{"id":2063,"date":"2025-03-24T08:48:25","date_gmt":"2025-03-23T23:48:25","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=2063"},"modified":"2025-03-24T08:48:50","modified_gmt":"2025-03-23T23:48:50","slug":"%e5%ae%8c%e5%85%a8%e8%a7%a3%e8%aa%ac%ef%bc%81c%e3%81%a7%e5%ae%9f%e8%a1%8c%e6%99%82%e9%96%93%e3%82%92%e6%ad%a3%e7%a2%ba%e3%81%ab%e8%a8%88%e6%b8%ac%e3%81%99%e3%82%8b7%e3%81%a4%e3%81%ae%e5%ae%9f","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=2063","title":{"rendered":"\u5b8c\u5168\u89e3\u8aac\uff01C++\u3067\u5b9f\u884c\u6642\u9593\u3092\u6b63\u78ba\u306b\u8a08\u6e2c\u3059\u308b7\u3064\u306e\u5b9f\u8df5\u7684\u30c6\u30af\u30cb\u30c3\u30af"},"content":{"rendered":"\n<div class=\"toc\"><br \/>\n<b>Warning<\/b>:  Undefined array key \"is_admin\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>116<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_category_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>121<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>128<\/b><br \/>\n    <div id=\"toc_container\" class=\"sgb-toc--bullets js-smooth-scroll\" data-dialog-title=\"\u76ee\u6b21\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">C++\u3067\u306e\u6642\u9593\u8a08\u6e2c\u306e\u57fa\u790e\u77e5\u8b58<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u306a\u305c\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u6642\u9593\u3092\u8a08\u6e2c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u304b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">\u6642\u9593\u8a08\u6e2c\u3067\u6ce8\u610f\u3059\u3079\u304d3\u3064\u306e\u843d\u3068\u3057\u7a74<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">C++\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3088\u308b\u6642\u9593\u8a08\u6e2c\u624b\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">chrono\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u305f\u9ad8\u7cbe\u5ea6\u306a\u6642\u9593\u8a08\u6e2c<\/a>      <\/li>      <li>        <a href=\"#i-5\">time.h\u306b\u3088\u308b\u57fa\u672c\u7684\u306a\u6642\u9593\u8a08\u6e2c<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-6\">\u5404\u624b\u6cd5\u306e\u7cbe\u5ea6\u3068\u7279\u5fb4\u306e\u6bd4\u8f03<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-7\">\u5b9f\u8df5\u7684\u306a\u6642\u9593\u8a08\u6e2c\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-8\">\u30de\u30a4\u30af\u30ed\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306e\u5b9f\u88c5\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-9\">\u8a08\u6e2c\u7d50\u679c\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u5916\u90e8\u8981\u56e0\u306e\u5236\u5fa1<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-10\">\u7d71\u8a08\u7684\u306b\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u8a08\u6e2c\u3092\u884c\u3046\u305f\u3081\u306e\u30b3\u30c4<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-11\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u305f\u3081\u306e\u8a08\u6e2c\u6226\u7565<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-12\">\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u7279\u5b9a\u306e\u305f\u3081\u306e\u52b9\u679c\u7684\u306a\u8a08\u6e2c\u624b\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-13\">\u7d99\u7d9a\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306e\u5b9f\u88c5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-14\">\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b\u3068\u89e3\u8aac<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-15\">\u7c21\u5358\u306a\u95a2\u6570\u306e\u5b9f\u884c\u6642\u9593\u8a08\u6e2c<\/a>      <\/li>      <li>        <a href=\"#i-16\">\u8907\u96d1\u306a\u51e6\u7406\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8a08\u6e2c<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-17\">\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u74b0\u5883\u3067\u306e\u6b63\u78ba\u306a\u6642\u9593\u8a08\u6e2c<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-18\">\u3088\u304f\u3042\u308b\u30c8\u30e9\u30d6\u30eb\u3068\u89e3\u6c7a\u7b56<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-19\">\u8a08\u6e2c\u7d50\u679c\u306e\u3070\u3089\u3064\u304d\u3078\u306e\u5bfe\u51e6\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-20\">\u6700\u9069\u5316\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u8a08\u6e2c\u306b\u4e0e\u3048\u308b\u5f71\u97ff<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-21\">\u30c7\u30d0\u30c3\u30b0\u30d3\u30eb\u30c9\u3068\u5b9f\u884c\u74b0\u5883\u3067\u306e\u9055\u3044<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-22\">\u307e\u3068\u3081\u3068\u767a\u5c55\u7684\u306a\u8a71\u984c<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-23\">\u6642\u9593\u8a08\u6e2c\u306e\u76ee\u7684\u306b\u5fdc\u3058\u305f\u624b\u6cd5\u306e\u9078\u3073\u65b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-24\">\u3088\u308a\u9ad8\u5ea6\u306a\u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u30c4\u30fc\u30eb\u3078\u306e\u767a\u5c55<\/a>      <\/li>    <\/ul>  <\/li><\/ul>\n      <a href=\"#\" class=\"sgb-toc-button js-toc-button\" rel=\"nofollow\" data-open-dialog=\"true\"><i class=\"fa fa-list\"><\/i><span class=\"sgb-toc-button__text\">\u76ee\u6b21\u3078<\/span><\/a>\n    <\/div><\/div><h2 class=\"wp-block-heading\" id=\"i-0\">C++\u3067\u306e\u6642\u9593\u8a08\u6e2c\u306e\u57fa\u790e\u77e5\u8b58<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u306a\u305c\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u6642\u9593\u3092\u8a08\u6e2c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u304b<\/h3>\n\n\n\n<p>\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u6642\u9593\u3092\u8a08\u6e2c\u3059\u308b\u3053\u3068\u306f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u91cd\u8981\u306a\u4f5c\u696d\u3067\u3059\u3002\u305d\u306e\u4e3b\u306a\u7406\u7531\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8981\u4ef6\u306e\u691c\u8a3c<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b7\u30b9\u30c6\u30e0\u306e\u5fdc\u7b54\u6642\u9593\u304c\u8981\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d<\/li>\n\n\n\n<li>\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u306b\u5f71\u97ff\u3059\u308b\u51e6\u7406\u306e\u6240\u8981\u6642\u9593\u3092\u628a\u63e1<\/li>\n\n\n\n<li>\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u6027\u304c\u6c42\u3081\u3089\u308c\u308b\u51e6\u7406\u306e\u30c7\u30c3\u30c9\u30e9\u30a4\u30f3\u9075\u5b88\u3092\u78ba\u8a8d<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6700\u9069\u5316\u306e\u52b9\u679c\u6e2c\u5b9a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9f\u88c5\u306e\u6539\u5584\u306b\u3088\u308b\u52b9\u679c\u3092\u5b9a\u91cf\u7684\u306b\u8a55\u4fa1<\/li>\n\n\n\n<li>\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u5909\u66f4\u306b\u3088\u308b\u6027\u80fd\u5411\u4e0a\u3092\u6570\u5024\u5316<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3068\u5b9f\u884c\u6642\u9593\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u3092\u5206\u6790<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306e\u7279\u5b9a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u51e6\u7406\u6642\u9593\u306e\u5927\u90e8\u5206\u3092\u5360\u3081\u308b\u7b87\u6240\u3092\u767a\u898b<\/li>\n\n\n\n<li>\u4e88\u60f3\u5916\u306b\u6642\u9593\u304c\u304b\u304b\u3063\u3066\u3044\u308b\u51e6\u7406\u3092\u7279\u5b9a<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584\u306e\u512a\u5148\u9806\u4f4d\u4ed8\u3051<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">\u6642\u9593\u8a08\u6e2c\u3067\u6ce8\u610f\u3059\u3079\u304d3\u3064\u306e\u843d\u3068\u3057\u7a74<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6e2c\u5b9a\u74b0\u5883\u306b\u3088\u308b\u5909\u52d5<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CPU\u306e\u52d5\u4f5c\u5468\u6ce2\u6570\u306e\u5909\u5316\uff08\u7701\u96fb\u529b\u30e2\u30fc\u30c9\u306e\u5f71\u97ff\uff09<\/li>\n\n\n\n<li>OS\u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u306b\u3088\u308b\u5272\u308a\u8fbc\u307f<\/li>\n\n\n\n<li>\u4ed6\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u3088\u308b\u30ea\u30bd\u30fc\u30b9\u7af6\u5408<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u60aa\u3044\u4f8b\uff1a\u74b0\u5883\u306b\u3088\u308b\u5909\u52d5\u3092\u8003\u616e\u3057\u3066\u3044\u306a\u3044\u8a08\u6e2c\nauto start = std::chrono::high_resolution_clock::now();\nheavy_process();  \/\/ \u8a08\u6e2c\u5bfe\u8c61\u306e\u51e6\u7406\nauto end = std::chrono::high_resolution_clock::now();\nauto duration = std::chrono::duration_cast&lt;std::chrono::milliseconds&gt;(end - start);\nstd::cout &lt;&lt; \"\u51e6\u7406\u6642\u9593: \" &lt;&lt; duration.count() &lt;&lt; \"ms\\n\";\n\n\/\/ \u826f\u3044\u4f8b\uff1a\u8907\u6570\u56de\u306e\u6e2c\u5b9a\u306b\u3088\u308b\u5e73\u5747\u5024\u306e\u7b97\u51fa\nconst int ITERATIONS = 100;\nstd::vector&lt;long long&gt; measurements;\nmeasurements.reserve(ITERATIONS);\n\nfor (int i = 0; i &lt; ITERATIONS; ++i) {\n    auto start = std::chrono::high_resolution_clock::now();\n    heavy_process();\n    auto end = std::chrono::high_resolution_clock::now();\n    measurements.push_back(\n        std::chrono::duration_cast&lt;std::chrono::milliseconds&gt;(end - start).count()\n    );\n}\n\n\/\/ \u5e73\u5747\u5024\u3068\u6a19\u6e96\u504f\u5dee\u3092\u8a08\u7b97\ndouble avg = std::accumulate(measurements.begin(), measurements.end(), 0.0) \/ ITERATIONS;<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u6700\u9069\u5316\u306b\u3088\u308b\u5f71\u97ff<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u30ec\u30d9\u30eb\u306b\u3088\u308b\u5b9f\u884c\u6642\u9593\u306e\u5909\u5316<\/li>\n\n\n\n<li>\u30c7\u30c3\u30c9\u30b3\u30fc\u30c9\u9664\u53bb\u306b\u3088\u308b\u8a08\u6e2c\u5bfe\u8c61\u51e6\u7406\u306e\u6d88\u5931<\/li>\n\n\n\n<li>\u30a4\u30f3\u30e9\u30a4\u30f3\u5c55\u958b\u306b\u3088\u308b\u5b9f\u884c\u6642\u9593\u306e\u5909\u5316<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u60aa\u3044\u4f8b\uff1a\u6700\u9069\u5316\u306e\u5f71\u97ff\u3092\u53d7\u3051\u3084\u3059\u3044\u5b9f\u88c5\nvoid benchmark_function() {\n    int result = 0;\n    for (int i = 0; i &lt; 1000000; ++i) {\n        result += i;  \/\/ \u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u6700\u9069\u5316\u3067\u7f6e\u304d\u63db\u3048\u308b\u53ef\u80fd\u6027\n    }\n}\n\n\/\/ \u826f\u3044\u4f8b\uff1a\u6700\u9069\u5316\u306e\u5f71\u97ff\u3092\u5236\u5fa1\n[[nodiscard]] int benchmark_function() {\n    volatile int result = 0;  \/\/ volatile\u3067\u6700\u9069\u5316\u3092\u9632\u6b62\n    for (int i = 0; i &lt; 1000000; ++i) {\n        result += i;\n    }\n    return result;  \/\/ \u7d50\u679c\u3092\u8fd4\u3057\u3066\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u6700\u9069\u5316\u9664\u53bb\u3092\u9632\u6b62\n}<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u8a08\u6e2c\u7c92\u5ea6\u3068\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8a08\u6e2c\u51e6\u7406\u81ea\u4f53\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9<\/li>\n\n\n\n<li>\u6642\u9593\u8a08\u6e2c\u306e\u7cbe\u5ea6\u3068\u5206\u89e3\u80fd\u306e\u9650\u754c<\/li>\n\n\n\n<li>\u6975\u5c0f\u6642\u9593\u306e\u8a08\u6e2c\u306b\u304a\u3051\u308b\u8aa4\u5dee<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u60aa\u3044\u4f8b\uff1a\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5927\u304d\u3044\u8a08\u6e2c\u65b9\u6cd5\nvoid measure_small_operations() {\n    for (int i = 0; i &lt; 1000; ++i) {\n        auto start = std::chrono::high_resolution_clock::now();  \/\/ \u6bce\u56de\u306e\u30af\u30ed\u30c3\u30af\u53d6\u5f97\n        small_operation();\n        auto end = std::chrono::high_resolution_clock::now();\n        \/\/ ... \u6e2c\u5b9a\u7d50\u679c\u306e\u51e6\u7406\n    }\n}\n\n\/\/ \u826f\u3044\u4f8b\uff1a\u30d0\u30c3\u30c1\u51e6\u7406\u306b\u3088\u308b\u52b9\u7387\u7684\u306a\u8a08\u6e2c\nvoid measure_small_operations_batch() {\n    const int BATCH_SIZE = 1000;\n    auto start = std::chrono::high_resolution_clock::now();\n    for (int i = 0; i &lt; BATCH_SIZE; ++i) {\n        small_operation();\n    }\n    auto end = std::chrono::high_resolution_clock::now();\n    auto avg_duration = std::chrono::duration_cast&lt;std::chrono::nanoseconds&gt;(\n        end - start).count() \/ BATCH_SIZE;\n}<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u843d\u3068\u3057\u7a74\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306a\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6642\u9593\u8a08\u6e2c\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001C++\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u305f\u5177\u4f53\u7684\u306a\u6642\u9593\u8a08\u6e2c\u624b\u6cd5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">C++\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3088\u308b\u6642\u9593\u8a08\u6e2c\u624b\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">chrono\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u305f\u9ad8\u7cbe\u5ea6\u306a\u6642\u9593\u8a08\u6e2c<\/h3>\n\n\n\n<p>C++11\u3067\u5c0e\u5165\u3055\u308c\u305f<code>std::chrono<\/code>\u306f\u3001\u73fe\u4ee3\u306eC++\u3067\u306e\u6642\u9593\u8a08\u6e2c\u306b\u304a\u3044\u3066\u6700\u3082\u63a8\u5968\u3055\u308c\u308b\u65b9\u6cd5\u3067\u3059\u3002\u9ad8\u7cbe\u5ea6\u306a\u6642\u9593\u8a08\u6e2c\u304c\u53ef\u80fd\u3067\u3001\u578b\u5b89\u5168\u6027\u3082\u78ba\u4fdd\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;chrono&gt;\n#include &lt;iostream&gt;\n\n\/\/ \u57fa\u672c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\nvoid basic_chrono_example() {\n    \/\/ \u73fe\u5728\u6642\u523b\u3092\u53d6\u5f97\n    auto start = std::chrono::high_resolution_clock::now();\n\n    \/\/ \u8a08\u6e2c\u5bfe\u8c61\u306e\u51e6\u7406\n    for (int i = 0; i &lt; 1000000; ++i) {\n        \/\/ some computation\n    }\n\n    \/\/ \u7d42\u4e86\u6642\u523b\u3092\u53d6\u5f97\n    auto end = std::chrono::high_resolution_clock::now();\n\n    \/\/ \u7d4c\u904e\u6642\u9593\u3092\u8a08\u7b97\uff08\u30df\u30ea\u79d2\u5358\u4f4d\uff09\n    auto duration = std::chrono::duration_cast&lt;std::chrono::milliseconds&gt;(end - start);\n    std::cout &lt;&lt; \"\u5b9f\u884c\u6642\u9593: \" &lt;&lt; duration.count() &lt;&lt; \" \u30df\u30ea\u79d2\\n\";\n}\n\n\/\/ \u3088\u308a\u8a73\u7d30\u306a\u6642\u9593\u5358\u4f4d\u306e\u4f7f\u7528\u4f8b\nvoid detailed_chrono_example() {\n    using namespace std::chrono;\n    auto start = high_resolution_clock::now();\n\n    \/\/ \u8a08\u6e2c\u5bfe\u8c61\u306e\u51e6\u7406\n\n    auto end = high_resolution_clock::now();\n\n    \/\/ \u69d8\u3005\u306a\u6642\u9593\u5358\u4f4d\u3067\u306e\u8a08\u6e2c\n    auto ns = duration_cast&lt;nanoseconds&gt;(end - start).count();\n    auto us = duration_cast&lt;microseconds&gt;(end - start).count();\n    auto ms = duration_cast&lt;milliseconds&gt;(end - start).count();\n    auto s = duration_cast&lt;seconds&gt;(end - start).count();\n\n    std::cout &lt;&lt; \"\u5b9f\u884c\u6642\u9593:\\n\"\n              &lt;&lt; ns &lt;&lt; \" \u30ca\u30ce\u79d2\\n\"\n              &lt;&lt; us &lt;&lt; \" \u30de\u30a4\u30af\u30ed\u79d2\\n\"\n              &lt;&lt; ms &lt;&lt; \" \u30df\u30ea\u79d2\\n\"\n              &lt;&lt; s &lt;&lt; \" \u79d2\\n\";\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">time.h\u306b\u3088\u308b\u57fa\u672c\u7684\u306a\u6642\u9593\u8a08\u6e2c<\/h3>\n\n\n\n<p>\u5f93\u6765\u304b\u3089\u3042\u308b<code>time.h<\/code>\uff08C++\u3067\u306f<code>ctime<\/code>\uff09\u3082\u3001\u57fa\u672c\u7684\u306a\u6642\u9593\u8a08\u6e2c\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u7cbe\u5ea6\u306f\u6bd4\u8f03\u7684\u4f4e\u3044\u3082\u306e\u306e\u3001\u30b7\u30f3\u30d7\u30eb\u3067\u5206\u304b\u308a\u3084\u3059\u3044\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;ctime&gt;\n#include &lt;iostream&gt;\n\nvoid time_h_example() {\n    \/\/ \u30d7\u30ed\u30bb\u30c3\u30b5\u6642\u9593\u3092\u8a08\u6e2c\n    clock_t start = clock();\n\n    \/\/ \u8a08\u6e2c\u5bfe\u8c61\u306e\u51e6\u7406\n    for (int i = 0; i &lt; 1000000; ++i) {\n        \/\/ some computation\n    }\n\n    clock_t end = clock();\n\n    \/\/ \u7d4c\u904e\u6642\u9593\u3092\u30df\u30ea\u79d2\u306b\u5909\u63db\n    double duration = 1000.0 * (end - start) \/ CLOCKS_PER_SEC;\n    std::cout &lt;&lt; \"\u5b9f\u884c\u6642\u9593: \" &lt;&lt; duration &lt;&lt; \" \u30df\u30ea\u79d2\\n\";\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">\u5404\u624b\u6cd5\u306e\u7cbe\u5ea6\u3068\u7279\u5fb4\u306e\u6bd4\u8f03<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u8868\u3067\u3001\u4e3b\u306a\u6642\u9593\u8a08\u6e2c\u624b\u6cd5\u306e\u7279\u5fb4\u3092\u6bd4\u8f03\u3057\u307e\u3059\uff1a<\/p>\n\n\n<div id=\"id-fcd4b331-26e8-4e91-99e4-ab2a252a70d4\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7279\u5fb4<\/th><th>std::chrono<\/th><th>time.h (clock)<\/th><\/tr><\/thead><tbody><tr><td>\u7cbe\u5ea6<\/td><td>\u30ca\u30ce\u79d2\u30ec\u30d9\u30eb<\/td><td>\u30df\u30ea\u79d2\u30ec\u30d9\u30eb<\/td><\/tr><tr><td>\u578b\u5b89\u5168\u6027<\/td><td>\u25cb<\/td><td>\u00d7<\/td><\/tr><tr><td>\u4f7f\u3044\u3084\u3059\u3055<\/td><td>\u3084\u3084\u8907\u96d1<\/td><td>\u30b7\u30f3\u30d7\u30eb<\/td><\/tr><tr><td>\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u5bfe\u5fdc<\/td><td>\u25cb<\/td><td>\u00d7<\/td><\/tr><tr><td>\u6642\u9593\u5358\u4f4d\u306e\u67d4\u8edf\u6027<\/td><td>\u25cb<\/td><td>\u00d7<\/td><\/tr><tr><td>C++11\u5fc5\u9808<\/td><td>\u25cb<\/td><td>\u00d7<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u5b9f\u969b\u306e\u7cbe\u5ea6\u6bd4\u8f03\u3092\u884c\u3046\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u30b3\u30fc\u30c9\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;chrono&gt;\n#include &lt;ctime&gt;\n#include &lt;iostream&gt;\n#include &lt;vector&gt;\n\nvoid compare_precision() {\n    const int ITERATIONS = 1000;\n    std::vector&lt;double&gt; chrono_times;\n    std::vector&lt;double&gt; clock_times;\n\n    \/\/ chrono\u8a08\u6e2c\n    for (int i = 0; i &lt; ITERATIONS; ++i) {\n        auto start = std::chrono::high_resolution_clock::now();\n        \/\/ \u6975\u5c0f\u306e\u51e6\u7406\n        int volatile x = 0;\n        for (int j = 0; j &lt; 1000; ++j) x += j;\n        auto end = std::chrono::high_resolution_clock::now();\n\n        auto duration = std::chrono::duration_cast&lt;std::chrono::nanoseconds&gt;\n            (end - start).count();\n        chrono_times.push_back(duration);\n    }\n\n    \/\/ clock\u8a08\u6e2c\n    for (int i = 0; i &lt; ITERATIONS; ++i) {\n        clock_t start = clock();\n        \/\/ \u540c\u3058\u6975\u5c0f\u306e\u51e6\u7406\n        int volatile x = 0;\n        for (int j = 0; j &lt; 1000; ++j) x += j;\n        clock_t end = clock();\n\n        double duration = 1000000000.0 * (end - start) \/ CLOCKS_PER_SEC; \/\/ \u30ca\u30ce\u79d2\u306b\u5909\u63db\n        clock_times.push_back(duration);\n    }\n\n    \/\/ \u7d50\u679c\u306e\u7d71\u8a08\u3092\u8a08\u7b97\n    auto calc_stats = [](const std::vector&lt;double&gt;&amp; times) {\n        double sum = 0.0;\n        double min_time = times[0];\n        double max_time = times[0];\n\n        for (double time : times) {\n            sum += time;\n            min_time = std::min(min_time, time);\n            max_time = std::max(max_time, time);\n        }\n\n        double avg = sum \/ times.size();\n        std::cout &lt;&lt; \"\u5e73\u5747: \" &lt;&lt; avg &lt;&lt; \"ns\\n\"\n                  &lt;&lt; \"\u6700\u5c0f: \" &lt;&lt; min_time &lt;&lt; \"ns\\n\"\n                  &lt;&lt; \"\u6700\u5927: \" &lt;&lt; max_time &lt;&lt; \"ns\\n\"\n                  &lt;&lt; \"\u5909\u52d5\u5e45: \" &lt;&lt; max_time - min_time &lt;&lt; \"ns\\n\\n\";\n    };\n\n    std::cout &lt;&lt; \"std::chrono\u8a08\u6e2c\u7d50\u679c:\\n\";\n    calc_stats(chrono_times);\n\n    std::cout &lt;&lt; \"clock()\u8a08\u6e2c\u7d50\u679c:\\n\";\n    calc_stats(clock_times);\n}<\/pre>\n\n\n\n<p>\u3053\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u7d50\u679c\u304b\u3089\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u4f7f\u3044\u5206\u3051\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>std::chrono\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9ad8\u7cbe\u5ea6\u306a\u6642\u9593\u8a08\u6e2c\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u74b0\u5883\u3067\u306e\u8a08\u6e2c<\/li>\n\n\n\n<li>\u7570\u306a\u308b\u6642\u9593\u5358\u4f4d\u3067\u306e\u67d4\u8edf\u306a\u8a08\u6e2c\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u73fe\u4ee3\u7684\u306aC++\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>time.h\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ec\u30ac\u30b7\u30fc\u30b3\u30fc\u30c9\u3068\u306e\u4e92\u63db\u6027\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u30df\u30ea\u79d2\u30ec\u30d9\u30eb\u306e\u7cbe\u5ea6\u3067\u5341\u5206\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u30b7\u30f3\u30d7\u30eb\u306a\u5b9f\u88c5\u304c\u512a\u5148\u3055\u308c\u308b\u5834\u5408<\/li>\n\n\n\n<li>C++11\u304c\u4f7f\u7528\u3067\u304d\u306a\u3044\u74b0\u5883\u306e\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<p>\u6700\u65b0\u306eC++\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u7279\u5225\u306a\u7406\u7531\u304c\u306a\u3044\u9650\u308a<code>std::chrono<\/code>\u306e\u4f7f\u7528\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u578b\u5b89\u5168\u6027\u3068\u9ad8\u7cbe\u5ea6\u306a\u8a08\u6e2c\u6a5f\u80fd\u306f\u3001\u73fe\u4ee3\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u91cd\u8981\u306a\u7279\u5fb4\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-7\">\u5b9f\u8df5\u7684\u306a\u6642\u9593\u8a08\u6e2c\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u30de\u30a4\u30af\u30ed\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306e\u5b9f\u88c5\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30de\u30a4\u30af\u30ed\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306f\u5c0f\u3055\u306a\u51e6\u7406\u5358\u4f4d\u306e\u6027\u80fd\u3092\u8a08\u6e2c\u3059\u308b\u624b\u6cd5\u3067\u3059\u3002\u6b63\u78ba\u306a\u5b9f\u88c5\u306b\u306f\u4ee5\u4e0b\u306e\u8981\u7d20\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;chrono&gt;\n#include &lt;vector&gt;\n#include &lt;algorithm&gt;\n#include &lt;numeric&gt;\n#include &lt;cmath&gt;\n\nclass MicroBenchmark {\npublic:\n    \/\/ \u30d9\u30f3\u30c1\u30de\u30fc\u30af\u5b9f\u884c\u7528\u306e\u30af\u30e9\u30b9\n    template&lt;typename Func&gt;\n    static std::vector&lt;double&gt; measure(Func&amp;&amp; func, size_t iterations = 1000) {\n        std::vector&lt;double&gt; measurements;\n        measurements.reserve(iterations);\n\n        \/\/ \u30d7\u30ed\u30bb\u30c3\u30b5\u3092\u30a6\u30a9\u30fc\u30e0\u30a2\u30c3\u30d7\n        for (size_t i = 0; i &lt; 100; ++i) {\n            func();\n        }\n\n        \/\/ \u5b9f\u969b\u306e\u6e2c\u5b9a\n        for (size_t i = 0; i &lt; iterations; ++i) {\n            auto start = std::chrono::high_resolution_clock::now();\n            func();\n            auto end = std::chrono::high_resolution_clock::now();\n\n            auto duration = std::chrono::duration_cast&lt;std::chrono::nanoseconds&gt;\n                (end - start).count();\n            measurements.push_back(static_cast&lt;double&gt;(duration));\n        }\n\n        return measurements;\n    }\n\n    \/\/ \u7d71\u8a08\u60c5\u5831\u306e\u8a08\u7b97\n    static void analyze_results(const std::vector&lt;double&gt;&amp; measurements) {\n        if (measurements.empty()) return;\n\n        double sum = std::accumulate(measurements.begin(), measurements.end(), 0.0);\n        double mean = sum \/ measurements.size();\n\n        \/\/ \u6a19\u6e96\u504f\u5dee\u306e\u8a08\u7b97\n        double sq_sum = std::inner_product(\n            measurements.begin(), measurements.end(),\n            measurements.begin(), 0.0,\n            std::plus&lt;&gt;(),\n            [](double a, double b) { return (a - mean) * (b - mean); }\n        );\n        double std_dev = std::sqrt(sq_sum \/ measurements.size());\n\n        \/\/ \u5916\u308c\u5024\u306e\u9664\u53bb\uff08\u5e73\u5747\u00b12\u6a19\u6e96\u504f\u5dee\u306e\u7bc4\u56f2\u5916\uff09\n        std::vector&lt;double&gt; filtered;\n        std::copy_if(measurements.begin(), measurements.end(), \n            std::back_inserter(filtered),\n            [mean, std_dev](double x) {\n                return std::abs(x - mean) &lt;= 2 * std_dev;\n            });\n\n        \/\/ \u4fee\u6b63\u3055\u308c\u305f\u7d71\u8a08\u5024\u3092\u8a08\u7b97\n        double filtered_mean = std::accumulate(filtered.begin(), \n            filtered.end(), 0.0) \/ filtered.size();\n\n        std::cout &lt;&lt; \"\u6e2c\u5b9a\u56de\u6570: \" &lt;&lt; measurements.size() &lt;&lt; \"\\n\"\n                  &lt;&lt; \"\u5e73\u5747\u5b9f\u884c\u6642\u9593: \" &lt;&lt; mean &lt;&lt; \" ns\\n\"\n                  &lt;&lt; \"\u6a19\u6e96\u504f\u5dee: \" &lt;&lt; std_dev &lt;&lt; \" ns\\n\"\n                  &lt;&lt; \"\u5916\u308c\u5024\u9664\u53bb\u5f8c\u306e\u5e73\u5747: \" &lt;&lt; filtered_mean &lt;&lt; \" ns\\n\";\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u8a08\u6e2c\u7d50\u679c\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u5916\u90e8\u8981\u56e0\u306e\u5236\u5fa1<\/h3>\n\n\n\n<p>\u8a08\u6e2c\u306e\u7cbe\u5ea6\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u5916\u90e8\u8981\u56e0\u3092\u5236\u5fa1\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class BenchmarkEnvironment {\npublic:\n    BenchmarkEnvironment() {\n        \/\/ \u30b9\u30ec\u30c3\u30c9\u306e\u512a\u5148\u5ea6\u3092\u4e0a\u3052\u308b\n        #ifdef _WIN32\n        SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_HIGHEST);\n        #else\n        \/\/ POSIX \u30b7\u30b9\u30c6\u30e0\u3067\u306e\u512a\u5148\u5ea6\u8a2d\u5b9a\n        struct sched_param param;\n        param.sched_priority = sched_get_priority_max(SCHED_FIFO);\n        pthread_setschedparam(pthread_self(), SCHED_FIFO, &amp;param);\n        #endif\n\n        \/\/ CPU\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u306e\u8a2d\u5b9a\n        set_cpu_affinity();\n    }\n\nprivate:\n    void set_cpu_affinity() {\n        #ifdef _WIN32\n        \/\/ \u7279\u5b9a\u306eCPU\u30b3\u30a2\u306b\u56fa\u5b9a\n        SetThreadAffinityMask(GetCurrentThread(), 1);\n        #else\n        cpu_set_t cpuset;\n        CPU_ZERO(&amp;cpuset);\n        CPU_SET(0, &amp;cpuset);\n        pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &amp;cpuset);\n        #endif\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u7d71\u8a08\u7684\u306b\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u8a08\u6e2c\u3092\u884c\u3046\u305f\u3081\u306e\u30b3\u30c4<\/h3>\n\n\n\n<p>\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u8a08\u6e2c\u7d50\u679c\u3092\u5f97\u308b\u305f\u3081\u306e\u5b9f\u8df5\u7684\u306a\u624b\u6cd5\u3092\u5b9f\u88c5\u3057\u305f\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u95a2\u6570\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">template&lt;typename Func&gt;\nclass StatisticalBenchmark {\npublic:\n    StatisticalBenchmark(Func&amp;&amp; func, size_t sample_size = 1000, \n                        size_t warmup_runs = 100)\n        : func_(std::forward&lt;Func&gt;(func))\n        , sample_size_(sample_size)\n        , warmup_runs_(warmup_runs) {}\n\n    void run() {\n        \/\/ \u74b0\u5883\u8a2d\u5b9a\n        BenchmarkEnvironment env;\n\n        \/\/ \u30a6\u30a9\u30fc\u30e0\u30a2\u30c3\u30d7\u5b9f\u884c\n        for (size_t i = 0; i &lt; warmup_runs_; ++i) {\n            func_();\n        }\n\n        \/\/ \u30e1\u30a4\u30f3\u6e2c\u5b9a\n        std::vector&lt;double&gt; measurements = MicroBenchmark::measure(func_, sample_size_);\n\n        \/\/ \u7d50\u679c\u306e\u7d71\u8a08\u5206\u6790\n        analyze_detailed_results(measurements);\n    }\n\nprivate:\n    void analyze_detailed_results(const std::vector&lt;double&gt;&amp; measurements) {\n        \/\/ \u57fa\u672c\u7d71\u8a08\u91cf\u306e\u8a08\u7b97\n        auto [min, max] = std::minmax_element(measurements.begin(), \n            measurements.end());\n\n        std::vector&lt;double&gt; sorted = measurements;\n        std::sort(sorted.begin(), sorted.end());\n\n        \/\/ \u30d1\u30fc\u30bb\u30f3\u30bf\u30a4\u30eb\u306e\u8a08\u7b97\n        size_t p50_idx = sample_size_ * 0.50;\n        size_t p95_idx = sample_size_ * 0.95;\n        size_t p99_idx = sample_size_ * 0.99;\n\n        std::cout &lt;&lt; \"\u8a73\u7d30\u306a\u7d71\u8a08\u60c5\u5831:\\n\"\n                  &lt;&lt; \"\u6700\u5c0f\u5024: \" &lt;&lt; *min &lt;&lt; \" ns\\n\"\n                  &lt;&lt; \"\u6700\u5927\u5024: \" &lt;&lt; *max &lt;&lt; \" ns\\n\"\n                  &lt;&lt; \"\u4e2d\u592e\u5024 (P50): \" &lt;&lt; sorted[p50_idx] &lt;&lt; \" ns\\n\"\n                  &lt;&lt; \"95\u30d1\u30fc\u30bb\u30f3\u30bf\u30a4\u30eb: \" &lt;&lt; sorted[p95_idx] &lt;&lt; \" ns\\n\"\n                  &lt;&lt; \"99\u30d1\u30fc\u30bb\u30f3\u30bf\u30a4\u30eb: \" &lt;&lt; sorted[p99_idx] &lt;&lt; \" ns\\n\";\n\n        \/\/ \u5909\u52d5\u4fc2\u6570\u306e\u8a08\u7b97\n        double mean = std::accumulate(measurements.begin(), \n            measurements.end(), 0.0) \/ sample_size_;\n        double variance = std::accumulate(measurements.begin(), \n            measurements.end(), 0.0,\n            [mean](double acc, double x) {\n                return acc + (x - mean) * (x - mean);\n            }) \/ sample_size_;\n        double cv = std::sqrt(variance) \/ mean;\n\n        std::cout &lt;&lt; \"\u5909\u52d5\u4fc2\u6570: \" &lt;&lt; cv &lt;&lt; \"\\n\"\n                  &lt;&lt; \"\uff080.1\u672a\u6e80\u3067\u3042\u308c\u3070\u6e2c\u5b9a\u306e\u4fe1\u983c\u6027\u306f\u9ad8\u3044\uff09\\n\";\n    }\n\n    Func func_;\n    size_t sample_size_;\n    size_t warmup_runs_;\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid benchmark_example() {\n    auto test_func = []() {\n        \/\/ \u8a08\u6e2c\u5bfe\u8c61\u306e\u51e6\u7406\n        volatile int sum = 0;\n        for (int i = 0; i &lt; 1000; ++i) {\n            sum += i;\n        }\n    };\n\n    StatisticalBenchmark benchmark(test_func);\n    benchmark.run();\n}<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6642\u9593\u8a08\u6e2c\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u7279\u306b\u4ee5\u4e0b\u306e\u70b9\u306b\u6ce8\u610f\u3092\u6255\u3046\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30a6\u30a9\u30fc\u30e0\u30a2\u30c3\u30d7\u5b9f\u884c\u306b\u3088\u308b\u521d\u671f\u5316\u30b3\u30b9\u30c8\u306e\u6392\u9664<\/li>\n\n\n\n<li>\u5916\u90e8\u8981\u56e0\uff08CPU\u512a\u5148\u5ea6\u3001\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\uff09\u306e\u5236\u5fa1<\/li>\n\n\n\n<li>\u7d71\u8a08\u7684\u306a\u5916\u308c\u5024\u306e\u51e6\u7406<\/li>\n\n\n\n<li>\u8907\u6570\u56de\u306e\u6e2c\u5b9a\u3068\u9069\u5207\u306a\u7d71\u8a08\u6307\u6a19\u306e\u4f7f\u7528<\/li>\n<\/ol>\n\n\n\n<p>\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u9069\u5207\u306b\u9078\u629e\u3057\u3001\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u6b63\u78ba\u306a\u6027\u80fd\u6e2c\u5b9a\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-11\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u305f\u3081\u306e\u8a08\u6e2c\u6226\u7565<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u7279\u5b9a\u306e\u305f\u3081\u306e\u52b9\u679c\u7684\u306a\u8a08\u6e2c\u624b\u6cd5<\/h3>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u7b2c\u4e00\u6b69\u306f\u3001\u5b9f\u884c\u6642\u9593\u306e\u5927\u90e8\u5206\u3092\u5360\u3081\u308b\u300c\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u300d\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u52b9\u679c\u7684\u306a\u8a08\u6e2c\u624b\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;chrono&gt;\n#include &lt;string&gt;\n#include &lt;unordered_map&gt;\n#include &lt;memory&gt;\n#include &lt;mutex&gt;\n\n\/\/ \u95a2\u6570\u30ec\u30d9\u30eb\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u3092\u884c\u3046\u30af\u30e9\u30b9\nclass FunctionProfiler {\npublic:\n    struct ProfileData {\n        std::chrono::nanoseconds total_time{0};\n        size_t call_count{0};\n        std::chrono::nanoseconds min_time{std::chrono::nanoseconds::max()};\n        std::chrono::nanoseconds max_time{std::chrono::nanoseconds::min()};\n    };\n\nprivate:\n    static std::unordered_map&lt;std::string, ProfileData&gt;&amp; get_profile_data() {\n        static std::unordered_map&lt;std::string, ProfileData&gt; profile_data;\n        return profile_data;\n    }\n\n    static std::mutex&amp; get_mutex() {\n        static std::mutex mutex;\n        return mutex;\n    }\n\npublic:\n    \/\/ RAII\u65b9\u5f0f\u3067\u95a2\u6570\u306e\u5b9f\u884c\u6642\u9593\u3092\u8a08\u6e2c\n    class ScopedProfiler {\n    public:\n        ScopedProfiler(const std::string&amp; func_name) \n            : func_name_(func_name), start_(std::chrono::high_resolution_clock::now()) {}\n\n        ~ScopedProfiler() {\n            auto end = std::chrono::high_resolution_clock::now();\n            auto duration = std::chrono::duration_cast&lt;std::chrono::nanoseconds&gt;(end - start_);\n\n            std::lock_guard&lt;std::mutex&gt; lock(FunctionProfiler::get_mutex());\n            auto&amp; data = FunctionProfiler::get_profile_data()[func_name_];\n            data.total_time += duration;\n            data.call_count++;\n            data.min_time = std::min(data.min_time, duration);\n            data.max_time = std::max(data.max_time, duration);\n        }\n\n    private:\n        std::string func_name_;\n        std::chrono::high_resolution_clock::time_point start_;\n    };\n\n    \/\/ \u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u7d50\u679c\u306e\u51fa\u529b\n    static void print_report() {\n        std::lock_guard&lt;std::mutex&gt; lock(get_mutex());\n        std::cout &lt;&lt; \"\\nFunction Profiling Report:\\n\";\n        std::cout &lt;&lt; std::string(50, '-') &lt;&lt; '\\n';\n        std::cout &lt;&lt; std::left &lt;&lt; std::setw(20) &lt;&lt; \"Function\"\n                  &lt;&lt; std::right &lt;&lt; std::setw(10) &lt;&lt; \"Calls\"\n                  &lt;&lt; std::setw(15) &lt;&lt; \"Total(ms)\"\n                  &lt;&lt; std::setw(15) &lt;&lt; \"Avg(ms)\"\n                  &lt;&lt; std::setw(15) &lt;&lt; \"Min(ms)\"\n                  &lt;&lt; std::setw(15) &lt;&lt; \"Max(ms)\\n\";\n        std::cout &lt;&lt; std::string(90, '-') &lt;&lt; '\\n';\n\n        for (const auto&amp; [func_name, data] : get_profile_data()) {\n            double total_ms = data.total_time.count() \/ 1e6;\n            double avg_ms = total_ms \/ data.call_count;\n            double min_ms = data.min_time.count() \/ 1e6;\n            double max_ms = data.max_time.count() \/ 1e6;\n\n            std::cout &lt;&lt; std::left &lt;&lt; std::setw(20) &lt;&lt; func_name\n                      &lt;&lt; std::right &lt;&lt; std::setw(10) &lt;&lt; data.call_count\n                      &lt;&lt; std::fixed &lt;&lt; std::setprecision(3)\n                      &lt;&lt; std::setw(15) &lt;&lt; total_ms\n                      &lt;&lt; std::setw(15) &lt;&lt; avg_ms\n                      &lt;&lt; std::setw(15) &lt;&lt; min_ms\n                      &lt;&lt; std::setw(15) &lt;&lt; max_ms &lt;&lt; '\\n';\n        }\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid example_function() {\n    FunctionProfiler::ScopedProfiler profiler(__func__);\n    \/\/ \u95a2\u6570\u306e\u51e6\u7406\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u7d99\u7d9a\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306e\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u9577\u671f\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u76e3\u8996\u306e\u305f\u3081\u306e\u5b9f\u88c5\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class PerformanceMonitor {\npublic:\n    \/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30e1\u30c8\u30ea\u30af\u30b9\u306e\u5b9a\u7fa9\n    struct Metrics {\n        double response_time;\n        double throughput;\n        double error_rate;\n        std::chrono::system_clock::time_point timestamp;\n    };\n\n    \/\/ \u30e1\u30c8\u30ea\u30af\u30b9\u306e\u8a18\u9332\n    void record_metrics(const std::string&amp; component_name, const Metrics&amp; metrics) {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex_);\n        auto&amp; history = metrics_history_[component_name];\n        history.push_back(metrics);\n\n        \/\/ \u5c65\u6b74\u30b5\u30a4\u30ba\u306e\u5236\u9650\n        if (history.size() &gt; max_history_size_) {\n            history.pop_front();\n        }\n\n        \/\/ \u6027\u80fd\u52a3\u5316\u306e\u691c\u51fa\n        detect_performance_regression(component_name);\n    }\n\n    \/\/ \u6027\u80fd\u52a3\u5316\u306e\u691c\u51fa\n    void detect_performance_regression(const std::string&amp; component_name) {\n        const auto&amp; history = metrics_history_[component_name];\n        if (history.size() &lt; min_samples_for_analysis_) return;\n\n        \/\/ \u79fb\u52d5\u5e73\u5747\u306e\u8a08\u7b97\n        double current_avg = calculate_moving_average(history, 10);\n        double baseline_avg = calculate_baseline_average(history);\n\n        \/\/ \u8b66\u544a\u95be\u5024\u306e\u78ba\u8a8d\n        if (current_avg &gt; baseline_avg * (1 + warning_threshold_)) {\n            std::cout &lt;&lt; \"Warning: Performance regression detected in \"\n                      &lt;&lt; component_name &lt;&lt; \"\\n\";\n            std::cout &lt;&lt; \"Current average: \" &lt;&lt; current_avg \n                      &lt;&lt; \"ms (Baseline: \" &lt;&lt; baseline_avg &lt;&lt; \"ms)\\n\";\n        }\n    }\n\nprivate:\n    std::unordered_map&lt;std::string, std::deque&lt;Metrics&gt;&gt; metrics_history_;\n    std::mutex mutex_;\n    const size_t max_history_size_ = 1000;\n    const size_t min_samples_for_analysis_ = 30;\n    const double warning_threshold_ = 0.2; \/\/ 20%\u306e\u6027\u80fd\u52a3\u5316\u3067\u8b66\u544a\n\n    double calculate_moving_average(const std::deque&lt;Metrics&gt;&amp; history, \n                                  size_t window_size) {\n        \/\/ \u5b9f\u88c5\u7701\u7565\n        return 0.0;\n    }\n\n    double calculate_baseline_average(const std::deque&lt;Metrics&gt;&amp; history) {\n        \/\/ \u5b9f\u88c5\u7701\u7565\n        return 0.0;\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6700\u9069\u5316\u6226\u7565\u3092\u5b9f\u65bd\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u306e\u7279\u5b9a\u3068\u5206\u6790<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9f\u884c\u6642\u9593\u306e\u5927\u90e8\u5206\u3092\u5360\u3081\u308b\u95a2\u6570\u306e\u7279\u5b9a<\/li>\n\n\n\n<li>\u547c\u3073\u51fa\u3057\u983b\u5ea6\u306e\u9ad8\u3044\u95a2\u6570\u306e\u628a\u63e1<\/li>\n\n\n\n<li>\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3068\u306a\u308b\u51e6\u7406\u306e\u767a\u898b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u7d99\u7d9a\u7684\u306a\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306b\u3088\u308b\u65e9\u671f\u554f\u984c\u767a\u898b<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u52a3\u5316\u306e\u65e9\u671f\u691c\u51fa<\/li>\n\n\n\n<li>\u30c8\u30ec\u30f3\u30c9\u5206\u6790\u306b\u3088\u308b\u5c06\u6765\u7684\u306a\u554f\u984c\u306e\u4e88\u6e2c<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u306e\u5909\u66f4\u304c\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u4e0e\u3048\u308b\u5f71\u97ff\u306e\u8ffd\u8de1<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c7\u30fc\u30bf\u306b\u57fa\u3065\u304f\u6700\u9069\u5316\u306e\u512a\u5148\u9806\u4f4d\u4ed8\u3051<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6700\u3082\u52b9\u679c\u306e\u9ad8\u3044\u6700\u9069\u5316\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u9078\u5b9a<\/li>\n\n\n\n<li>\u30ea\u30bd\u30fc\u30b9\u6295\u8cc7\u306e\u52b9\u7387\u7684\u306a\u914d\u5206<\/li>\n\n\n\n<li>\u6700\u9069\u5316\u306e\u52b9\u679c\u6e2c\u5b9a\u3068\u691c\u8a3c<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6226\u7565\u3092\u52b9\u679c\u7684\u306b\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u8a08\u6e2c\u3068\u5206\u6790\u3092\u7d99\u7d9a\u7684\u306b\u884c\u3044\u3001\u5f97\u3089\u308c\u305f\u30c7\u30fc\u30bf\u306b\u57fa\u3065\u3044\u3066\u610f\u601d\u6c7a\u5b9a\u3092\u884c\u3046\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-14\">\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b\u3068\u89e3\u8aac<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">\u7c21\u5358\u306a\u95a2\u6570\u306e\u5b9f\u884c\u6642\u9593\u8a08\u6e2c<\/h3>\n\n\n\n<p>\u307e\u305a\u306f\u3001\u57fa\u672c\u7684\u306a\u95a2\u6570\u306e\u5b9f\u884c\u6642\u9593\u8a08\u6e2c\u304b\u3089\u59cb\u3081\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306b\u3001\u518d\u5229\u7528\u53ef\u80fd\u306a\u8a08\u6e2c\u7528\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30af\u30e9\u30b9\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;chrono&gt;\n#include &lt;functional&gt;\n#include &lt;iostream&gt;\n#include &lt;string&gt;\n#include &lt;type_traits&gt;\n\ntemplate&lt;typename TimeUnit = std::chrono::microseconds&gt;\nclass ExecutionTimer {\npublic:\n    template&lt;typename F, typename... Args&gt;\n    static auto measure(const std::string&amp; operation_name, F&amp;&amp; func, Args&amp;&amp;... args) {\n        \/\/ \u8a08\u6e2c\u958b\u59cb\n        auto start = std::chrono::high_resolution_clock::now();\n\n        if constexpr (std::is_same_v&lt;std::invoke_result_t&lt;F, Args...&gt;, void&gt;) {\n            \/\/ \u623b\u308a\u5024\u304cvoid\u306e\u5834\u5408\n            std::forward&lt;F&gt;(func)(std::forward&lt;Args&gt;(args)...);\n            auto end = std::chrono::high_resolution_clock::now();\n            auto duration = std::chrono::duration_cast&lt;TimeUnit&gt;(end - start);\n\n            std::cout &lt;&lt; operation_name &lt;&lt; \"\u306e\u5b9f\u884c\u6642\u9593: \" \n                      &lt;&lt; duration.count() &lt;&lt; get_unit_suffix() &lt;&lt; \"\\n\";\n        } else {\n            \/\/ \u623b\u308a\u5024\u304c\u3042\u308b\u5834\u5408\n            auto result = std::forward&lt;F&gt;(func)(std::forward&lt;Args&gt;(args)...);\n            auto end = std::chrono::high_resolution_clock::now();\n            auto duration = std::chrono::duration_cast&lt;TimeUnit&gt;(end - start);\n\n            std::cout &lt;&lt; operation_name &lt;&lt; \"\u306e\u5b9f\u884c\u6642\u9593: \" \n                      &lt;&lt; duration.count() &lt;&lt; get_unit_suffix() &lt;&lt; \"\\n\";\n            return result;\n        }\n    }\n\nprivate:\n    static std::string get_unit_suffix() {\n        if (std::is_same_v&lt;TimeUnit, std::chrono::nanoseconds&gt;) return \"ns\";\n        if (std::is_same_v&lt;TimeUnit, std::chrono::microseconds&gt;) return \"\u00b5s\";\n        if (std::is_same_v&lt;TimeUnit, std::chrono::milliseconds&gt;) return \"ms\";\n        if (std::is_same_v&lt;TimeUnit, std::chrono::seconds&gt;) return \"s\";\n        return \"\";\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid example_usage() {\n    \/\/ \u30e9\u30e0\u30c0\u5f0f\u306b\u3088\u308b\u7c21\u5358\u306a\u51e6\u7406\u306e\u8a08\u6e2c\n    ExecutionTimer&lt;&gt;::measure(\"\u5358\u7d14\u306a\u30eb\u30fc\u30d7\", []() {\n        volatile int sum = 0;\n        for (int i = 0; i &lt; 1000000; ++i) sum += i;\n    });\n\n    \/\/ \u623b\u308a\u5024\u306e\u3042\u308b\u95a2\u6570\u306e\u8a08\u6e2c\n    auto result = ExecutionTimer&lt;std::chrono::nanoseconds&gt;::measure(\n        \"\u5024\u3092\u8fd4\u3059\u51e6\u7406\",\n        [](int x) { return x * x; },\n        42\n    );\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u8907\u96d1\u306a\u51e6\u7406\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8a08\u6e2c<\/h3>\n\n\n\n<p>\u3088\u308a\u8907\u96d1\u306a\u51e6\u7406\u306e\u8a08\u6e2c\u306b\u306f\u3001\u968e\u5c64\u7684\u306a\u8a08\u6e2c\u6a5f\u80fd\u3092\u6301\u3064\u30d7\u30ed\u30d5\u30a1\u30a4\u30e9\u30fc\u304c\u6709\u7528\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class HierarchicalProfiler {\npublic:\n    class ScopedMeasurement {\n    public:\n        ScopedMeasurement(const std::string&amp; name, int depth = 0)\n            : name_(name), depth_(depth), start_(std::chrono::high_resolution_clock::now()) {\n            print_indent();\n            std::cout &lt;&lt; \"\u958b\u59cb: \" &lt;&lt; name_ &lt;&lt; \"\\n\";\n        }\n\n        ~ScopedMeasurement() {\n            auto end = std::chrono::high_resolution_clock::now();\n            auto duration = std::chrono::duration_cast&lt;std::chrono::microseconds&gt;(\n                end - start_).count();\n            print_indent();\n            std::cout &lt;&lt; \"\u7d42\u4e86: \" &lt;&lt; name_ &lt;&lt; \" (\" &lt;&lt; duration &lt;&lt; \"\u00b5s)\\n\";\n        }\n\n    private:\n        void print_indent() const {\n            std::cout &lt;&lt; std::string(depth_ * 2, ' ');\n        }\n\n        std::string name_;\n        int depth_;\n        std::chrono::high_resolution_clock::time_point start_;\n    };\n\n    \/\/ \u30b9\u30b3\u30fc\u30d7\u30d9\u30fc\u30b9\u306e\u8a08\u6e2c\u3092\u958b\u59cb\n    static ScopedMeasurement measure(const std::string&amp; name) {\n        return ScopedMeasurement(name, current_depth_++);\n    }\n\n    \/\/ \u73fe\u5728\u306e\u968e\u5c64\u306e\u6df1\u3055\n    static inline int current_depth_ = 0;\n};\n\n\/\/ \u8907\u96d1\u306a\u51e6\u7406\u306e\u8a08\u6e2c\u4f8b\nvoid complex_process() {\n    auto main_scope = HierarchicalProfiler::measure(\"complex_process\");\n\n    {\n        auto sub_scope1 = HierarchicalProfiler::measure(\"\u30c7\u30fc\u30bf\u521d\u671f\u5316\");\n        std::vector&lt;int&gt; data(1000000);\n        std::iota(data.begin(), data.end(), 0);\n    }\n\n    {\n        auto sub_scope2 = HierarchicalProfiler::measure(\"\u30c7\u30fc\u30bf\u51e6\u7406\");\n        \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u74b0\u5883\u3067\u306e\u6b63\u78ba\u306a\u6642\u9593\u8a08\u6e2c<\/h3>\n\n\n\n<p>\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u74b0\u5883\u3067\u306e\u8a08\u6e2c\u306b\u306f\u7279\u5225\u306a\u8003\u616e\u304c\u5fc5\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;thread&gt;\n#include &lt;vector&gt;\n#include &lt;future&gt;\n\nclass ThreadSafeTimer {\npublic:\n    \/\/ \u30b9\u30ec\u30c3\u30c9\u5225\u306e\u5b9f\u884c\u6642\u9593\u3092\u8a18\u9332\n    void record_thread_time(const std::string&amp; operation, \n                          std::chrono::nanoseconds duration) {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex_);\n        auto thread_id = std::this_thread::get_id();\n        thread_times_[thread_id][operation].push_back(duration);\n    }\n\n    \/\/ \u96c6\u8a08\u7d50\u679c\u306e\u51fa\u529b\n    void print_statistics() {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex_);\n        std::cout &lt;&lt; \"\\n\u30b9\u30ec\u30c3\u30c9\u5225\u5b9f\u884c\u6642\u9593\u7d71\u8a08:\\n\";\n\n        for (const auto&amp; [thread_id, operations] : thread_times_) {\n            std::cout &lt;&lt; \"Thread \" &lt;&lt; thread_id &lt;&lt; \":\\n\";\n\n            for (const auto&amp; [op_name, times] : operations) {\n                auto total = std::accumulate(times.begin(), times.end(),\n                    std::chrono::nanoseconds(0));\n                auto avg = total \/ times.size();\n\n                std::cout &lt;&lt; \"  \" &lt;&lt; op_name &lt;&lt; \":\\n\"\n                          &lt;&lt; \"    \u5e73\u5747\u5b9f\u884c\u6642\u9593: \" \n                          &lt;&lt; std::chrono::duration_cast&lt;std::chrono::microseconds&gt;(avg).count()\n                          &lt;&lt; \"\u00b5s\\n\"\n                          &lt;&lt; \"    \u5b9f\u884c\u56de\u6570: \" &lt;&lt; times.size() &lt;&lt; \"\\n\";\n            }\n        }\n    }\n\nprivate:\n    std::mutex mutex_;\n    std::unordered_map&lt;\n        std::thread::id,\n        std::unordered_map&lt;\n            std::string,\n            std::vector&lt;std::chrono::nanoseconds&gt;\n        &gt;\n    &gt; thread_times_;\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid parallel_processing_example() {\n    ThreadSafeTimer timer;\n    std::vector&lt;std::future&lt;void&gt;&gt; futures;\n\n    \/\/ \u8907\u6570\u30b9\u30ec\u30c3\u30c9\u3067\u51e6\u7406\u3092\u5b9f\u884c\n    for (int i = 0; i &lt; 4; ++i) {\n        futures.push_back(std::async(std::launch::async, [&amp;timer]() {\n            for (int j = 0; j &lt; 100; ++j) {\n                auto start = std::chrono::high_resolution_clock::now();\n\n                \/\/ \u8a08\u6e2c\u5bfe\u8c61\u306e\u51e6\u7406\n                std::this_thread::sleep_for(std::chrono::milliseconds(1));\n\n                auto end = std::chrono::high_resolution_clock::now();\n                timer.record_thread_time(\"\u51e6\u7406\" + std::to_string(j),\n                    end - start);\n            }\n        }));\n    }\n\n    \/\/ \u5168\u30b9\u30ec\u30c3\u30c9\u306e\u5b8c\u4e86\u3092\u5f85\u6a5f\n    for (auto&amp; f : futures) {\n        f.wait();\n    }\n\n    \/\/ \u7d50\u679c\u306e\u51fa\u529b\n    timer.print_statistics();\n}<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30b3\u30fc\u30c9\u4f8b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7279\u5fb4\u3092\u6301\u3063\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u518d\u5229\u7528\u6027<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u305f\u6c4e\u7528\u7684\u306a\u5b9f\u88c5<\/li>\n\n\n\n<li>\u69d8\u3005\u306a\u6642\u9593\u5358\u4f4d\u306b\u5bfe\u5fdc<\/li>\n\n\n\n<li>\u7570\u306a\u308b\u623b\u308a\u5024\u306e\u578b\u306b\u5bfe\u5fdc<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4f7f\u3044\u3084\u3059\u3055<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>RAII\u30d1\u30bf\u30fc\u30f3\u306b\u3088\u308b\u81ea\u52d5\u7684\u306a\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406<\/li>\n\n\n\n<li>\u76f4\u611f\u7684\u306aAPI\u8a2d\u8a08<\/li>\n\n\n\n<li>\u8a73\u7d30\u306a\u7d50\u679c\u51fa\u529b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5805\u7262\u6027<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306a\u5b9f\u88c5<\/li>\n\n\n\n<li>\u4f8b\u5916\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/li>\n\n\n\n<li>\u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\u3078\u306e\u5bfe\u5fdc<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30b3\u30fc\u30c9\u306f\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3050\u306b\u4f7f\u7528\u3067\u304d\u308b\u5f62\u3067\u5b9f\u88c5\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u8981\u4ef6\u306b\u5408\u308f\u305b\u3066\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-18\">\u3088\u304f\u3042\u308b\u30c8\u30e9\u30d6\u30eb\u3068\u89e3\u6c7a\u7b56<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">\u8a08\u6e2c\u7d50\u679c\u306e\u3070\u3089\u3064\u304d\u3078\u306e\u5bfe\u51e6\u6cd5<\/h3>\n\n\n\n<p>\u8a08\u6e2c\u7d50\u679c\u306e\u3070\u3089\u3064\u304d\u306f\u3001\u6642\u9593\u8a08\u6e2c\u306b\u304a\u3044\u3066\u6700\u3082\u4e00\u822c\u7684\u306a\u554f\u984c\u306e\u4e00\u3064\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u3053\u306e\u554f\u984c\u306b\u5bfe\u3059\u308b\u52b9\u679c\u7684\u306a\u5bfe\u51e6\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class RobustMeasurement {\npublic:\n    \/\/ \u3070\u3089\u3064\u304d\u3092\u8003\u616e\u3057\u305f\u8a08\u6e2c\u3092\u884c\u3046\u30af\u30e9\u30b9\n    template&lt;typename F&gt;\n    static auto measure_with_stability(F&amp;&amp; func, size_t iterations = 100) {\n        std::vector&lt;double&gt; measurements;\n        measurements.reserve(iterations);\n\n        \/\/ CPU\u5468\u6ce2\u6570\u3092\u5b89\u5b9a\u3055\u305b\u308b\u305f\u3081\u306e\u30a6\u30a9\u30fc\u30e0\u30a2\u30c3\u30d7\n        for (size_t i = 0; i &lt; 10; ++i) {\n            func();\n        }\n\n        \/\/ \u672c\u8a08\u6e2c\n        for (size_t i = 0; i &lt; iterations; ++i) {\n            auto start = std::chrono::high_resolution_clock::now();\n            func();\n            auto end = std::chrono::high_resolution_clock::now();\n\n            auto duration = std::chrono::duration_cast&lt;std::chrono::nanoseconds&gt;\n                (end - start).count();\n            