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| author | neodarz <neodarz@neodarz.net> | 2018-08-11 20:21:34 +0200 |
|---|---|---|
| committer | neodarz <neodarz@neodarz.net> | 2018-08-11 20:21:34 +0200 |
| commit | 0ea5fc66924303d1bf73ba283a383e2aadee02f2 (patch) | |
| tree | 2568e71a7ccc44ec23b8bb3f0ff97fb6bf2ed709 /docs/doxygen/nel/mutex_8h-source.html | |
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+</td></tr></table> + + +<!-- block --> +<TABLE bgcolor="#dddddd" CELLSPACING=0 CELLPADDING=0 BORDER=0 width=100%><tr><td width=1% valign=middle><img width=6 height=14 hspace=2 vspace=2 src="http://www.nevrax.org/inc/img/reddots.gif"></TD> + <TD><B>Documentation</B></TD> + <TD ALIGN=RIGHT> </td> +</tr></table> +<!-- Generated by Doxygen 1.2.14 --> +<center> +<a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="namespaces.html">Namespace List</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="classes.html">Alphabetical List</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="namespacemembers.html">Namespace Members</a> <a class="qindex" href="functions.html">Compound Members</a> <a class="qindex" href="globals.html">File Members</a> <a class="qindex" href="pages.html">Related Pages</a> <a class="qindexRef" doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<hr><h1>mutex.h</h1><a href="mutex_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 +00008 <font class="comment">/* Copyright, 2000 Nevrax Ltd.</font> +00009 <font class="comment"> *</font> +00010 <font class="comment"> * This file is part of NEVRAX NEL.</font> +00011 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font> +00012 <font class="comment"> * it under the terms of the GNU 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"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font> +00017 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font> +00018 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font> +00019 <font class="comment"> * 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 General Public License</font> +00022 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font> +00023 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font> +00024 <font class="comment"> * MA 02111-1307, USA.</font> +00025 <font class="comment"> */</font> +00026 +00027 <font class="preprocessor">#ifndef NL_MUTEX_H</font> +00028 <font class="preprocessor"></font><font class="preprocessor">#define NL_MUTEX_H</font> +00029 <font class="preprocessor"></font> +00030 <font class="preprocessor">#include "<a class="code" href="types__nl_8h.html">nel/misc/types_nl.h</a>"</font> +00031 <font class="preprocessor">#include "<a class="code" href="time__nl_8h.html">nel/misc/time_nl.h</a>"</font> +00032 <font class="preprocessor">#include <map></font> +00033 +00034 <font class="preprocessor">#ifdef NL_OS_UNIX</font> +00035 <font class="preprocessor"></font><font class="preprocessor">#include <pthread.h></font> +00036 <font class="preprocessor">#include <semaphore.h></font> +00037 <font class="preprocessor">#endif</font> +00038 <font class="preprocessor"></font> +00039 <font class="preprocessor">#undef MUTEX_DEBUG</font> +00040 <font class="preprocessor"></font> +00041 +00042 <font class="keyword">namespace </font>NLMISC { +00043 +00044 <font class="comment">// By default, all mutex use the CFairMutex class to avoid freeze problem.