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<hr><h1>memshm.h</h1><div class="fragment"><pre>00001 <font class="comment">//</font>
00002 <font class="comment">// memshm.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 __GNUC__</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_memshm_h</font>
00033 <font class="preprocessor"></font><font class="preprocessor">#define _util_group_memshm_h</font>
00034 <font class="preprocessor"></font>
00035 <font class="preprocessor">#include <sys/types.h></font>
00036 <font class="preprocessor">#include <sys/ipc.h></font>
00037 <font class="preprocessor">#include <sys/shm.h></font>
00038 <font class="preprocessor">#include <iostream></font>
00039
00040 <font class="preprocessor">#include <util/group/globcnt.h></font>
00041 <font class="preprocessor">#include <util/group/memmsg.h></font>
00042
00043 <font class="preprocessor">#include <util/group/rnglock.h></font>
00044
00045 <font class="keyword">namespace </font>sc {
00046
<a name="l00050"></a><a class="code" href="class_sc__ShmMemoryGrp.html">00050</a> <font class="keyword">class </font>ShmMemoryGrp: <font class="keyword">public</font> MsgMemoryGrp {
00051 <font class="keyword">private</font>:
00052 <font class="keywordtype">int</font> nregion_;
00053 <font class="keywordtype">int</font> *shmid_;
00054 <font class="keywordtype">void</font> **attach_address_;
00055 GlobalCounter lock_;
00056 GlobalCounter *update_;
00057 <font class="keywordtype">void</font> *data_;
00058 <font class="keywordtype">void</font> *memory_;
00059 Pool *pool_;
00060 RangeLock *rangelock_; <font class="comment">// the locks_ member of the base class is ignored</font>
00061
00062 <font class="keywordtype">void</font> clear_release_count();
00063 <font class="keywordtype">void</font> wait_for_release();
00064 <font class="keywordtype">void</font> note_release();
00065 <font class="keywordtype">void</font> obtain_lock();
00066 <font class="keywordtype">void</font> release_lock();
00067
00068 <font class="keywordtype">void</font> cleanup();
00069 <font class="keywordtype">int</font> attach_memory(<font class="keywordtype">void</font> *ataddress, <font class="keywordtype">int</font> size);
00070 <font class="keywordtype">void</font> detach_memory();
00071 <font class="keyword">public</font>:
00072 ShmMemoryGrp(<font class="keyword">const</font> Ref<MessageGrp>& msg);
00073 ShmMemoryGrp(<font class="keyword">const</font> Ref<KeyVal>&);
00074 ~ShmMemoryGrp();
00075
00076 <font class="keywordtype">void</font> <a class="code" href="class_sc__ShmMemoryGrp.html#a3">set_localsize</a>(size_t);
00077 <font class="keywordtype">void</font> *<a class="code" href="class_sc__ShmMemoryGrp.html#a4">localdata</a>();
00078
00079 <font class="keywordtype">void</font> *<a class="code" href="class_sc__ShmMemoryGrp.html#a5">obtain_readwrite</a>(distsize_t offset, <font class="keywordtype">int</font> size);
00080 <font class="keywordtype">void</font> *<a class="code" href="class_sc__ShmMemoryGrp.html#a6">obtain_readonly</a>(distsize_t offset, <font class="keywordtype">int</font> size);
00081 <font class="keywordtype">void</font> *<a class="code" href="class_sc__ShmMemoryGrp.html#a7">obtain_writeonly</a>(distsize_t offset, <font class="keywordtype">int</font> size);
00082 <font class="keywordtype">void</font> <a class="code" href="class_sc__ShmMemoryGrp.html#a8">release_readonly</a>(<font class="keywordtype">void</font> *data, distsize_t offset, <font class="keywordtype">int</font> size);
00083 <font class="keywordtype">void</font> <a class="code" href="class_sc__ShmMemoryGrp.html#a9">release_writeonly</a>(<font class="keywordtype">void</font> *data, distsize_t offset, <font class="keywordtype">int</font> size);
00084 <font class="keywordtype">void</font> <a class="code" href="class_sc__ShmMemoryGrp.html#a10">release_readwrite</a>(<font class="keywordtype">void</font> *data, distsize_t offset, <font class="keywordtype">int</font> size);
00085
00086 <font class="keywordtype">void</font> <a class="code" href="class_sc__ShmMemoryGrp.html#a11">print</a>(std::ostream &o = ExEnv::out0()) <font class="keyword">const</font>;
00087 };
00088
00089 }
00090
00091 <font class="preprocessor">#endif</font>
00092 <font class="preprocessor"></font>
00093 <font class="comment">// Local Variables:</font>
00094 <font class="comment">// mode: c++</font>
00095 <font class="comment">// c-file-style: "CLJ"</font>
00096 <font class="comment">// End:</font>
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