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Side by Side Diff: gpu/command_buffer/client/transfer_buffer.h

Issue 2535213002: [WIP] Add SharedMemoryTracker to dump base::SharedMemory usage
Patch Set: (rebase) Created 3 years, 7 months ago
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1 // Copyright (c) 2012 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_TRANSFER_BUFFER_H_ 5 #ifndef GPU_COMMAND_BUFFER_CLIENT_TRANSFER_BUFFER_H_
6 #define GPU_COMMAND_BUFFER_CLIENT_TRANSFER_BUFFER_H_ 6 #define GPU_COMMAND_BUFFER_CLIENT_TRANSFER_BUFFER_H_
7 7
8 #include <stddef.h> 8 #include <stddef.h>
9 #include <stdint.h> 9 #include <stdint.h>
10 10
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52 52
53 virtual RingBuffer::Offset GetOffset(void* pointer) const = 0; 53 virtual RingBuffer::Offset GetOffset(void* pointer) const = 0;
54 54
55 virtual void DiscardBlock(void* p) = 0; 55 virtual void DiscardBlock(void* p) = 0;
56 56
57 virtual void FreePendingToken(void* p, unsigned int token) = 0; 57 virtual void FreePendingToken(void* p, unsigned int token) = 0;
58 58
59 virtual unsigned int GetSize() const = 0; 59 virtual unsigned int GetSize() const = 0;
60 60
61 virtual unsigned int GetFreeSize() const = 0; 61 virtual unsigned int GetFreeSize() const = 0;
62
63 virtual base::SharedMemory* GetSharedMemory() const = 0;
62 }; 64 };
63 65
64 // Class that manages the transfer buffer. 66 // Class that manages the transfer buffer.
65 class GPU_EXPORT TransferBuffer : public TransferBufferInterface { 67 class GPU_EXPORT TransferBuffer : public TransferBufferInterface {
66 public: 68 public:
67 TransferBuffer(CommandBufferHelper* helper); 69 TransferBuffer(CommandBufferHelper* helper);
68 ~TransferBuffer() override; 70 ~TransferBuffer() override;
69 71
70 // Overridden from TransferBufferInterface. 72 // Overridden from TransferBufferInterface.
71 bool Initialize(unsigned int default_buffer_size, 73 bool Initialize(unsigned int default_buffer_size,
72 unsigned int result_size, 74 unsigned int result_size,
73 unsigned int min_buffer_size, 75 unsigned int min_buffer_size,
74 unsigned int max_buffer_size, 76 unsigned int max_buffer_size,
75 unsigned int alignment, 77 unsigned int alignment,
76 unsigned int size_to_flush) override; 78 unsigned int size_to_flush) override;
77 int GetShmId() override; 79 int GetShmId() override;
78 void* GetResultBuffer() override; 80 void* GetResultBuffer() override;
79 int GetResultOffset() override; 81 int GetResultOffset() override;
80 void Free() override; 82 void Free() override;
81 bool HaveBuffer() const override; 83 bool HaveBuffer() const override;
82 void* AllocUpTo(unsigned int size, unsigned int* size_allocated) override; 84 void* AllocUpTo(unsigned int size, unsigned int* size_allocated) override;
83 void* Alloc(unsigned int size) override; 85 void* Alloc(unsigned int size) override;
84 RingBuffer::Offset GetOffset(void* pointer) const override; 86 RingBuffer::Offset GetOffset(void* pointer) const override;
85 void DiscardBlock(void* p) override; 87 void DiscardBlock(void* p) override;
86 void FreePendingToken(void* p, unsigned int token) override; 88 void FreePendingToken(void* p, unsigned int token) override;
87 unsigned int GetSize() const override; 89 unsigned int GetSize() const override;
88 unsigned int GetFreeSize() const override; 90 unsigned int GetFreeSize() const override;
91 base::SharedMemory* GetSharedMemory() const override;
89 92
90 // These are for testing. 93 // These are for testing.
91 unsigned int GetCurrentMaxAllocationWithoutRealloc() const; 94 unsigned int GetCurrentMaxAllocationWithoutRealloc() const;
92 unsigned int GetMaxAllocation() const; 95 unsigned int GetMaxAllocation() const;
93 96
94 private: 97 private:
95 // Tries to reallocate the ring buffer if it's not large enough for size. 98 // Tries to reallocate the ring buffer if it's not large enough for size.
96 void ReallocateRingBuffer(unsigned int size); 99 void ReallocateRingBuffer(unsigned int size);
97 100
98 void AllocateRingBuffer(unsigned int size); 101 void AllocateRingBuffer(unsigned int size);
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212 } 215 }
213 216
214 unsigned int num_elements() const { 217 unsigned int num_elements() const {
215 return size() / sizeof(T); 218 return size() / sizeof(T);
216 } 219 }
217 }; 220 };
218 221
219 } // namespace gpu 222 } // namespace gpu
220 223
221 #endif // GPU_COMMAND_BUFFER_CLIENT_TRANSFER_BUFFER_H_ 224 #endif // GPU_COMMAND_BUFFER_CLIENT_TRANSFER_BUFFER_H_
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