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<h1>csutil/threading/atomicops.h</h1><a href="atomicops_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> Copyright (C) 2006 by Marten Svanfeldt</span>
<a name="l00003"></a>00003 <span class="comment"></span>
<a name="l00004"></a>00004 <span class="comment"> This library is free software; you can redistribute it and/or</span>
<a name="l00005"></a>00005 <span class="comment"> modify it under the terms of the GNU Lesser General Public</span>
<a name="l00006"></a>00006 <span class="comment"> License as published by the Free Software Foundation; either</span>
<a name="l00007"></a>00007 <span class="comment"> version 2 of the License, or (at your option) any later version.</span>
<a name="l00008"></a>00008 <span class="comment"></span>
<a name="l00009"></a>00009 <span class="comment"> This library is distributed in the hope that it will be useful,</span>
<a name="l00010"></a>00010 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00011"></a>00011 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00012"></a>00012 <span class="comment"> Library General Public License for more details.</span>
<a name="l00013"></a>00013 <span class="comment"></span>
<a name="l00014"></a>00014 <span class="comment"> You should have received a copy of the GNU Library General Public</span>
<a name="l00015"></a>00015 <span class="comment"> License along with this library; if not, write to the Free</span>
<a name="l00016"></a>00016 <span class="comment"> Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.</span>
<a name="l00017"></a>00017 <span class="comment">*/</span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="preprocessor">#ifndef __CS_CSUTIL_ATOMICOPS_H__</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span><span class="preprocessor">#define __CS_CSUTIL_ATOMICOPS_H__</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span>
<a name="l00025"></a>00025 <span class="keyword">namespace </span>CS
<a name="l00026"></a>00026 {
<a name="l00027"></a><a class="code" href="namespaceCS_1_1Threading.html">00027</a> <span class="keyword">namespace </span>Threading
<a name="l00028"></a>00028 {
<a name="l00029"></a>00029
<a name="l00035"></a>00035 <span class="keyword">template</span><<span class="keyword">typename</span> Impl>
<a name="l00036"></a><a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html">00036</a> <span class="keyword">class </span><a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html" title="Define low-level atomic operations.">AtomicOperationsBase</a>
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038 <span class="keyword">public</span>:
<a name="l00042"></a>00042 <a class="code" href="cssysdef_8h.html#28e20ab0f0f6398b95a4c0674b65751e">CS_FORCEINLINE_TEMPLATEMETHOD</a>
<a name="l00043"></a><a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#5e82929a142c8bd4f69a067b24989edd">00043</a> <span class="keyword">static</span> <a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a> <a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#5e82929a142c8bd4f69a067b24989edd" title="Set value pointed to by target to value and return previous value.">Set</a> (<a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a>* target, <a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a> value)
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045 <span class="keywordflow">return</span> Impl::Set (target, value);
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047
<a name="l00051"></a>00051 <a class="code" href="cssysdef_8h.html#28e20ab0f0f6398b95a4c0674b65751e">CS_FORCEINLINE_TEMPLATEMETHOD</a>
<a name="l00052"></a><a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#4684b87f483886bce2d7a878ea12f018">00052</a> <span class="keyword">static</span> <span class="keywordtype">void</span>* <a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#5e82929a142c8bd4f69a067b24989edd" title="Set value pointed to by target to value and return previous value.">Set</a> ( <span class="keywordtype">void</span>** target, <span class="keywordtype">void</span>* value)
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 <span class="keywordflow">return</span> Impl::Set (target, value);
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056
<a name="l00062"></a>00062 <a class="code" href="cssysdef_8h.html#28e20ab0f0f6398b95a4c0674b65751e">CS_FORCEINLINE_TEMPLATEMETHOD</a>
<a name="l00063"></a><a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#6702b4cfd34450b116015f6281465049">00063</a> <span class="keyword">static</span> <a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a> <a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#6702b4cfd34450b116015f6281465049" title="Compare value pointed to by target with comparand, if they are equal set value pointed...">CompareAndSet</a> (<a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a>* target, <a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a> value,
<a name="l00064"></a>00064 <a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a> comparand)
<a name="l00065"></a>00065 {
<a name="l00066"></a>00066 <span class="keywordflow">return</span> Impl::CompareAndSet (target, value, comparand);
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068
<a name="l00074"></a>00074 <a class="code" href="cssysdef_8h.html#28e20ab0f0f6398b95a4c0674b65751e">CS_FORCEINLINE_TEMPLATEMETHOD</a>
<a name="l00075"></a><a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#2bd72f8102e1e5302c6a5a00c5b5e960">00075</a> <span class="keyword">static</span> <span class="keywordtype">void</span>* <a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#6702b4cfd34450b116015f6281465049" title="Compare value pointed to by target with comparand, if they are equal set value pointed...">CompareAndSet</a> (<span class="keywordtype">void</span>** target, <span class="keywordtype">void</span>* value,
<a name="l00076"></a>00076 <span class="keywordtype">void</span>* comparand)
<a name="l00077"></a>00077 {
<a name="l00078"></a>00078 <span class="keywordflow">return</span> Impl::CompareAndSet (target, value, comparand);
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00085"></a>00085 <a class="code" href="cssysdef_8h.html#28e20ab0f0f6398b95a4c0674b65751e">CS_FORCEINLINE_TEMPLATEMETHOD</a>