measurements.push_back(duration);\n        }\n\n        \/\/ \u5916\u308c\u5024\u306e\u9664\u53bb\uff08\u56db\u5206\u4f4d\u7bc4\u56f2\u6cd5\uff09\n        std::sort(measurements.begin(), measurements.end());\n        size_t q1_idx = iterations \/ 4;\n        size_t q3_idx = iterations * 3 \/ 4;\n        double iqr = measurements[q3_idx] - measurements[q1_idx];\n        double lower_bound = measurements[q1_idx] - 1.5 * iqr;\n        double upper_bound = measurements[q3_idx] + 1.5 * iqr;\n\n        std::vector&lt;double&gt; filtered;\n        std::copy_if(measurements.begin(), measurements.end(), \n            std::back_inserter(filtered),\n            [&amp;](double x) { \n                return x &gt;= lower_bound &amp;&amp; x &lt;= upper_bound; \n            });\n\n        \/\/ \u7d71\u8a08\u60c5\u5831\u306e\u8a08\u7b97\u3068\u8868\u793a\n        double mean = std::accumulate(filtered.begin(), filtered.end(), 0.0) \n            \/ filtered.size();\n        double variance = std::accumulate(filtered.begin(), filtered.end(), 0.0,\n            [mean](double acc, double x) {\n                return acc + (x - mean) * (x - mean);\n            }) \/ filtered.size();\n        double std_dev = std::sqrt(variance);\n\n        std::cout &lt;&lt; \"\u8a08\u6e2c\u7d50\u679c:\\n\"\n                  &lt;&lt; \"  \u5e73\u5747\u5024: \" &lt;&lt; mean &lt;&lt; \"ns\\n\"\n                  &lt;&lt; \"  \u6a19\u6e96\u504f\u5dee: \" &lt;&lt; std_dev &lt;&lt; \"ns\\n\"\n                  &lt;&lt; \"  \u5909\u52d5\u4fc2\u6570: \" &lt;&lt; (std_dev \/ mean) * 100 &lt;&lt; \"%\\n\";\n\n        return mean;\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u6700\u9069\u5316\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u8a08\u6e2c\u306b\u4e0e\u3048\u308b\u5f71\u97ff<\/h3>\n\n\n\n<p>\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u306f\u8a08\u6e2c\u7d50\u679c\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001\u6700\u9069\u5316\u306e\u5f71\u97ff\u3092\u5236\u5fa1\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class OptimizationAwareTimer {\npublic:\n    template&lt;typename F&gt;\n    static void measure_with_optimization_control(F&amp;&amp; func) {\n        \/\/ \u6700\u9069\u5316\u3092\u9632\u3050\u305f\u3081\u306e\u5909\u6570\n        volatile int prevent_optimization = 0;\n\n        \/\/ \u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u7528\u3057\u3066\u6700\u9069\u5316\u3092\u5236\u9650\n        using func_type = decltype(func);\n        func_type* func_ptr = &amp;func;\n\n        auto measurement = [&amp;]() {\n            auto start = std::chrono::high_resolution_clock::now();\n            (*func_ptr)();  \/\/ \u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u7d4c\u7531\u3067\u547c\u3073\u51fa\u3057\n            auto end = std::chrono::high_resolution_clock::now();\n\n            prevent_optimization++;  \/\/ \u6700\u9069\u5316\u9632\u6b62\n            return std::chrono::duration_cast&lt;std::chrono::nanoseconds&gt;\n                (end - start).count();\n        };\n\n        \/\/ \u8907\u6570\u56de\u306e\u6e2c\u5b9a\n        std::vector&lt;double&gt; times;\n        for (int i = 0; i &lt; 100; ++i) {\n            times.push_back(measurement());\n        }\n\n        \/\/ \u7d50\u679c\u306e\u5206\u6790\u3068\u8868\u793a\n        analyze_results(times);\n    }\n\nprivate:\n    static void analyze_results(const std::vector&lt;double&gt;&amp; times) {\n        \/\/ \u5b9f\u88c5\u7701\u7565\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-21\">\u30c7\u30d0\u30c3\u30b0\u30d3\u30eb\u30c9\u3068\u5b9f\u884c\u74b0\u5883\u3067\u306e\u9055\u3044<\/h3>\n\n\n\n<p>\u30c7\u30d0\u30c3\u30b0\u30d3\u30eb\u30c9\u3068\u30ea\u30ea\u30fc\u30b9\u30d3\u30eb\u30c9\u3067\u306e\u8a08\u6e2c\u7d50\u679c\u306e\u9055\u3044\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class BuildAwareProfiler {\npublic:\n    struct ProfileResult {\n        double debug_time;\n        double release_time;\n        double ratio;  \/\/ release\/debug\u6bd4\n    };\n\n    template&lt;typename F&gt;\n    static ProfileResult compare_builds(F&amp;&amp; func) {\n        ProfileResult result;\n\n        #ifdef _DEBUG\n        std::cout &lt;&lt; \"\u30c7\u30d0\u30c3\u30b0\u30d3\u30eb\u30c9\u3067\u306e\u8a08\u6e2c\\n\";\n        #else\n        std::cout &lt;&lt; \"\u30ea\u30ea\u30fc\u30b9\u30d3\u30eb\u30c9\u3067\u306e\u8a08\u6e2c\\n\";\n        #endif\n\n        \/\/ \u73fe\u5728\u306e\u8a2d\u5b9a\u3067\u306e\u8a08\u6e2c\n        auto current_time = measure_function(std::forward&lt;F&gt;(func));\n\n        \/\/ \u30d3\u30eb\u30c9\u8a2d\u5b9a\u306b\u5fdc\u3058\u3066\u7d50\u679c\u3092\u683c\u7d0d\n        #ifdef _DEBUG\n        result.debug_time = current_time;\n        result.release_time = estimate_release_time(current_time);\n        #else\n        result.release_time = current_time;\n        result.debug_time = estimate_debug_time(current_time);\n        #endif\n\n        result.ratio = result.release_time \/ result.debug_time;\n\n        print_comparison(result);\n        return result;\n    }\n\nprivate:\n    template&lt;typename F&gt;\n    static double measure_function(F&amp;&amp; func) {\n        \/\/ \u5b9f\u88c5\u7701\u7565\uff08\u524d\u8ff0\u306eRobustMeasurement\u30af\u30e9\u30b9\u3092\u4f7f\u7528\uff09\n        return 0.0;\n    }\n\n    static double estimate_release_time(double debug_time) {\n        \/\/ \u30c7\u30d0\u30c3\u30b0\u30d3\u30eb\u30c9\u304b\u3089\u30ea\u30ea\u30fc\u30b9\u30d3\u30eb\u30c9\u306e\u6642\u9593\u3092\u63a8\u5b9a\n        \/\/ \u3053\u308c\u306f\u6982\u7b97\u3067\u3042\u308a\u3001\u5b9f\u969b\u306e\u5024\u306f\u74b0\u5883\u306b\u3088\u308a\u7570\u306a\u308b\n        return debug_time * 0.2;  \/\/ \u4e00\u822c\u7684\u306a\u7d4c\u9a13\u5247\u3068\u3057\u3066\n    }\n\n    static double estimate_debug_time(double release_time) {\n        \/\/ \u30ea\u30ea\u30fc\u30b9\u30d3\u30eb\u30c9\u304b\u3089\u30c7\u30d0\u30c3\u30b0\u30d3\u30eb\u30c9\u306e\u6642\u9593\u3092\u63a8\u5b9a\n        return release_time * 5.0;\n    }\n\n    static void print_comparison(const ProfileResult&amp; result) {\n        std::cout &lt;&lt; \"\u30d3\u30eb\u30c9\u9593\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03:\\n\"\n                  &lt;&lt; \"  \u30c7\u30d0\u30c3\u30b0\u30d3\u30eb\u30c9: \" &lt;&lt; result.debug_time &lt;&lt; \"ns\\n\"\n                  &lt;&lt; \"  \u30ea\u30ea\u30fc\u30b9\u30d3\u30eb\u30c9: \" &lt;&lt; result.release_time &lt;&lt; \"ns\\n\"\n                  &lt;&lt; \"  \u9ad8\u901f\u5316\u7387: \" &lt;&lt; (1.0 - result.ratio) * 100 &lt;&lt; \"%\\n\";\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u969b\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u3070\u3089\u3064\u304d\u3078\u306e\u5bfe\u51e6<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5341\u5206\u306a\u56de\u6570\u306e\u6e2c\u5b9a<\/li>\n\n\n\n<li>\u5916\u308c\u5024\u306e\u9069\u5207\u306a\u9664\u53bb<\/li>\n\n\n\n<li>\u7d71\u8a08\u7684\u624b\u6cd5\u306e\u6d3b\u7528<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6700\u9069\u5316\u306e\u5f71\u97ff\u5236\u5fa1<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>volatile\u30ad\u30fc\u30ef\u30fc\u30c9\u306e\u9069\u5207\u306a\u4f7f\u7528<\/li>\n\n\n\n<li>\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u6700\u9069\u5316\u30d0\u30ea\u30a2\u306e\u8a2d\u7f6e<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d3\u30eb\u30c9\u74b0\u5883\u306e\u9055\u3044\u3078\u306e\u5bfe\u5fdc<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6761\u4ef6\u4ed8\u304d\u30b3\u30f3\u30d1\u30a4\u30eb\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u74b0\u5883\u306b\u5fdc\u3058\u305f\u9069\u5207\u306a\u8a08\u6e2c\u65b9\u6cd5\u306e\u9078\u629e<\/li>\n\n\n\n<li>\u7d50\u679c\u306e\u6b63\u898f\u5316\u3068\u6bd4\u8f03<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u89e3\u6c7a\u7b56\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u8a08\u6e2c\u7d50\u679c\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-22\">\u307e\u3068\u3081\u3068\u767a\u5c55\u7684\u306a\u8a71\u984c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-23\">\u6642\u9593\u8a08\u6e2c\u306e\u76ee\u7684\u306b\u5fdc\u3058\u305f\u624b\u6cd5\u306e\u9078\u3073\u65b9<\/h3>\n\n\n\n<p>C++\u306b\u304a\u3051\u308b\u6642\u9593\u8a08\u6e2c\u624b\u6cd5\u306f\u3001\u76ee\u7684\u3084\u8981\u4ef6\u306b\u3088\u3063\u3066\u9069\u5207\u306a\u9078\u629e\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u72b6\u6cc1\u5225\u306e\u63a8\u5968\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u307e\u3068\u3081\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5358\u7d14\u306a\u5b9f\u884c\u6642\u9593\u306e\u8a08\u6e2c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u57fa\u672c\u7684\u306a\u8a08\u6e2c\uff08\u9ad8\u7cbe\u5ea6\u304c\u4e0d\u8981\u306a\u5834\u5408\uff09\n#include &lt;chrono&gt;\n\nclass SimpleTimer {\npublic:\n    static void measure(const std::string&amp; description, \n                       const std::function&lt;void()&gt;&amp; func) {\n        auto start = std::chrono::high_resolution_clock::now();\n        func();\n        auto end = std::chrono::high_resolution_clock::now();\n\n        auto duration = std::chrono::duration_cast&lt;std::chrono::milliseconds&gt;\n            (end - start);\n        std::cout &lt;&lt; description &lt;&lt; \": \" &lt;&lt; duration.count() &lt;&lt; \"ms\\n\";\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u9ad8\u7cbe\u5ea6\u306a\u8a08\u6e2c\u304c\u5fc5\u8981\u306a\u5834\u5408<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u9ad8\u7cbe\u5ea6\u8a08\u6e2c\u7528\u306e\u30e9\u30c3\u30d1\u30fc\nclass PrecisionTimer {\npublic:\n    template&lt;typename F&gt;\n    static auto measure_precise(F&amp;&amp; func) {\n        auto start = std::chrono::steady_clock::now();  \/\/ steady_clock\u3092\u4f7f\u7528\n        auto result = std::forward&lt;F&gt;(func)();\n        auto end = std::chrono::steady_clock::now();\n\n        print_duration&lt;std::chrono::nanoseconds&gt;(end - start, \"\u30ca\u30ce\u79d2\");\n        print_duration&lt;std::chrono::microseconds&gt;(end - start, \"\u30de\u30a4\u30af\u30ed\u79d2\");\n\n        return result;\n    }\n\nprivate:\n    template&lt;typename Duration&gt;\n    static void print_duration(auto time_span, const char* unit) {\n        std::cout &lt;&lt; std::chrono::duration_cast&lt;Duration&gt;(time_span).count() \n                  &lt;&lt; \" \" &lt;&lt; unit &lt;&lt; \"\\n\";\n    }\n};<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u7d99\u7d9a\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u7528\u306e\u57fa\u672c\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\nclass PerformanceMonitor {\npublic:\n    void start_monitoring() {\n        monitoring_ = true;\n        monitor_thread_ = std::thread([this]() {\n            while (monitoring_) {\n                collect_metrics();\n                std::this_thread::sleep_for(std::chrono::seconds(1));\n            }\n        });\n    }\n\n    void stop_monitoring() {\n        monitoring_ = false;\n        if (monitor_thread_.joinable()) {\n            monitor_thread_.join();\n        }\n    }\n\nprivate:\n    void collect_metrics() {\n        \/\/ \u30b7\u30b9\u30c6\u30e0\u30e1\u30c8\u30ea\u30af\u30b9\u306e\u53ce\u96c6\n        \/\/ CPU\u4f7f\u7528\u7387\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306a\u3069\n    }\n\n    std::atomic&lt;bool&gt; monitoring_{false};\n    std::thread monitor_thread_;\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-24\">\u3088\u308a\u9ad8\u5ea6\u306a\u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u30c4\u30fc\u30eb\u3078\u306e\u767a\u5c55<\/h3>\n\n\n\n<p>\u5b9f\u8df5\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5206\u6790\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5c02\u9580\u7684\u306a\u30c4\u30fc\u30eb\u306e\u5229\u7528\u3082\u691c\u8a0e\u3059\u3079\u304d\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5916\u90e8\u30d7\u30ed\u30d5\u30a1\u30a4\u30e9\u30fc<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Intel VTune Profiler\n<ul class=\"wp-block-list\">\n<li>\u8a73\u7d30\u306aCPU\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5206\u6790<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u4f7f\u7528\u7387\u306e\u5206\u6790<\/li>\n\n\n\n<li>\u30b9\u30ec\u30c3\u30c9\u9593\u306e\u4f9d\u5b58\u95a2\u4fc2\u306e\u53ef\u8996\u5316<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Valgrind\/Callgrind\n<ul class=\"wp-block-list\">\n<li>\u95a2\u6570\u547c\u3073\u51fa\u3057\u30b0\u30e9\u30d5\u306e\u751f\u6210<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u30df\u30b9\u306e\u5206\u6790<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u8ffd\u8de1<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u7d44\u307f\u8fbc\u307f\u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u7528\u30de\u30af\u30ed\n#ifdef ENABLE_PROFILING\n    #define PROFILE_SCOPE(name) Timer timer##__LINE__(name)\n    #define PROFILE_FUNCTION() PROFILE_SCOPE(__func__)\n#else\n    #define PROFILE_SCOPE(name)\n    #define PROFILE_FUNCTION()\n#endif\n\n\/\/ \u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u60c5\u5831\u306e\u53ce\u96c6\nclass Profiler {\npublic:\n    struct ProfilePoint {\n        std::string name;\n        std::chrono::nanoseconds duration;\n        size_t call_count;\n    };\n\n    static void begin_session(const std::string&amp; name) {\n        instance().current_session_ = name;\n    }\n\n    static void end_session() {\n        instance().write_profile();\n    }\n\n    static void trace(const std::string&amp; name, \n                     std::chrono::nanoseconds duration) {\n        auto&amp; profiler = instance();\n        auto&amp; data = profiler.profile_points_[name];\n        data.name = name;\n        data.duration += duration;\n        data.call_count++;\n    }\n\nprivate:\n    static Profiler&amp; instance() {\n        static Profiler instance;\n        return instance;\n    }\n\n    void write_profile() {\n        \/\/ \u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u7d50\u679c\u306e\u51fa\u529b\n        \/\/ JSON\u5f62\u5f0f\u3067\u306e\u51fa\u529b\u4f8b\n        std::ofstream file(current_session_ + \".json\");\n        file &lt;&lt; \"{\\n\\\"traceEvents\\\": [\\n\";\n\n        for (const auto&amp; [name, point] : profile_points_) {\n            file &lt;&lt; \"{\\n\"\n                 &lt;&lt; \"  \\\"name\\\": \\\"\" &lt;&lt; point.name &lt;&lt; \"\\\",\\n\"\n                 &lt;&lt; \"  \\\"duration\\\": \" &lt;&lt; point.duration.count() &lt;&lt; \",\\n\"\n                 &lt;&lt; \"  \\\"calls\\\": \" &lt;&lt; point.call_count &lt;&lt; \"\\n\"\n                 &lt;&lt; \"},\\n\";\n        }\n\n        file &lt;&lt; \"]\\n}\";\n    }\n\n    std::string current_session_;\n    std::unordered_map&lt;std::string, ProfilePoint&gt; profile_points_;\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u767a\u5c55\u7684\u306a\u30c4\u30fc\u30eb\u3068\u624b\u6cd5\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u9ad8\u5ea6\u306a\u5206\u6790\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b7\u30b9\u30c6\u30e0\u30ec\u30d9\u30eb\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CPU\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u4f7f\u7528\u52b9\u7387<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u30d1\u30bf\u30fc\u30f3\u306e\u6700\u9069\u5316<\/li>\n\n\n\n<li>\u30b9\u30ec\u30c3\u30c9\u9593\u306e\u540c\u671f\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u30ec\u30d9\u30eb\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30db\u30c3\u30c8\u30d1\u30b9\u306e\u7279\u5b9a\u3068\u6700\u9069\u5316<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6700\u5c0f\u5316<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u9078\u629e\u3068\u6700\u9069\u5316<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u7d99\u7d9a\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u76e3\u8996<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6027\u80fd\u52a3\u5316\u306e\u65e9\u671f\u767a\u898b<\/li>\n\n\n\n<li>\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306e\u81ea\u52d5\u691c\u51fa<\/li>\n\n\n\n<li>\u6700\u9069\u5316\u306e\u52b9\u679c\u6e2c\u5b9a<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u77e5\u8b58\u3068\u6280\u8853\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u679c\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u5e38\u306b\u65b0\u3057\u3044\u30c4\u30fc\u30eb\u3084\u624b\u6cd5\u3092\u30ad\u30e3\u30c3\u30c1\u30a2\u30c3\u30d7\u3057\u3001\u9032\u5316\u3057\u7d9a\u3051\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Warning: Undefined array key &#8220;is_admin&#8221; in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/ &#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":{"0":"post-2063","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-cpp","7":"nothumb"},"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2063","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2063"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2063\/revisions"}],"predecessor-version":[{"id":2064,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2063\/revisions\/2064"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2063"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2063"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2063"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}