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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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 MOJO_PUBLIC_CPP_BINDINGS_LIB_FIXED_BUFFER_H_ | 5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_FIXED_BUFFER_H_ |
6 #define MOJO_PUBLIC_CPP_BINDINGS_LIB_FIXED_BUFFER_H_ | 6 #define MOJO_PUBLIC_CPP_BINDINGS_LIB_FIXED_BUFFER_H_ |
7 | 7 |
8 #include "mojo/public/cpp/bindings/lib/buffer.h" | 8 #include "mojo/public/cpp/bindings/lib/buffer.h" |
9 #include "mojo/public/cpp/system/macros.h" | 9 #include "mojo/public/cpp/system/macros.h" |
10 | 10 |
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36 // } | 36 // } |
37 // | 37 // |
38 class FixedBuffer : public Buffer { | 38 class FixedBuffer : public Buffer { |
39 public: | 39 public: |
40 explicit FixedBuffer(size_t size); | 40 explicit FixedBuffer(size_t size); |
41 virtual ~FixedBuffer(); | 41 virtual ~FixedBuffer(); |
42 | 42 |
43 // Grows the buffer by |num_bytes| and returns a pointer to the start of the | 43 // Grows the buffer by |num_bytes| and returns a pointer to the start of the |
44 // addition. The resulting address is 8-byte aligned, and the content of the | 44 // addition. The resulting address is 8-byte aligned, and the content of the |
45 // memory is zero-filled. | 45 // memory is zero-filled. |
46 virtual void* Allocate(size_t num_bytes) MOJO_OVERRIDE; | 46 virtual void* Allocate(size_t num_bytes) override; |
47 | 47 |
48 size_t size() const { return size_; } | 48 size_t size() const { return size_; } |
49 | 49 |
50 // Returns the internal memory owned by the Buffer to the caller. The Buffer | 50 // Returns the internal memory owned by the Buffer to the caller. The Buffer |
51 // relinquishes its pointer, effectively resetting the state of the Buffer | 51 // relinquishes its pointer, effectively resetting the state of the Buffer |
52 // and leaving the caller responsible for freeing the returned memory address | 52 // and leaving the caller responsible for freeing the returned memory address |
53 // when no longer needed. | 53 // when no longer needed. |
54 void* Leak(); | 54 void* Leak(); |
55 | 55 |
56 private: | 56 private: |
57 char* ptr_; | 57 char* ptr_; |
58 size_t cursor_; | 58 size_t cursor_; |
59 size_t size_; | 59 size_t size_; |
60 | 60 |
61 MOJO_DISALLOW_COPY_AND_ASSIGN(FixedBuffer); | 61 MOJO_DISALLOW_COPY_AND_ASSIGN(FixedBuffer); |
62 }; | 62 }; |
63 | 63 |
64 } // namespace internal | 64 } // namespace internal |
65 } // namespace mojo | 65 } // namespace mojo |
66 | 66 |
67 #endif // MOJO_PUBLIC_CPP_BINDINGS_LIB_FIXED_BUFFER_H_ | 67 #endif // MOJO_PUBLIC_CPP_BINDINGS_LIB_FIXED_BUFFER_H_ |
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