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| <h1>parallel_do.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_parallel_do_H</span> |
| <a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define __TBB_parallel_do_H</span> |
| <a name="l00023"></a>00023 <span class="preprocessor"></span> |
| <a name="l00024"></a>00024 <span class="preprocessor">#include "task.h"</span> |
| <a name="l00025"></a>00025 <span class="preprocessor">#include "aligned_space.h"</span> |
| <a name="l00026"></a>00026 <span class="preprocessor">#include <iterator></span> |
| <a name="l00027"></a>00027 |
| <a name="l00028"></a>00028 <span class="keyword">namespace </span>tbb { |
| <a name="l00029"></a>00029 |
| <a name="l00031"></a>00031 <span class="keyword">namespace </span>internal { |
| <a name="l00032"></a>00032 <span class="keyword">template</span><<span class="keyword">typename</span> Body, <span class="keyword">typename</span> Item> <span class="keyword">class </span>parallel_do_feeder_impl; |
| <a name="l00033"></a>00033 <span class="keyword">template</span><<span class="keyword">typename</span> Body> <span class="keyword">class </span>do_group_task; |
| <a name="l00034"></a>00034 |
| <a name="l00036"></a>00036 <span class="keyword">template</span><<span class="keyword">typename</span> T> |
| <a name="l00037"></a>00037 <span class="keyword">struct </span>strip { <span class="keyword">typedef</span> T type; }; |
| <a name="l00038"></a>00038 <span class="keyword">template</span><<span class="keyword">typename</span> T> |
| <a name="l00039"></a>00039 <span class="keyword">struct </span>strip<T&> { <span class="keyword">typedef</span> T type; }; |
| <a name="l00040"></a>00040 <span class="keyword">template</span><<span class="keyword">typename</span> T> |
| <a name="l00041"></a>00041 <span class="keyword">struct </span>strip<const T&> { <span class="keyword">typedef</span> T type; }; |
| <a name="l00042"></a>00042 <span class="keyword">template</span><<span class="keyword">typename</span> T> |
| <a name="l00043"></a>00043 <span class="keyword">struct </span>strip<volatile T&> { <span class="keyword">typedef</span> T type; }; |
| <a name="l00044"></a>00044 <span class="keyword">template</span><<span class="keyword">typename</span> T> |
| <a name="l00045"></a>00045 <span class="keyword">struct </span>strip<const volatile T&> { <span class="keyword">typedef</span> T type; }; |
| <a name="l00046"></a>00046 <span class="comment">// Most of the compilers remove cv-qualifiers from non-reference function argument types. </span> |
| <a name="l00047"></a>00047 <span class="comment">// But unfortunately there are those that don't.</span> |
| <a name="l00048"></a>00048 <span class="keyword">template</span><<span class="keyword">typename</span> T> |
| <a name="l00049"></a>00049 <span class="keyword">struct </span>strip<const T> { <span class="keyword">typedef</span> T type; }; |
| <a name="l00050"></a>00050 <span class="keyword">template</span><<span class="keyword">typename</span> T> |
| <a name="l00051"></a>00051 <span class="keyword">struct </span>strip<volatile T> { <span class="keyword">typedef</span> T type; }; |
| <a name="l00052"></a>00052 <span class="keyword">template</span><<span class="keyword">typename</span> T> |
| <a name="l00053"></a>00053 <span class="keyword">struct </span>strip<const volatile T> { <span class="keyword">typedef</span> T type; }; |
| <a name="l00054"></a>00054 } <span class="comment">// namespace internal</span> |
| <a name="l00056"></a>00056 <span class="comment"></span> |
| <a name="l00058"></a>00058 |
| <a name="l00059"></a>00059 <span class="keyword">template</span><<span class="keyword">typename</span> Item> |
| <a name="l00060"></a><a class="code" href="a00178.html">00060</a> <span class="keyword">class </span><a class="code" href="a00178.html">parallel_do_feeder</a>: internal::no_copy |
| <a name="l00061"></a>00061 { |
| <a name="l00062"></a>00062 <a class="code" href="a00178.html">parallel_do_feeder</a>() {} |
| <a name="l00063"></a>00063 <span class="keyword">virtual</span> ~<a class="code" href="a00178.html">parallel_do_feeder</a> () {} |
| <a name="l00064"></a>00064 <span class="keyword">virtual</span> <span class="keywordtype">void</span> internal_add( <span class="keyword">const</span> Item& item ) = 0; |
| <a name="l00065"></a>00065 <span class="keyword">template</span><<span class="keyword">typename</span> Body_, <span class="keyword">typename</span> Item_> <span class="keyword">friend</span> <span class="keyword">class </span>internal::parallel_do_feeder_impl; |
