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| <h1>mutex.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"> Copyright 2005-2010 Intel Corporation. All Rights Reserved.</span> |
| <a name="l00003"></a>00003 <span class="comment"></span> |
| <a name="l00004"></a>00004 <span class="comment"> The source code contained or described herein and all documents related</span> |
| <a name="l00005"></a>00005 <span class="comment"> to the source code ("Material") are owned by Intel Corporation or its</span> |
| <a name="l00006"></a>00006 <span class="comment"> suppliers or licensors. Title to the Material remains with Intel</span> |
| <a name="l00007"></a>00007 <span class="comment"> Corporation or its suppliers and licensors. The Material is protected</span> |
| <a name="l00008"></a>00008 <span class="comment"> by worldwide copyright laws and treaty provisions. No part of the</span> |
| <a name="l00009"></a>00009 <span class="comment"> Material may be used, copied, reproduced, modified, published, uploaded,</span> |
| <a name="l00010"></a>00010 <span class="comment"> posted, transmitted, distributed, or disclosed in any way without</span> |
| <a name="l00011"></a>00011 <span class="comment"> Intel's prior express written permission.</span> |
| <a name="l00012"></a>00012 <span class="comment"></span> |
| <a name="l00013"></a>00013 <span class="comment"> No license under any patent, copyright, trade secret or other</span> |
| <a name="l00014"></a>00014 <span class="comment"> intellectual property right is granted to or conferred upon you by</span> |
| <a name="l00015"></a>00015 <span class="comment"> disclosure or delivery of the Materials, either expressly, by</span> |
| <a name="l00016"></a>00016 <span class="comment"> implication, inducement, estoppel or otherwise. Any license under such</span> |
| <a name="l00017"></a>00017 <span class="comment"> intellectual property rights must be express and approved by Intel in</span> |
| <a name="l00018"></a>00018 <span class="comment"> writing.</span> |
| <a name="l00019"></a>00019 <span class="comment">*/</span> |
| <a name="l00020"></a>00020 |
| <a name="l00021"></a>00021 <span class="preprocessor">#ifndef __TBB_mutex_H</span> |
| <a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define __TBB_mutex_H</span> |
| <a name="l00023"></a>00023 <span class="preprocessor"></span> |
| <a name="l00024"></a>00024 <span class="preprocessor">#if _WIN32||_WIN64</span> |
| <a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor"> #include <windows.h></span> |
| <a name="l00026"></a>00026 <span class="preprocessor"> #if !defined(_WIN32_WINNT)</span> |
| <a name="l00027"></a>00027 <span class="preprocessor"></span> <span class="comment">// The following Windows API function is declared explicitly;</span> |
| <a name="l00028"></a>00028 <span class="comment">// otherwise any user would have to specify /D_WIN32_WINNT=0x0400</span> |
| <a name="l00029"></a>00029 <span class="keyword">extern</span> <span class="stringliteral">"C"</span> BOOL WINAPI TryEnterCriticalSection( LPCRITICAL_SECTION ); |
| <a name="l00030"></a>00030 <span class="preprocessor"> #endif</span> |
| <a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#else </span><span class="comment">/* if not _WIN32||_WIN64 */</span> |
| <a name="l00032"></a>00032 <span class="preprocessor"> #include <pthread.h></span> |
| <a name="l00033"></a>00033 <span class="preprocessor">#endif </span><span class="comment">/* _WIN32||_WIN64 */</span> |
| <a name="l00034"></a>00034 |
