// 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_MACH_PORT_ATTACHMENT_MAC_H_ #define IPC_MACH_PORT_ATTACHMENT_MAC_H_ #include #include #include "base/process/process_handle.h" #include "ipc/ipc_message_attachment.h" #include "ipc/ipc_message_support_export.h" #include "ipc/mach_port_mac.h" namespace IPC { namespace internal { // This class represents an OSX mach_port_t attached to a Chrome IPC message. class IPC_MESSAGE_SUPPORT_EXPORT MachPortAttachmentMac : public MessageAttachment { public: // This constructor increments the ref count of |mach_port_| and takes // ownership of the result. Should only be called by the sender of a Chrome // IPC message. explicit MachPortAttachmentMac(mach_port_t mach_port); MachPortAttachmentMac(const MachPortAttachmentMac&) = delete; MachPortAttachmentMac& operator=(const MachPortAttachmentMac&) = delete; enum FromWire { FROM_WIRE, }; // This constructor takes ownership of |mach_port|, but does not modify its // ref count. Should only be called by the receiver of a Chrome IPC message. MachPortAttachmentMac(mach_port_t mach_port, FromWire from_wire); Type GetType() const override; mach_port_t get_mach_port() const { return mach_port_; } // The caller of this method has taken ownership of |mach_port_|. void reset_mach_port_ownership() { owns_mach_port_ = false; } private: ~MachPortAttachmentMac() override; const mach_port_t mach_port_; // In the sender process, the attachment owns the Mach port of a newly created // message. The attachment broker will eventually take ownership of // |mach_port_|. // In the destination process, the attachment owns |mach_port_| until // ParamTraits::Read() is called, which takes ownership. bool owns_mach_port_; }; } // namespace internal } // namespace IPC #endif // IPC_MACH_PORT_ATTACHMENT_MAC_H_