| <a name="l00066"></a>00066 <span class="keyword">public</span>: |
| <a name="l00068"></a><a class="code" href="a00178.html#40baaf0f6856f4491dd0adf896c93516">00068</a> <span class="keywordtype">void</span> <a class="code" href="a00178.html#40baaf0f6856f4491dd0adf896c93516">add</a>( <span class="keyword">const</span> Item& item ) {internal_add(item);} |
| <a name="l00069"></a>00069 }; |
| <a name="l00070"></a>00070 |
| <a name="l00072"></a>00072 <span class="keyword">namespace </span>internal { |
| <a name="l00074"></a>00074 |
| <a name="l00076"></a>00076 <span class="keyword">template</span><<span class="keyword">class</span> Body, <span class="keyword">typename</span> Item> |
| <a name="l00077"></a>00077 <span class="keyword">class </span>parallel_do_operator_selector |
| <a name="l00078"></a>00078 { |
| <a name="l00079"></a>00079 <span class="keyword">typedef</span> parallel_do_feeder<Item> Feeder; |
| <a name="l00080"></a>00080 <span class="keyword">template</span><<span class="keyword">typename</span> A1, <span class="keyword">typename</span> A2, <span class="keyword">typename</span> CvItem > |
| <a name="l00081"></a>00081 <span class="keyword">static</span> <span class="keywordtype">void</span> internal_call( <span class="keyword">const</span> Body& obj, A1& arg1, A2&, <span class="keywordtype">void</span> (Body::*)(CvItem) <span class="keyword">const</span> ) { |
| <a name="l00082"></a>00082 obj(arg1); |
| <a name="l00083"></a>00083 } |
| <a name="l00084"></a>00084 <span class="keyword">template</span><<span class="keyword">typename</span> A1, <span class="keyword">typename</span> A2, <span class="keyword">typename</span> CvItem > |
| <a name="l00085"></a>00085 <span class="keyword">static</span> <span class="keywordtype">void</span> internal_call( <span class="keyword">const</span> Body& obj, A1& arg1, A2& arg2, <span class="keywordtype">void</span> (Body::*)(CvItem, parallel_do_feeder<Item>&) <span class="keyword">const</span> ) { |
| <a name="l00086"></a>00086 obj(arg1, arg2); |
| <a name="l00087"></a>00087 } |
| <a name="l00088"></a>00088 |
| <a name="l00089"></a>00089 <span class="keyword">public</span>: |
| <a name="l00090"></a>00090 <span class="keyword">template</span><<span class="keyword">typename</span> A1, <span class="keyword">typename</span> A2 > |
| <a name="l00091"></a>00091 <span class="keyword">static</span> <span class="keywordtype">void</span> call( <span class="keyword">const</span> Body& obj, A1& arg1, A2& arg2 ) |
| <a name="l00092"></a>00092 { |
| <a name="l00093"></a>00093 internal_call( obj, arg1, arg2, &Body::operator() ); |
| <a name="l00094"></a>00094 } |
| <a name="l00095"></a>00095 }; |
| <a name="l00096"></a>00096 |
| <a name="l00098"></a>00098 |
| <a name="l00100"></a>00100 <span class="keyword">template</span><<span class="keyword">typename</span> Body, <span class="keyword">typename</span> Item> |
| <a name="l00101"></a>00101 <span class="keyword">class </span>do_iteration_task: <span class="keyword">public</span> task |
| <a name="l00102"></a>00102 { |
| <a name="l00103"></a>00103 <span class="keyword">typedef</span> parallel_do_feeder_impl<Body, Item> feeder_type; |
| <a name="l00104"></a>00104 |
| <a name="l00105"></a>00105 Item my_value; |
| <a name="l00106"></a>00106 feeder_type& my_feeder; |
| <a name="l00107"></a>00107 |
| <a name="l00108"></a>00108 do_iteration_task( <span class="keyword">const</span> Item& value, feeder_type& feeder ) : |
| <a name="l00109"></a>00109 my_value(value), my_feeder(feeder) |
| <a name="l00110"></a>00110 {} |
| <a name="l00111"></a>00111 |
| <a name="l00112"></a>00112 <span class="comment">/*override*/</span> |
| <a name="l00113"></a>00113 task* execute() |
| <a name="l00114"></a>00114 { |
| <a name="l00115"></a>00115 parallel_do_operator_selector<Body, Item>::call(*my_feeder.my_body, my_value, my_feeder); |
| <a name="l00116"></a>00116 <span class="keywordflow">return</span> NULL; |
| <a name="l00117"></a>00117 } |
| <a name="l00118"></a>00118 |
| <a name="l00119"></a>00119 <span class="keyword">template</span><<span class="keyword">typename</span> Body_, <span class="keyword">typename</span> Item_> <span class="keyword">friend</span> <span class="keyword">class </span>parallel_do_feeder_impl; |
| <a name="l00120"></a>00120 }; <span class="comment">// class do_iteration_task</span> |
| <a name="l00121"></a>00121 |