| <a name="l00035"></a>00035 <span class="preprocessor">#include <new></span> |
| <a name="l00036"></a>00036 <span class="preprocessor">#include "aligned_space.h"</span> |
| <a name="l00037"></a>00037 <span class="preprocessor">#include "tbb_stddef.h"</span> |
| <a name="l00038"></a>00038 <span class="preprocessor">#include "tbb_profiling.h"</span> |
| <a name="l00039"></a>00039 |
| <a name="l00040"></a>00040 <span class="keyword">namespace </span>tbb { |
| <a name="l00041"></a>00041 |
| <a name="l00043"></a>00043 |
| <a name="l00045"></a><a class="code" href="a00172.html">00045</a> <span class="keyword">class </span><a class="code" href="a00172.html">mutex</a> { |
| <a name="l00046"></a>00046 <span class="keyword">public</span>: |
| <a name="l00048"></a><a class="code" href="a00172.html#05313cb77d4f85213103d4dab74ed454">00048</a> <a class="code" href="a00172.html#05313cb77d4f85213103d4dab74ed454">mutex</a>() { |
| <a name="l00049"></a>00049 <span class="preprocessor">#if TBB_USE_ASSERT || TBB_USE_THREADING_TOOLS</span> |
| <a name="l00050"></a>00050 <span class="preprocessor"></span> internal_construct(); |
| <a name="l00051"></a>00051 <span class="preprocessor">#else</span> |
| <a name="l00052"></a>00052 <span class="preprocessor"></span><span class="preprocessor"> #if _WIN32||_WIN64</span> |
| <a name="l00053"></a>00053 <span class="preprocessor"></span> InitializeCriticalSection(&impl); |
| <a name="l00054"></a>00054 <span class="preprocessor"> #else</span> |
| <a name="l00055"></a>00055 <span class="preprocessor"></span> <span class="keywordtype">int</span> error_code = pthread_mutex_init(&impl,NULL); |
| <a name="l00056"></a>00056 <span class="keywordflow">if</span>( error_code ) |
| <a name="l00057"></a>00057 tbb::internal::handle_perror(error_code,<span class="stringliteral">"mutex: pthread_mutex_init failed"</span>); |
| <a name="l00058"></a>00058 <span class="preprocessor"> #endif </span><span class="comment">/* _WIN32||_WIN64*/</span> |
| <a name="l00059"></a>00059 <span class="preprocessor">#endif </span><span class="comment">/* TBB_USE_ASSERT */</span> |
| <a name="l00060"></a>00060 }; |
| <a name="l00061"></a>00061 |
| <a name="l00062"></a>00062 ~<a class="code" href="a00172.html">mutex</a>() { |
| <a name="l00063"></a>00063 <span class="preprocessor">#if TBB_USE_ASSERT</span> |
| <a name="l00064"></a>00064 <span class="preprocessor"></span> internal_destroy(); |
| <a name="l00065"></a>00065 <span class="preprocessor">#else</span> |
| <a name="l00066"></a>00066 <span class="preprocessor"></span><span class="preprocessor"> #if _WIN32||_WIN64</span> |
| <a name="l00067"></a>00067 <span class="preprocessor"></span> DeleteCriticalSection(&impl); |
| <a name="l00068"></a>00068 <span class="preprocessor"> #else</span> |
| <a name="l00069"></a>00069 <span class="preprocessor"></span> pthread_mutex_destroy(&impl); |
| <a name="l00070"></a>00070 |
| <a name="l00071"></a>00071 <span class="preprocessor"> #endif </span><span class="comment">/* _WIN32||_WIN64 */</span> |
| <a name="l00072"></a>00072 <span class="preprocessor">#endif </span><span class="comment">/* TBB_USE_ASSERT */</span> |
| <a name="l00073"></a>00073 }; |
| <a name="l00074"></a>00074 |
| <a name="l00075"></a>00075 <span class="keyword">class </span>scoped_lock; |
| <a name="l00076"></a>00076 <span class="keyword">friend</span> <span class="keyword">class </span>scoped_lock; |
| <a name="l00077"></a>00077 |
| <a name="l00079"></a>00079 |
