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
3// found in the LICENSE file.
4
5#include "base/memory/ref_counted_memory.h"
6
7#include <stdlib.h>
8
9#include "base/logging.h"
10
11namespace base {
12
13bool RefCountedMemory::Equals(
14    const scoped_refptr<RefCountedMemory>& other) const {
15  return other.get() &&
16         size() == other->size() &&
17         (memcmp(front(), other->front(), size()) == 0);
18}
19
20RefCountedMemory::RefCountedMemory() {}
21
22RefCountedMemory::~RefCountedMemory() {}
23
24const unsigned char* RefCountedStaticMemory::front() const {
25  return data_;
26}
27
28size_t RefCountedStaticMemory::size() const {
29  return length_;
30}
31
32RefCountedStaticMemory::~RefCountedStaticMemory() {}
33
34RefCountedBytes::RefCountedBytes() {}
35
36RefCountedBytes::RefCountedBytes(const std::vector<unsigned char>& initializer)
37    : data_(initializer) {
38}
39
40RefCountedBytes* RefCountedBytes::TakeVector(
41    std::vector<unsigned char>* to_destroy) {
42  RefCountedBytes* bytes = new RefCountedBytes;
43  bytes->data_.swap(*to_destroy);
44  return bytes;
45}
46
47const unsigned char* RefCountedBytes::front() const {
48  // STL will assert if we do front() on an empty vector, but calling code
49  // expects a NULL.
50  return size() ? &data_.front() : NULL;
51}
52
53size_t RefCountedBytes::size() const {
54  return data_.size();
55}
56
57RefCountedBytes::~RefCountedBytes() {}
58
59RefCountedString::RefCountedString() {}
60
61RefCountedString::~RefCountedString() {}
62
63// static
64RefCountedString* RefCountedString::TakeString(std::string* to_destroy) {
65  RefCountedString* self = new RefCountedString;
66  to_destroy->swap(self->data_);
67  return self;
68}
69
70const unsigned char* RefCountedString::front() const {
71  return data_.empty() ? NULL :
72         reinterpret_cast<const unsigned char*>(data_.data());
73}
74
75size_t RefCountedString::size() const {
76  return data_.size();
77}
78
79RefCountedMallocedMemory::RefCountedMallocedMemory(
80    void* data, size_t length)
81    : data_(reinterpret_cast<unsigned char*>(data)), length_(length) {
82  DCHECK(data || length == 0);
83}
84
85const unsigned char* RefCountedMallocedMemory::front() const {
86  return length_ ? data_ : NULL;
87}
88
89size_t RefCountedMallocedMemory::size() const {
90  return length_;
91}
92
93RefCountedMallocedMemory::~RefCountedMallocedMemory() {
94  free(data_);
95}
96
97}  //  namespace base
98