| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_RENDERER_RENDER_PROCESS_IMPL_H_ |
| #define CONTENT_RENDERER_RENDER_PROCESS_IMPL_H_ |
| |
| #include "base/timer/timer.h" |
| #include "content/renderer/render_process.h" |
| |
| class SkCanvas; |
| |
| namespace content { |
| |
| // Implementation of the RenderProcess interface for the regular browser. |
| // See also MockRenderProcess which implements the active "RenderProcess" when |
| // running under certain unit tests. |
| class RenderProcessImpl : public RenderProcess { |
| public: |
| RenderProcessImpl(); |
| virtual ~RenderProcessImpl(); |
| |
| // RenderProcess implementation. |
| virtual SkCanvas* GetDrawingCanvas( |
| TransportDIB** memory, |
| const gfx::Rect& rect) OVERRIDE; |
| virtual void ReleaseTransportDIB(TransportDIB* memory) OVERRIDE; |
| virtual bool UseInProcessPlugins() const OVERRIDE; |
| virtual void AddBindings(int bindings) OVERRIDE; |
| virtual int GetEnabledBindings() const OVERRIDE; |
| virtual TransportDIB* CreateTransportDIB(size_t size) OVERRIDE; |
| virtual void FreeTransportDIB(TransportDIB*) OVERRIDE; |
| |
| // Like UseInProcessPlugins(), but called before RenderProcess is created |
| // and does not allow overriding by tests. This just checks the command line |
| // each time. |
| static bool InProcessPlugins(); |
| |
| 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_; |
| |
| bool in_process_plugins_; |
| |
| // Bitwise-ORed set of extra bindings that have been enabled anywhere in this |
| // process. See BindingsPolicy for details. |
| int enabled_bindings_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RenderProcessImpl); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_RENDERER_RENDER_PROCESS_IMPL_H_ |