| <a name="l00081"></a><a class="code" href="a00173.html">00081</a> <span class="keyword">class </span><a class="code" href="a00173.html">scoped_lock</a> : internal::no_copy { |
| <a name="l00082"></a>00082 <span class="keyword">public</span>: |
| <a name="l00084"></a><a class="code" href="a00173.html#1d403ae51b484df5d86d85ae38f11e6e">00084</a> <a class="code" href="a00173.html#1d403ae51b484df5d86d85ae38f11e6e">scoped_lock</a>() : my_mutex(NULL) {}; |
| <a name="l00085"></a>00085 |
| <a name="l00087"></a><a class="code" href="a00173.html#605a6b9af0f8cdabdf81825e0de99600">00087</a> <a class="code" href="a00173.html#1d403ae51b484df5d86d85ae38f11e6e">scoped_lock</a>( <a class="code" href="a00172.html">mutex</a>& <a class="code" href="a00172.html">mutex</a> ) { |
| <a name="l00088"></a>00088 <a class="code" href="a00173.html#862e022841cdc522e4296a5533b22efd">acquire</a>( mutex ); |
| <a name="l00089"></a>00089 } |
| <a name="l00090"></a>00090 |
| <a name="l00092"></a><a class="code" href="a00173.html#0ebbbecaf4311e9df7362cb76ceaa368">00092</a> <a class="code" href="a00173.html#0ebbbecaf4311e9df7362cb76ceaa368">~scoped_lock</a>() { |
| <a name="l00093"></a>00093 <span class="keywordflow">if</span>( my_mutex ) |
| <a name="l00094"></a>00094 <a class="code" href="a00173.html#0d51d18cd99df3b2e93bf07378d0992c">release</a>(); |
| <a name="l00095"></a>00095 } |
| <a name="l00096"></a>00096 |
| <a name="l00098"></a><a class="code" href="a00173.html#862e022841cdc522e4296a5533b22efd">00098</a> <span class="keywordtype">void</span> <a class="code" href="a00173.html#862e022841cdc522e4296a5533b22efd">acquire</a>( <a class="code" href="a00172.html">mutex</a>& <a class="code" href="a00172.html">mutex</a> ) { |
| <a name="l00099"></a>00099 <span class="preprocessor">#if TBB_USE_ASSERT</span> |
| <a name="l00100"></a>00100 <span class="preprocessor"></span> internal_acquire(mutex); |
| <a name="l00101"></a>00101 <span class="preprocessor">#else</span> |
| <a name="l00102"></a>00102 <span class="preprocessor"></span> mutex.<a class="code" href="a00172.html#4470e61c24c129a0299ca6c17240adbb">lock</a>(); |
| <a name="l00103"></a>00103 my_mutex = &mutex; |
| <a name="l00104"></a>00104 <span class="preprocessor">#endif </span><span class="comment">/* TBB_USE_ASSERT */</span> |
| <a name="l00105"></a>00105 } |
| <a name="l00106"></a>00106 |
| <a name="l00108"></a><a class="code" href="a00173.html#591e0c49b82bcedffcbe0923f1b915ec">00108</a> <span class="keywordtype">bool</span> <a class="code" href="a00173.html#591e0c49b82bcedffcbe0923f1b915ec">try_acquire</a>( <a class="code" href="a00172.html">mutex</a>& <a class="code" href="a00172.html">mutex</a> ) { |
| <a name="l00109"></a>00109 <span class="preprocessor">#if TBB_USE_ASSERT</span> |
| <a name="l00110"></a>00110 <span class="preprocessor"></span> <span class="keywordflow">return</span> internal_try_acquire (mutex); |
| <a name="l00111"></a>00111 <span class="preprocessor">#else</span> |
| <a name="l00112"></a>00112 <span class="preprocessor"></span> <span class="keywordtype">bool</span> result = mutex.<a class="code" href="a00172.html#4331652c79dea1c1131bd59ab161b234">try_lock</a>(); |
| <a name="l00113"></a>00113 <span class="keywordflow">if</span>( result ) |
| <a name="l00114"></a>00114 my_mutex = &mutex; |
| <a name="l00115"></a>00115 <span class="keywordflow">return</span> result; |
| <a name="l00116"></a>00116 <span class="preprocessor">#endif </span><span class="comment">/* TBB_USE_ASSERT */</span> |
| <a name="l00117"></a>00117 } |
| <a name="l00118"></a>00118 |
