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(const unsigned char* p, size_t size)
41    : data_(p, p + size) {}
42
43RefCountedBytes* RefCountedBytes::TakeVector(
44    std::vector<unsigned char>* to_destroy) {
45  RefCountedBytes* bytes = new RefCountedBytes;
46  bytes->data_.swap(*to_destroy);
47  return bytes;
48}
49
50const unsigned char* RefCountedBytes::front() const {
51  // STL will assert if we do front() on an empty vector, but calling code
52  // expects a NULL.
53  return size() ? &data_.front() : NULL;
54}
55
56size_t RefCountedBytes::size() const {
57  return data_.size();
58}
59
60RefCountedBytes::~RefCountedBytes() {}
61
62RefCountedString::RefCountedString() {}
63
64RefCountedString::~RefCountedString() {}
65
66// static
67RefCountedString* RefCountedString::TakeString(std::string* to_destroy) {
68  RefCountedString* self = new RefCountedString;
69  to_destroy->swap(self->data_);
70  return self;
71}
72
73const unsigned char* RefCountedString::front() const {
74  return data_.empty() ? NULL :
75         reinterpret_cast<const unsigned char*>(data_.data());
76}
77
78size_t RefCountedString::size() const {
79  return data_.size();
80}
81
82RefCountedMallocedMemory::RefCountedMallocedMemory(
83    void* data, size_t length)
84    : data_(reinterpret_cast<unsigned char*>(data)), length_(length) {
85  DCHECK(data || length == 0);
86}
87
88const unsigned char* RefCountedMallocedMemory::front() const {
89  return length_ ? data_ : NULL;
90}
91
92size_t RefCountedMallocedMemory::size() const {
93  return length_;
94}
95
96RefCountedMallocedMemory::~RefCountedMallocedMemory() {
97  free(data_);
98}
99
100}  //  namespace base
101