{"id":1981,"date":"2025-03-24T08:48:36","date_gmt":"2025-03-23T23:48:36","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=1981"},"modified":"2025-03-24T08:49:00","modified_gmt":"2025-03-23T23:49:00","slug":"stdqueue%e3%83%9e%e3%82%b9%e3%82%bf%e3%83%bc%e3%82%ac%e3%82%a4%e3%83%89%ef%bc%9a%e5%ae%9f%e8%b7%b5%e3%81%a7%e4%bd%bf%e3%81%88%e3%82%8b7%e3%81%a4%e3%81%ae%e9%87%8d%e8%a6%81%e3%83%86%e3%82%af%e3%83%8b","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=1981","title":{"rendered":"std::queue\u30de\u30b9\u30bf\u30fc\u30ac\u30a4\u30c9\uff1a\u5b9f\u8df5\u3067\u4f7f\u3048\u308b7\u3064\u306e\u91cd\u8981\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\">std::queue\u306e\u57fa\u790e\u77e5\u8b58<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u30ad\u30e5\u30fc\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u7279\u5fb4\u3068\u5229\u70b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">std::queue\u306e\u5185\u90e8\u5b9f\u88c5\u3068\u7279\u5fb4<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">std::queue\u306e\u57fa\u672c\u64cd\u4f5c<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">\u8981\u7d20\u306e\u8ffd\u52a0\u3068\u524a\u9664\u306e\u6b63\u3057\u3044\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-5\">\u30b5\u30a4\u30ba\u3068\u7a7a\u5224\u5b9a\u306e\u52b9\u7387\u7684\u306a\u6271\u3044\u65b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-6\">\u5b9f\u8df5\u7684\u306astd::queue\u306e\u4f7f\u3044\u65b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-7\">\u30e1\u30e2\u30ea\u52b9\u7387\u3092\u6700\u5927\u5316\u3059\u308b\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li>        <a href=\"#i-8\">\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306a\u5b9f\u88c5\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-9\">\u30ab\u30b9\u30bf\u30e0\u30b3\u30f3\u30c6\u30ca\u3092\u6d3b\u7528\u3057\u305f\u62e1\u5f35\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-10\">std::queue\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-11\">\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-12\">\u30ad\u30e3\u30d1\u30b7\u30c6\u30a3\u7ba1\u7406\u306b\u3088\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-13\">std::queue\u306e\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-14\">\u975e\u540c\u671f\u51e6\u7406\u3067\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u30ad\u30e5\u30fc\u306e\u5b9f\u88c5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-15\">\u30ec\u30d9\u30eb\u9806\u8d70\u67fb\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u306e\u6d3b\u7528\u4f8b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-16\">std::queue\u306e\u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\u5bfe\u5fdc<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-17\">\u30e1\u30e2\u30ea\u4e0d\u8db3\u6642\u306e\u9069\u5207\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">\u5927\u91cf\u30c7\u30fc\u30bf\u51e6\u7406\u6642\u306e\u6ce8\u610f\u70b9\u3068\u5bfe\u7b56<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-19\">std::queue\u306e\u30c7\u30d0\u30c3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-20\">\u4e00\u822c\u7684\u306a\u30d0\u30b0\u30d1\u30bf\u30fc\u30f3\u3068\u89e3\u6c7a\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-21\">\u52b9\u7387\u7684\u306a\u30c7\u30d0\u30c3\u30b0\u30c6\u30af\u30cb\u30c3\u30af<\/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\">std::queue\u306e\u57fa\u790e\u77e5\u8b58<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u30ad\u30e5\u30fc\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u7279\u5fb4\u3068\u5229\u70b9<\/h3>\n\n\n\n<p>\u30ad\u30e5\u30fc\uff08Queue\uff09\u306f\u3001First-In-First-Out\uff08