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<hr><h1>topology.h</h1><div class="fragment"><pre>00001 <font class="comment">//</font>
00002 <font class="comment">// topology.h</font>
00003 <font class="comment">//</font>
00004 <font class="comment">// Copyright (C) 1996 Limit Point Systems, Inc.</font>
00005 <font class="comment">//</font>
00006 <font class="comment">// Author: Curtis Janssen <cljanss@limitpt.com></font>
00007 <font class="comment">// Maintainer: LPS</font>
00008 <font class="comment">//</font>
00009 <font class="comment">// This file is part of the SC Toolkit.</font>
00010 <font class="comment">//</font>
00011 <font class="comment">// The SC Toolkit is free software; you can redistribute it and/or modify</font>
00012 <font class="comment">// it under the terms of the GNU Library General Public License as published by</font>
00013 <font class="comment">// the Free Software Foundation; either version 2, or (at your option)</font>
00014 <font class="comment">// any later version.</font>
00015 <font class="comment">//</font>
00016 <font class="comment">// The SC Toolkit is distributed in the hope that it will be useful,</font>
00017 <font class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00018 <font class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</font>
00019 <font class="comment">// GNU Library General Public License for more details.</font>
00020 <font class="comment">//</font>
00021 <font class="comment">// You should have received a copy of the GNU Library General Public License</font>
00022 <font class="comment">// along with the SC Toolkit; see the file COPYING.LIB. If not, write to</font>
00023 <font class="comment">// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.</font>
00024 <font class="comment">//</font>
00025 <font class="comment">// The U.S. Government is granted a limited license as per AL 91-7.</font>
00026 <font class="comment">//</font>
00027
00028 <font class="preprocessor">#ifdef __GNUG__</font>
00029 <font class="preprocessor"></font><font class="preprocessor">#pragma interface</font>
00030 <font class="preprocessor"></font><font class="preprocessor">#endif</font>
00031 <font class="preprocessor"></font>
00032 <font class="preprocessor">#ifndef _util_group_topology_h</font>
00033 <font class="preprocessor"></font><font class="preprocessor">#define _util_group_topology_h</font>
00034 <font class="preprocessor"></font>
00035 <font class="preprocessor">#include <util/class/class.h></font>
00036 <font class="preprocessor">#include <util/keyval/keyval.h></font>
00037
00038 <font class="keyword">namespace </font>sc {
00039
00040 <font class="keyword">class </font>GlobalMsgIter: <font class="keyword">public</font> DescribedClass {
00041 <font class="keyword">protected</font>:
00042 <font class="keywordtype">int</font> me_;
00043 <font class="keywordtype">int</font> nproc_;
00044 <font class="keywordtype">int</font> root_;
00045 <font class="keywordtype">int</font> i_;
00046 <font class="keywordtype">int</font> n_; <font class="comment">// the number of steps--intialized by derived class CTORs</font>
00047 <font class="keywordtype">int</font> fwd_;
00048
00049 <font class="comment">// for sending messages in the forward direction (like a bcast)</font>
00050 <font class="keyword">virtual</font> <font class="keywordtype">int</font> fwdsendto() = 0;
00051 <font class="keyword">virtual</font> <font class="keywordtype">int</font> fwdsend() = 0;
00052 <font class="keyword">virtual</font> <font class="keywordtype">int</font> fwdrecvfrom() = 0;
00053 <font class="keyword">virtual</font> <font class="keywordtype">int</font> fwdrecv() = 0;
00054 <font class="keyword">public</font>:
00055 GlobalMsgIter(<font class="keywordtype">int</font> nproc, <font class="keywordtype">int</font> me, <font class="keywordtype">int</font> root = 0);
00056 <font class="keywordtype">void</font> backwards()<font class="keyword"> </font>{ fwd_ = 0; i_ = n_ - 1; }
00057 <font class="keywordtype">void</font> forwards()<font class="keyword"> </font>{ fwd_ = 1; i_ = 0; }
00058 <font class="keywordtype">void</font> next()<font class="keyword"> </font>{ <font class="keywordflow">if</font> (fwd_) i_++; <font class="keywordflow">else</font> i_--; }
00059 <font class="keywordtype">int</font> done()<font class="keyword"> </font>{ <font class="keywordflow">return</font> i_<0 || i_>=n_; }
00060 <font class="keywordtype">int</font> n()<font class="keyword"> </font>{ <font class="keywordflow">return</font> n_; }
00061 <font class="keywordtype">int</font> sendto()<font class="keyword"> </font>{ <font class="keywordflow">return</font> fwd_?fwdsendto():fwdrecvfrom(); }
00062 <font class="keywordtype">int</font> send()<font class="keyword"> </font>{ <font class="keywordflow">return</font> fwd_?fwdsend():fwdrecv(); }
00063 <font class="keywordtype">int</font> recvfrom()<font class="keyword"> </font>{ <font class="keywordflow">return</font> fwd_?fwdrecvfrom():fwdsendto(); }
00064 <font class="keywordtype">int</font> recv()<font class="keyword"> </font>{ <font class="keywordflow">return</font> fwd_?fwdrecv():fwdsend(); }
00065 };
00066
00067
00068 <font class="keyword">class </font>MessageGrp;
00069 <font class="keyword">class </font>MachineTopology: <font class="keyword">public</font> DescribedClass {
00070 <font class="keyword">public</font>:
00071 MachineTopology();
00072 MachineTopology(<font class="keyword">const</font> Ref<KeyVal>&);
00073 ~MachineTopology();
00074
00075 <font class="keyword">virtual</font> Ref<GlobalMsgIter> global_msg_iter(<font class="keyword">const</font> Ref<MessageGrp>&,
00076 <font class="keywordtype">int</font> target) = 0;
00077 };
00078
00079 }
00080
00081 <font class="preprocessor">#endif</font>
00082 <font class="preprocessor"></font>
00083 <font class="comment">// Local Variables:</font>
00084 <font class="comment">// mode: c++</font>
00085 <font class="comment">// c-file-style: "CLJ"</font>
00086 <font class="comment">// End:</font>
</div></pre><hr>
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