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| <h1>atomic.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_atomic_H</span> |
| <a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define __TBB_atomic_H</span> |
| <a name="l00023"></a>00023 <span class="preprocessor"></span> |
| <a name="l00024"></a>00024 <span class="preprocessor">#include <cstddef></span> |
| <a name="l00025"></a>00025 <span class="preprocessor">#include "tbb_stddef.h"</span> |
| <a name="l00026"></a>00026 |
| <a name="l00027"></a>00027 <span class="preprocessor">#if _MSC_VER </span> |
| <a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#define __TBB_LONG_LONG __int64</span> |
| <a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#else</span> |
| <a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#define __TBB_LONG_LONG long long</span> |
| <a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* _MSC_VER */</span> |
| <a name="l00032"></a>00032 |
| <a name="l00033"></a>00033 <span class="preprocessor">#include "tbb_machine.h"</span> |
| <a name="l00034"></a>00034 |
| <a name="l00035"></a>00035 <span class="preprocessor">#if defined(_MSC_VER) && !defined(__INTEL_COMPILER)</span> |
| <a name="l00036"></a>00036 <span class="preprocessor"></span> <span class="comment">// Workaround for overzealous compiler warnings </span> |
| <a name="l00037"></a>00037 <span class="preprocessor"> #pragma warning (push)</span> |
| <a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor"> #pragma warning (disable: 4244 4267)</span> |
| <a name="l00039"></a>00039 <span class="preprocessor"></span><span class="preprocessor">#endif</span> |
| <a name="l00040"></a>00040 <span class="preprocessor"></span> |
| <a name="l00041"></a>00041 <span class="keyword">namespace </span>tbb { |
| <a name="l00042"></a>00042 |
| <a name="l00044"></a><a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fef">00044</a> <span class="keyword">enum</span> <a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fef">memory_semantics</a> { |
| <a name="l00046"></a>00046 <a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fefc6db01678b1749dff7554688d079520c">__TBB_full_fence</a>, |
| <a name="l00048"></a>00048 <a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fef5f1fafe8d229d348ff91d937f64e79c7">acquire</a>, |
| <a name="l00050"></a>00050 <a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fefaa1fa107db0245c41fb109d976ae8d70">release</a> |
| <a name="l00051"></a>00051 }; |
| <a name="l00052"></a>00052 |
| <a name="l00054"></a>00054 <span class="keyword">namespace </span>internal { |
| <a name="l00055"></a>00055 |
| <a name="l00056"></a>00056 <span class="preprocessor">#if __GNUC__ || __SUNPRO_CC</span> |
| <a name="l00057"></a>00057 <span class="preprocessor"></span><span class="preprocessor">#define __TBB_DECL_ATOMIC_FIELD(t,f,a) t f __attribute__ ((aligned(a)));</span> |
| <a name="l00058"></a>00058 <span class="preprocessor"></span><span class="preprocessor">#elif defined(__INTEL_COMPILER)||_MSC_VER >= 1300</span> |
| <a name="l00059"></a>00059 <span class="preprocessor"></span><span class="preprocessor">#define __TBB_DECL_ATOMIC_FIELD(t,f,a) __declspec(align(a)) t f;</span> |
| <a name="l00060"></a>00060 <span class="preprocessor"></span><span class="preprocessor">#else </span> |
| <a name="l00061"></a>00061 <span class="preprocessor"></span><span class="preprocessor">#error Do not know syntax for forcing alignment.</span> |
| <a name="l00062"></a>00062 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* __GNUC__ */</span> |
| <a name="l00063"></a>00063 |
| <a name="l00064"></a>00064 <span class="keyword">template</span><size_t S> |
| <a name="l00065"></a>00065 <span class="keyword">struct </span>atomic_rep; <span class="comment">// Primary template declared, but never defined.</span> |
| <a name="l00066"></a>00066 |
| <a name="l00067"></a>00067 <span class="keyword">template</span><> |