</font> +<a name="l00045"></a><a class="code" href="mutex_8h.html#a0">00045</a> <font class="preprocessor">#define CMutex CFairMutex</font> +00046 <font class="preprocessor"></font> +<a name="l00064"></a><a class="code" href="classNLMISC_1_1CUnfairMutex.html">00064</a> <font class="keyword">class </font>CUnfairMutex +00065 { +00066 <font class="keyword">public</font>: +00067 +00069 <a class="code" href="classNLMISC_1_1CUnfairMutex.html#a0">CUnfairMutex</a>(); +00070 <a class="code" href="classNLMISC_1_1CUnfairMutex.html#a0">CUnfairMutex</a>(<font class="keyword">const</font> std::string &name); +00071 +00073 <a class="code" href="classNLMISC_1_1CUnfairMutex.html#a2">~CUnfairMutex</a>(); +00074 +00075 <font class="keywordtype">void</font> <a class="code" href="classNLMISC_1_1CUnfairMutex.html#a3">enter</a> (); +00076 <font class="keywordtype">void</font> <a class="code" href="classNLMISC_1_1CUnfairMutex.html#a4">leave</a> (); +00077 +00078 <font class="keyword">private</font>: +00079 +00080 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font> +00081 <font class="preprocessor"></font> <font class="keywordtype">void</font> *Mutex; +00082 <font class="preprocessor">#elif defined NL_OS_UNIX</font> +00083 <font class="preprocessor"></font> pthread_mutex_t mutex; +00084 <font class="preprocessor">#else</font> +00085 <font class="preprocessor"></font><font class="preprocessor"># error "No unfair mutex implementation for this OS"</font> +00086 <font class="preprocessor"></font><font class="preprocessor">#endif</font> +00087 <font class="preprocessor"></font> +00088 }; +00089 +00090 +00091 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font> +00092 <font class="preprocessor"></font> +00097 <font class="keyword">struct </font>TNelRtlCriticalSection { +00098 <font class="keywordtype">void</font> *DebugInfo; +00099 <font class="keywordtype">long</font> LockCount; +00100 <font class="keywordtype">long</font> RecursionCount; +00101 <font class="keywordtype">void</font> *OwningThread; <font class="comment">// from the thread's ClientId->UniqueThread</font> +00102 <font class="keywordtype">void</font> *LockSemaphore; +00103 <a class="code" href="types__nl_8h.html#a10">uint32</a> SpinCount; +00104 }; +00105 <font class="preprocessor">#endif // NL_OS_WINDOWS</font> +00106 <font class="preprocessor"></font> +00107 +<a name="l00131"></a><a class="code" href="classNLMISC_1_1CFairMutex.html">00131</a> <font class="keyword">class </font>CFairMutex +00132 { +00133 <font class="keyword">public</font>: +00134 +00136 <a class="code" href="classNLMISC_1_1CFairMutex.html#a0">CFairMutex</a>(); +00137 <a class="code" href="classNLMISC_1_1CFairMutex.html#a0">CFairMutex</a>(<font class="keyword">const</font> std::string &name); +00138 +00140 <a class="code" href="classNLMISC_1_1CFairMutex.html#a2">~CFairMutex</a>(); +00141 +00142 <font class="keywordtype">void</font> <a class="code" href="classNLMISC_1_1CFairMutex.html#a3">enter</a> (); +00143 <font class="keywordtype">void</font> <a class="code" href="classNLMISC_1_1CFairMutex.html#a4">leave</a> (); +00144 +<a name="l00145"></a><a class="code" href="classNLMISC_1_1CFairMutex.html#m0">00145</a> std::string <a class="code" href="classNLMISC_1_1CFairMutex.html#m0">Name</a>; +00146 +00147 <font class="keyword">private</font>: +00148 +00149 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font> +00150 <font class="preprocessor"></font> TNelRtlCriticalSection _Cs; +00151 <font class="preprocessor">#elif defined NL_OS_UNIX</font> +00152 <font class="preprocessor"></font> <font class="keyword">volatile</font> sem_t _Sem; +00153 <font class="preprocessor">#else</font> +00154 <font class="preprocessor"></font><font class="preprocessor"># error "No fair mutex implementation for this OS"</font> +00155 <font class="preprocessor"></font><font class="preprocessor">#endif</font> +00156 <font class="preprocessor"></font> +00157 +00158 <font class="preprocessor">#ifdef MUTEX_DEBUG</font> +00159 <font class="preprocessor"></font> <font class="comment">// debug stuffs</font> +00160 <font class="keywordtype">void</font> <a class="code" href="mutex_8cpp.html#a0">debugCreateMutex</a>(); +00161 <font class="keywordtype">void</font> <a class="code" href="mutex_8cpp.html#a1">debugBeginEnter</a>(); +00162 <font class="keywordtype">void</font> <a class="code" href="mutex_8cpp.html#a2">debugEndEnter</a>(); +00163 <font class="keywordtype">void</font> <a