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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34536 a95241bf-73f2-0310-859d-f6bbb57e9c96
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Ingo Weinhold
parent
be7328a9f6
commit
6440406a59
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@ -57,109 +57,110 @@ typedef IteratableSplayTree<VMCachePagesTreeDefinition> VMCachePagesTree;
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struct VMCache {
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public:
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VMCache();
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virtual ~VMCache();
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VMCache();
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virtual ~VMCache();
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status_t Init(uint32 cacheType);
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status_t Init(uint32 cacheType);
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virtual void Delete();
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virtual void Delete();
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bool Lock()
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{ return mutex_lock(&fLock) == B_OK; }
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bool TryLock()
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{ return mutex_trylock(&fLock) == B_OK; }
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bool SwitchLock(mutex* from)
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{ return mutex_switch_lock(from, &fLock)
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== B_OK; }
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void Unlock();
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void AssertLocked()
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{ ASSERT_LOCKED_MUTEX(&fLock); }
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bool Lock()
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{ return mutex_lock(&fLock) == B_OK; }
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bool TryLock()
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{ return mutex_trylock(&fLock) == B_OK; }
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bool SwitchLock(mutex* from)
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{ return mutex_switch_lock(from, &fLock)
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== B_OK; }
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void Unlock();
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void AssertLocked()
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{ ASSERT_LOCKED_MUTEX(&fLock); }
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void AcquireRefLocked();
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void AcquireRef();
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void ReleaseRefLocked();
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void ReleaseRef();
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void ReleaseRefAndUnlock()
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{ ReleaseRefLocked(); Unlock(); }
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void AcquireRefLocked();
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void AcquireRef();
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void ReleaseRefLocked();
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void ReleaseRef();
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void ReleaseRefAndUnlock()
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{ ReleaseRefLocked(); Unlock(); }
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vm_page* LookupPage(off_t offset);
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void InsertPage(vm_page* page, off_t offset);
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void RemovePage(vm_page* page);
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vm_page* LookupPage(off_t offset);
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void InsertPage(vm_page* page, off_t offset);
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void RemovePage(vm_page* page);
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void AddConsumer(VMCache* consumer);
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void AddConsumer(VMCache* consumer);
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status_t InsertAreaLocked(VMArea* area);
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status_t RemoveArea(VMArea* area);
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status_t InsertAreaLocked(VMArea* area);
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status_t RemoveArea(VMArea* area);
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status_t WriteModified();
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status_t SetMinimalCommitment(off_t commitment);
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status_t Resize(off_t newSize);
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status_t WriteModified();
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status_t SetMinimalCommitment(off_t commitment);
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status_t Resize(off_t newSize);
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status_t FlushAndRemoveAllPages();
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status_t FlushAndRemoveAllPages();
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// for debugging only
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mutex* GetLock()
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{ return &fLock; }
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int32 RefCount() const
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{ return fRefCount; }
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mutex* GetLock()
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{ return &fLock; }
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int32 RefCount() const
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{ return fRefCount; }
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// backing store operations
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virtual status_t Commit(off_t size);
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virtual bool HasPage(off_t offset);
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virtual status_t Commit(off_t size);
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virtual bool HasPage(off_t offset);
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virtual status_t Read(off_t offset, const iovec *vecs, size_t count,
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uint32 flags, size_t *_numBytes);
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virtual status_t Write(off_t offset, const iovec *vecs, size_t count,
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uint32 flags, size_t *_numBytes);
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virtual status_t WriteAsync(off_t offset, const iovec* vecs,
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size_t count, size_t numBytes, uint32 flags,
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AsyncIOCallback* callback);
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virtual bool CanWritePage(off_t offset);
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virtual status_t Read(off_t offset, const iovec *vecs,
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size_t count,uint32 flags,
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size_t *_numBytes);
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virtual status_t Write(off_t offset, const iovec *vecs, size_t count,
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uint32 flags, size_t *_numBytes);
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virtual status_t WriteAsync(off_t offset, const iovec* vecs,
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size_t count, size_t numBytes, uint32 flags,
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AsyncIOCallback* callback);
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virtual bool CanWritePage(off_t offset);
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virtual int32 MaxPagesPerWrite() const
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{ return -1; } // no restriction
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virtual int32 MaxPagesPerAsyncWrite() const
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{ return -1; } // no restriction
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virtual int32 MaxPagesPerWrite() const
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{ return -1; } // no restriction
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virtual int32 MaxPagesPerAsyncWrite() const
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{ return -1; } // no restriction
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virtual status_t Fault(struct VMAddressSpace *aspace,
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off_t offset);
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virtual status_t Fault(struct VMAddressSpace *aspace,
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off_t offset);
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virtual void Merge(VMCache* source);
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virtual void Merge(VMCache* source);
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virtual status_t AcquireUnreferencedStoreRef();
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virtual void AcquireStoreRef();
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virtual void ReleaseStoreRef();
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private:
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inline bool _IsMergeable() const;
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void _MergeWithOnlyConsumer();
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void _RemoveConsumer(VMCache* consumer);
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virtual status_t AcquireUnreferencedStoreRef();
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virtual void AcquireStoreRef();
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virtual void ReleaseStoreRef();
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public:
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struct VMArea* areas;
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struct list_link consumer_link;
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struct list consumers;
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// list of caches that use this cache as a source
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VMCachePagesTree pages;
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VMCache* source;
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off_t virtual_base;
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off_t virtual_end;
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off_t committed_size;
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// TODO: Remove!
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uint32 page_count;
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uint32 temporary : 1;
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uint32 scan_skip : 1;
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uint32 type : 6;
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VMArea* areas;
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list_link consumer_link;
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list consumers;
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// list of caches that use this cache as a source
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VMCachePagesTree pages;
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VMCache* source;
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off_t virtual_base;
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off_t virtual_end;
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off_t committed_size;
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// TODO: Remove!
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uint32 page_count;
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uint32 temporary : 1;
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uint32 scan_skip : 1;
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uint32 type : 6;
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#if DEBUG_CACHE_LIST
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struct VMCache* debug_previous;
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struct VMCache* debug_next;
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VMCache* debug_previous;
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VMCache* debug_next;
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#endif
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private:
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int32 fRefCount;
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mutex fLock;
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inline bool _IsMergeable() const;
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void _MergeWithOnlyConsumer();
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void _RemoveConsumer(VMCache* consumer);
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private:
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int32 fRefCount;
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mutex fLock;
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};
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