<a name="l00086"></a><a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#9f8998687c7be0033093aa676bc04e67">00086</a> <span class="keyword">static</span> <a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a> <a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#9f8998687c7be0033093aa676bc04e67" title="Atomically increment value pointed to by target.">Increment</a> (<a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a>* target)
<a name="l00087"></a>00087 {
<a name="l00088"></a>00088 <span class="keywordflow">return</span> Impl::Increment (target);
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090
<a name="l00095"></a>00095 <a class="code" href="cssysdef_8h.html#28e20ab0f0f6398b95a4c0674b65751e">CS_FORCEINLINE_TEMPLATEMETHOD</a>
<a name="l00096"></a><a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#c25d5d5252d6d6a0edcc6d652620c803">00096</a> <span class="keyword">static</span> <a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a> <a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#c25d5d5252d6d6a0edcc6d652620c803" title="Atomically decrement value pointed to by target.">Decrement</a> (<a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a>* target)
<a name="l00097"></a>00097 {
<a name="l00098"></a>00098 <span class="keywordflow">return</span> Impl::Decrement (target);
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100
<a name="l00104"></a>00104 <a class="code" href="cssysdef_8h.html#28e20ab0f0f6398b95a4c0674b65751e">CS_FORCEINLINE_TEMPLATEMETHOD</a>
<a name="l00105"></a><a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#b9772579b40cbf25124a51a7601dfd67">00105</a> <span class="keyword">static</span> <a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a> <a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#b9772579b40cbf25124a51a7601dfd67" title="Atomically read value pointed to by target.">Read</a> (<a class="code" href="group__util.html#g56f1a81c92849566ae864511088eb7e8" title="signed 32-bit integer (-2 147 483 648..2 147 483 647)">int32</a>* target)
<a name="l00106"></a>00106 {
<a name="l00107"></a>00107 <span class="keywordflow">return</span> Impl::CompareAndSet (target, 0, 0);
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109
<a name="l00113"></a>00113 <a class="code" href="cssysdef_8h.html#28e20ab0f0f6398b95a4c0674b65751e">CS_FORCEINLINE_TEMPLATEMETHOD</a>
<a name="l00114"></a><a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#b1d28f7c187d680f5ec041f421bb99c8">00114</a> <span class="keyword">static</span> <span class="keywordtype">void</span>* <a class="code" href="classCS_1_1Threading_1_1AtomicOperationsBase.html#b9772579b40cbf25124a51a7601dfd67" title="Atomically read value pointed to by target.">Read</a> (<span class="keywordtype">void</span>** target)
<a name="l00115"></a>00115 {
<a name="l00116"></a>00116 <span class="keywordflow">return</span> Impl::CompareAndSet (target, (<span class="keywordtype">void</span>*)0, (<span class="keywordtype">void</span>*)0);
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118 };
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="preprocessor">#if defined (CS_PLATFORM_WIN32) && \</span>
<a name="l00123"></a>00123 <span class="preprocessor"> defined (CS_COMPILER_MSVC)</span>
<a name="l00124"></a>00124 <span class="preprocessor"></span>
<a name="l00125"></a>00125 <span class="preprocessor"> #include "csutil/threading/atomicops_msvc.h"</span>
<a name="l00126"></a>00126
<a name="l00127"></a>00127 <span class="keyword">namespace </span>CS { <span class="keyword">namespace </span>Threading {
<a name="l00128"></a>00128 <span class="keyword">typedef</span> AtomicOperationsBase<AtomicOperationsMSVC> AtomicOperations;
<a name="l00129"></a>00129 } }
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <span class="preprocessor">#elif defined(CS_COMPILER_GCC) && \</span>
<a name="l00132"></a>00132 <span class="preprocessor"> defined(CS_PROCESSOR_X86)</span>
<a name="l00133"></a>00133 <span class="preprocessor"></span>
<a name="l00134"></a>00134 <span class="preprocessor"> #include "csutil/threading/atomicops_gcc_x86.h"</span>
<a name="l00135"></a>00135
<a name="l00136"></a>00136 <span class="keyword">namespace </span>CS { <span class="keyword">namespace </span>Threading {
<a name="l00137"></a>00137 <span class="keyword">typedef</span> AtomicOperationsBase<AtomicOperationsX86GCC> AtomicOperations;
<a name="l00138"></a>00138 } }
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="preprocessor">#elif defined(CS_COMPILER_GCC) && \</span>
<a name="l00141"></a>00141 <span class="preprocessor"> defined(CS_PROCESSOR_POWERPC)</span>
<a name="l00142"></a>00142 <span class="preprocessor"></span>
<a name="l00143"></a>00143 <span class="preprocessor"> #include "csutil/threading/atomicops_gcc_ppc.h"</span>
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="keyword">namespace </span>CS { <span class="keyword">namespace </span>Threading {
<a name="l00146"></a>00146 <span class="keyword">typedef</span> AtomicOperationsBase<AtomicOperationsPPCGCC> AtomicOperations;
<a name="l00147"></a>00147 } }
<a name="l00148"></a>00148
<a name="l00149"></a>00149 <span class="preprocessor">#elif defined(CS_COMPILER_GCC) && \</span>
<a name="l00150"></a>00150 <span class="preprocessor"> defined(CS_PROCESSOR_SPARC)</span>
<a name="l00151"></a>00151 <span class="preprocessor"></span>
<a name="l00152"></a>00152 <span class="preprocessor"> #include "csutil/threading/atomicops_sparc.h"</span>
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="keyword">namespace </span>CS { <span class="keyword">namespace </span>Threading {
<a name="l00155"></a>00155 <span class="keyword">typedef</span> AtomicOperationsBase<AtomicOperationsSparc> AtomicOperations;
<a name="l00156"></a>00156 } }
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="preprocessor">#else</span>
<a name="l00159"></a>00159 <span class="preprocessor"></span><span class="preprocessor">#error "No atomic operations defined for your platform!"</span>
<a name="l00160"></a>00160 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00161"></a>00161 <span class="preprocessor"></span>
<a name="l00162"></a>00162 <span class="preprocessor">#endif</span>
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