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author | Vladimir Glazounov <vg@openoffice.org> | 2009-03-13 15:52:34 +0000 |
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committer | Vladimir Glazounov <vg@openoffice.org> | 2009-03-13 15:52:34 +0000 |
commit | cbedb240486a21c5d5676e7a7f4e2ba17a55dbab (patch) | |
tree | ec2690bb5e5d18df0a9493c54cfac64f9e5ab494 /store/source/storcach.hxx | |
parent | #i10000# missing STORELIB (diff) | |
download | core-cbedb240486a21c5d5676e7a7f4e2ba17a55dbab.tar.gz core-cbedb240486a21c5d5676e7a7f4e2ba17a55dbab.zip |
CWS-TOOLING: integrate CWS mhu17
2009-01-23 14:08:09 +0100 mhu r266816 : CWS-TOOLING: rebase CWS mhu17 to trunk@266428 (milestone: DEV300:m39)
2009-01-16 17:49:37 +0100 mhu r266442 : #i98151# Migration to subversion.
2009-01-16 17:48:53 +0100 mhu r266441 : #i98151# Migration to subversion.
2009-01-16 17:47:56 +0100 mhu r266440 : #i98151# Migration to subversion.
Diffstat (limited to 'store/source/storcach.hxx')
-rw-r--r-- | store/source/storcach.hxx | 179 |
1 files changed, 50 insertions, 129 deletions
diff --git a/store/source/storcach.hxx b/store/source/storcach.hxx index 661343657be5..eb98bb786df5 100644 --- a/store/source/storcach.hxx +++ b/store/source/storcach.hxx @@ -29,158 +29,79 @@ ************************************************************************/ #ifndef _STORE_STORCACH_HXX -#define _STORE_STORCACH_HXX "$Revision: 1.6 $" +#define _STORE_STORCACH_HXX "$Revision: 1.6.8.2 $" -#include <sal/types.h> -#include <osl/mutex.hxx> -#include <store/types.h> +#include "sal/types.h" +#include "rtl/ref.hxx" -#ifndef INCLUDED_CSTDDEF -#include <cstddef> -#define INCLUDED_CSTDDEF -#endif +#include "store/types.h" +#include "storbase.hxx" namespace store { -struct OStorePageDescriptor; -struct OStorePageData; -class OStorePageBIOS; - /*======================================================================== * - * OStorePageCache interface. - * (OStorePageData in external representation) + * PageCache interface. * *======================================================================*/ -#define STORE_LIMIT_CACHEPAGES 256 -#define STORE_DEFAULT_CACHEPAGES STORE_LIMIT_CACHEPAGES - -struct OStorePageCacheEntry; -class OStorePageCache +class PageCache : public rtl::IReference { - typedef OStorePageCacheEntry entry; - public: - /** Allocation. + /** load. */ - static void * operator new (std::size_t n) SAL_THROW(()); - static void operator delete (void * p, std::size_t) SAL_THROW(()); - - /** Construction. - */ - OStorePageCache ( - sal_uInt16 nPages = STORE_DEFAULT_CACHEPAGES); + storeError lookupPageAt ( + PageHolder & rxPage, + sal_uInt32 nOffset); - /** Destruction. - */ - ~OStorePageCache (void); + /** insert. + */ + storeError insertPageAt ( + PageHolder const & rxPage, + sal_uInt32 nOffset); - /** load. - */ - storeError load ( - const OStorePageDescriptor &rDescr, - OStorePageData &rData, - OStorePageBIOS &rBIOS, - osl::Mutex *pMutex = NULL); - - /** update. - */ - enum UpdateMode - { - UPDATE_WRITE_THROUGH = 0, - UPDATE_WRITE_DELAYED = 1 - }; - - storeError update ( - const OStorePageDescriptor &rDescr, - const OStorePageData &rData, - OStorePageBIOS &rBIOS, - osl::Mutex *pMutex = NULL, - UpdateMode eMode = UPDATE_WRITE_THROUGH); - - /** invalidate. - */ - storeError invalidate ( - const OStorePageDescriptor &rDescr, - osl::Mutex *pMutex = NULL); - - /** flush. - */ - storeError flush ( - OStorePageBIOS &rBIOS, - osl::Mutex *pMutex = NULL); - - /** hitRatio [nHit / (nHit + nMissed)]. + /** update, or insert. */ - inline double hitRatio (void) const; + storeError updatePageAt ( + PageHolder const & rxPage, + sal_uInt32 nOffset); - /** usageRatio [nUsed / nSize]. - */ - inline double usageRatio (void) const; + /** remove (invalidate). + */ + storeError removePageAt ( + sal_uInt32 nOffset); private: - /** Representation. - */ - sal_uInt16 m_nSize; - sal_uInt16 m_nUsed; - entry *m_pData[STORE_LIMIT_CACHEPAGES]; - entry *m_pHead; - - sal_uInt32 m_nHit; - sal_uInt32 m_nMissed; - sal_uInt32 m_nUpdHit; - sal_uInt32 m_nUpdLRU; - sal_uInt32 m_nWrtBack; - - /** Implementation. - */ - sal_uInt16 find (const OStorePageDescriptor &rDescr) const; - void move (sal_uInt16 nSI, sal_uInt16 nDI); + /** Implementation (abstract). + */ + virtual storeError lookupPageAt_Impl ( + PageHolder & rxPage, + sal_uInt32 nOffset) = 0; - /** insert. - */ - enum InsertMode - { - INSERT_CLEAN = 0, - INSERT_DIRTY = 1 - }; - - storeError insert ( - sal_uInt16 nIndex, - const OStorePageDescriptor &rDescr, - const OStorePageData &rData, - OStorePageBIOS &rBIOS, - InsertMode eMode = INSERT_CLEAN); - - /** Not implemented. - */ - OStorePageCache (const OStorePageCache& rOther); - OStorePageCache& operator= (const OStorePageCache& rOther); + virtual storeError insertPageAt_Impl ( + PageHolder const & rxPage, + sal_uInt32 nOffset) = 0; + + virtual storeError updatePageAt_Impl ( + PageHolder const & rxPage, + sal_uInt32 nOffset) = 0; + + virtual storeError removePageAt_Impl ( + sal_uInt32 nOffset) = 0; }; -/* - * hitRatio [nHit / (nHit + nMissed)]. - */ -inline double OStorePageCache::hitRatio (void) const -{ - if (m_nHit || m_nMissed) - return ((double)m_nHit / (double)(m_nHit + m_nMissed)); - else - return 1.0; -} - -/* - * usageRatio [nUsed / nSize]. - */ -inline double OStorePageCache::usageRatio (void) const -{ - if (m_nUsed < m_nSize) - return ((double)m_nUsed / (double)m_nSize); - else - return 1.0; -} +/*======================================================================== + * + * PageCache factory. + * + *======================================================================*/ + +storeError +PageCache_createInstance ( + rtl::Reference< store::PageCache > & rxCache, + sal_uInt16 nPageSize +); /*======================================================================== * |