| <a name="l00120"></a><a class="code" href="a00173.html#0d51d18cd99df3b2e93bf07378d0992c">00120</a> <span class="keywordtype">void</span> <a class="code" href="a00173.html#0d51d18cd99df3b2e93bf07378d0992c">release</a>() { |
| <a name="l00121"></a>00121 <span class="preprocessor">#if TBB_USE_ASSERT</span> |
| <a name="l00122"></a>00122 <span class="preprocessor"></span> internal_release (); |
| <a name="l00123"></a>00123 <span class="preprocessor">#else</span> |
| <a name="l00124"></a>00124 <span class="preprocessor"></span> my_mutex-><a class="code" href="a00172.html#5fc9ef443ae75d966695546be399cc6b">unlock</a>(); |
| <a name="l00125"></a>00125 my_mutex = NULL; |
| <a name="l00126"></a>00126 <span class="preprocessor">#endif </span><span class="comment">/* TBB_USE_ASSERT */</span> |
| <a name="l00127"></a>00127 } |
| <a name="l00128"></a>00128 |
| <a name="l00129"></a>00129 <span class="keyword">private</span>: |
| <a name="l00131"></a>00131 <a class="code" href="a00172.html">mutex</a>* my_mutex; |
| <a name="l00132"></a>00132 |
| <a name="l00134"></a>00134 <span class="keywordtype">void</span> __TBB_EXPORTED_METHOD internal_acquire( <a class="code" href="a00172.html">mutex</a>& m ); |
| <a name="l00135"></a>00135 |
| <a name="l00137"></a>00137 <span class="keywordtype">bool</span> __TBB_EXPORTED_METHOD internal_try_acquire( <a class="code" href="a00172.html">mutex</a>& m ); |
| <a name="l00138"></a>00138 |
| <a name="l00140"></a>00140 <span class="keywordtype">void</span> __TBB_EXPORTED_METHOD internal_release(); |
| <a name="l00141"></a>00141 |
| <a name="l00142"></a>00142 <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="a00172.html">mutex</a>; |
| <a name="l00143"></a>00143 }; |
| <a name="l00144"></a>00144 |
| <a name="l00145"></a>00145 <span class="comment">// Mutex traits</span> |
| <a name="l00146"></a>00146 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> is_rw_mutex = <span class="keyword">false</span>; |
| <a name="l00147"></a>00147 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> is_recursive_mutex = <span class="keyword">false</span>; |
| <a name="l00148"></a>00148 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> is_fair_mutex = <span class="keyword">false</span>; |
| <a name="l00149"></a>00149 |
| <a name="l00150"></a>00150 <span class="comment">// ISO C++0x compatibility methods</span> |
| <a name="l00151"></a>00151 |
| <a name="l00153"></a><a class="code" href="a00172.html#4470e61c24c129a0299ca6c17240adbb">00153</a> <span class="keywordtype">void</span> <a class="code" href="a00172.html#4470e61c24c129a0299ca6c17240adbb">lock</a>() { |
| <a name="l00154"></a>00154 <span class="preprocessor">#if TBB_USE_ASSERT</span> |
| <a name="l00155"></a>00155 <span class="preprocessor"></span> <a class="code" href="a00142.html">aligned_space<scoped_lock,1></a> tmp; |
| <a name="l00156"></a>00156 <span class="keyword">new</span>(tmp.<a class="code" href="a00142.html#0d702fc6b9e9d061ace3501b3c861cdf">begin</a>()) <a class="code" href="a00173.html">scoped_lock</a>(*<span class="keyword">this</span>); |
| <a name="l00157"></a>00157 <span class="preprocessor">#else</span> |
| <a name="l00158"></a>00158 <span class="preprocessor"></span><span class="preprocessor"> #if _WIN32||_WIN64</span> |
| <a name="l00159"></a>00159 <span class="preprocessor"></span> EnterCriticalSection(&impl); |
| <a name="l00160"></a>00160 <span class="preprocessor"> #else</span> |
| <a name="l00161"></a>00161 <span class="preprocessor"></span> pthread_mutex_lock(&impl); |
