| // 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 <algorithm> |
| |
| #include "base/bind.h" |
| #include "base/files/file.h" |
| #include "base/location.h" |
| #include "base/logging.h" |
| #include "base/threading/worker_pool.h" |
| #include "dbus/file_descriptor.h" |
| |
| using std::swap; |
| |
| namespace dbus { |
| |
| void CHROME_DBUS_EXPORT FileDescriptor::Deleter::operator()( |
| FileDescriptor* fd) { |
| base::WorkerPool::PostTask( |
| FROM_HERE, base::Bind(&base::DeletePointer<FileDescriptor>, fd), false); |
| } |
| |
| FileDescriptor::FileDescriptor(FileDescriptor&& other) : FileDescriptor() { |
| Swap(&other); |
| } |
| |
| FileDescriptor::~FileDescriptor() { |
| if (owner_) |
| base::File auto_closer(value_); |
| } |
| |
| FileDescriptor& FileDescriptor::operator=(FileDescriptor&& other) { |
| Swap(&other); |
| return *this; |
| } |
| |
| int FileDescriptor::value() const { |
| CHECK(valid_); |
| return value_; |
| } |
| |
| int FileDescriptor::TakeValue() { |
| CHECK(valid_); // NB: check first so owner_ is unchanged if this triggers |
| owner_ = false; |
| return value_; |
| } |
| |
| void FileDescriptor::CheckValidity() { |
| base::File file(value_); |
| if (!file.IsValid()) { |
| valid_ = false; |
| return; |
| } |
| |
| base::File::Info info; |
| bool ok = file.GetInfo(&info); |
| file.TakePlatformFile(); // Prevent |value_| from being closed by |file|. |
| valid_ = (ok && !info.is_directory); |
| } |
| |
| void FileDescriptor::Swap(FileDescriptor* other) { |
| swap(value_, other->value_); |
| swap(owner_, other->owner_); |
| swap(valid_, other->valid_); |
| } |
| |
| } // namespace dbus |