c++騫惰璁＄畻搴揟BB鍜孭PL鐨勫熀鏈敤娉?嫻庡崡杞歡寮€鍙憒灞變笢杞歡寮€鍙?嫻庡崡璧㈠痙縐戞妧杞歡寮€鍙戝叕鍙?/title> <meta name="keywords" content="c++騫惰璁＄畻搴揟BB鍜孭PL鐨勫熀鏈敤娉?/> <meta name="description" content="騫惰搴撳厖鍒嗗埄鐢ㄥ鏍哥殑浼樺娍錛岄€氳繃騫惰榪愮畻鎻愰珮紼嬪簭鏁堢巼錛屾湰鏂囦富瑕佷粙緇峜++涓袱涓煡鍚嶇殑騫惰搴擄紝涓€涓槸intel寮€鍙戠殑TBB錛屼竴涓槸寰蔣寮€鍙戠殑PPL銆傛湰鏂囧彧浠嬬粛鍏跺熀鏈殑甯哥敤鐢ㄦ硶錛氬茍琛岀畻娉曞拰浠誨姟銆偮燭BB錛圛ntel廬ThreadingBuildingBlo"/> <link href="/css/style.css" rel="stylesheet" type="text/css" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><dfn id="orz4q"><noscript id="orz4q"><xmp id="orz4q"><output id="orz4q"></output></xmp></noscript></dfn><dl id="orz4q"></dl><ol id="orz4q"><nav id="orz4q"><pre id="orz4q"></pre></nav></ol><dfn id="orz4q"></dfn><optgroup id="orz4q"></optgroup><center id="orz4q"><track id="orz4q"><rp id="orz4q"></rp></track></center><table id="orz4q"><ruby id="orz4q"><dl id="orz4q"><del id="orz4q"></del></dl></ruby></table><rt 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<div class="banner"><img src="/images/banner.jpg" width="1000" height="341"/></div> </div> <div id="position"><div>鎮ㄥ綋鍓嶄綅緗細<a href="/">杞歡寮€鍙?/a> >> <a href="/News/">鏂伴椈鍔ㄦ€?/a> >> <a href="/News/Industry/">杞歡寮€鍙戣涓氳祫璁?/a> >> 嫻忚鏂囩珷</div></div> <div class="youshi_f1" id="youshi_tdyx"> <div class="youshi01"> <h1 class="article_title">c++騫惰璁＄畻搴揟BB鍜孭PL鐨勫熀鏈敤娉?/h1> <div class="article_author">娣誨姞鏃墮棿錛?016-9-28 17:12:28 鏂囩珷浣滆€咃細<a href="/">嫻庡崡杞歡寮€鍙?/a> 嫻忚嬈℃暟錛?Script Language="Javascript" Src="/item/GetHits.asp?Action=Count&GetFlag=0&m=1&ID=2788"></Script></div> <div class="article_main"><div id="MyContent">騫惰搴撳厖鍒嗗埄鐢ㄥ鏍哥殑浼樺娍錛岄€氳繃騫惰榪愮畻鎻愰珮紼嬪簭鏁堢巼錛屾湰鏂囦富瑕佷粙緇峜++涓袱涓煡鍚嶇殑騫惰搴擄紝涓€涓槸intel寮€鍙戠殑TBB錛屼竴涓槸寰蔣寮€鍙戠殑PPL銆傛湰鏂囧彧浠嬬粛鍏跺熀鏈殑甯哥敤鐢ㄦ硶錛氬茍琛岀畻娉曞拰浠誨姟銆?/span> TBB錛圛ntel廬 Threading Building Blocks 錛?/span>TBB鏄痠ntel鐢ㄦ爣鍑哻++鍐欑殑涓€涓紑婧愮殑騫惰璁＄畻搴撱€傚畠鐨勭洰鐨勬槸鎻愬崌鏁版嵁騫惰璁＄畻鐨勮兘鍔涳紝鍙互鍦ㄤ粬鐨勫畼緗戜笂涓嬭澆鏈€鏂扮殑搴撳拰鏂囨。