| <a name="l00162"></a>00162 <span class="preprocessor"> #endif </span><span class="comment">/* _WIN32||_WIN64 */</span> |
| <a name="l00163"></a>00163 <span class="preprocessor">#endif </span><span class="comment">/* TBB_USE_ASSERT */</span> |
| <a name="l00164"></a>00164 } |
| <a name="l00165"></a>00165 |
| <a name="l00167"></a>00167 |
| <a name="l00168"></a><a class="code" href="a00172.html#4331652c79dea1c1131bd59ab161b234">00168</a> <span class="keywordtype">bool</span> <a class="code" href="a00172.html#4331652c79dea1c1131bd59ab161b234">try_lock</a>() { |
| <a name="l00169"></a>00169 <span class="preprocessor">#if TBB_USE_ASSERT</span> |
| <a name="l00170"></a>00170 <span class="preprocessor"></span> <a class="code" href="a00142.html">aligned_space<scoped_lock,1></a> tmp; |
| <a name="l00171"></a>00171 <a class="code" href="a00173.html">scoped_lock</a>& s = *tmp.<a class="code" href="a00142.html#0d702fc6b9e9d061ace3501b3c861cdf">begin</a>(); |
| <a name="l00172"></a>00172 s.<a class="code" href="a00173.html#be42c8fe11cce1af4fe1e9eaab717567">my_mutex</a> = NULL; |
| <a name="l00173"></a>00173 <span class="keywordflow">return</span> s.<a class="code" href="a00173.html#e86ffb41a026694b16637f78aa337874">internal_try_acquire</a>(*<span class="keyword">this</span>); |
| <a name="l00174"></a>00174 <span class="preprocessor">#else</span> |
| <a name="l00175"></a>00175 <span class="preprocessor"></span><span class="preprocessor"> #if _WIN32||_WIN64</span> |
| <a name="l00176"></a>00176 <span class="preprocessor"></span> <span class="keywordflow">return</span> TryEnterCriticalSection(&impl)!=0; |
| <a name="l00177"></a>00177 <span class="preprocessor"> #else</span> |
| <a name="l00178"></a>00178 <span class="preprocessor"></span> <span class="keywordflow">return</span> pthread_mutex_trylock(&impl)==0; |
| <a name="l00179"></a>00179 <span class="preprocessor"> #endif </span><span class="comment">/* _WIN32||_WIN64 */</span> |
| <a name="l00180"></a>00180 <span class="preprocessor">#endif </span><span class="comment">/* TBB_USE_ASSERT */</span> |
| <a name="l00181"></a>00181 } |
| <a name="l00182"></a>00182 |
| <a name="l00184"></a><a class="code" href="a00172.html#5fc9ef443ae75d966695546be399cc6b">00184</a> <span class="keywordtype">void</span> <a class="code" href="a00172.html#5fc9ef443ae75d966695546be399cc6b">unlock</a>() { |
| <a name="l00185"></a>00185 <span class="preprocessor">#if TBB_USE_ASSERT</span> |
| <a name="l00186"></a>00186 <span class="preprocessor"></span> <a class="code" href="a00142.html">aligned_space<scoped_lock,1></a> tmp; |
| <a name="l00187"></a>00187 <a class="code" href="a00173.html">scoped_lock</a>& s = *tmp.<a class="code" href="a00142.html#0d702fc6b9e9d061ace3501b3c861cdf">begin</a>(); |
| <a name="l00188"></a>00188 s.<a class="code" href="a00173.html#be42c8fe11cce1af4fe1e9eaab717567">my_mutex</a> = <span class="keyword">this</span>; |
| <a name="l00189"></a>00189 s.<a class="code" href="a00173.html#448b7e9042afcdc455ea3f929ac4c594">internal_release</a>(); |
| <a name="l00190"></a>00190 <span class="preprocessor">#else</span> |
| <a name="l00191"></a>00191 <span class="preprocessor"></span><span class="preprocessor"> #if _WIN32||_WIN64</span> |
| <a name="l00192"></a>00192 <span class="preprocessor"></span> LeaveCriticalSection(&impl); |
| <a name="l00193"></a>00193 <span class="preprocessor"> #else</span> |
| <a name="l00194"></a>00194 <span class="preprocessor"></span> pthread_mutex_unlock(&impl); |