| <a name="l00068"></a>00068 <span class="keyword">struct </span>atomic_rep<1> { <span class="comment">// Specialization</span> |
| <a name="l00069"></a>00069 <span class="keyword">typedef</span> int8_t word; |
| <a name="l00070"></a>00070 int8_t value; |
| <a name="l00071"></a>00071 }; |
| <a name="l00072"></a>00072 <span class="keyword">template</span><> |
| <a name="l00073"></a>00073 <span class="keyword">struct </span>atomic_rep<2> { <span class="comment">// Specialization</span> |
| <a name="l00074"></a>00074 <span class="keyword">typedef</span> int16_t word; |
| <a name="l00075"></a>00075 __TBB_DECL_ATOMIC_FIELD(int16_t,value,2) |
| <a name="l00076"></a>00076 }; |
| <a name="l00077"></a>00077 <span class="keyword">template</span><> |
| <a name="l00078"></a>00078 <span class="keyword">struct </span>atomic_rep<4> { <span class="comment">// Specialization</span> |
| <a name="l00079"></a>00079 <span class="preprocessor">#if _MSC_VER && __TBB_WORDSIZE==4</span> |
| <a name="l00080"></a>00080 <span class="preprocessor"></span> <span class="comment">// Work-around that avoids spurious /Wp64 warnings</span> |
| <a name="l00081"></a>00081 <span class="keyword">typedef</span> intptr_t word; |
| <a name="l00082"></a>00082 <span class="preprocessor">#else</span> |
| <a name="l00083"></a>00083 <span class="preprocessor"></span> <span class="keyword">typedef</span> int32_t word; |
| <a name="l00084"></a>00084 <span class="preprocessor">#endif</span> |
| <a name="l00085"></a>00085 <span class="preprocessor"></span> __TBB_DECL_ATOMIC_FIELD(int32_t,value,4) |
| <a name="l00086"></a>00086 }; |
| <a name="l00087"></a>00087 <span class="keyword">template</span><> |
| <a name="l00088"></a>00088 <span class="keyword">struct </span>atomic_rep<8> { <span class="comment">// Specialization</span> |
| <a name="l00089"></a>00089 <span class="keyword">typedef</span> int64_t word; |
| <a name="l00090"></a>00090 __TBB_DECL_ATOMIC_FIELD(int64_t,value,8) |
| <a name="l00091"></a>00091 }; |
| <a name="l00092"></a>00092 |
| <a name="l00093"></a>00093 <span class="keyword">template</span><size_t Size, memory_semantics M> |
| <a name="l00094"></a>00094 <span class="keyword">struct </span>atomic_traits; <span class="comment">// Primary template declared, but not defined.</span> |
| <a name="l00095"></a>00095 |
| <a name="l00096"></a>00096 <span class="preprocessor">#define __TBB_DECL_FENCED_ATOMIC_PRIMITIVES(S,M) \</span> |
| <a name="l00097"></a>00097 <span class="preprocessor"> template<> struct atomic_traits<S,M> { \</span> |
| <a name="l00098"></a>00098 <span class="preprocessor"> typedef atomic_rep<S>::word word; \</span> |
| <a name="l00099"></a>00099 <span class="preprocessor"> inline static word compare_and_swap( volatile void* location, word new_value, word comparand ) {\</span> |
| <a name="l00100"></a>00100 <span class="preprocessor"> return __TBB_CompareAndSwap##S##M(location,new_value,comparand); \</span> |
| <a name="l00101"></a>00101 <span class="preprocessor"> } \</span> |
| <a name="l00102"></a>00102 <span class="preprocessor"> inline static word fetch_and_add( volatile void* location, word addend ) { \</span> |
| <a name="l00103"></a>00103 <span class="preprocessor"> return __TBB_FetchAndAdd##S##M(location,addend); \</span> |
| <a name="l00104"></a>00104 <span class="preprocessor"> } \</span> |
| <a name="l00105"></a>00105 <span class="preprocessor"> inline static word fetch_and_store( volatile void* location, word value ) {\</span> |
| <a name="l00106"></a>00106 <span class="preprocessor"> return __TBB_FetchAndStore##S##M(location,value); \</span> |
| <a name="l00107"></a>00107 <span class="preprocessor"> } \</span> |
| <a name="l00108"></a>00108 <span class="preprocessor"> };</span> |
| <a name="l00109"></a>00109 <span class="preprocessor"></span> |
| <a name="l00110"></a>00110 <span class="preprocessor">#define __TBB_DECL_ATOMIC_PRIMITIVES(S) \</span> |
| <a name="l00111"></a>00111 <span class="preprocessor"> template<memory_semantics M> \</span> |