| <a name="l00122"></a>00122 <span class="keyword">template</span><<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> Body, <span class="keyword">typename</span> Item> |
| <a name="l00123"></a>00123 <span class="keyword">class </span>do_iteration_task_iter: <span class="keyword">public</span> task |
| <a name="l00124"></a>00124 { |
| <a name="l00125"></a>00125 <span class="keyword">typedef</span> parallel_do_feeder_impl<Body, Item> feeder_type; |
| <a name="l00126"></a>00126 |
| <a name="l00127"></a>00127 Iterator my_iter; |
| <a name="l00128"></a>00128 feeder_type& my_feeder; |
| <a name="l00129"></a>00129 |
| <a name="l00130"></a>00130 do_iteration_task_iter( <span class="keyword">const</span> Iterator& iter, feeder_type& feeder ) : |
| <a name="l00131"></a>00131 my_iter(iter), my_feeder(feeder) |
| <a name="l00132"></a>00132 {} |
| <a name="l00133"></a>00133 |
| <a name="l00134"></a>00134 <span class="comment">/*override*/</span> |
| <a name="l00135"></a>00135 task* execute() |
| <a name="l00136"></a>00136 { |
| <a name="l00137"></a>00137 parallel_do_operator_selector<Body, Item>::call(*my_feeder.my_body, *my_iter, my_feeder); |
| <a name="l00138"></a>00138 <span class="keywordflow">return</span> NULL; |
| <a name="l00139"></a>00139 } |
| <a name="l00140"></a>00140 |
| <a name="l00141"></a>00141 <span class="keyword">template</span><<span class="keyword">typename</span> Iterator_, <span class="keyword">typename</span> Body_, <span class="keyword">typename</span> Item_> <span class="keyword">friend</span> <span class="keyword">class </span>do_group_task_forward; |
| <a name="l00142"></a>00142 <span class="keyword">template</span><<span class="keyword">typename</span> Body_, <span class="keyword">typename</span> Item_> <span class="keyword">friend</span> <span class="keyword">class </span>do_group_task_input; |
| <a name="l00143"></a>00143 <span class="keyword">template</span><<span class="keyword">typename</span> Iterator_, <span class="keyword">typename</span> Body_, <span class="keyword">typename</span> Item_> <span class="keyword">friend</span> <span class="keyword">class </span>do_task_iter; |
| <a name="l00144"></a>00144 }; <span class="comment">// class do_iteration_task_iter</span> |
| <a name="l00145"></a>00145 |
| <a name="l00147"></a>00147 |
| <a name="l00149"></a>00149 <span class="keyword">template</span><<span class="keyword">class</span> Body, <span class="keyword">typename</span> Item> |
| <a name="l00150"></a>00150 <span class="keyword">class </span>parallel_do_feeder_impl : <span class="keyword">public</span> parallel_do_feeder<Item> |
| <a name="l00151"></a>00151 { |
| <a name="l00152"></a>00152 <span class="comment">/*override*/</span> |
| <a name="l00153"></a>00153 <span class="keywordtype">void</span> internal_add( <span class="keyword">const</span> Item& item ) |
| <a name="l00154"></a>00154 { |
| <a name="l00155"></a>00155 <span class="keyword">typedef</span> do_iteration_task<Body, Item> iteration_type; |
| <a name="l00156"></a>00156 |
| <a name="l00157"></a>00157 iteration_type& t = *<span class="keyword">new</span> (task::allocate_additional_child_of(*my_barrier)) iteration_type(item, *<span class="keyword">this</span>); |
| <a name="l00158"></a>00158 |
| <a name="l00159"></a>00159 t.spawn( t ); |
| <a name="l00160"></a>00160 } |
| <a name="l00161"></a>00161 <span class="keyword">public</span>: |
| <a name="l00162"></a>00162 <span class="keyword">const</span> Body* my_body; |
| <a name="l00163"></a>00163 empty_task* my_barrier; |
| <a name="l00164"></a>00164 |
| <a name="l00165"></a>00165 parallel_do_feeder_impl() |
| <a name="l00166"></a>00166 { |
| <a name="l00167"></a>00167 my_barrier = <span class="keyword">new</span>( <a class="code" href="a00199.html#23acb0da0afd690da797f9f882027d34">task::allocate_root</a>() ) empty_task(); |
| <a name="l00168"></a>00168 __TBB_ASSERT(my_barrier, <span class="stringliteral">"root task allocation failed"</span>); |
| <a name="l00169"></a>00169 } |
| <a name="l00170"></a>00170 |
| <a name="l00171"></a>00171 <span class="preprocessor">#if __TBB_TASK_GROUP_CONTEXT</span> |
| <a name="l00172"></a>00172 <span class="preprocessor"></span> parallel_do_feeder_impl(<a class="code" href="a00201.html">tbb::task_group_context</a> &context) |
| <a name="l00173"></a>00173 { |
| <a name="l00174"></a>00174 my_barrier = <span class="keyword">new</span>( <a class="code" href="a00199.html#23acb0da0afd690da797f9f882027d34">task::allocate_root</a>(context) ) empty_task(); |
| <a name="l00175"></a>00175 __TBB_ASSERT(my_barrier, <span class="stringliteral">"root task allocation failed"</span>); |
