Move //mojo/shell to //shell

mojo/shell/domain_socket/socket_libevent.h

-// Copyright 2014 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.
-
-#ifndef MOJO_SHELL_DOMAIN_SOCKET_SOCKET_LIBEVENT_H_
-#define MOJO_SHELL_DOMAIN_SOCKET_SOCKET_LIBEVENT_H_
-
-#include <sys/types.h>
-#include <sys/socket.h>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/message_loop/message_loop.h"
-#include "base/threading/thread_checker.h"
-#include "mojo/shell/domain_socket/completion_callback.h"
-#include "mojo/shell/domain_socket/socket_descriptor.h"
-
-namespace mojo {
-namespace shell {
-
-// Convenience struct for when you need a |struct sockaddr|.
-struct SockaddrStorage {
-  SockaddrStorage()
-      : addr_len(sizeof(addr_storage)),
-        addr(reinterpret_cast<struct sockaddr*>(&addr_storage)) {}
-  SockaddrStorage(const SockaddrStorage& other);
-  void operator=(const SockaddrStorage& other);
-
-  struct sockaddr_storage addr_storage;
-  socklen_t addr_len;
-  struct sockaddr* const addr;
-};
-
-// Socket class to provide asynchronous read/write operations on top of the
-// posix socket api. It supports AF_INET, AF_INET6, and AF_UNIX addresses.
-class SocketLibevent : public base::MessageLoopForIO::Watcher {
- public:
-  SocketLibevent();
-  ~SocketLibevent() override;
-
-  // Opens a socket and returns net::OK if |address_family| is AF_INET, AF_INET6
-  // or AF_UNIX. Otherwise, it does DCHECK() and returns a net error.
-  int Open(int address_family);
-  // Takes ownership of |socket|.
-  int AdoptConnectedSocket(SocketDescriptor socket,
-                           const SockaddrStorage& peer_address);
-  // Releases ownership of |socket_fd_| to caller.
-  SocketDescriptor ReleaseConnectedSocket();
-
-  int Bind(const SockaddrStorage& address);
-
-  int Listen(int backlog);
-  int Accept(scoped_ptr<SocketLibevent>* socket,
-             const CompletionCallback& callback);
-
-  // Connects socket. On non-ERR_IO_PENDING error, sets errno and returns a net
-  // error code. On ERR_IO_PENDING, |callback| is called with a net error code,
-  // not errno, though errno is set if connect event happens with error.
-  // TODO(byungchul): Need more robust way to pass system errno.
-  int Connect(const SockaddrStorage& address,
-              const CompletionCallback& callback);
-  bool IsConnected() const;
-  bool IsConnectedAndIdle() const;
-
-  int GetLocalAddress(SockaddrStorage* address) const;
-  int GetPeerAddress(SockaddrStorage* address) const;
-  void SetPeerAddress(const SockaddrStorage& address);
-  // Returns true if peer address has been set regardless of socket state.
-  bool HasPeerAddress() const;
-
-  void Close();
-
-  SocketDescriptor socket_fd() const { return socket_fd_; }
-
- private:
-  // base::MessageLoopForIO::Watcher methods.
-  void OnFileCanReadWithoutBlocking(int fd) override;
-  void OnFileCanWriteWithoutBlocking(int fd) override;
-
-  int DoAccept(scoped_ptr<SocketLibevent>* socket);
-  void AcceptCompleted();
-
-  int DoConnect();
-  void ConnectCompleted();
-
-  void StopWatchingAndCleanUp();
-
-  SocketDescriptor socket_fd_;
-
-  base::MessageLoopForIO::FileDescriptorWatcher accept_socket_watcher_;
-  scoped_ptr<SocketLibevent>* accept_socket_;
-  CompletionCallback accept_callback_;
-
-  base::MessageLoopForIO::FileDescriptorWatcher read_socket_watcher_;
-  // External callback; called when read is complete.
-  CompletionCallback read_callback_;
-
-  base::MessageLoopForIO::FileDescriptorWatcher write_socket_watcher_;
-  // External callback; called when write or connect is complete.
-  CompletionCallback write_callback_;
-
-  // A connect operation is pending. In this case, |write_callback_| needs to be
-  // called when connect is complete.
-  bool waiting_connect_;
-
-  scoped_ptr<SockaddrStorage> peer_address_;
-
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(SocketLibevent);
-};
-
-}  // namespace shell
-}  // namespace mojo
-
-#endif  // MOJO_SHELL_DOMAIN_SOCKET_SOCKET_LIBEVENT_H_