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// 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"
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(new base::ScopedFD(fd.Pass()));
}
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 owned_descriptors_.end() !=
std::find_if(
owned_descriptors_.begin(), owned_descriptors_.end(),
[file](const base::ScopedFD* fd) { return fd->get() == file; });
}
base::ScopedFD FileDescriptorInfoImpl::ReleaseFD(base::PlatformFile file) {
DCHECK(OwnsFD(file));
base::ScopedFD fd;
auto found = std::find_if(
owned_descriptors_.begin(), owned_descriptors_.end(),
[file](const base::ScopedFD* fd) { return fd->get() == file; });
(*found)->swap(fd);
owned_descriptors_.erase(found);
return fd.Pass();
}
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
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