銆俆BB涓昏鍔熻兘錛?/span> 騫惰綆楁硶浠誨姟璋冨害騫惰瀹瑰櫒鍚屾鍘熻鍐呭瓨鍒嗛厤鍣?/span>TBB騫惰綆楁硶 parallel_for錛氬茍琛屾柟寮忛亶鍘嗕竴涓尯闂淬€?/span> parallel_for(1, 20000, [](int i){cout <parallel_for(blocked_range<size_t>(0, 20000), [](blocked_range<size_t>& r){ for (size_t i = r.begin(); i != r.end(); ++i) cout <});parallel_do鍜宲arallel_for_each錛氬皢綆楁硶搴旂敤浜庝竴涓尯闂?/span> vector<size_t> v;parallel_do(v.begin(), v.end(), [](size_t i){cout <parallel_for_each(v.begin(), v.end(), [](size_t i){cout < parallel_reduce 銆€銆€綾諱技浜巑ap_reduce錛屼絾鏄湁鍖哄埆銆傚畠鍏堝皢鍖洪棿鑷姩鍒嗙粍錛屽姣忎釜鍒嗙粍榪涜鑱氬悎(accumulate)璁＄畻錛屾瘡緇勫緱鍒頒竴涓粨鏋滐紝鏈€鍚庡皢鍚勭粍鐨勭粨鏋滆繘琛屾眹鑱?reduce)銆傝繖涓畻娉曠◢寰鏉備竴鐐癸紝parallel_reduce(range,identity,func,reduction)錛岀涓€涓弬鏁版槸鍖洪棿鑼冨洿錛岀浜屼釜鍙傛暟鏄綆楃殑鍒濆鍊鹼紝絎笁涓弬鏁版槸鑱氬悎鍑芥暟錛岀鍥涗釜鍙傛暟鏄眹鑱氬弬鏁般€?/span> 澶嶅埗浠ｇ爜float ParallelSum(float array [], size_t n) { return parallel_reduce( blocked_range<float*>(array, array + n), 0.f, [](const blocked_range<float*>& r, float value)->float { return std::accumulate(r.begin(), r.end(), value); }, std::plus<float>() );}澶嶅埗浠ｇ爜榪欎釜瀵規暟緇勬眰鍜岀殑渚嬪瓙灝辨槸鍏堣嚜鍔ㄥ垎緇勭劧鍚庡鍚勭粍涓殑鍏冪礌榪涜鑱氬悎绱姞錛屾渶鍚庡皢鍚勭粍緇撴灉姹囪仛鐩稿姞銆?/span> parallel_pipeline:騫惰鐨勭閬撹繃婊ゅ櫒 銆€銆€鏁版嵁嫻佺粡榪囦竴涓閬擄紝鍦ㄦ暟鎹祦鍔ㄧ殑榪囩▼涓緷嬈¤緇忚繃涓€浜涜繃婊ゅ櫒鐨勫鐞嗭紝鍏朵腑鏈変簺榪囨護鍣ㄥ彲鑳戒細騫惰澶勭悊鏁版嵁錛岃繖鏃跺氨鍙互鐢ㄥ埌騫惰鐨勭閬撹繃婊ゅ櫒銆備婦涓€涓緥瀛愶紝姣斿鎴戣璇誨叆涓€涓枃浠訛紝鍏堝皢鏂囦歡涓殑鏁板瓧鎻愬彇鍑烘潵錛屽啀灝嗘彁鍙栧嚭鏉ョ殑鏁板瓧鍋氫竴涓漿鎹紝鏈€鍚庡皢杞崲鍚庣殑鏁板瓧杈撳嚭鍒板彟澶栦竴涓枃浠朵腑銆傚叾涓鏂囦歡鍜岃緭鍑烘枃浠朵笉鑳藉茍鍏村幓鍋氾紝浣嗘槸涓棿鏁板瓧杞崲鐨勭幆鑺傚彲浠ュ茍琛屽幓鍋氱殑銆俻arallel_pipeline鐨勫師鍨嬶細 parallel_pipeline( max_number_of_live_tokens, make_filter<void,I1>(mode0,g0) & make_filter<I1,I2>(mode1,g1) & make_filter<I2,I3>(mode2,g2) & ... make_filter<In,void>(moden,gn) );銆€銆€絎竴涓弬鏁版槸鏈€澶х殑騫惰鏁幫紝鎴戜滑鍙互閫氳繃&榪炴帴澶氫釜filter錛岃繖浜沠ilter鏄『搴忔墽琛岀殑錛屽墠涓€涓猣ilter鐨勮緭鍑烘槸涓嬩竴涓猣ilter鐨勮緭鍏ャ€?