| <a name="l00176"></a>00176 } |
| <a name="l00177"></a>00177 <span class="preprocessor">#endif</span> |
| <a name="l00178"></a>00178 <span class="preprocessor"></span> |
| <a name="l00179"></a>00179 ~parallel_do_feeder_impl() |
| <a name="l00180"></a>00180 { |
| <a name="l00181"></a>00181 my_barrier->destroy(*my_barrier); |
| <a name="l00182"></a>00182 } |
| <a name="l00183"></a>00183 }; <span class="comment">// class parallel_do_feeder_impl</span> |
| <a name="l00184"></a>00184 |
| <a name="l00185"></a>00185 |
| <a name="l00187"></a>00187 |
| <a name="l00190"></a>00190 <span class="keyword">template</span><<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> Body, <span class="keyword">typename</span> Item> |
| <a name="l00191"></a>00191 <span class="keyword">class </span>do_group_task_forward: <span class="keyword">public</span> task |
| <a name="l00192"></a>00192 { |
| <a name="l00193"></a>00193 <span class="keyword">static</span> <span class="keyword">const</span> size_t max_arg_size = 4; |
| <a name="l00194"></a>00194 |
| <a name="l00195"></a>00195 <span class="keyword">typedef</span> parallel_do_feeder_impl<Body, Item> feeder_type; |
| <a name="l00196"></a>00196 |
| <a name="l00197"></a>00197 feeder_type& my_feeder; |
| <a name="l00198"></a>00198 Iterator my_first; |
| <a name="l00199"></a>00199 size_t my_size; |
| <a name="l00200"></a>00200 |
| <a name="l00201"></a>00201 do_group_task_forward( Iterator first, size_t size, feeder_type& feeder ) |
| <a name="l00202"></a>00202 : my_feeder(feeder), my_first(first), my_size(size) |
| <a name="l00203"></a>00203 {} |
| <a name="l00204"></a>00204 |
| <a name="l00205"></a>00205 <span class="comment">/*override*/</span> task* execute() |
| <a name="l00206"></a>00206 { |
| <a name="l00207"></a>00207 <span class="keyword">typedef</span> do_iteration_task_iter<Iterator, Body, Item> iteration_type; |
| <a name="l00208"></a>00208 __TBB_ASSERT( my_size>0, NULL ); |
| <a name="l00209"></a>00209 task_list list; |
| <a name="l00210"></a>00210 task* t; |
| <a name="l00211"></a>00211 size_t k=0; |
| <a name="l00212"></a>00212 <span class="keywordflow">for</span>(;;) { |
| <a name="l00213"></a>00213 t = <span class="keyword">new</span>( allocate_child() ) iteration_type( my_first, my_feeder ); |
| <a name="l00214"></a>00214 ++my_first; |
| <a name="l00215"></a>00215 <span class="keywordflow">if</span>( ++k==my_size ) <span class="keywordflow">break</span>; |
| <a name="l00216"></a>00216 list.push_back(*t); |
| <a name="l00217"></a>00217 } |
| <a name="l00218"></a>00218 set_ref_count(<span class="keywordtype">int</span>(k+1)); |
| <a name="l00219"></a>00219 spawn(list); |
| <a name="l00220"></a>00220 spawn_and_wait_for_all(*t); |
| <a name="l00221"></a>00221 <span class="keywordflow">return</span> NULL; |
| <a name="l00222"></a>00222 } |
| <a name="l00223"></a>00223 |
| <a name="l00224"></a>00224 <span class="keyword">template</span><<span class="keyword">typename</span> Iterator_, <span class="keyword">typename</span> Body_, <span class="keyword">typename</span> _Item> <span class="keyword">friend</span> <span class="keyword">class </span>do_task_iter; |
| <a name="l00225"></a>00225 }; <span class="comment">// class do_group_task_forward</span> |
| <a name="l00226"></a>00226 |
| <a name="l00227"></a>00227 <span class="keyword">template</span><<span class="keyword">typename</span> Body, <span class="keyword">typename</span> Item> |
| <a name="l00228"></a>00228 <span class="keyword">class </span>do_group_task_input: <span class="keyword">public</span> task |
| <a name="l00229"></a>00229 { |
| <a name="l00230"></a>00230 <span class="keyword">static</span> <span class="keyword">const</span> size_t max_arg_size = 4; |
| <a name="l00231"></a>00231 |
| <a name="l00232"></a>00232 <span class="keyword">typedef</span> parallel_do_feeder_impl<Body, Item> feeder_type; |
| <a name="l00233"></a>00233 |
| <a name="l00234"></a>00234 feeder_type& my_feeder; |
| <a name="l00235"></a>00235 size_t my_size; |
| <a name="l00236"></a>00236 aligned_space<Item, max_arg_size> my_arg; |
| <a name="l00237"></a>00237 |
| <a name="l00238"></a>00238 do_group_task_input( feeder_type& feeder ) |
| <a name="l00239"></a>00239 : my_feeder(feeder), my_size(0) |
| <a name="l00240"></a>00240 {} |
| <a name="l00241"></a>00241 |
| <a name="l00242"></a>00242 <span class="comment">/*override*/</span> task* execute() |
| <a name="l00243"></a>00243 { |
