::CustomWorkQueue (InlineQueue< WorkItem > &queue, pw::Function< void(WorkItem &)> &&fn)
Status	pw::work_queue::CustomWorkQueue< WorkItem >::PushWork (WorkItem &&work_item)
void	pw::work_queue::CustomWorkQueue< WorkItem >::CheckPushWork (WorkItem &&work_item)
void	pw::work_queue::CustomWorkQueue< WorkItem >::CheckPushWork (WorkItem &work_item)
void	pw::work_queue::CustomWorkQueue< WorkItem >::RequestStop ()
	pw::work_queue::WorkQueue::WorkQueue (InlineQueue< Closure > &queue)
constexpr	pw::work_queue::CustomWorkQueueWithBuffer< kWorkQueueEntries, WorkItem >::CustomWorkQueueWithBuffer (pw::Function< void(WorkItem &)> &&fn)

Variables
InlineQueue< WorkItem, kWorkQueueEntries >	pw::work_queue::internal::Storage< WorkItem, kWorkQueueEntries >::queue

Function Documentation

CheckPushWork()

template<typename WorkItem >

void pw::work_queue::CustomWorkQueue< WorkItem >::CheckPushWork ( WorkItem &&  work_item )

inline

Queues work for execution. Crashes if the work cannot be queued due to a full queue or a stopped worker thread.

This call is recommended where possible since it saves error handling code at the callsite; and in many practical cases, it is a bug if the work queue is full (and so a crash is useful to detect the problem).

Parameters

[in]

work_item

The entry to enqueue.

Precondition

• The queue must not overflow, i.e. be full.
• The queue must not have been requested to stop, i.e. it must not be in the process of shutting down.

CustomWorkQueue()

template<typename WorkItem >

pw::work_queue::CustomWorkQueue< WorkItem >::CustomWorkQueue ( InlineQueue< WorkItem > &  queue, pw::Function< void(WorkItem &)> &&  fn  )

inline

Parameters

[in]	queue	The work entries to enqueue.
[in]	fn	The function to invoke on each enqueued WorkItem

Note

The ThreadNotification prevents this from being constexpr.

CustomWorkQueueWithBuffer()

template<size_t kWorkQueueEntries, typename WorkItem >

constexpr pw::work_queue::CustomWorkQueueWithBuffer< kWorkQueueEntries, WorkItem >::CustomWorkQueueWithBuffer ( pw::Function< void(WorkItem &)> &&  fn )

inlineconstexpr

Parameters

[in]

fn

The function to invoke on each enqueued WorkItem

PushWork()

template<typename WorkItem >

Status pw::work_queue::CustomWorkQueue< WorkItem >::PushWork ( WorkItem &&  work_item )

inline

Enqueues a work_item for execution by the work queue thread.

Parameters

[in]

work_item

The entry to enqueue.

Returns

• OK: Entry was enqueued for execution.
• FAILED_PRECONDITION: The work queue is shutting down. Entries are no longer permitted.
• RESOURCE_EXHAUSTED: Internal work queue is full. Entry was not enqueued.

RequestStop()

template<typename WorkItem >

void pw::work_queue::CustomWorkQueue< WorkItem >::RequestStop ( )

inline

Locks the queue to prevent further work enqueing, finishes outstanding work, then shuts down the worker thread.

The WorkQueue cannot be resumed after stopping because the ThreadCore thread returns and may be joined. The WorkQueue must be reconstructed for re-use after the thread has been joined.

WorkQueue()

pw::work_queue::WorkQueue::WorkQueue ( InlineQueue< Closure > &  queue )

inline

Parameters

[in]

queue

The work entries to enqueue.