/* * Copyright (c) 1987, 1988, 1989, 1990, 1991 Stanford University * Copyright (c) 1991 Silicon Graphics, Inc. * * Permission to use, copy, modify, distribute, and sell this software and * its documentation for any purpose is hereby granted without fee, provided * that (i) the above copyright notices and this permission notice appear in * all copies of the software and related documentation, and (ii) the names of * Stanford and Silicon Graphics may not be used in any advertising or * publicity relating to the software without the specific, prior written * permission of Stanford and Silicon Graphics. * * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. * * IN NO EVENT SHALL STANFORD OR SILICON GRAPHICS BE LIABLE FOR * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE * OF THIS SOFTWARE. */ #ifndef dp_rpchdr_h #define dp_rpchdr_h #include <Dispatch/enter-scope.h> class rpcstream; // Insert or extract this header to send or receive a RPC request. class RpcHdr { public: RpcHdr(void* writer, int request); RpcHdr(); unsigned long reader(); int request(); int ndata(); protected: friend rpcstream& operator>>(rpcstream&, RpcHdr&); friend rpcstream& operator<<(rpcstream&, const RpcHdr&); protected: union { void* _writer; // stores writer sending this RPC request unsigned long _reader; // maps to reader for this RPC request }; int _request; // maps to member function to be called int _ndata; // gives size (in bytes) of data to extract }; // Get information about the RPC request. inline unsigned long RpcHdr::reader() { return _reader; } inline int RpcHdr::request() { return _request; } inline int RpcHdr::ndata() { return _ndata; } #endif