| <a name="l00112"></a>00112 <span class="preprocessor"> struct atomic_traits<S,M> { \</span> |
| <a name="l00113"></a>00113 <span class="preprocessor"> typedef atomic_rep<S>::word word; \</span> |
| <a name="l00114"></a>00114 <span class="preprocessor"> inline static word compare_and_swap( volatile void* location, word new_value, word comparand ) {\</span> |
| <a name="l00115"></a>00115 <span class="preprocessor"> return __TBB_CompareAndSwap##S(location,new_value,comparand); \</span> |
| <a name="l00116"></a>00116 <span class="preprocessor"> } \</span> |
| <a name="l00117"></a>00117 <span class="preprocessor"> inline static word fetch_and_add( volatile void* location, word addend ) { \</span> |
| <a name="l00118"></a>00118 <span class="preprocessor"> return __TBB_FetchAndAdd##S(location,addend); \</span> |
| <a name="l00119"></a>00119 <span class="preprocessor"> } \</span> |
| <a name="l00120"></a>00120 <span class="preprocessor"> inline static word fetch_and_store( volatile void* location, word value ) {\</span> |
| <a name="l00121"></a>00121 <span class="preprocessor"> return __TBB_FetchAndStore##S(location,value); \</span> |
| <a name="l00122"></a>00122 <span class="preprocessor"> } \</span> |
| <a name="l00123"></a>00123 <span class="preprocessor"> };</span> |
| <a name="l00124"></a>00124 <span class="preprocessor"></span> |
| <a name="l00125"></a>00125 <span class="preprocessor">#if __TBB_DECL_FENCED_ATOMICS</span> |
| <a name="l00126"></a>00126 <span class="preprocessor"></span>__TBB_DECL_FENCED_ATOMIC_PRIMITIVES(1,<a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fefc6db01678b1749dff7554688d079520c">__TBB_full_fence</a>) |
| <a name="l00127"></a>00127 __TBB_DECL_FENCED_ATOMIC_PRIMITIVES(2,<a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fefc6db01678b1749dff7554688d079520c">__TBB_full_fence</a>) |
| <a name="l00128"></a>00128 __TBB_DECL_FENCED_ATOMIC_PRIMITIVES(4,<a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fefc6db01678b1749dff7554688d079520c">__TBB_full_fence</a>) |
| <a name="l00129"></a>00129 __TBB_DECL_FENCED_ATOMIC_PRIMITIVES(8,<a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fefc6db01678b1749dff7554688d079520c">__TBB_full_fence</a>) |
| <a name="l00130"></a>00130 __TBB_DECL_FENCED_ATOMIC_PRIMITIVES(1,<a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fef5f1fafe8d229d348ff91d937f64e79c7">acquire</a>) |
| <a name="l00131"></a>00131 __TBB_DECL_FENCED_ATOMIC_PRIMITIVES(2,<a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fef5f1fafe8d229d348ff91d937f64e79c7">acquire</a>) |
| <a name="l00132"></a>00132 __TBB_DECL_FENCED_ATOMIC_PRIMITIVES(4,<a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fef5f1fafe8d229d348ff91d937f64e79c7">acquire</a>) |
| <a name="l00133"></a>00133 __TBB_DECL_FENCED_ATOMIC_PRIMITIVES(8,<a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fef5f1fafe8d229d348ff91d937f64e79c7">acquire</a>) |
| <a name="l00134"></a>00134 __TBB_DECL_FENCED_ATOMIC_PRIMITIVES(1,<a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fefaa1fa107db0245c41fb109d976ae8d70">release</a>) |
| <a name="l00135"></a>00135 __TBB_DECL_FENCED_ATOMIC_PRIMITIVES(2,<a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fefaa1fa107db0245c41fb109d976ae8d70">release</a>) |
| <a name="l00136"></a>00136 __TBB_DECL_FENCED_ATOMIC_PRIMITIVES(4,<a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fefaa1fa107db0245c41fb109d976ae8d70">release</a>) |
| <a name="l00137"></a>00137 __TBB_DECL_FENCED_ATOMIC_PRIMITIVES(8,<a class="code" href="a00267.html#a8686246bb5d3664bd07563749970fefaa1fa107db0245c41fb109d976ae8d70">release</a>) |
| <a name="l00138"></a>00138 <span class="preprocessor">#else</span> |
| <a name="l00139"></a>00139 <span class="preprocessor"></span>__TBB_DECL_ATOMIC_PRIMITIVES(1) |
| <a name="l00140"></a>00140 __TBB_DECL_ATOMIC_PRIMITIVES(2) |
| <a name="l00141"></a>00141 __TBB_DECL_ATOMIC_PRIMITIVES(4) |
| <a name="l00142"></a>00142 __TBB_DECL_ATOMIC_PRIMITIVES(8) |