/span> 澶嶅埗浠ｇ爜float RootMeanSquare( float* first, float* last ) { float sum=0; parallel_pipeline( /*max_number_of_live_token=*/16, make_filter<void,float*>( filter::serial, [&](flow_control& fc)-> float*{ if( first<last ) { return first++; } else { fc.stop(); return NULL; } } ) & make_filter<float*,float>( filter::parallel, [](float* p){return (*p)*(*p);} ) & make_filter<float,void>( filter::serial, [&](float x) {sum+=x;} ) ); return sqrt(sum);}澶嶅埗浠ｇ爜銆€銆€絎竴涓猣ilter鐢熸垚鏁版嵁錛堝浠庢枃浠朵腑璇誨彇鏁版嵁絳夛級錛岀浜屼釜filter瀵逛駭鐢熺殑鏁版嵁榪涜杞崲錛岀涓変釜filter鏄杞崲鍚庣殑鏁版嵁鍋氱瘡鍔犮€傚叾涓浜屼釜filter鏄彲浠ュ茍琛屽鐞嗙殑錛岄€氳繃filter::parallel鏉ユ寚瀹氬叾澶勭悊妯″紡銆?/span> parallel_sort:騫惰鎺掑簭 const int N = 1000000;float a[N];float b[N];parallel_sort(a, a + N);parallel_sort(b, b + N, std::greater<float>());parallel_invoke:騫惰璋冪敤錛屽茍琛岃皟鐢ㄥ涓嚱鏁?/span> void f();extern void bar(int); void RunFunctionsInParallel() { tbb::parallel_invoke(f, []{bar(2);}, []{bar(3);} );}TBB浠誨姟task_group琛ㄧず鍙互絳夊緟鎴栬€呭彇娑堢殑浠誨姟闆嗗悎 task_group g;g.run([]{TestPrint(); });g.run([]{TestPrint(); });g.run([]{TestPrint(); });g.wait(); PPL(Parallel Patterns Library)銆€銆€PPL鏄井杞紑鍙戠殑騫惰璁＄畻搴擄紝瀹冪殑鍔熻兘鍜孴BB鏄樊涓嶅鐨勶紝浣嗘槸PPL鍙兘鍦╳indows涓婁嬌鐢ㄣ€備簩鑰呭湪騫惰綆楁硶鐨勪嬌鐢ㄤ笂鍩烘湰涓婃槸涓€鏍風殑, 浣嗚繕鏄湁宸紓鐨勩€備簩鑰呯殑宸紓錛?/span> parallel_reduce鐨勫師鍨嬫湁浜涗笉鍚岋紝PPL鐨刾araller_reduce鍑芥暟澶氫竴涓弬鏁幫紝鍘熷瀷涓簆arallel_reduce(begin,end,identity,func,reduction), 姣攖bb澶氫簡涓€涓弬鏁幫紝浣嗘槸琛ㄨ揪鐨勬剰鎬濆樊涓嶅錛屼竴涓槸鍖洪棿錛屼竴涓槸鍖洪棿榪唬鍣ㄣ€?/span>PPL涓病鏈塸arallel_pipeline鎺ュ彛銆?/span>TBB鐨則ask娌℃湁PPL鐨則ask寮哄ぇ錛孭PL鐨則ask鍙互閾懼紡榪炵畫鎵ц榪樺彲浠ョ粍鍚堜換鍔★紝TBB鐨則ask鍒欎笉琛屻€?/span>PPL浠誨姟鐨勯摼寮忚繛緇墽琛宼hen 澶嶅埗浠ｇ爜int main(){ auto t = create_task([]() -> int { return 0; }); // Create a lambda that increments its input value. auto increment = [](int n) { return n + 1; }; // Run a chain of continuations and print the result. int result = t.then(increment).then(increment).then(increment).get(); cout << result << endl;}/* Output: 3*/澶嶅埗浠ｇ爜PPL浠誨姟鐨勭粍鍚?/span> 銆€銆€1.when_all鍙互鎵ц涓€緇勪換鍔★紝鎵€鏈変換鍔″畬鎴愪箣鍚庡皢鎵€鏈変換鍔＄殑緇撴灉榪斿洖鍒頒竴涓泦鍚堜腑銆傝姹傝緇勪換鍔′腑鐨勬墍鏈変換鍔＄殑榪斿洖鍊肩被鍨嬮兘鐩稿悓銆?