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| 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 | |
| 11 namespace base { | |
| 12 | |
| 13 bool 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 | |
| 20 RefCountedMemory::RefCountedMemory() {} | |
| 21 | |
| 22 RefCountedMemory::~RefCountedMemory() {} | |
| 23 | |
| 24 const unsigned char* RefCountedStaticMemory::front() const { | |
| 25 return data_; | |
| 26 } | |
| 27 | |
| 28 size_t RefCountedStaticMemory::size() const { | |
| 29 return length_; | |
| 30 } | |
| 31 | |
| 32 RefCountedStaticMemory::~RefCountedStaticMemory() {} | |
| 33 | |
| 34 RefCountedBytes::RefCountedBytes() {} | |
| 35 | |
| 36 RefCountedBytes::RefCountedBytes(const std::vector<unsigned char>& initializer) | |
| 37 : data_(initializer) { | |
| 38 } | |
| 39 | |
| 40 RefCountedBytes::RefCountedBytes(const unsigned char* p, size_t size) | |
| 41 : data_(p, p + size) {} | |
| 42 | |
| 43 RefCountedBytes* 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 | |
| 50 const 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 | |
| 56 size_t RefCountedBytes::size() const { | |
| 57 return data_.size(); | |
| 58 } | |
| 59 | |
| 60 RefCountedBytes::~RefCountedBytes() {} | |
| 61 | |
| 62 RefCountedString::RefCountedString() {} | |
| 63 | |
| 64 RefCountedString::~RefCountedString() {} | |
| 65 | |
| 66 // static | |
| 67 RefCountedString* RefCountedString::TakeString(std::string* to_destroy) { | |
| 68 RefCountedString* self = new RefCountedString; | |
| 69 to_destroy->swap(self->data_); | |
| 70 return self; | |
| 71 } | |
| 72 | |
| 73 const unsigned char* RefCountedString::front() const { | |
| 74 return data_.empty() ? NULL : | |
| 75 reinterpret_cast<const unsigned char*>(data_.data()); | |
| 76 } | |
| 77 | |
| 78 size_t RefCountedString::size() const { | |
| 79 return data_.size(); | |
| 80 } | |
| 81 | |
| 82 RefCountedMallocedMemory::RefCountedMallocedMemory( | |
| 83 void* data, size_t length) | |
| 84 : data_(reinterpret_cast<unsigned char*>(data)), length_(length) { | |
| 85 DCHECK(data || length == 0); | |
| 86 } | |
| 87 | |
| 88 const unsigned char* RefCountedMallocedMemory::front() const { | |
| 89 return length_ ? data_ : NULL; | |
| 90 } | |
| 91 | |
| 92 size_t RefCountedMallocedMemory::size() const { | |
| 93 return length_; | |
| 94 } | |
| 95 | |
| 96 RefCountedMallocedMemory::~RefCountedMallocedMemory() { | |
| 97 free(data_); | |
| 98 } | |
| 99 | |
| 100 } // namespace base | |
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