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