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Issue 220243007: Mojo: Move mojo/public/bindings/lib to mojo/public/cpp/bindings/lib. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 6 years, 8 months ago
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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
3 // found in the LICENSE file.
4
5 #include "mojo/public/bindings/lib/fixed_buffer.h"
6
7 #include <assert.h>
8 #include <stdlib.h>
9 #include <string.h>
10
11 #include <algorithm>
12
13 #include "mojo/public/bindings/lib/bindings_serialization.h"
14
15 namespace mojo {
16 namespace internal {
17
18 FixedBuffer::FixedBuffer(size_t size)
19 : ptr_(NULL),
20 cursor_(0),
21 size_(internal::Align(size)) {
22 ptr_ = static_cast<char*>(calloc(size_, 1));
23 }
24
25 FixedBuffer::~FixedBuffer() {
26 free(ptr_);
27 }
28
29 void* FixedBuffer::Allocate(size_t delta, Destructor dtor) {
30 assert(!dtor);
31
32 delta = internal::Align(delta);
33
34 if (delta == 0 || delta > size_ - cursor_) {
35 assert(false);
36 return NULL;
37 }
38
39 char* result = ptr_ + cursor_;
40 cursor_ += delta;
41
42 return result;
43 }
44
45 void* FixedBuffer::Leak() {
46 char* ptr = ptr_;
47 ptr_ = NULL;
48 cursor_ = 0;
49 size_ = 0;
50 return ptr;
51 }
52
53 } // namespace internal
54 } // namespace mojo
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