| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "content/browser/file_descriptor_info_impl.h" |
| |
| #include <utility> |
| |
| #include "base/stl_util.h" |
| |
| namespace content { |
| |
| // static |
| scoped_ptr<FileDescriptorInfo> FileDescriptorInfoImpl::Create() { |
| return scoped_ptr<FileDescriptorInfo>(new FileDescriptorInfoImpl()); |
| } |
| |
| FileDescriptorInfoImpl::FileDescriptorInfoImpl() { |
| } |
| |
| FileDescriptorInfoImpl::~FileDescriptorInfoImpl() { |
| } |
| |
| void FileDescriptorInfoImpl::Share(int id, base::PlatformFile fd) { |
| AddToMapping(id, fd); |
| } |
| |
| void FileDescriptorInfoImpl::Transfer(int id, base::ScopedFD fd) { |
| AddToMapping(id, fd.get()); |
| owned_descriptors_.push_back(std::move(fd)); |
| } |
| |
| base::PlatformFile FileDescriptorInfoImpl::GetFDAt(size_t i) const { |
| return mapping_[i].first; |
| } |
| |
| int FileDescriptorInfoImpl::GetIDAt(size_t i) const { |
| return mapping_[i].second; |
| } |
| |
| size_t FileDescriptorInfoImpl::GetMappingSize() const { |
| return mapping_.size(); |
| } |
| |
| bool FileDescriptorInfoImpl::HasID(int id) const { |
| for (unsigned i = 0; i < mapping_.size(); ++i) { |
| if (mapping_[i].second == id) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| bool FileDescriptorInfoImpl::OwnsFD(base::PlatformFile file) const { |
| return ContainsValue(owned_descriptors_, file); |
| } |
| |
| base::ScopedFD FileDescriptorInfoImpl::ReleaseFD(base::PlatformFile file) { |
| DCHECK(OwnsFD(file)); |
| |
| base::ScopedFD fd; |
| auto found = |
| std::find(owned_descriptors_.begin(), owned_descriptors_.end(), file); |
| |
| std::swap(*found, fd); |
| owned_descriptors_.erase(found); |
| |
| return fd; |
| } |
| |
| void FileDescriptorInfoImpl::AddToMapping(int id, base::PlatformFile fd) { |
| DCHECK(!HasID(id)); |
| mapping_.push_back(std::make_pair(fd, id)); |
| } |
| |
| const base::FileHandleMappingVector& FileDescriptorInfoImpl::GetMapping() |
| const { |
| return mapping_; |
| } |
| |
| base::FileHandleMappingVector |
| FileDescriptorInfoImpl::GetMappingWithIDAdjustment(int delta) const { |
| base::FileHandleMappingVector result = mapping_; |
| // Adding delta to each ID. |
| for (unsigned i = 0; i < mapping_.size(); ++i) |
| result[i].second += delta; |
| return result; |
| } |
| |
| } // namespace content |