<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>MPQC: messshm.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"> <link href="doxygen.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.5.9 --> <div class="navigation" id="top"> <div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li><a href="annotated.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> </ul> </div> <div class="tabs"> <ul> <li><a href="files.html"><span>File List</span></a></li> </ul> </div> <h1>messshm.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//</span> <a name="l00002"></a>00002 <span class="comment">// messshm.h</span> <a name="l00003"></a>00003 <span class="comment">//</span> <a name="l00004"></a>00004 <span class="comment">// Copyright (C) 1996 Limit Point Systems, Inc.</span> <a name="l00005"></a>00005 <span class="comment">//</span> <a name="l00006"></a>00006 <span class="comment">// Author: Curtis Janssen <cljanss@limitpt.com></span> <a name="l00007"></a>00007 <span class="comment">// Maintainer: LPS</span> <a name="l00008"></a>00008 <span class="comment">//</span> <a name="l00009"></a>00009 <span class="comment">// This file is part of the SC Toolkit.</span> <a name="l00010"></a>00010 <span class="comment">//</span> <a name="l00011"></a>00011 <span class="comment">// The SC Toolkit is free software; you can redistribute it and/or modify</span> <a name="l00012"></a>00012 <span class="comment">// it under the terms of the GNU Library General Public License as published by</span> <a name="l00013"></a>00013 <span class="comment">// the Free Software Foundation; either version 2, or (at your option)</span> <a name="l00014"></a>00014 <span class="comment">// any later version.</span> <a name="l00015"></a>00015 <span class="comment">//</span> <a name="l00016"></a>00016 <span class="comment">// The SC Toolkit is distributed in the hope that it will be useful,</span> <a name="l00017"></a>00017 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span> <a name="l00018"></a>00018 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span> <a name="l00019"></a>00019 <span class="comment">// GNU Library General Public License for more details.</span> <a name="l00020"></a>00020 <span class="comment">//</span> <a name="l00021"></a>00021 <span class="comment">// You should have received a copy of the GNU Library General Public License</span> <a name="l00022"></a>00022 <span class="comment">// along with the SC Toolkit; see the file COPYING.LIB. If not, write to</span> <a name="l00023"></a>00023 <span class="comment">// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.</span> <a name="l00024"></a>00024 <span class="comment">//</span> <a name="l00025"></a>00025 <span class="comment">// The U.S. Government is granted a limited license as per AL 91-7.</span> <a name="l00026"></a>00026 <span class="comment">//</span> <a name="l00027"></a>00027 <a name="l00028"></a>00028 <span class="preprocessor">#ifndef _util_group_messshm_h</span> <a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#define _util_group_messshm_h</span> <a name="l00030"></a>00030 <span class="preprocessor"></span> <a name="l00031"></a>00031 <span class="preprocessor">#include <unistd.h></span> <a name="l00032"></a>00032 <span class="preprocessor">#include <sys/types.h></span> <a name="l00033"></a>00033 <span class="preprocessor">#include <sys/ipc.h></span> <a name="l00034"></a>00034 <span class="preprocessor">#include <sys/sem.h></span> <a name="l00035"></a>00035 <span class="preprocessor">#include <sys/shm.h></span> <a name="l00036"></a>00036 <a name="l00037"></a>00037 <span class="preprocessor">#include <util/group/message.h></span> <a name="l00038"></a>00038 <a name="l00039"></a>00039 <span class="keyword">namespace </span>sc { <a name="l00040"></a>00040 <a name="l00041"></a>00041 <span class="preprocessor">#define SHMCOMMBUFSIZE 1500000</span> <a name="l00042"></a>00042 <span class="preprocessor"></span> <a name="l00043"></a>00043 <span class="comment">/* Set the maximum number of processors (including the host). */</span> <a name="l00044"></a>00044 <span class="preprocessor">#define MAXPROCS 17</span> <a name="l00045"></a>00045 <span class="preprocessor"></span> <a name="l00046"></a>00046 <a name="l00047"></a>00047 <span class="keyword">struct </span>commbuf_struct { <a name="l00048"></a>00048 <span class="keywordtype">int</span> nmsg; <a name="l00049"></a>00049 <span class="keywordtype">int</span> n_wait_for_change; <a name="l00050"></a>00050 <span class="keywordtype">int</span> n_sync; <a name="l00051"></a>00051 <span class="keywordtype">char</span> buf[SHMCOMMBUFSIZE]; <a name="l00052"></a>00052 }; <a name="l00053"></a>00053 <span class="keyword">typedef</span> <span class="keyword">struct </span>commbuf_struct commbuf_t; <a name="l00054"></a>00054 <a name="l00055"></a>00055 <span class="keyword">struct </span>msgbuf_struct { <a name="l00056"></a>00056 <span class="keywordtype">int</span> type; <a name="l00057"></a>00057 <span class="keywordtype">int</span> from; <a name="l00058"></a>00058 <span class="keywordtype">int</span> size; <a name="l00059"></a>00059 }; <a name="l00060"></a>00060 <span class="keyword">typedef</span> <span class="keyword">struct </span>msgbuf_struct msgbuf_t; <a name="l00061"></a>00061 <a name="l00068"></a><a class="code" href="classsc_1_1ShmMessageGrp.html">00068</a> <span class="keyword">class </span><a class="code" href="classsc_1_1ShmMessageGrp.html" title="The ShmMessageGrp class is an implementation of MessageGrp that allows multiple process...">ShmMessageGrp</a>: <span class="keyword">public</span> <a class="code" href="classsc_1_1intMessageGrp.html" title="Uses integer message types to send and receive messages.">intMessageGrp</a> { <a name="l00069"></a>00069 <span class="keyword">protected</span>: <a name="l00070"></a>00070 <span class="keywordtype">void</span> <a class="code" href="classsc_1_1ShmMessageGrp.html#c49003e2dfbfca514a3454d1ccecbd99" title="Must be implemented by specializations.">basic_send</a>(<span class="keywordtype">int</span> target, <span class="keywordtype">int</span> type, <span class="keyword">const</span> <span class="keywordtype">void</span>* data, <span class="keywordtype">int</span> nbyte); <a name="l00071"></a>00071 <span class="keywordtype">void</span> <a class="code" href="classsc_1_1ShmMessageGrp.html#38e312a41172f86193d1183ac169288c" title="Must be implemented by specializations.">basic_recv</a>(<span class="keywordtype">int</span> type, <span class="keywordtype">void</span>* data, <span class="keywordtype">int</span> nbyte); <a name="l00072"></a>00072 <span class="keywordtype">int</span> <a class="code" href="classsc_1_1ShmMessageGrp.html#b686e185158e8c1ca3e131cf7433a72c" title="Must be implemented by specializations.">basic_probe</a>(<span class="keywordtype">int</span> type); <a name="l00073"></a>00073 <span class="keywordtype">void</span> initialize(<span class="keywordtype">int</span> nprocs); <a name="l00074"></a>00074 <span class="keywordtype">void</span> initialize(); <a name="l00075"></a>00075 <a name="l00076"></a>00076 <span class="comment">// previously static variables</span> <a name="l00077"></a>00077 commbuf_t *commbuf[MAXPROCS]; <a name="l00078"></a>00078 <span class="keywordtype">int</span> shmid; <a name="l00079"></a>00079 <span class="keywordtype">int</span> semid; <a name="l00080"></a>00080 <span class="keywordtype">int</span> change_semid; <a name="l00081"></a>00081 <span class="keywordtype">void</span>* sharedmem; <a