| <a name="l00143"></a>00143 <span class="preprocessor">#endif</span> |
| <a name="l00144"></a>00144 <span class="preprocessor"></span> |
| <a name="l00146"></a>00146 |
| <a name="l00148"></a>00148 <span class="preprocessor">#define __TBB_MINUS_ONE(T) (T(T(0)-T(1)))</span> |
| <a name="l00149"></a>00149 <span class="preprocessor"></span> |
| <a name="l00151"></a>00151 |
| <a name="l00153"></a>00153 <span class="keyword">template</span><<span class="keyword">typename</span> T> |
| <a name="l00154"></a>00154 <span class="keyword">struct </span>atomic_impl { |
| <a name="l00155"></a>00155 <span class="keyword">protected</span>: |
| <a name="l00156"></a>00156 atomic_rep<sizeof(T)> rep; |
| <a name="l00157"></a>00157 <span class="keyword">private</span>: |
| <a name="l00159"></a>00159 <span class="keyword">union </span>converter { |
| <a name="l00160"></a>00160 T value; |
| <a name="l00161"></a>00161 <span class="keyword">typename</span> atomic_rep<sizeof(T)>::word bits; |
| <a name="l00162"></a>00162 }; |
| <a name="l00163"></a>00163 <span class="keyword">public</span>: |
| <a name="l00164"></a>00164 <span class="keyword">typedef</span> T value_type; |
| <a name="l00165"></a>00165 |
| <a name="l00166"></a>00166 <span class="keyword">template</span><memory_semantics M> |
| <a name="l00167"></a>00167 value_type fetch_and_store( value_type value ) { |
| <a name="l00168"></a>00168 converter u, w; |
| <a name="l00169"></a>00169 u.value = value; |
| <a name="l00170"></a>00170 w.bits = internal::atomic_traits<sizeof(value_type),M>::fetch_and_store(&rep.value,u.bits); |
| <a name="l00171"></a>00171 <span class="keywordflow">return</span> w.value; |
| <a name="l00172"></a>00172 } |
| <a name="l00173"></a>00173 |
| <a name="l00174"></a>00174 value_type fetch_and_store( value_type value ) { |
| <a name="l00175"></a>00175 <span class="keywordflow">return</span> fetch_and_store<__TBB_full_fence>(value); |
| <a name="l00176"></a>00176 } |
| <a name="l00177"></a>00177 |
| <a name="l00178"></a>00178 <span class="keyword">template</span><memory_semantics M> |
| <a name="l00179"></a>00179 value_type compare_and_swap( value_type value, value_type comparand ) { |
| <a name="l00180"></a>00180 converter u, v, w; |
| <a name="l00181"></a>00181 u.value = value; |
| <a name="l00182"></a>00182 v.value = comparand; |
| <a name="l00183"></a>00183 w.bits = internal::atomic_traits<sizeof(value_type),M>::compare_and_swap(&rep.value,u.bits,v.bits); |
| <a name="l00184"></a>00184 <span class="keywordflow">return</span> w.value; |
| <a name="l00185"></a>00185 } |
| <a name="l00186"></a>00186 |
| <a name="l00187"></a>00187 value_type compare_and_swap( value_type value, value_type comparand ) { |
| <a name="l00188"></a>00188 <span class="keywordflow">return</span> compare_and_swap<__TBB_full_fence>(value,comparand); |
| <a name="l00189"></a>00189 } |
| <a name="l00190"></a>00190 |
| <a name="l00191"></a>00191 operator value_type()<span class="keyword"> const volatile </span>{ <span class="comment">// volatile qualifier here for backwards compatibility </span> |
| <a name="l00192"></a>00192 converter w; |
| <a name="l00193"></a>00193 w.bits = __TBB_load_with_acquire( rep.value ); |
| <a name="l00194"></a>00194 <span class="keywordflow">return</span> w.value; |
| <a name="l00195"></a>00195 } |
| <a name="l00196"></a>00196 |
| <a name="l00197"></a>00197 <span class="keyword">protected</span>: |
| <a name="l00198"></a>00198 value_type store_with_release( value_type rhs ) { |
| <a name="l00199"></a>00199 converter u; |
| <a name="l00200"></a>00200 u.value = rhs; |
| <a name="l00201"></a>00201 __TBB_store_with_release(rep.value,u.bits); |
| <a name="l00202"></a>00202 <span class="keywordflow">return</span> rhs; |
| <a name="l00203"></a>00203 } |
| <a name="l00204"></a>00204 }; |
| <a name="l00205"></a>00205 |
| <a name="l00207"></a>00207 |
| <a name="l00210"></a>00210 <span class="keyword">template</span><<span class="keyword">typename</span> I, <span class="keyword">typename</span> D, <span class="keyword">typename</span> StepType> |