| <a name="l00195"></a>00195 <span class="preprocessor"> #endif </span><span class="comment">/* _WIN32||_WIN64 */</span> |
| <a name="l00196"></a>00196 <span class="preprocessor">#endif </span><span class="comment">/* TBB_USE_ASSERT */</span> |
| <a name="l00197"></a>00197 } |
| <a name="l00198"></a>00198 |
| <a name="l00200"></a>00200 <span class="preprocessor"> #if _WIN32||_WIN64</span> |
| <a name="l00201"></a><a class="code" href="a00172.html#9f1ec84d5815263ceae853f06ddb4cac">00201</a> <span class="preprocessor"></span> <span class="keyword">typedef</span> LPCRITICAL_SECTION <a class="code" href="a00172.html#9f1ec84d5815263ceae853f06ddb4cac">native_handle_type</a>; |
| <a name="l00202"></a>00202 <span class="preprocessor"> #else</span> |
| <a name="l00203"></a>00203 <span class="preprocessor"></span> <span class="keyword">typedef</span> pthread_mutex_t* <a class="code" href="a00172.html#9f1ec84d5815263ceae853f06ddb4cac">native_handle_type</a>; |
| <a name="l00204"></a>00204 <span class="preprocessor"> #endif</span> |
| <a name="l00205"></a>00205 <span class="preprocessor"></span> <a class="code" href="a00172.html#9f1ec84d5815263ceae853f06ddb4cac">native_handle_type</a> native_handle() { <span class="keywordflow">return</span> (<a class="code" href="a00172.html#9f1ec84d5815263ceae853f06ddb4cac">native_handle_type</a>) &impl; } |
| <a name="l00206"></a>00206 |
| <a name="l00207"></a>00207 <span class="keyword">enum</span> state_t { |
| <a name="l00208"></a>00208 INITIALIZED=0x1234, |
| <a name="l00209"></a>00209 DESTROYED=0x789A, |
| <a name="l00210"></a>00210 HELD=0x56CD |
| <a name="l00211"></a>00211 }; |
| <a name="l00212"></a>00212 <span class="keyword">private</span>: |
| <a name="l00213"></a>00213 <span class="preprocessor">#if _WIN32||_WIN64</span> |
| <a name="l00214"></a>00214 <span class="preprocessor"></span> CRITICAL_SECTION impl; |
| <a name="l00215"></a>00215 <span class="keyword">enum</span> state_t state; |
| <a name="l00216"></a>00216 <span class="preprocessor">#else</span> |
| <a name="l00217"></a>00217 <span class="preprocessor"></span> pthread_mutex_t impl; |
| <a name="l00218"></a>00218 <span class="preprocessor">#endif </span><span class="comment">/* _WIN32||_WIN64 */</span> |
| <a name="l00219"></a>00219 |
| <a name="l00221"></a>00221 <span class="keywordtype">void</span> __TBB_EXPORTED_METHOD internal_construct(); |
| <a name="l00222"></a>00222 |
| <a name="l00224"></a>00224 <span class="keywordtype">void</span> __TBB_EXPORTED_METHOD internal_destroy(); |
| <a name="l00225"></a>00225 |
| <a name="l00226"></a>00226 <span class="preprocessor">#if _WIN32||_WIN64</span> |
| <a name="l00227"></a>00227 <span class="preprocessor"></span><span class="keyword">public</span>: |
| <a name="l00229"></a><a class="code" href="a00172.html#795649a185b0d6af6dc81c5f378616dd">00229</a> <span class="keywordtype">void</span> <a class="code" href="a00172.html#795649a185b0d6af6dc81c5f378616dd">set_state</a>( state_t to ) { state = to; } |
| <a name="l00230"></a>00230 <span class="preprocessor">#endif</span> |
| <a name="l00231"></a>00231 <span class="preprocessor"></span>}; |
| <a name="l00232"></a>00232 |
| <a name="l00233"></a>00233 __TBB_DEFINE_PROFILING_SET_NAME(mutex) |
| <a name="l00234"></a>00234 |
| <a name="l00235"></a>00235 } <span class="comment">// namespace tbb </span> |
| <a name="l00236"></a>00236 |
| <a name="l00237"></a>00237 <span class="preprocessor">#endif </span><span class="comment">/* __TBB_mutex_H */</span> |
| </pre></div><hr> |
| <p></p> |
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