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      1 /*
      2  * Copyright (C) 2010 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
     14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     23  * THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef MachPort_h
     27 #define MachPort_h
     28 
     29 #include "ArgumentDecoder.h"
     30 #include "ArgumentEncoder.h"
     31 #include "Attachment.h"
     32 
     33 namespace CoreIPC {
     34 
     35 class MachPort {
     36 public:
     37     MachPort()
     38         : m_port(MACH_PORT_NULL)
     39         , m_disposition(0)
     40     {
     41     }
     42 
     43     MachPort(mach_port_name_t port, mach_msg_type_name_t disposition)
     44         : m_port(port)
     45         , m_disposition(disposition)
     46     {
     47     }
     48 
     49     void encode(ArgumentEncoder* encoder) const
     50     {
     51         encoder->encode(Attachment(m_port, m_disposition));
     52     }
     53 
     54     static bool decode(ArgumentDecoder* decoder, MachPort& p)
     55     {
     56         Attachment attachment;
     57         if (!decoder->decode(attachment))
     58             return false;
     59 
     60         p.m_port = attachment.port();
     61         p.m_disposition = attachment.disposition();
     62         return true;
     63     }
     64 
     65     mach_port_name_t port() const { return m_port; }
     66     mach_msg_type_name_t disposition() const { return m_disposition; }
     67 
     68 private:
     69     mach_port_name_t m_port;
     70     mach_msg_type_name_t m_disposition;
     71 };
     72 
     73 } // namespace CoreIPC
     74 
     75 #endif // MachPort_h
     76