virtual ~RenderProcessImpl();
// RenderProcess implementation.
- virtual SkCanvas* GetDrawingCanvas(
- TransportDIB** memory,
- const gfx::Rect& rect) OVERRIDE;
- virtual void ReleaseTransportDIB(TransportDIB* memory) OVERRIDE;
virtual void AddBindings(int bindings) OVERRIDE;
virtual int GetEnabledBindings() const OVERRIDE;
- virtual TransportDIB* CreateTransportDIB(size_t size) OVERRIDE;
- virtual void FreeTransportDIB(TransportDIB*) OVERRIDE;
private:
- // Look in the shared memory cache for a suitable object to reuse.
- // result: (output) the memory found
- // size: the resulting memory will be >= this size, in bytes
- // returns: false if a suitable DIB memory could not be found
- bool GetTransportDIBFromCache(TransportDIB** result, size_t size);
-
- // Maybe put the given shared memory into the shared memory cache. Returns
- // true if the SharedMemory object was stored in the cache; otherwise, false
- // is returned.
- bool PutSharedMemInCache(TransportDIB* memory);
-
- void ClearTransportDIBCache();
-
- // Return the index of a free cache slot in which to install a transport DIB
- // of the given size. If all entries in the cache are larger than the given
- // size, this doesn't free any slots and returns -1.
- int FindFreeCacheSlot(size_t size);
-
- // A very simplistic and small cache. If an entry in this array is non-null,
- // then it points to a SharedMemory object that is available for reuse.
- TransportDIB* shared_mem_cache_[2];
-
- // This DelayTimer cleans up our cache 5 seconds after the last use.
- base::DelayTimer<RenderProcessImpl> shared_mem_cache_cleaner_;
-
- // TransportDIB sequence number
- uint32 transport_dib_next_sequence_number_;
-
// Bitwise-ORed set of extra bindings that have been enabled anywhere in this
// process. See BindingsPolicy for details.
int enabled_bindings_;