| <a name="l00211"></a>00211 <span class="keyword">struct </span>atomic_impl_with_arithmetic: atomic_impl<I> { |
| <a name="l00212"></a>00212 <span class="keyword">public</span>: |
| <a name="l00213"></a>00213 <span class="keyword">typedef</span> I value_type; |
| <a name="l00214"></a>00214 |
| <a name="l00215"></a>00215 <span class="keyword">template</span><memory_semantics M> |
| <a name="l00216"></a>00216 value_type fetch_and_add( D addend ) { |
| <a name="l00217"></a>00217 <span class="keywordflow">return</span> value_type(internal::atomic_traits<<span class="keyword">sizeof</span>(value_type),M>::fetch_and_add( &this->rep.value, addend*<span class="keyword">sizeof</span>(StepType) )); |
| <a name="l00218"></a>00218 } |
| <a name="l00219"></a>00219 |
| <a name="l00220"></a>00220 value_type fetch_and_add( D addend ) { |
| <a name="l00221"></a>00221 <span class="keywordflow">return</span> fetch_and_add<__TBB_full_fence>(addend); |
| <a name="l00222"></a>00222 } |
| <a name="l00223"></a>00223 |
| <a name="l00224"></a>00224 <span class="keyword">template</span><memory_semantics M> |
| <a name="l00225"></a>00225 value_type fetch_and_increment() { |
| <a name="l00226"></a>00226 <span class="keywordflow">return</span> fetch_and_add<M>(1); |
| <a name="l00227"></a>00227 } |
| <a name="l00228"></a>00228 |
| <a name="l00229"></a>00229 value_type fetch_and_increment() { |
| <a name="l00230"></a>00230 <span class="keywordflow">return</span> fetch_and_add(1); |
| <a name="l00231"></a>00231 } |
| <a name="l00232"></a>00232 |
| <a name="l00233"></a>00233 <span class="keyword">template</span><memory_semantics M> |
| <a name="l00234"></a>00234 value_type fetch_and_decrement() { |
| <a name="l00235"></a>00235 <span class="keywordflow">return</span> fetch_and_add<M>(__TBB_MINUS_ONE(D)); |
| <a name="l00236"></a>00236 } |
| <a name="l00237"></a>00237 |
| <a name="l00238"></a>00238 value_type fetch_and_decrement() { |
| <a name="l00239"></a>00239 <span class="keywordflow">return</span> fetch_and_add(__TBB_MINUS_ONE(D)); |
| <a name="l00240"></a>00240 } |
| <a name="l00241"></a>00241 |
| <a name="l00242"></a>00242 <span class="keyword">public</span>: |
| <a name="l00243"></a>00243 value_type operator+=( D addend ) { |
| <a name="l00244"></a>00244 <span class="keywordflow">return</span> fetch_and_add(addend)+addend; |
| <a name="l00245"></a>00245 } |
| <a name="l00246"></a>00246 |
| <a name="l00247"></a>00247 value_type operator-=( D addend ) { |
| <a name="l00248"></a>00248 <span class="comment">// Additive inverse of addend computed using binary minus,</span> |
| <a name="l00249"></a>00249 <span class="comment">// instead of unary minus, for sake of avoiding compiler warnings.</span> |
| <a name="l00250"></a>00250 <span class="keywordflow">return</span> operator+=(D(0)-addend); |
| <a name="l00251"></a>00251 } |
| <a name="l00252"></a>00252 |
| <a name="l00253"></a>00253 value_type operator++() { |
| <a name="l00254"></a>00254 <span class="keywordflow">return</span> fetch_and_add(1)+1; |
| <a name="l00255"></a>00255 } |
| <a name="l00256"></a>00256 |
| <a name="l00257"></a>00257 value_type operator--() { |
| <a name="l00258"></a>00258 <span class="keywordflow">return</span> fetch_and_add(__TBB_MINUS_ONE(D))-1; |
| <a name="l00259"></a>00259 } |
| <a name="l00260"></a>00260 |
| <a name="l00261"></a>00261 value_type operator++(<span class="keywordtype">int</span>) { |
| <a name="l00262"></a>00262 <span class="keywordflow">return</span> fetch_and_add(1); |
| <a name="l00263"></a>00263 } |
| <a name="l00264"></a>00264 |
| <a name="l00265"></a>00265 value_type operator--(<span class="keywordtype">int</span>) { |
| <a name="l00266"></a>00266 <span class="keywordflow">return</span> fetch_and_add(__TBB_MINUS_ONE(D)); |
| <a name="l00267"></a>00267 } |
| <a name="l00268"></a>00268 }; |
| <a name="l00269"></a>00269 |
