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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 #include "mojo/public/c/bindings/buffer.h" | |
6 | |
7 #include <assert.h> | |
8 #include <stddef.h> | |
9 | |
10 #include "mojo/public/c/bindings/lib/util.h" | |
11 | |
12 void* MojomBuffer_Allocate(struct MojomBuffer* buf, uint32_t num_bytes) { | |
13 assert(buf); | |
14 | |
15 const uint32_t bytes_used = buf->num_bytes_used; | |
16 const uint64_t size = MOJOM_INTERNAL_ROUND_TO_8((uint64_t)num_bytes); | |
17 if (bytes_used + size > buf->buf_size) | |
18 return NULL; | |
19 | |
20 buf->num_bytes_used += size; | |
21 return buf->buf + bytes_used; | |
22 } | |
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