1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef GPU_COMMAND_BUFFER_CLIENT_GPU_MEMORY_BUFFER_MANAGER_H_
6 #define GPU_COMMAND_BUFFER_CLIENT_GPU_MEMORY_BUFFER_MANAGER_H_
7 
8 #include <memory>
9 
10 #include "gpu/gpu_export.h"
11 #include "gpu/ipc/common/surface_handle.h"
12 #include "ui/gfx/geometry/size.h"
13 #include "ui/gfx/gpu_memory_buffer.h"
14 
15 namespace gpu {
16 
17 struct SyncToken;
18 
19 class GPU_EXPORT GpuMemoryBufferManager {
20  public:
21   GpuMemoryBufferManager();
22   virtual ~GpuMemoryBufferManager();
23 
24   // Creates a GpuMemoryBuffer that can be shared with another process. It can
25   // be called on any thread.
26   virtual std::unique_ptr<gfx::GpuMemoryBuffer> CreateGpuMemoryBuffer(
27       const gfx::Size& size,
28       gfx::BufferFormat format,
29       gfx::BufferUsage usage,
30       gpu::SurfaceHandle surface_handle) = 0;
31 
32   // Associates destruction sync point with |buffer|. It can be called on any
33   // thread.
34   virtual void SetDestructionSyncToken(gfx::GpuMemoryBuffer* buffer,
35                                        const gpu::SyncToken& sync_token) = 0;
36 
37  protected:
38   class GPU_EXPORT AllocatedBufferInfo {
39    public:
40     AllocatedBufferInfo(const gfx::GpuMemoryBufferHandle& handle,
41                         const gfx::Size& size,
42                         gfx::BufferFormat format);
43     ~AllocatedBufferInfo();
44 
type()45     gfx::GpuMemoryBufferType type() const { return type_; }
46 
47     // Add a memory dump for this buffer to |pmd|. Returns false if adding the
48     // dump failed.
49     bool OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd,
50                       int client_id,
51                       uint64_t client_tracing_process_id) const;
52 
53    private:
54     gfx::GpuMemoryBufferId buffer_id_;
55     gfx::GpuMemoryBufferType type_;
56     size_t size_in_bytes_;
57     base::UnguessableToken shared_memory_guid_;
58   };
59 };
60 
61 }  // namespace gpu
62 
63 #endif  // GPU_COMMAND_BUFFER_CLIENT_GPU_MEMORY_BUFFER_MANAGER_H_
64