| <a name="l00270"></a>00270 <span class="preprocessor">#if __TBB_WORDSIZE == 4</span> |
| <a name="l00271"></a>00271 <span class="preprocessor"></span><span class="comment">// Plaforms with 32-bit hardware require special effort for 64-bit loads and stores.</span> |
| <a name="l00272"></a>00272 <span class="preprocessor">#if defined(__INTEL_COMPILER)||!defined(_MSC_VER)||_MSC_VER>=1400</span> |
| <a name="l00273"></a>00273 <span class="preprocessor"></span> |
| <a name="l00274"></a>00274 <span class="keyword">template</span><> |
| <a name="l00275"></a>00275 <span class="keyword">inline</span> atomic_impl<__TBB_LONG_LONG>::operator atomic_impl<__TBB_LONG_LONG>::value_type()<span class="keyword"> const volatile </span>{ |
| <a name="l00276"></a>00276 <span class="keywordflow">return</span> __TBB_Load8(&rep.value); |
| <a name="l00277"></a>00277 } |
| <a name="l00278"></a>00278 |
| <a name="l00279"></a>00279 <span class="keyword">template</span><> |
| <a name="l00280"></a>00280 <span class="keyword">inline</span> atomic_impl<unsigned __TBB_LONG_LONG>::operator atomic_impl<unsigned __TBB_LONG_LONG>::value_type()<span class="keyword"> const volatile </span>{ |
| <a name="l00281"></a>00281 <span class="keywordflow">return</span> __TBB_Load8(&rep.value); |
| <a name="l00282"></a>00282 } |
| <a name="l00283"></a>00283 |
| <a name="l00284"></a>00284 <span class="keyword">template</span><> |
| <a name="l00285"></a>00285 <span class="keyword">inline</span> atomic_impl<__TBB_LONG_LONG>::value_type atomic_impl<__TBB_LONG_LONG>::store_with_release( value_type rhs ) { |
| <a name="l00286"></a>00286 __TBB_Store8(&rep.value,rhs); |
| <a name="l00287"></a>00287 <span class="keywordflow">return</span> rhs; |
| <a name="l00288"></a>00288 } |
| <a name="l00289"></a>00289 |
| <a name="l00290"></a>00290 <span class="keyword">template</span><> |
| <a name="l00291"></a>00291 <span class="keyword">inline</span> atomic_impl<unsigned __TBB_LONG_LONG>::value_type atomic_impl<unsigned __TBB_LONG_LONG>::store_with_release( value_type rhs ) { |
| <a name="l00292"></a>00292 __TBB_Store8(&rep.value,rhs); |
| <a name="l00293"></a>00293 <span class="keywordflow">return</span> rhs; |
| <a name="l00294"></a>00294 } |
| <a name="l00295"></a>00295 |
| <a name="l00296"></a>00296 <span class="preprocessor">#endif </span><span class="comment">/* defined(__INTEL_COMPILER)||!defined(_MSC_VER)||_MSC_VER>=1400 */</span> |
| <a name="l00297"></a>00297 <span class="preprocessor">#endif </span><span class="comment">/* __TBB_WORDSIZE==4 */</span> |
| <a name="l00298"></a>00298 |
| <a name="l00299"></a>00299 } <span class="comment">/* Internal */</span> |
| <a name="l00301"></a>00301 |
| <a name="l00303"></a>00303 |
| <a name="l00305"></a>00305 <span class="keyword">template</span><<span class="keyword">typename</span> T> |
| <a name="l00306"></a><a class="code" href="a00143.html">00306</a> <span class="keyword">struct </span><a class="code" href="a00143.html">atomic</a>: internal::atomic_impl<T> { |
| <a name="l00307"></a>00307 T operator=( T rhs ) { |
| <a name="l00308"></a>00308 <span class="comment">// "this" required here in strict ISO C++ because store_with_release is a dependent name</span> |
| <a name="l00309"></a>00309 <span class="keywordflow">return</span> this->store_with_release(rhs); |
| <a name="l00310"></a>00310 } |
| <a name="l00311"></a>00311 <a class="code" href="a00143.html">atomic<T></a>& operator=( <span class="keyword">const</span> <a class="code" href="a00143.html">atomic<T></a>& rhs ) {this->store_with_release(rhs); <span class="keywordflow">return</span> *<span class="keyword">this</span>;} |
| <a name="l00312"></a>00312 }; |
| <a name="l00313"></a>00313 |
| <a name="l00314"></a>00314 <span class="preprocessor">#define __TBB_DECL_ATOMIC(T) \</span> |
| <a name="l00315"></a>00315 <span class="preprocessor"> template<> struct atomic<T>: internal::atomic_impl_with_arithmetic<T,T,char> { \</span> |
| <a name="l00316"></a>00316 <span class="preprocessor"> T operator=( T rhs ) {return store_with_release(rhs);} \</span> |
