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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef GPU_COMMAND_BUFFER_CLIENT_MAPPED_MEMORY_H_ | 5 #ifndef GPU_COMMAND_BUFFER_CLIENT_MAPPED_MEMORY_H_ |
| 6 #define GPU_COMMAND_BUFFER_CLIENT_MAPPED_MEMORY_H_ | 6 #define GPU_COMMAND_BUFFER_CLIENT_MAPPED_MEMORY_H_ |
| 7 | 7 |
| 8 #include <vector> | 8 #include <vector> |
| 9 | 9 |
| 10 #include "../../gpu_export.h" |
| 10 #include "../common/types.h" | 11 #include "../common/types.h" |
| 11 #include "../client/fenced_allocator.h" | 12 #include "../client/fenced_allocator.h" |
| 12 #include "../common/buffer.h" | 13 #include "../common/buffer.h" |
| 13 | 14 |
| 14 namespace gpu { | 15 namespace gpu { |
| 15 | 16 |
| 16 class CommandBufferHelper; | 17 class CommandBufferHelper; |
| 17 | 18 |
| 18 // Manages a shared memory segment. | 19 // Manages a shared memory segment. |
| 19 class MemoryChunk { | 20 class GPU_EXPORT MemoryChunk { |
| 20 public: | 21 public: |
| 21 MemoryChunk(int32 shm_id, gpu::Buffer shm, CommandBufferHelper* helper); | 22 MemoryChunk(int32 shm_id, gpu::Buffer shm, CommandBufferHelper* helper); |
| 22 | 23 |
| 23 // Gets the size of the largest free block that is available without waiting. | 24 // Gets the size of the largest free block that is available without waiting. |
| 24 unsigned int GetLargestFreeSizeWithoutWaiting() { | 25 unsigned int GetLargestFreeSizeWithoutWaiting() { |
| 25 return allocator_.GetLargestFreeSize(); | 26 return allocator_.GetLargestFreeSize(); |
| 26 } | 27 } |
| 27 | 28 |
| 28 // Gets the size of the largest free block that can be allocated if the | 29 // Gets the size of the largest free block that can be allocated if the |
| 29 // caller can wait. | 30 // caller can wait. |
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| 97 | 98 |
| 98 private: | 99 private: |
| 99 int32 shm_id_; | 100 int32 shm_id_; |
| 100 gpu::Buffer shm_; | 101 gpu::Buffer shm_; |
| 101 FencedAllocatorWrapper allocator_; | 102 FencedAllocatorWrapper allocator_; |
| 102 | 103 |
| 103 DISALLOW_COPY_AND_ASSIGN(MemoryChunk); | 104 DISALLOW_COPY_AND_ASSIGN(MemoryChunk); |
| 104 }; | 105 }; |
| 105 | 106 |
| 106 // Manages MemoryChucks. | 107 // Manages MemoryChucks. |
| 107 class MappedMemoryManager { | 108 class GPU_EXPORT MappedMemoryManager { |
| 108 public: | 109 public: |
| 109 explicit MappedMemoryManager(CommandBufferHelper* helper); | 110 explicit MappedMemoryManager(CommandBufferHelper* helper); |
| 110 | 111 |
| 111 ~MappedMemoryManager(); | 112 ~MappedMemoryManager(); |
| 112 | 113 |
| 113 unsigned int chunk_size_multiple() const { | 114 unsigned int chunk_size_multiple() const { |
| 114 return chunk_size_multiple_; | 115 return chunk_size_multiple_; |
| 115 } | 116 } |
| 116 | 117 |
| 117 void set_chunk_size_multiple(unsigned int multiple) { | 118 void set_chunk_size_multiple(unsigned int multiple) { |
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| 158 CommandBufferHelper* helper_; | 159 CommandBufferHelper* helper_; |
| 159 MemoryChunkVector chunks_; | 160 MemoryChunkVector chunks_; |
| 160 | 161 |
| 161 DISALLOW_COPY_AND_ASSIGN(MappedMemoryManager); | 162 DISALLOW_COPY_AND_ASSIGN(MappedMemoryManager); |
| 162 }; | 163 }; |
| 163 | 164 |
| 164 } // namespace gpu | 165 } // namespace gpu |
| 165 | 166 |
| 166 #endif // GPU_COMMAND_BUFFER_CLIENT_MAPPED_MEMORY_H_ | 167 #endif // GPU_COMMAND_BUFFER_CLIENT_MAPPED_MEMORY_H_ |
| 167 | 168 |
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