/span> 澶嶅埗浠ｇ爜array<task<int>, 3> tasks ={ create_task([]() -> int { return 88; }), create_task([]() -> int { return 42; }), create_task([]() -> int { return 99; })}; auto joinTask = when_all(begin(tasks), end(tasks)).then([](vector<int> results){ cout << "The sum is " << accumulate(begin(results), end(results), 0) << '.' << endl;}); // Print a message from the joining thread.cout << "Hello from the joining thread." << endl; // Wait for the tasks to finish.joinTask.wait();澶嶅埗浠ｇ爜2.when_any浠誨姟緇勪腑鐨勬煇涓€涓換鍔℃墽琛屽畬鎴愪箣鍚庯紝榪斿洖涓€涓猵air錛岄敭鍊煎鏄粨鏋滃拰浠誨姟搴忓彿銆?/span> 澶嶅埗浠ｇ爜array<task<int>, 3> tasks = { create_task([]() -> int { return 88; }), create_task([]() -> int { return 42; }), create_task([]() -> int { return 99; }) }; // Select the first to finish. when_any(begin(tasks), end(tasks)).then([](pair<int, size_t> result) { cout << "First task to finish returns " << result.first << " and has index " << result.second<<endl; }).wait();//output: First task to finish returns 42 and has index 1.澶嶅埗浠ｇ爜 鎬葷粨錛?/span>銆€銆€ppl鍜宼bb涓や釜騫惰榪愮畻搴撳姛鑳界浉浼鹼紝濡傛灉闇€瑕佽法騫沖彴鍒欓€夋嫨tbb, 鍚﹀垯閫夋嫨ppl銆俻pl鍦ㄤ換鍔¤皟搴︿笂姣攖bb寮哄ぇ錛宼bb鐢變簬璁捐涓婄殑鍘熷洜涓嶈兘鍋氬埌浠誨姟鐨勮繛緇墽琛屼互鍙婁換鍔＄殑緇勫悎錛屼絾鏄痶bb鏈夎法騫沖彴鐨勪紭鍔褲€?/span> </div> </div> </div> </div> <div class="clear"></div> <div class="foot"> <div class="foot_menu"> <ul> <li><a href="/About/">鍏充簬鎴戜滑</a></li> <li><a href="/Advantage/">寮€鍙戜紭鍔?/a></li> <li><a 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锘?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> c++騫惰璁＄畻搴揟BB鍜孭PL鐨勫熀鏈敤娉?嫻庡崡杞歡寮€鍙憒灞變笢杞歡寮€鍙?嫻庡崡璧㈠痙縐戞妧杞歡寮€鍙戝叕鍙?/title> <meta name="keywords" content="c++騫惰璁＄畻搴揟BB鍜孭PL鐨勫熀鏈敤娉?