ref_counted_memory.cc revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/ref_counted_memory.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool RefCountedMemory::Equals( 122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const scoped_refptr<RefCountedMemory>& other) const { 132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return other.get() && 142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size() == other->size() && 152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) (memcmp(front(), other->front(), size()) == 0); 162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)RefCountedMemory::RefCountedMemory() {} 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)RefCountedMemory::~RefCountedMemory() {} 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const unsigned char* RefCountedStaticMemory::front() const { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return data_; 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)size_t RefCountedStaticMemory::size() const { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return length_; 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)RefCountedStaticMemory::~RefCountedStaticMemory() {} 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)RefCountedBytes::RefCountedBytes() {} 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)RefCountedBytes::RefCountedBytes(const std::vector<unsigned char>& initializer) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : data_(initializer) { 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)RefCountedBytes* RefCountedBytes::TakeVector( 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::vector<unsigned char>* to_destroy) { 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RefCountedBytes* bytes = new RefCountedBytes; 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bytes->data_.swap(*to_destroy); 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return bytes; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const unsigned char* RefCountedBytes::front() const { 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // STL will assert if we do front() on an empty vector, but calling code 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // expects a NULL. 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return size() ? &data_.front() : NULL; 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)size_t RefCountedBytes::size() const { 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return data_.size(); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)RefCountedBytes::~RefCountedBytes() {} 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)RefCountedString::RefCountedString() {} 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)RefCountedString::~RefCountedString() {} 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)RefCountedString* RefCountedString::TakeString(std::string* to_destroy) { 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RefCountedString* self = new RefCountedString; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) to_destroy->swap(self->data_); 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return self; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const unsigned char* RefCountedString::front() const { 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return data_.empty() ? NULL : 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<const unsigned char*>(data_.data()); 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)size_t RefCountedString::size() const { 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return data_.size(); 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace base 78