| <a name="l00244"></a>00244 <span class="keyword">typedef</span> do_iteration_task_iter<Item*, Body, Item> iteration_type; |
| <a name="l00245"></a>00245 __TBB_ASSERT( my_size>0, NULL ); |
| <a name="l00246"></a>00246 task_list list; |
| <a name="l00247"></a>00247 task* t; |
| <a name="l00248"></a>00248 size_t k=0; |
| <a name="l00249"></a>00249 <span class="keywordflow">for</span>(;;) { |
| <a name="l00250"></a>00250 t = <span class="keyword">new</span>( allocate_child() ) iteration_type( my_arg.begin() + k, my_feeder ); |
| <a name="l00251"></a>00251 <span class="keywordflow">if</span>( ++k==my_size ) <span class="keywordflow">break</span>; |
| <a name="l00252"></a>00252 list.push_back(*t); |
| <a name="l00253"></a>00253 } |
| <a name="l00254"></a>00254 set_ref_count(<span class="keywordtype">int</span>(k+1)); |
| <a name="l00255"></a>00255 spawn(list); |
| <a name="l00256"></a>00256 spawn_and_wait_for_all(*t); |
| <a name="l00257"></a>00257 <span class="keywordflow">return</span> NULL; |
| <a name="l00258"></a>00258 } |
| <a name="l00259"></a>00259 |
| <a name="l00260"></a>00260 ~do_group_task_input(){ |
| <a name="l00261"></a>00261 <span class="keywordflow">for</span>( size_t k=0; k<my_size; ++k) |
| <a name="l00262"></a>00262 (my_arg.begin() + k)->~Item(); |
| <a name="l00263"></a>00263 } |
| <a name="l00264"></a>00264 |
| <a name="l00265"></a>00265 <span class="keyword">template</span><<span class="keyword">typename</span> Iterator_, <span class="keyword">typename</span> Body_, <span class="keyword">typename</span> Item_> <span class="keyword">friend</span> <span class="keyword">class </span>do_task_iter; |
| <a name="l00266"></a>00266 }; <span class="comment">// class do_group_task_input</span> |
| <a name="l00267"></a>00267 |
| <a name="l00269"></a>00269 |
| <a name="l00271"></a>00271 <span class="keyword">template</span><<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> Body, <span class="keyword">typename</span> Item> |
| <a name="l00272"></a>00272 <span class="keyword">class </span>do_task_iter: <span class="keyword">public</span> task |
| <a name="l00273"></a>00273 { |
| <a name="l00274"></a>00274 <span class="keyword">typedef</span> parallel_do_feeder_impl<Body, Item> feeder_type; |
| <a name="l00275"></a>00275 |
| <a name="l00276"></a>00276 <span class="keyword">public</span>: |
| <a name="l00277"></a>00277 do_task_iter( Iterator first, Iterator last , feeder_type& feeder ) : |
| <a name="l00278"></a>00278 my_first(first), my_last(last), my_feeder(feeder) |
| <a name="l00279"></a>00279 {} |
| <a name="l00280"></a>00280 |
| <a name="l00281"></a>00281 <span class="keyword">private</span>: |
| <a name="l00282"></a>00282 Iterator my_first; |
| <a name="l00283"></a>00283 Iterator my_last; |
| <a name="l00284"></a>00284 feeder_type& my_feeder; |
| <a name="l00285"></a>00285 |
| <a name="l00286"></a>00286 <span class="comment">/* Do not merge run(xxx) and run_xxx() methods. They are separated in order</span> |
| <a name="l00287"></a>00287 <span class="comment"> to make sure that compilers will eliminate unused argument of type xxx</span> |
| <a name="l00288"></a>00288 <span class="comment"> (that is will not put it on stack). The sole purpose of this argument </span> |
| <a name="l00289"></a>00289 <span class="comment"> is overload resolution.</span> |
| <a name="l00290"></a>00290 <span class="comment"> </span> |
| <a name="l00291"></a>00291 <span class="comment"> An alternative could be using template functions, but explicit specialization </span> |
| <a name="l00292"></a>00292 <span class="comment"> of member function templates is not supported for non specialized class </span> |
| <a name="l00293"></a>00293 <span class="comment"> templates. Besides template functions would always fall back to the least </span> |
| <a name="l00294"></a>00294 <span class="comment"> efficient variant (the one for input iterators) in case of iterators having </span> |
| <a name="l00295"></a>00295 <span class="comment"> custom tags derived from basic ones. */</span> |
| <a name="l00296"></a>00296 <span class="comment">/*override*/</span> task* execute() |
| <a name="l00297"></a>00297 { |
| <a name="l00298"></a>00298 <span class="keyword">typedef</span> <span class="keyword">typename</span> std::iterator_traits<Iterator>::iterator_category iterator_tag; |
| <a name="l00299"></a>00299 <span class="keywordflow">return</span> run( (iterator_tag*)NULL ); |
| <a name="l00300"></a>00300 } |
| <a name="l00301"></a>00301 |