class="code" href="mutex_8cpp.html#a3">debugLeave</a>(); +00164 <font class="keywordtype">void</font> <a class="code" href="mutex_8cpp.html#a4">debugDeleteMutex</a>(); +00165 <font class="preprocessor">#endif // MUTEX_DEBUG</font> +00166 <font class="preprocessor"></font> +00167 }; +00168 +00169 +00170 +00171 +00172 +00173 +00174 <font class="comment">/*</font> +00175 <font class="comment"> * Debug info</font> +00176 <font class="comment"> */</font> +00177 <font class="preprocessor">#ifdef MUTEX_DEBUG</font> +00178 <font class="preprocessor"></font> +00179 <font class="keyword">struct </font>TMutexLocks +00180 { +00181 TMutexLocks(<a class="code" href="types__nl_8h.html#a10">uint32</a> m=0) : TimeToEnter(0), TimeInMutex(0), Nb(0), WaitingMutex(0), MutexNum(m), ThreadHavingTheMutex(0xFFFFFFFF), Dead(false) {} +00182 +00183 <a class="code" href="types__nl_8h.html#a10">uint32</a> TimeToEnter; <font class="comment">// cumulated time blocking on enter</font> +00184 <a class="code" href="types__nl_8h.html#a10">uint32</a> TimeInMutex; <font class="comment">// cumulated time between enter and leave</font> +00185 <a class="code" href="types__nl_8h.html#a10">uint32</a> Nb; <font class="comment">// number of calls of enter</font> +00186 <a class="code" href="types__nl_8h.html#a10">uint32</a> WaitingMutex; <font class="comment">// number of thread that waiting this mutex</font> +00187 <a class="code" href="types__nl_8h.html#a9">sint32</a> MutexNum; <font class="comment">// identifying a mutex</font> +00188 <a class="code" href="types__nl_8h.html#a14">uint</a> ThreadHavingTheMutex; <font class="comment">// thread id of the thread that is in this mutex (0xFFFFFFFF if no thread)</font> +00189 <font class="keywordtype">bool</font> Dead; <font class="comment">// True if the mutex is dead (deleted)</font> +00190 std::string MutexName; <font class="comment">// Name of the mutex</font> +00191 +00192 NLMISC::TTicks BeginEnter; +00193 NLMISC::TTicks EndEnter; +00194 }; +00195 +00197 <font class="keywordtype">void</font> initAcquireTimeMap(); +00198 +00200 std::map<CMutex*,TMutexLocks> getNewAcquireTimes(); +00201 +00203 <font class="keyword">extern</font> <a class="code" href="types__nl_8h.html#a10">uint32</a> NbMutexes; +00204 +00205 <font class="preprocessor">#endif // MUTEX_DEBUG</font> +00206 <font class="preprocessor"></font> +00207 +00208 +00209 +00210 +00211 <font class="comment">// By default, all synchronization use the CFairSynchronized class to avoid freeze problem.</font> +<a name="l00212"></a><a class="code" href="mutex_8h.html#a1">00212</a> <font class="preprocessor">#define CSynchronized CFairSynchronized</font> +00213 <font class="preprocessor"></font> +00235 <font class="keyword">template</font> <<font class="keyword">class</font> T> +<a name="l00236"></a><a class="code" href="classNLMISC_1_1CUnfairSynchronized.html">00236</a> <font class="keyword">class </font>CUnfairSynchronized +00237 { +00238 <font class="keyword">public</font>: +00239 +<a name="l00240"></a><a class="code" href="classNLMISC_1_1CUnfairSynchronized.html#a0">00240</a> <a class="code" href="classNLMISC_1_1CUnfairSynchronized.html#a0">CUnfairSynchronized</a> (<font class="keyword">const</font> std::string &name) : <a class="code" href="classNLMISC_1_1CUnfairSynchronized.html#o0">_Mutex</a>(name) { } +00241 +<a name="l00245"></a><a class="code" href="classNLMISC_1_1CUnfairSynchronized_1_1CAccessor.html">00245</a> <font class="keyword">class </font>CAccessor +00246 { +<a name="l00247"></a><a class="code" href="classNLMISC_1_1CUnfairSynchronized_1_1CAccessor.html#o0">00247</a> CUnfairSynchronized<T> *<a class="code" href="classNLMISC_1_1CUnfairSynchronized_1_1CAccessor.html#o0">Synchronized</a>; +00248 <font class="keyword">public</font>: +00249 +<a name="l00251"></a><a class="code" href="classNLMISC_1_1CUnfairSynchronized_1_1CAccessor.html#a0">00251</a> <a