base/memory/ref_counted_memory.cc

   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 "base/logging.h"
   8
   9 namespace base {
  10
  11 bool RefCountedMemory::Equals(
  12     const scoped_refptr<RefCountedMemory>& other) const {
  13   return other.get() &&
  14          size() == other->size() &&
  15          (memcmp(front(), other->front(), size()) == 0);
  16 }
  17
  18 RefCountedMemory::RefCountedMemory() {}
  19
  20 RefCountedMemory::~RefCountedMemory() {}
  21
  22 const unsigned char* RefCountedStaticMemory::front() const {
  23   return data_;
  24 }
  25
  26 size_t RefCountedStaticMemory::size() const {
  27   return length_;
  28 }
  29
  30 RefCountedStaticMemory::~RefCountedStaticMemory() {}
  31
  32 RefCountedBytes::RefCountedBytes() {}
  33
  34 RefCountedBytes::RefCountedBytes(const std::vector<unsigned char>& initializer)
  35     : data_(initializer) {
  36 }
  37
  38 RefCountedBytes* RefCountedBytes::TakeVector(
  39     std::vector<unsigned char>* to_destroy) {
  40   RefCountedBytes* bytes = new RefCountedBytes;
  41   bytes->data_.swap(*to_destroy);
  42   return bytes;
  43 }
  44
  45 const unsigned char* RefCountedBytes::front() const {
  46   // STL will assert if we do front() on an empty vector, but calling code
  47   // expects a NULL.
  48   return size() ? &data_.front() : NULL;
  49 }
  50
  51 size_t RefCountedBytes::size() const {
  52   return data_.size();
  53 }
  54
  55 RefCountedBytes::~RefCountedBytes() {}
  56
  57 RefCountedString::RefCountedString() {}
  58
  59 RefCountedString::~RefCountedString() {}
  60
  61 // static
  62 RefCountedString* RefCountedString::TakeString(std::string* to_destroy) {
  63   RefCountedString* self = new RefCountedString;
  64   to_destroy->swap(self->data_);
  65   return self;
  66 }
  67
  68 const unsigned char* RefCountedString::front() const {
  69   return data_.empty() ? NULL :
  70          reinterpret_cast<const unsigned char*>(data_.data());
  71 }
  72
  73 size_t RefCountedString::size() const {
  74   return data_.size();
  75 }
  76
  77 }  //  namespace base