name="l00082"></a>00082 <span class="keyword">struct </span>sembuf semdec; <a name="l00083"></a>00083 <span class="keyword">struct </span>sembuf seminc; <a name="l00084"></a>00084 <a name="l00085"></a>00085 <span class="comment">// previously static functions for semephore operations</span> <a name="l00086"></a>00086 msgbuf_t *NEXT_MESSAGE(msgbuf_t *m); <a name="l00087"></a>00087 <span class="keywordtype">void</span> get_change(<span class="keywordtype">int</span> node); <a name="l00088"></a>00088 <span class="keywordtype">void</span> put_change(<span class="keywordtype">int</span> node); <a name="l00089"></a>00089 <span class="keywordtype">void</span> wait_for_write(<span class="keywordtype">int</span> node); <a name="l00090"></a>00090 <span class="keywordtype">void</span> release_write(<span class="keywordtype">int</span> node); <a name="l00091"></a>00091 <span class="preprocessor">#ifdef DEBUG</span> <a name="l00092"></a>00092 <span class="preprocessor"></span> <span class="keywordtype">void</span> print_buffer(<span class="keywordtype">int</span> node, <span class="keywordtype">int</span> <a class="code" href="classsc_1_1MessageGrp.html#42f1c812f355f1f6d104fc26d72e2d41" title="Returns my processor number. In the range [0,n()).">me</a>); <a name="l00093"></a>00093 <span class="preprocessor">#endif</span> <a name="l00094"></a>00094 <span class="preprocessor"></span> <span class="keyword">public</span>: <a name="l00096"></a>00096 <a class="code" href="classsc_1_1ShmMessageGrp.html#468e266389875a8087c25ca85fbb1c95" title="Reads the number of processors from environmental variable NUMPROC.">ShmMessageGrp</a>(); <a name="l00106"></a>00106 <a class="code" href="classsc_1_1ShmMessageGrp.html#468e266389875a8087c25ca85fbb1c95" title="Reads the number of processors from environmental variable NUMPROC.">ShmMessageGrp</a>(<span class="keyword">const</span> <a class="code" href="classsc_1_1Ref.html">Ref<KeyVal></a>&); <a name="l00108"></a>00108 <a class="code" href="classsc_1_1ShmMessageGrp.html#468e266389875a8087c25ca85fbb1c95" title="Reads the number of processors from environmental variable NUMPROC.">ShmMessageGrp</a>(<span class="keywordtype">int</span> nprocs); <a name="l00109"></a>00109 ~<a class="code" href="classsc_1_1ShmMessageGrp.html" title="The ShmMessageGrp class is an implementation of MessageGrp that allows multiple process...">ShmMessageGrp</a>(); <a name="l00110"></a>00110 <span class="keywordtype">void</span> <a class="code" href="classsc_1_1ShmMessageGrp.html#867ee472c612bc6764b48c1abcf05171" title="Synchronize all of the processors.">sync</a>(); <a name="l00111"></a>00111 <a name="l00112"></a>00112 <a class="code" href="classsc_1_1Ref.html">Ref<MessageGrp></a> <a class="code" href="classsc_1_1ShmMessageGrp.html#a2a7b603183871a6a3d25cdd5de05290" title="Returns a copy of this MessageGrp specialization that provides an independent communication...">clone</a>(<span class="keywordtype">void</span>); <a name="l00113"></a>00113 }; <a name="l00114"></a>00114 <a name="l00115"></a>00115 } <a name="l00116"></a>00116 <a name="l00117"></a>00117 <span class="preprocessor">#endif</span> <a name="l00118"></a>00118 <span class="preprocessor"></span> <a name="l00119"></a>00119 <span class="comment">// Local Variables:</span> <a name="l00120"></a>00120 <span class="comment">// mode: c++</span> <a name="l00121"></a>00121 <span class="comment">// c-file-style: "CLJ"</span> <a name="l00122"></a>00122 <span class="comment">// End:</span> </pre></div></div> <hr> <address> <small> Generated at Wed Oct 14 14:12:10 2009 for <a href="http://www.mpqc.org">MPQC</a> 2.3.1 using the documentation package <a href="http://www.doxygen.org">Doxygen</a> 1.5.9. </small> </address> </body> </html>