tervel::util::OpRecord Class Reference

This class is used to create Operation Records. More...

#include <progress_assurance.h>

Inheritance diagram for tervel::util::OpRecord:

Public Member Functions
	OpRecord ()
virtual void	help_complete ()=0
	Implementations of this function that upon its return the operation described in the OpRecord has been completed. More...
bool	on_watch (std::atomic< void * > *address, void *expected)
	This function is used to achieve a strong watch on an Element. More...
bool	on_is_watched ()
	This function is used to check a strong watch on an Element. More...
void	on_unwatch ()
	This function is used to remove a strong watch on an Element. More...
Public Member Functions inherited from tervel::util::memory::hp::Element
	Element ()
virtual	~Element ()
void	safe_delete (bool no_check=false, ElementList *const element_list=tervel::tl_thread_info->get_hp_element_list())
	This function is used to free a hazard pointer protected object if it is safe to do so OR add it to a list to be freed later. More...

Private Member Functions
	DISALLOW_COPY_AND_ASSIGN (OpRecord)

Detailed Description

This class is used to create Operation Records.

Operation records are designed to allow an arbitary thread to complete some other thread's operation in the event that thread is unable to do so. These objects are HP protected.

Constructor & Destructor Documentation

tervel::util::OpRecord::OpRecord ( )

inline

Member Function Documentation

tervel::util::OpRecord::DISALLOW_COPY_AND_ASSIGN ( OpRecord  )

private

virtual void tervel::util::OpRecord::help_complete ( )

pure virtual

Implementations of this function that upon its return the operation described in the OpRecord has been completed.

As such it must be thread-safe and the extending class must contain all the information necessary to complete the operation.

Implemented in tervel::containers::wf::HashMap< Key, Value, Functor >::ForceExpandOp, tervel::containers::wf::vector::PopOp< T >, tervel::containers::wf::vector::PushOp< T >, tervel::algorithms::wf::mcas::MultiWordCompareAndSwap< T >, tervel::containers::wf::vector::PopWRAOp< T >, tervel::containers::wf::vector::WriteOp< T >, tervel::containers::wf::vector::PushWRAOp< T >, tervel::util::memory::rc::ReadFirstOp, tervel::containers::wf::RingBuffer< T >::EnqueueOp< T >, tervel::containers::wf::vector::ReadOp< T >, and tervel::containers::wf::RingBuffer< T >::DequeueOp< T >.

bool tervel::util::OpRecord::on_is_watched ( )

inlinevirtual

This function is used to check a strong watch on an Element.

Classes wishing to express this should override this function.

Returns

whether or not the element is watched.

Reimplemented from tervel::util::memory::hp::Element.

void tervel::util::OpRecord::on_unwatch ( )

inlinevirtual

This function is used to remove a strong watch on an Element.

Classes wishing to express this should override this function.

Reimplemented from tervel::util::memory::hp::Element.

bool tervel::util::OpRecord::on_watch ( std::atomic< void * > *  address, void *  expected  )

inlinevirtual

This function is used to achieve a strong watch on an Element.

Classes wishing to express this should override this function.

Parameters

address	the expected was load from
expected	the last known value of address

Returns

whether or not the element was succefully watched.

Reimplemented from tervel::util::memory::hp::Element.

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

• tervel/util/progress_assurance.h