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1 // Copyright 2016 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 MOJO_PUBLIC_C_BINDINGS_ARRAY_H_ | |
6 #define MOJO_PUBLIC_C_BINDINGS_ARRAY_H_ | |
7 | |
8 #include <stdint.h> | |
9 | |
10 #include "mojo/public/c/system/macros.h" | |
11 | |
12 MOJO_BEGIN_EXTERN_C | |
13 | |
14 // The fields below are just the header of a mojom array. The bytes that | |
15 // immediately follow this struct consist of |num_bytes - sizeof(MojomArray)| | |
16 // bytes describing |num_elements| elements of the array. | |
17 struct MojomArray { | |
viettrungluu
2016/06/17 20:37:19
Maybe this should be called MojomArrayHeader inste
vardhan
2016/06/21 16:07:36
Done.
| |
18 // num_bytes includes the size of this struct along with the | |
19 // accompanying array bytes that follow these fields. | |
20 uint32_t num_bytes; | |
21 uint32_t num_elements; | |
22 }; | |
23 MOJO_STATIC_ASSERT(sizeof(struct MojomArray) == 8, | |
24 "struct MojomArray must be 8 bytes."); | |
25 | |
26 // This union is used to represent references to a mojom array. | |
27 union MojomArrayPtr { | |
28 // |ptr| is used to access the array when it hasn't been encoded yet. | |
29 struct MojomArray* ptr; | |
30 // |offset| is used to access the array after it has been encoded. | |
31 uint64_t offset; | |
32 }; | |
33 MOJO_STATIC_ASSERT(sizeof(union MojomArrayPtr) == 8, | |
34 "union MojomArrayPtr must be 8 bytes."); | |
35 | |
36 MOJO_END_EXTERN_C | |
37 | |
38 #endif // MOJO_PUBLIC_C_BINDINGS_ARRAY_H_ | |
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