/> <meta name="description" content="騫惰搴撳厖鍒嗗埄鐢ㄥ鏍哥殑浼樺娍錛岄€氳繃騫惰榪愮畻鎻愰珮紼嬪簭鏁堢巼錛屾湰鏂囦富瑕佷粙緇峜++涓袱涓煡鍚嶇殑騫惰搴擄紝涓€涓槸intel寮€鍙戠殑TBB錛屼竴涓槸寰蔣寮€鍙戠殑PPL銆傛湰鏂囧彧浠嬬粛鍏跺熀鏈殑甯哥敤鐢ㄦ硶錛氬茍琛岀畻娉曞拰浠誨姟銆偮燭BB錛圛ntel廬ThreadingBuildingBlo"/> <link href="/css/style.css" rel="stylesheet" type="text/css" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><dfn id="orz4q"><noscript id="orz4q"><xmp id="orz4q"><output id="orz4q"></output></xmp></noscript></dfn><dl id="orz4q"></dl><ol id="orz4q"><nav id="orz4q"><pre id="orz4q"></pre></nav></ol><dfn id="orz4q"></dfn><optgroup id="orz4q"></optgroup><center id="orz4q"><track id="orz4q"><rp 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錛?/span>TBB鏄痠ntel鐢ㄦ爣鍑哻++鍐欑殑涓€涓紑婧愮殑騫惰璁＄畻搴撱€傚畠鐨勭洰鐨勬槸鎻愬崌鏁版嵁騫惰璁＄畻鐨勮兘鍔涳紝鍙互鍦ㄤ粬鐨勫畼緗戜笂涓嬭澆鏈€鏂扮殑搴撳拰鏂囨。銆俆BB涓昏鍔熻兘錛?/span> 騫惰綆楁硶浠誨姟璋冨害騫惰瀹瑰櫒鍚屾鍘熻鍐呭瓨鍒嗛厤鍣?/span>TBB騫惰綆楁硶 parallel_for錛氬茍琛屾柟寮忛亶鍘嗕竴涓尯闂淬€?/span> parallel_for(1, 20000, [](int i){cout <parallel_for(blocked_range<size_t>(0, 20000), [](blocked_range<size_t>& r){ for (size_t i = r.begin(); i != r.end(); ++i) cout <});parallel_do鍜宲arallel_for_each錛氬皢綆楁硶搴旂敤浜庝竴涓尯闂?/span> vector<size_t> v;parallel_do(v.begin(), v.end(), [](size_t i){cout <parallel_for_each(v.begin(), v.end(), [](size_t i){cout < parallel_reduce 銆€銆€綾諱技浜巑ap_reduce錛屼絾鏄湁鍖哄埆銆傚畠鍏堝皢鍖洪棿鑷姩鍒嗙粍錛屽姣忎釜鍒嗙粍榪涜鑱氬悎(accumulate)璁＄畻錛屾瘡緇勫緱鍒頒竴涓粨鏋滐紝鏈€鍚庡皢鍚勭粍鐨勭粨鏋滆繘琛屾眹鑱?reduce)銆傝繖涓畻娉曠◢寰鏉備竴鐐癸紝parallel_reduce(range,identity,func,reduction)錛岀涓€涓弬鏁版槸鍖洪棿鑼冨洿錛岀浜屼釜鍙傛暟鏄綆楃殑鍒濆鍊鹼紝絎笁涓弬鏁版槸鑱氬悎鍑芥暟錛岀鍥涗釜鍙傛暟鏄眹鑱氬弬鏁般€?/span> 澶嶅埗浠ｇ爜float ParallelSum(float array [], size_t n) { return parallel_reduce( blocked_range<float*>(array, array + n), 0.f, [](const blocked_range<float*>& r, float value)->float { return std::accumulate(r.begin(), r.end(), value); }, std::plus<float>() );}澶嶅埗浠ｇ爜榪欎釜瀵規暟緇勬眰鍜岀殑渚嬪瓙灝辨槸鍏堣嚜鍔ㄥ垎緇勭劧鍚庡鍚勭粍涓殑鍏冪礌榪涜鑱氬悎绱姞錛屾渶鍚庡皢鍚勭粍緇撴灉姹囪仛鐩稿姞銆?