| <a name="l00304"></a>00304 <span class="keyword">inline</span> task* run( <span class="keywordtype">void</span>* ) { <span class="keywordflow">return</span> run_for_input_iterator(); } |
| <a name="l00305"></a>00305 |
| <a name="l00306"></a>00306 task* run_for_input_iterator() { |
| <a name="l00307"></a>00307 <span class="keyword">typedef</span> do_group_task_input<Body, Item> block_type; |
| <a name="l00308"></a>00308 |
| <a name="l00309"></a>00309 block_type& t = *<span class="keyword">new</span>( allocate_additional_child_of(*my_feeder.my_barrier) ) block_type(my_feeder); |
| <a name="l00310"></a>00310 size_t k=0; |
| <a name="l00311"></a>00311 <span class="keywordflow">while</span>( !(my_first == my_last) ) { |
| <a name="l00312"></a>00312 <span class="keyword">new</span> (t.my_arg.begin() + k) Item(*my_first); |
| <a name="l00313"></a>00313 ++my_first; |
| <a name="l00314"></a>00314 <span class="keywordflow">if</span>( ++k==block_type::max_arg_size ) { |
| <a name="l00315"></a>00315 <span class="keywordflow">if</span> ( !(my_first == my_last) ) |
| <a name="l00316"></a>00316 recycle_to_reexecute(); |
| <a name="l00317"></a>00317 <span class="keywordflow">break</span>; |
| <a name="l00318"></a>00318 } |
| <a name="l00319"></a>00319 } |
| <a name="l00320"></a>00320 <span class="keywordflow">if</span>( k==0 ) { |
| <a name="l00321"></a>00321 destroy(t); |
| <a name="l00322"></a>00322 <span class="keywordflow">return</span> NULL; |
| <a name="l00323"></a>00323 } <span class="keywordflow">else</span> { |
| <a name="l00324"></a>00324 t.my_size = k; |
| <a name="l00325"></a>00325 <span class="keywordflow">return</span> &t; |
| <a name="l00326"></a>00326 } |
| <a name="l00327"></a>00327 } |
| <a name="l00328"></a>00328 |
| <a name="l00329"></a>00329 <span class="keyword">inline</span> task* run( std::forward_iterator_tag* ) { <span class="keywordflow">return</span> run_for_forward_iterator(); } |
| <a name="l00330"></a>00330 |
| <a name="l00331"></a>00331 task* run_for_forward_iterator() { |
| <a name="l00332"></a>00332 <span class="keyword">typedef</span> do_group_task_forward<Iterator, Body, Item> block_type; |
| <a name="l00333"></a>00333 |
| <a name="l00334"></a>00334 Iterator first = my_first; |
| <a name="l00335"></a>00335 size_t k=0; |
| <a name="l00336"></a>00336 <span class="keywordflow">while</span>( !(my_first==my_last) ) { |
| <a name="l00337"></a>00337 ++my_first; |
| <a name="l00338"></a>00338 <span class="keywordflow">if</span>( ++k==block_type::max_arg_size ) { |
| <a name="l00339"></a>00339 <span class="keywordflow">if</span> ( !(my_first==my_last) ) |
| <a name="l00340"></a>00340 recycle_to_reexecute(); |
| <a name="l00341"></a>00341 <span class="keywordflow">break</span>; |
| <a name="l00342"></a>00342 } |
| <a name="l00343"></a>00343 } |
| <a name="l00344"></a>00344 <span class="keywordflow">return</span> k==0 ? NULL : <span class="keyword">new</span>( allocate_additional_child_of(*my_feeder.my_barrier) ) block_type(first, k, my_feeder); |
| <a name="l00345"></a>00345 } |
| <a name="l00346"></a>00346 |
| <a name="l00347"></a>00347 <span class="keyword">inline</span> task* run( std::random_access_iterator_tag* ) { <span class="keywordflow">return</span> run_for_random_access_iterator(); } |
| <a name="l00348"></a>00348 |
| <a name="l00349"></a>00349 task* run_for_random_access_iterator() { |
| <a name="l00350"></a>00350 <span class="keyword">typedef</span> do_group_task_forward<Iterator, Body, Item> block_type; |
| <a name="l00351"></a>00351 <span class="keyword">typedef</span> do_iteration_task_iter<Iterator, Body, Item> iteration_type; |
| <a name="l00352"></a>00352 |
| <a name="l00353"></a>00353 size_t k = static_cast<size_t>(my_last-my_first); |
| <a name="l00354"></a>00354 <span class="keywordflow">if</span>( k > block_type::max_arg_size ) { |
| <a name="l00355"></a>00355 Iterator middle = my_first + k/2; |
| <a name="l00356"></a>00356 |
| <a name="l00357"></a>00357 empty_task& c = *<span class="keyword">new</span>( allocate_continuation() ) empty_task; |
| <a name="l00358"></a>00358 do_task_iter& b = *<span class="keyword">new</span>( c.allocate_child() ) do_task_iter(middle, my_last, my_feeder); |
| <a name="l00359"></a>00359 recycle_as_child_of(c); |
| <a name="l00360"></a>00360 |
| <a name="l00361"></a>00361 my_last = middle; |
| <a name="l00362"></a>00362 c.set_ref_count(2); |
| <a name="l00363"></a>00363 c.spawn(b); |
| <a name="l00364"></a>00364 <span class="keywordflow">return</span> <span class="keyword">this</span>; |