| <a name="l00317"></a>00317 <span class="preprocessor"> atomic<T>& operator=( const atomic<T>& rhs ) {store_with_release(rhs); return *this;} \</span> |
| <a name="l00318"></a>00318 <span class="preprocessor"> };</span> |
| <a name="l00319"></a>00319 <span class="preprocessor"></span> |
| <a name="l00320"></a>00320 <span class="preprocessor">#if defined(__INTEL_COMPILER)||!defined(_MSC_VER)||_MSC_VER>=1400</span> |
| <a name="l00321"></a>00321 <span class="preprocessor"></span>__TBB_DECL_ATOMIC(__TBB_LONG_LONG) |
| <a name="l00322"></a>00322 __TBB_DECL_ATOMIC(<span class="keywordtype">unsigned</span> __TBB_LONG_LONG) |
| <a name="l00323"></a>00323 <span class="preprocessor">#else</span> |
| <a name="l00324"></a>00324 <span class="preprocessor"></span><span class="comment">// Some old versions of MVSC cannot correctly compile templates with "long long".</span> |
| <a name="l00325"></a>00325 <span class="preprocessor">#endif </span><span class="comment">/* defined(__INTEL_COMPILER)||!defined(_MSC_VER)||_MSC_VER>=1400 */</span> |
| <a name="l00326"></a>00326 |
| <a name="l00327"></a>00327 __TBB_DECL_ATOMIC(<span class="keywordtype">long</span>) |
| <a name="l00328"></a>00328 __TBB_DECL_ATOMIC(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>) |
| <a name="l00329"></a>00329 |
| <a name="l00330"></a>00330 <span class="preprocessor">#if defined(_MSC_VER) && __TBB_WORDSIZE==4</span> |
| <a name="l00331"></a>00331 <span class="preprocessor"></span><span class="comment">/* Special version of __TBB_DECL_ATOMIC that avoids gratuitous warnings from cl /Wp64 option. </span> |
| <a name="l00332"></a>00332 <span class="comment"> It is identical to __TBB_DECL_ATOMIC(unsigned) except that it replaces operator=(T) </span> |
| <a name="l00333"></a>00333 <span class="comment"> with an operator=(U) that explicitly converts the U to a T. Types T and U should be</span> |
| <a name="l00334"></a>00334 <span class="comment"> type synonyms on the platform. Type U should be the wider variant of T from the</span> |
| <a name="l00335"></a>00335 <span class="comment"> perspective of /Wp64. */</span> |
| <a name="l00336"></a>00336 <span class="preprocessor">#define __TBB_DECL_ATOMIC_ALT(T,U) \</span> |
| <a name="l00337"></a>00337 <span class="preprocessor"> template<> struct atomic<T>: internal::atomic_impl_with_arithmetic<T,T,char> { \</span> |
| <a name="l00338"></a>00338 <span class="preprocessor"> T operator=( U rhs ) {return store_with_release(T(rhs));} \</span> |
| <a name="l00339"></a>00339 <span class="preprocessor"> atomic<T>& operator=( const atomic<T>& rhs ) {store_with_release(rhs); return *this;} \</span> |
| <a name="l00340"></a>00340 <span class="preprocessor"> };</span> |
| <a name="l00341"></a>00341 <span class="preprocessor"></span><a class="code" href="a00267.html#ad165cf61abbe349d413df2589679add">__TBB_DECL_ATOMIC_ALT</a>(<span class="keywordtype">unsigned</span>,size_t) |
| <a name="l00342"></a><a class="code" href="a00267.html#ad165cf61abbe349d413df2589679add">00342</a> __TBB_DECL_ATOMIC_ALT(<span class="keywordtype">int</span>,ptrdiff_t) |
| <a name="l00343"></a>00343 <span class="preprocessor">#else</span> |
| <a name="l00344"></a>00344 <span class="preprocessor"></span>__TBB_DECL_ATOMIC(<span class="keywordtype">unsigned</span>) |
| <a name="l00345"></a>00345 __TBB_DECL_ATOMIC(<span class="keywordtype">int</span>) |
| <a name="l00346"></a>00346 <span class="preprocessor">#endif </span><span class="comment">/* defined(_MSC_VER) && __TBB_WORDSIZE==4 */</span> |
| <a name="l00347"></a>00347 |
| <a name="l00348"></a>00348 __TBB_DECL_ATOMIC(<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>) |
| <a name="l00349"></a>00349 __TBB_DECL_ATOMIC(<span class="keywordtype">short</span>) |
| <a name="l00350"></a>00350 __TBB_DECL_ATOMIC(<span class="keywordtype">char</span>) |
| <a name="l00351"></a>00351 __TBB_DECL_ATOMIC(<span class="keywordtype">signed</span> <span class="keywordtype">char</span>) |