/span> parallel_pipeline:騫惰鐨勭閬撹繃婊ゅ櫒 銆€銆€鏁版嵁嫻佺粡榪囦竴涓閬擄紝鍦ㄦ暟鎹祦鍔ㄧ殑榪囩▼涓緷嬈¤緇忚繃涓€浜涜繃婊ゅ櫒鐨勫鐞嗭紝鍏朵腑鏈変簺榪囨護鍣ㄥ彲鑳戒細騫惰澶勭悊鏁版嵁錛岃繖鏃跺氨鍙互鐢ㄥ埌騫惰鐨勭閬撹繃婊ゅ櫒銆備婦涓€涓緥瀛愶紝姣斿鎴戣璇誨叆涓€涓枃浠訛紝鍏堝皢鏂囦歡涓殑鏁板瓧鎻愬彇鍑烘潵錛屽啀灝嗘彁鍙栧嚭鏉ョ殑鏁板瓧鍋氫竴涓漿鎹紝鏈€鍚庡皢杞崲鍚庣殑鏁板瓧杈撳嚭鍒板彟澶栦竴涓枃浠朵腑銆傚叾涓鏂囦歡鍜岃緭鍑烘枃浠朵笉鑳藉茍鍏村幓鍋氾紝浣嗘槸涓棿鏁板瓧杞崲鐨勭幆鑺傚彲浠ュ茍琛屽幓鍋氱殑銆俻arallel_pipeline鐨勫師鍨嬶細 parallel_pipeline( max_number_of_live_tokens, make_filter<void,I1>(mode0,g0) & make_filter<I1,I2>(mode1,g1) & make_filter<I2,I3>(mode2,g2) & ... make_filter<In,void>(moden,gn) );銆€銆€絎竴涓弬鏁版槸鏈€澶х殑騫惰鏁幫紝鎴戜滑鍙互閫氳繃&榪炴帴澶氫釜filter錛岃繖浜沠ilter鏄『搴忔墽琛岀殑錛屽墠涓€涓猣ilter鐨勮緭鍑烘槸涓嬩竴涓猣ilter鐨勮緭鍏ャ€?/span> 澶嶅埗浠ｇ爜float RootMeanSquare( float* first, float* last ) { float sum=0; parallel_pipeline( /*max_number_of_live_token=*/16, make_filter<void,float*>( filter::serial, [&](flow_control& fc)-> float*{ if( first<last ) { return first++; } else { fc.stop(); return NULL; } } ) & make_filter<float*,float>( filter::parallel, [](float* p){return (*p)*(*p);} ) & make_filter<float,void>( filter::serial, [&](float x) {sum+=x;} ) ); return sqrt(sum);}澶嶅埗浠ｇ爜銆€銆€絎竴涓猣ilter鐢熸垚鏁版嵁錛堝浠庢枃浠朵腑璇誨彇鏁版嵁絳夛級錛岀浜屼釜filter瀵逛駭鐢熺殑鏁版嵁榪涜杞崲錛岀涓変釜filter鏄杞崲鍚庣殑鏁版嵁鍋氱瘡鍔犮€傚叾涓浜屼釜filter鏄彲浠ュ茍琛屽鐞嗙殑錛岄€氳繃filter::parallel鏉ユ寚瀹氬叾澶勭悊妯″紡銆?/span> parallel_sort:騫惰鎺掑簭 const int N = 1000000;float a[N];float b[N];parallel_sort(a, a + N);parallel_sort(b, b + N, std::greater<float>());parallel_invoke:騫惰璋冪敤錛屽茍琛岃皟鐢ㄥ涓嚱鏁?/span> void f();extern void bar(int); void RunFunctionsInParallel() { tbb::parallel_invoke(f, []{bar(2);}, []{bar(3);} );}TBB浠誨姟task_group琛ㄧず鍙互絳夊緟鎴栬€呭彇娑堢殑浠誨姟闆嗗悎 task_group g;g.run([]{TestPrint(); });g.run([]{TestPrint(); });g.run([]{TestPrint(); });g.wait(); PPL(Parallel Patterns Library)銆€銆€PPL鏄井杞紑鍙戠殑騫惰璁＄畻搴擄紝瀹冪殑鍔熻兘鍜孴BB鏄樊涓嶅鐨勶紝浣嗘槸PPL鍙兘鍦╳indows涓婁嬌鐢ㄣ€備簩鑰呭湪騫惰綆楁硶鐨勪嬌鐢ㄤ笂鍩烘湰涓婃槸涓€鏍風殑, 浣嗚繕鏄湁宸紓鐨勩€備簩鑰呯殑宸紓錛?/span> parallel_reduce鐨勫師鍨嬫湁浜涗笉鍚岋紝PPL鐨刾araller_reduce鍑芥暟澶氫竴涓弬鏁幫紝鍘熷瀷涓簆arallel_reduce(begin,end,identity,func,reduction), 姣攖bb澶氫簡涓€涓弬鏁幫紝浣嗘槸琛ㄨ揪鐨勬剰鎬濆樊涓嶅錛屼竴涓槸鍖洪棿錛屼竴涓槸鍖洪棿榪唬鍣ㄣ€?/span>PPL涓病鏈塸arallel_pipeline鎺ュ彛銆?/span>TBB鐨則ask娌℃湁PPL鐨則ask寮哄ぇ錛孭PL鐨則ask鍙互閾懼紡榪炵畫鎵ц榪樺彲浠ョ粍鍚堜換鍔★紝TBB鐨則ask鍒欎笉琛屻€?