| <a name="l00365"></a>00365 }<span class="keywordflow">else</span> <span class="keywordflow">if</span>( k != 0 ) { |
| <a name="l00366"></a>00366 task_list list; |
| <a name="l00367"></a>00367 task* t; |
| <a name="l00368"></a>00368 size_t k1=0; |
| <a name="l00369"></a>00369 <span class="keywordflow">for</span>(;;) { |
| <a name="l00370"></a>00370 t = <span class="keyword">new</span>( allocate_child() ) iteration_type(my_first, my_feeder); |
| <a name="l00371"></a>00371 ++my_first; |
| <a name="l00372"></a>00372 <span class="keywordflow">if</span>( ++k1==k ) <span class="keywordflow">break</span>; |
| <a name="l00373"></a>00373 list.push_back(*t); |
| <a name="l00374"></a>00374 } |
| <a name="l00375"></a>00375 set_ref_count(<span class="keywordtype">int</span>(k+1)); |
| <a name="l00376"></a>00376 spawn(list); |
| <a name="l00377"></a>00377 spawn_and_wait_for_all(*t); |
| <a name="l00378"></a>00378 } |
| <a name="l00379"></a>00379 <span class="keywordflow">return</span> NULL; |
| <a name="l00380"></a>00380 } |
| <a name="l00381"></a>00381 }; <span class="comment">// class do_task_iter</span> |
| <a name="l00382"></a>00382 |
| <a name="l00384"></a>00384 |
| <a name="l00386"></a>00386 <span class="keyword">template</span><<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> Body, <span class="keyword">typename</span> Item> |
| <a name="l00387"></a>00387 <span class="keywordtype">void</span> run_parallel_do( Iterator first, Iterator last, <span class="keyword">const</span> Body& body |
| <a name="l00388"></a>00388 #<span class="keywordflow">if</span> __TBB_TASK_GROUP_CONTEXT |
| <a name="l00389"></a>00389 , task_group_context& context |
| <a name="l00390"></a>00390 #endif |
| <a name="l00391"></a>00391 ) |
| <a name="l00392"></a>00392 { |
| <a name="l00393"></a>00393 <span class="keyword">typedef</span> do_task_iter<Iterator, Body, Item> root_iteration_task; |
| <a name="l00394"></a>00394 <span class="preprocessor">#if __TBB_TASK_GROUP_CONTEXT</span> |
| <a name="l00395"></a>00395 <span class="preprocessor"></span> parallel_do_feeder_impl<Body, Item> feeder(context); |
| <a name="l00396"></a>00396 <span class="preprocessor">#else</span> |
| <a name="l00397"></a>00397 <span class="preprocessor"></span> parallel_do_feeder_impl<Body, Item> feeder; |
| <a name="l00398"></a>00398 <span class="preprocessor">#endif</span> |
| <a name="l00399"></a>00399 <span class="preprocessor"></span> feeder.my_body = &body; |
| <a name="l00400"></a>00400 |
| <a name="l00401"></a>00401 root_iteration_task &t = *<span class="keyword">new</span>( feeder.my_barrier->allocate_child() ) root_iteration_task(first, last, feeder); |
| <a name="l00402"></a>00402 |
| <a name="l00403"></a>00403 feeder.my_barrier->set_ref_count(2); |
| <a name="l00404"></a>00404 feeder.my_barrier->spawn_and_wait_for_all(t); |
| <a name="l00405"></a>00405 } |
| <a name="l00406"></a>00406 |
| <a name="l00408"></a>00408 |
| <a name="l00410"></a>00410 <span class="keyword">template</span><<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> Body, <span class="keyword">typename</span> Item> |
| <a name="l00411"></a>00411 <span class="keywordtype">void</span> select_parallel_do( Iterator first, Iterator last, <span class="keyword">const</span> Body& body, <span class="keywordtype">void</span> (Body::*)(Item) <span class="keyword">const</span> |
| <a name="l00412"></a>00412 #<span class="keywordflow">if</span> __TBB_TASK_GROUP_CONTEXT |
| <a name="l00413"></a>00413 , task_group_context& context |
| <a name="l00414"></a>00414 #endif <span class="comment">// __TBB_TASK_GROUP_CONTEXT </span> |
| <a name="l00415"></a>00415 ) |
| <a name="l00416"></a>00416 { |
| <a name="l00417"></a>00417 run_parallel_do<Iterator, Body, typename strip<Item>::type>( first, last, body |
| <a name="l00418"></a>00418 <span class="preprocessor">#if __TBB_TASK_GROUP_CONTEXT</span> |
| <a name="l00419"></a>00419 <span class="preprocessor"></span> , context |
| <a name="l00420"></a>00420 <span class="preprocessor">#endif // __TBB_TASK_GROUP_CONTEXT </span> |
| <a name="l00421"></a>00421 <span class="preprocessor"></span> ); |
| <a name="l00422"></a>00422 } |
| <a name="l00423"></a>00423 |
| <a name="l00425"></a>00425 |
| <a name="l00427"></a>00427 <span class="keyword">template</span><<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> Body, <span class="keyword">typename</span> Item, <span class="keyword">typename</span> _Item> |
