TwoQDirtyPage Class Reference

TwoQDirtyPage is the attribute class that contains information about dirty pages. More...

#include <TwoQVictimPolicy.h>

Inheritance diagram for TwoQDirtyPage:

List of all members.

Public Types
enum	DirtyPageState { PAGE_CLEAN, PAGE_DIRTY_POPULAR_UNPINNED, PAGE_DIRTY_FRESHMAN, PAGE_DIRTY_POPULAR_PINNED }
	Enumeration indicating whether a page is dirty and if so, which queue the dirty page is in. More...
Public Member Functions
void	setParentPage (CachePage &parentPageInit)
	Sets the parent page corresponding to the dirty object.
CachePage &	getParentPage ()
	Returns: the parent page corresponding to the dirty object
DirtyPageState	getDirtyState ()
	Returns: dirty state of a page
void	setDirtyState (DirtyPageState newState)
	Sets a page's dirty state.
IntrusiveDListNode *	getNext () const
IntrusiveDListNode *	getPrev () const
void	detach ()
void	insertBefore (IntrusiveDListNode &newNext)
void	insertAfter (IntrusiveDListNode &newPrev)
Private Attributes
CachePage *	pParentPage
	Pointer to the parent page corresponding to this dirty object.
DirtyPageState	dirtyState
	The state of the dirty page.

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Detailed Description

TwoQDirtyPage is the attribute class that contains information about dirty pages.

Objects representing dirty pages are linked together in doubly-linked lists with back pointers to the dirty parent pages. The lists are subsets of the full 2Q page queues, as they consist of only the dirty pages.

Definition at line 203 of file TwoQVictimPolicy.h.

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Member Enumeration Documentation

enum TwoQDirtyPage::DirtyPageState

Enumeration indicating whether a page is dirty and if so, which queue the dirty page is in.

Enumerator:

PAGE_CLEAN	Page is not dirty.
PAGE_DIRTY_POPULAR_UNPINNED	Page is dirty and in the popular-unpinned queue.
PAGE_DIRTY_FRESHMAN	Page is dirty and in the freshmen queue.
PAGE_DIRTY_POPULAR_PINNED	Page is dirty and currently in the popular-pinned queue.

Definition at line 211 of file TwoQVictimPolicy.h.

                        {
        PAGE_CLEAN,

        PAGE_DIRTY_POPULAR_UNPINNED,

        PAGE_DIRTY_FRESHMAN,

        PAGE_DIRTY_POPULAR_PINNED
    };

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Member Function Documentation

void TwoQDirtyPage::setParentPage

(

CachePage &

parentPageInit

)

[inline]

Sets the parent page corresponding to the dirty object.

Parameters:

parentPageInit

the parent page

Definition at line 250 of file TwoQVictimPolicy.h.

    {
        pParentPage = &parentPageInit;
    }

CachePage& TwoQDirtyPage::getParentPage

(

)

[inline]

Returns:

the parent page corresponding to the dirty object

Definition at line 258 of file TwoQVictimPolicy.h.

Referenced by TwoQDirtyPageListIter< PageT >::getReturnElement().

    {
        return *pParentPage;
    }

DirtyPageState TwoQDirtyPage::getDirtyState

(

)

[inline]

Returns:

dirty state of a page

Definition at line 266 of file TwoQVictimPolicy.h.

Referenced by TwoQVictimPolicy< PageT >::notifyPageClean(), TwoQVictimPolicy< PageT >::notifyPageDirty(), TwoQVictimPolicy< PageT >::notifyPageNice(), TwoQVictimPolicy< PageT >::notifyPageUnmap(), TwoQVictimPolicy< PageT >::notifyPageUnpin(), and TwoQVictimPolicy< PageT >::notifyPopularPageAccess().

    {
        return dirtyState;
    }

void TwoQDirtyPage::setDirtyState

(

DirtyPageState

newState

)

[inline]

Sets a page's dirty state.

Parameters:

newState

the new dirty state value for a page

Definition at line 276 of file TwoQVictimPolicy.h.

Referenced by TwoQVictimPolicy< PageT >::notifyPageClean(), TwoQVictimPolicy< PageT >::notifyPageDirty(), TwoQVictimPolicy< PageT >::notifyPageUnmap(), TwoQVictimPolicy< PageT >::notifyPageUnpin(), and TwoQVictimPolicy< PageT >::notifyPopularPageAccess().

    {
        dirtyState = newState;
    }

IntrusiveDListNode* IntrusiveDListNode::getNext

(

)

const [inline, inherited]

Definition at line 45 of file IntrusiveDList.h.

Referenced by TwoQPageQueue::moveToTail(), TwoQPageQueue::remove(), and TwoQPageQueue::validateQueue().

    {
        return pNext;
    }

IntrusiveDListNode* IntrusiveDListNode::getPrev

(

)

const [inline, inherited]

Definition at line 50 of file IntrusiveDList.h.

Referenced by TwoQPageQueue::moveToHead(), TwoQPageQueue::remove(), and TwoQPageQueue::validateQueue().

    {
        return pPrev;
    }

void IntrusiveDListNode::detach

(

)

[inline, inherited]

Definition at line 55 of file IntrusiveDList.h.

Referenced by TwoQPageQueue::moveToHead(), TwoQPageQueue::moveToTail(), and TwoQPageQueue::remove().

    {
        if (pNext) {
            pNext->pPrev = pPrev;
        }
        if (pPrev) {
            pPrev->pNext = pNext;
        }
        pPrev = pNext = NULL;
    }

void IntrusiveDListNode::insertBefore

(

IntrusiveDListNode &

newNext

)

[inline, inherited]

Definition at line 66 of file IntrusiveDList.h.

References IntrusiveDListNode::pNext, and IntrusiveDListNode::pPrev.

Referenced by TwoQPageQueue::insertAtHead(), and TwoQPageQueue::moveToHead().

    {
        pNext = &newNext;
        pPrev = pNext->pPrev;
        pNext->pPrev = this;
        if (pPrev) {
            pPrev->pNext = this;
        }
    }

void IntrusiveDListNode::insertAfter

(

IntrusiveDListNode &

newPrev

)

[inline, inherited]

Definition at line 76 of file IntrusiveDList.h.

References IntrusiveDListNode::pNext, and IntrusiveDListNode::pPrev.

Referenced by TwoQPageQueue::insertAtTail(), and TwoQPageQueue::moveToTail().

    {
        pPrev = &newPrev;
        pNext = pPrev->pNext;
        pPrev->pNext = this;
        if (pNext) {
            pNext->pPrev = this;
        }
    }

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Member Data Documentation

CachePage* TwoQDirtyPage::pParentPage [private]

Pointer to the parent page corresponding to this dirty object.

Definition at line 237 of file TwoQVictimPolicy.h.

DirtyPageState TwoQDirtyPage::dirtyState [private]

The state of the dirty page.

Definition at line 242 of file TwoQVictimPolicy.h.

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

• /home/pub/open/dev/fennel/cache/TwoQVictimPolicy.h

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