/span>PPL浠誨姟鐨勯摼寮忚繛緇墽琛宼hen 澶嶅埗浠ｇ爜int main(){ auto t = create_task([]() -> int { return 0; }); // Create a lambda that increments its input value. auto increment = [](int n) { return n + 1; }; // Run a chain of continuations and print the result. int result = t.then(increment).then(increment).then(increment).get(); cout << result << endl;}/* Output: 3*/澶嶅埗浠ｇ爜PPL浠誨姟鐨勭粍鍚?/span> 銆€銆€1.when_all鍙互鎵ц涓€緇勪換鍔★紝鎵€鏈変換鍔″畬鎴愪箣鍚庡皢鎵€鏈変換鍔＄殑緇撴灉榪斿洖鍒頒竴涓泦鍚堜腑銆傝姹傝緇勪換鍔′腑鐨勬墍鏈変換鍔＄殑榪斿洖鍊肩被鍨嬮兘鐩稿悓銆?/span> 澶嶅埗浠ｇ爜array<task<int>, 3> tasks ={ create_task([]() -> int { return 88; }), create_task([]() -> int { return 42; }), create_task([]() -> int { return 99; })}; auto joinTask = when_all(begin(tasks), end(tasks)).then([](vector<int> results){ cout << "The sum is " << accumulate(begin(results), end(results), 0) << '.' << endl;}); // Print a message from the joining thread.cout << "Hello from the joining thread." << endl; // Wait for the tasks to finish.joinTask.wait();澶嶅埗浠ｇ爜2.when_any浠誨姟緇勪腑鐨勬煇涓€涓換鍔℃墽琛屽畬鎴愪箣鍚庯紝榪斿洖涓€涓猵air錛岄敭鍊煎鏄粨鏋滃拰浠誨姟搴忓彿銆?/span> 澶嶅埗浠ｇ爜array<task<int>, 3> tasks = { create_task([]() -> int { return 88; }), create_task([]() -> int { return 42; }), create_task([]() -> int { return 99; }) }; // Select the first to finish. when_any(begin(tasks), end(tasks)).then([](pair<int, size_t> result) { cout << "First task to finish returns " << result.first << " and has index " << result.second<<endl; }).wait();//output: First task to finish returns 42 and has index 1.澶嶅埗浠ｇ爜 鎬葷粨錛?/span>銆€銆€ppl鍜宼bb涓や釜騫惰榪愮畻搴撳姛鑳界浉浼鹼紝濡傛灉闇€瑕佽法騫沖彴鍒欓€夋嫨tbb, 鍚﹀垯閫夋嫨ppl銆俻pl鍦ㄤ換鍔¤皟搴︿笂姣攖bb寮哄ぇ錛宼bb鐢變簬璁捐涓婄殑鍘熷洜涓嶈兘鍋氬埌浠誨姟鐨勮繛緇墽琛屼互鍙婁換鍔＄殑緇勫悎錛屼絾鏄痶bb鏈夎法騫沖彴鐨勪紭鍔褲€?/span> </div> </div> </div> </div> <div class="clear"></div> <div class="foot"> <div 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