| <a name="l00428"></a>00428 <span class="keywordtype">void</span> select_parallel_do( Iterator first, Iterator last, <span class="keyword">const</span> Body& body, <span class="keywordtype">void</span> (Body::*)(Item, parallel_do_feeder<_Item>&) <span class="keyword">const</span> |
| <a name="l00429"></a>00429 #<span class="keywordflow">if</span> __TBB_TASK_GROUP_CONTEXT |
| <a name="l00430"></a>00430 , task_group_context& context |
| <a name="l00431"></a>00431 #endif <span class="comment">// __TBB_TASK_GROUP_CONTEXT</span> |
| <a name="l00432"></a>00432 ) |
| <a name="l00433"></a>00433 { |
| <a name="l00434"></a>00434 run_parallel_do<Iterator, Body, typename strip<Item>::type>( first, last, body |
| <a name="l00435"></a>00435 <span class="preprocessor">#if __TBB_TASK_GROUP_CONTEXT</span> |
| <a name="l00436"></a>00436 <span class="preprocessor"></span> , context |
| <a name="l00437"></a>00437 <span class="preprocessor">#endif // __TBB_TASK_GROUP_CONTEXT</span> |
| <a name="l00438"></a>00438 <span class="preprocessor"></span> ); |
| <a name="l00439"></a>00439 } |
| <a name="l00440"></a>00440 |
| <a name="l00441"></a>00441 } <span class="comment">// namespace internal</span> |
| <a name="l00443"></a>00443 <span class="comment"></span> |
| <a name="l00444"></a>00444 |
| <a name="l00467"></a>00467 |
| <a name="l00468"></a>00468 |
| <a name="l00469"></a>00469 <span class="keyword">template</span><<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> Body> |
| <a name="l00470"></a><a class="code" href="a00274.html#g3383e2703977012b6f384d673410f1f7">00470</a> <span class="keywordtype">void</span> <a class="code" href="a00274.html#g3383e2703977012b6f384d673410f1f7">parallel_do</a>( Iterator first, Iterator last, <span class="keyword">const</span> Body& body ) |
| <a name="l00471"></a>00471 { |
| <a name="l00472"></a>00472 <span class="keywordflow">if</span> ( first == last ) |
| <a name="l00473"></a>00473 <span class="keywordflow">return</span>; |
| <a name="l00474"></a>00474 <span class="preprocessor">#if __TBB_TASK_GROUP_CONTEXT</span> |
| <a name="l00475"></a>00475 <span class="preprocessor"></span> <a class="code" href="a00201.html">task_group_context</a> context; |
| <a name="l00476"></a>00476 <span class="preprocessor">#endif // __TBB_TASK_GROUP_CONTEXT</span> |
| <a name="l00477"></a>00477 <span class="preprocessor"></span> internal::select_parallel_do( first, last, body, &Body::operator() |
| <a name="l00478"></a>00478 #<span class="keywordflow">if</span> __TBB_TASK_GROUP_CONTEXT |
| <a name="l00479"></a>00479 , context |
| <a name="l00480"></a>00480 #endif <span class="comment">// __TBB_TASK_GROUP_CONTEXT</span> |
| <a name="l00481"></a>00481 ); |
| <a name="l00482"></a>00482 } |
| <a name="l00483"></a>00483 |
| <a name="l00484"></a>00484 <span class="preprocessor">#if __TBB_TASK_GROUP_CONTEXT</span> |
| <a name="l00486"></a>00486 <span class="preprocessor"></span> |
| <a name="l00487"></a>00487 <span class="preprocessor">template<typename Iterator, typename Body> </span> |
| <a name="l00488"></a><a class="code" href="a00274.html#g2617dc9b88b3285a7212599d49f74228">00488</a> <span class="preprocessor"></span><span class="keywordtype">void</span> <a class="code" href="a00274.html#g3383e2703977012b6f384d673410f1f7">parallel_do</a>( Iterator first, Iterator last, <span class="keyword">const</span> Body& body, <a class="code" href="a00201.html">task_group_context</a>& context ) |
| <a name="l00489"></a>00489 { |
| <a name="l00490"></a>00490 <span class="keywordflow">if</span> ( first == last ) |
| <a name="l00491"></a>00491 <span class="keywordflow">return</span>; |
| <a name="l00492"></a>00492 internal::select_parallel_do( first, last, body, &Body::operator(), context ); |
| <a name="l00493"></a>00493 } |
| <a name="l00494"></a>00494 <span class="preprocessor">#endif // __TBB_TASK_GROUP_CONTEXT</span> |
| <a name="l00495"></a>00495 <span class="preprocessor"></span> |
| <a name="l00497"></a>00497 |
| <a name="l00498"></a>00498 } <span class="comment">// namespace </span> |
| <a name="l00499"></a>00499 |
| <a name="l00500"></a>00500 <span class="preprocessor">#endif </span><span class="comment">/* __TBB_parallel_do_H */</span> |
| </pre></div><hr> |
| <p></p> |
| Copyright © 2005-2010 Intel Corporation. All Rights Reserved. |
| <p></p> |
| Intel, Pentium, Intel Xeon, Itanium, Intel XScale and VTune are |
| registered trademarks or trademarks of Intel Corporation or its |
| subsidiaries in the United States and other countries. |
| <p></p> |
| * Other names and brands may be claimed as the property of others. |
