// Copyright 2015 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 IPC_HANDLE_ATTACHMENT_WIN_H_ #define IPC_HANDLE_ATTACHMENT_WIN_H_ #include #include "base/process/process_handle.h" #include "ipc/handle_win.h" #include "ipc/ipc_export.h" #include "ipc/ipc_message_attachment.h" namespace IPC { namespace internal { // This class represents a Windows HANDLE attached to a Chrome IPC message. class IPC_EXPORT HandleAttachmentWin : public MessageAttachment { public: // This constructor makes a copy of |handle| and takes ownership of the // result. Should only be called by the sender of a Chrome IPC message. HandleAttachmentWin(const HANDLE& handle, HandleWin::Permissions permissions); enum FromWire { FROM_WIRE, }; // This constructor takes ownership of |handle|. Should only be called by the // receiver of a Chrome IPC message. HandleAttachmentWin(const HANDLE& handle, FromWire from_wire); Type GetType() const override; HANDLE get_handle() const { return handle_; } // The caller of this method has taken ownership of |handle_|. void reset_handle_ownership() { owns_handle_ = false; handle_ = INVALID_HANDLE_VALUE; } private: ~HandleAttachmentWin() override; HANDLE handle_; HandleWin::Permissions permissions_; // In the sender process, the attachment owns the HANDLE of a newly created // message. The attachment broker will eventually take ownership, and set // this member to |false|. // In the destination process, the attachment owns the Mach port until a call // to ParamTraits::Read() takes ownership. bool owns_handle_; }; } // namespace internal } // namespace IPC #endif // IPC_HANDLE_ATTACHMENT_WIN_H_