| <a name="l00352"></a>00352 __TBB_DECL_ATOMIC(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>) |
| <a name="l00353"></a>00353 |
| <a name="l00354"></a>00354 <span class="preprocessor">#if !defined(_MSC_VER)||defined(_NATIVE_WCHAR_T_DEFINED) </span> |
| <a name="l00355"></a>00355 <span class="preprocessor"></span>__TBB_DECL_ATOMIC(<span class="keywordtype">wchar_t</span>) |
| <a name="l00356"></a>00356 <span class="preprocessor">#endif </span><span class="comment">/* _MSC_VER||!defined(_NATIVE_WCHAR_T_DEFINED) */</span> |
| <a name="l00357"></a>00357 |
| <a name="l00359"></a>00359 <span class="keyword">template</span><<span class="keyword">typename</span> T> <span class="keyword">struct </span><a class="code" href="a00143.html">atomic</a><T*>: internal::atomic_impl_with_arithmetic<T*,ptrdiff_t,T> { |
| <a name="l00360"></a>00360 T* operator=( T* rhs ) { |
| <a name="l00361"></a>00361 <span class="comment">// "this" required here in strict ISO C++ because store_with_release is a dependent name</span> |
| <a name="l00362"></a>00362 <span class="keywordflow">return</span> this->store_with_release(rhs); |
| <a name="l00363"></a>00363 } |
| <a name="l00364"></a>00364 <a class="code" href="a00143.html">atomic<T*></a>& operator=( <span class="keyword">const</span> <a class="code" href="a00143.html">atomic<T*></a>& rhs ) { |
| <a name="l00365"></a>00365 this->store_with_release(rhs); <span class="keywordflow">return</span> *<span class="keyword">this</span>; |
| <a name="l00366"></a>00366 } |
| <a name="l00367"></a>00367 T* operator->()<span class="keyword"> const </span>{ |
| <a name="l00368"></a>00368 <span class="keywordflow">return</span> (*<span class="keyword">this</span>); |
| <a name="l00369"></a>00369 } |
| <a name="l00370"></a>00370 }; |
| <a name="l00371"></a>00371 |
| <a name="l00373"></a><a class="code" href="a00144.html">00373</a> <span class="keyword">template</span><> <span class="keyword">struct </span><a class="code" href="a00143.html">atomic</a><void*>: internal::atomic_impl<void*> { |
| <a name="l00374"></a>00374 <span class="keywordtype">void</span>* operator=( <span class="keywordtype">void</span>* rhs ) { |
| <a name="l00375"></a>00375 <span class="comment">// "this" required here in strict ISO C++ because store_with_release is a dependent name</span> |
| <a name="l00376"></a>00376 <span class="keywordflow">return</span> this->store_with_release(rhs); |
| <a name="l00377"></a>00377 } |
| <a name="l00378"></a>00378 <a class="code" href="a00143.html">atomic<void*></a>& operator=( <span class="keyword">const</span> <a class="code" href="a00143.html">atomic<void*></a>& rhs ) { |
| <a name="l00379"></a>00379 this->store_with_release(rhs); <span class="keywordflow">return</span> *<span class="keyword">this</span>; |
| <a name="l00380"></a>00380 } |
| <a name="l00381"></a>00381 }; |
| <a name="l00382"></a>00382 |
| <a name="l00383"></a>00383 } <span class="comment">// namespace tbb</span> |
| <a name="l00384"></a>00384 |
| <a name="l00385"></a>00385 <span class="preprocessor">#if defined(_MSC_VER) && !defined(__INTEL_COMPILER)</span> |
| <a name="l00386"></a>00386 <span class="preprocessor"></span><span class="preprocessor"> #pragma warning (pop)</span> |
| <a name="l00387"></a>00387 <span class="preprocessor"></span><span class="preprocessor">#endif // warnings 4244, 4267 are back</span> |
| <a name="l00388"></a>00388 <span class="preprocessor"></span> |
| <a name="l00389"></a>00389 <span class="preprocessor">#endif </span><span class="comment">/* __TBB_atomic_H */</span> |
| </pre></div><hr> |
| <p></p> |
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| <p></p> |
| Intel, Pentium, Intel Xeon, Itanium, Intel XScale and VTune are |
| registered trademarks or trademarks of Intel Corporation or its |
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| <p></p> |
| * Other names and brands may be claimed as the property of others. |