class="code" href="classNLMISC_1_1CUnfairSynchronized_1_1CAccessor.html#a0">CAccessor</a>(CUnfairSynchronized<T> *cs) +00252 { +00253 Synchronized = cs; +00254 const_cast<CMutex&>(Synchronized->_Mutex).enter(); +00255 } +00256 +<a name="l00258"></a><a class="code" href="classNLMISC_1_1CUnfairSynchronized_1_1CAccessor.html#a1">00258</a> <a class="code" href="classNLMISC_1_1CUnfairSynchronized_1_1CAccessor.html#a1">~CAccessor</a>() +00259 { +00260 const_cast<CMutex&>(Synchronized->_Mutex).leave(); +00261 } +00262 +<a name="l00264"></a><a class="code" href="classNLMISC_1_1CUnfairSynchronized_1_1CAccessor.html#a2">00264</a> T &<a class="code" href="classNLMISC_1_1CUnfairSynchronized_1_1CAccessor.html#a2">value</a>() +00265 { +00266 <font class="keywordflow">return</font> const_cast<T&>(Synchronized->_Value); +00267 } +00268 }; +00269 +00270 <font class="keyword">private</font>: +00271 +<a name="l00272"></a><a class="code" href="classNLMISC_1_1CUnfairSynchronized.html#l0">00272</a> <font class="keyword">friend</font> <font class="keyword">class </font><a class="code" href="classNLMISC_1_1CUnfairSynchronized.html#a0">CUnfairSynchronized</a>::CAccessor; +00273 +<a name="l00275"></a><a class="code" href="classNLMISC_1_1CUnfairSynchronized.html#o0">00275</a> volatile CUnfairMutex <a class="code" href="classNLMISC_1_1CUnfairSynchronized.html#o0">_Mutex</a>; +00276 +<a name="l00278"></a><a class="code" href="classNLMISC_1_1CUnfairSynchronized.html#o1">00278</a> volatile T <a class="code" href="classNLMISC_1_1CUnfairSynchronized.html#o1">_Value</a>; +00279 }; +00280 +00281 +00290 template <class T> +<a name="l00291"></a><a class="code" href="classNLMISC_1_1CFairSynchronized.html">00291</a> class CFairSynchronized +00292 { +00293 <font class="keyword">public</font>: +00294 +<a name="l00295"></a><a class="code" href="classNLMISC_1_1CFairSynchronized.html#a0">00295</a> CFairSynchronized (<font class="keyword">const</font> std::string &name) : _Cs(name) { } +00296 +<a name="l00300"></a><a class="code" href="classNLMISC_1_1CFairSynchronized_1_1CAccessor.html">00300</a> <font class="keyword">class </font>CAccessor +00301 { +<a name="l00302"></a><a class="code" href="classNLMISC_1_1CFairSynchronized_1_1CAccessor.html#o0">00302</a> CFairSynchronized<T> *Synchronized; +00303 <font class="keyword">public</font>: +00304 +<a name="l00306"></a><a class="code" href="classNLMISC_1_1CFairSynchronized_1_1CAccessor.html#a0">00306</a> CAccessor(CFairSynchronized<T> *cs) +00307 { +00308 Synchronized = cs; +00309 const_cast<CFairMutex&>(Synchronized->_Cs).enter(); +00310 } +00311 +<a name="l00313"></a><a class="code" href="classNLMISC_1_1CFairSynchronized_1_1CAccessor.html#a1">00313</a> ~CAccessor() +00314 { +00315 const_cast<CFairMutex&>(Synchronized->_Cs).leave(); +00316 } +00317 +<a name="l00319"></a><a class="code" href="classNLMISC_1_1CFairSynchronized_1_1CAccessor.html#a2">00319</a> T &<a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a>() +00320 { +00321 <font class="keywordflow">return</font> const_cast<T&>(Synchronized->_Value); +00322 } +00323 }; +00324 +00325 <font class="keyword">private</font>: +00326 +<a name="l00327"></a><a class="code" href="classNLMISC_1_1CFairSynchronized.html#l0">00327</a> <font class="keyword">friend</font> <font class="keyword">class </font>CFairSynchronized::CAccessor; +00328 +<a name="l00330"></a><a class="code" href="classNLMISC_1_1CFairSynchronized.html#o0">00330</a> volatile CFairMutex _Cs; +00331 +<a name="l00333"></a><a class="code" href="classNLMISC_1_1CFairSynchronized.html#o1">00333</a> volatile T _Value; +00334 }; +00335 +00336 } <font class="comment">// NLMISC</font> +00337 +00338 +00339 #endif <font class="comment">// NL_MUTEX_H</font> +00340 +00341 <font class="comment">/* End of mutex.h */</font> +</pre></div> + +<!-- footer --> +<BR><FONT Size=+5> </FONT> +</TD> +<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD> +</TR> +</TABLE> +</BODY> +</HTML> |