FIFO\uff09\u539f\u5247\u306b\u57fa\u3065\u304f\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u6700\u521d\u306b\u5165\u308c\u3089\u308c\u305f\u8981\u7d20\u304c\u6700\u521d\u306b\u53d6\u308a\u51fa\u3055\u308c\u308b\u4ed5\u7d44\u307f\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u65e5\u5e38\u751f\u6d3b\u3067\u3044\u3048\u3070\u3001\u5217\u306b\u4e26\u3076\u69d8\u5b50\u3068\u3088\u304f\u4f3c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u30ad\u30e5\u30fc\u306e\u4e3b\u306a\u7279\u5fb4\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>FIFO\u30a2\u30af\u30bb\u30b9\u30d1\u30bf\u30fc\u30f3<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8981\u7d20\u306f\u5fc5\u305a\u633f\u5165\u3055\u308c\u305f\u9806\u5e8f\u3067\u51e6\u7406\u3055\u308c\u308b<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u306e\u9806\u5e8f\u6027\u304c\u81ea\u7136\u306b\u4fdd\u305f\u308c\u308b<\/li>\n\n\n\n<li>\u5148\u7740\u9806\u306e\u51e6\u7406\u304c\u5fc5\u8981\u306a\u5834\u5408\u306b\u6700\u9069<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u9650\u5b9a\u7684\u306a\u64cd\u4f5c\u30bb\u30c3\u30c8<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>push(): \u672b\u5c3e\u3078\u306e\u8981\u7d20\u8ffd\u52a0<\/li>\n\n\n\n<li>pop(): \u5148\u982d\u8981\u7d20\u306e\u524a\u9664<\/li>\n\n\n\n<li>front(): \u5148\u982d\u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9<\/li>\n\n\n\n<li>back(): \u672b\u5c3e\u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9<\/li>\n\n\n\n<li>empty(): \u30ad\u30e5\u30fc\u304c\u7a7a\u304b\u3069\u3046\u304b\u306e\u78ba\u8a8d<\/li>\n\n\n\n<li>size(): \u73fe\u5728\u306e\u30b5\u30a4\u30ba\u53d6\u5f97<\/li>\n<\/ul>\n\n\n\n<p><strong>\u5b9f\u88c5\u4f8b\uff1a<\/strong><\/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;queue&gt;\n#include &lt;string&gt;\n\n\/\/ \u57fa\u672c\u7684\u306a\u30ad\u30e5\u30fc\u306e\u4f7f\u7528\u4f8b\nstd::queue&lt;std::string&gt; messageQueue;\n\n\/\/ \u8981\u7d20\u306e\u8ffd\u52a0\nmessageQueue.push(\"First Message\");   \/\/ \u30ad\u30e5\u30fc\u306e\u672b\u5c3e\u306b\u8ffd\u52a0\nmessageQueue.push(\"Second Message\");  \/\/ \u305d\u306e\u5f8c\u308d\u306b\u8ffd\u52a0\n\n\/\/ \u5148\u982d\u8981\u7d20\u306e\u53d6\u5f97\u3068\u524a\u9664\nstd::string firstMessage = messageQueue.front();  \/\/ \"First Message\"\u3092\u53d6\u5f97\nmessageQueue.pop();                               \/\/ \u5148\u982d\u8981\u7d20\u3092\u524a\u9664<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">std::queue\u306e\u5185\u90e8\u5b9f\u88c5\u3068\u7279\u5fb4<\/h3>\n\n\n\n<p>std::queue\u306f\u3001\u5b9f\u969b\u306b\u306f\u30b3\u30f3\u30c6\u30ca\u30a2\u30c0\u30d7\u30bf\u3068\u3057\u3066\u5b9f\u88c5\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f<code>std::deque<\/code>\u3092\u30d9\u30fc\u30b9\u30b3\u30f3\u30c6\u30ca\u3068\u3057\u3066\u4f7f\u7528\u3057\u307e\u3059\u304c\u3001<code>std::list<\/code>\u3084\u4ed6\u306e\u9069\u5207\u306a\u30b3\u30f3\u30c6\u30ca\u3082\u4f7f\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u5185\u90e8\u5b9f\u88c5\u306e\u7279\u5fb4\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c7\u30d5\u30a9\u30eb\u30c8\u30b3\u30f3\u30c6\u30ca\uff08std::deque\uff09\u306e\u5229\u70b9<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e21\u7aef\u3067\u306e\u52b9\u7387\u7684\u306a\u633f\u5165\u30fb\u524a\u9664\uff08O(1)\u306e\u8a08\u7b97\u91cf\uff09<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u306e\u52d5\u7684\u306a\u62e1\u5f35\u30fb\u7e2e\u5c0f\u304c\u53ef\u80fd<\/li>\n\n\n\n<li>\u30e9\u30f3\u30c0\u30e0\u30a2\u30af\u30bb\u30b9\u306e\u30b5\u30dd\u30fc\u30c8\uff08\u305f\u3060\u3057queue\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304b\u3089\u306f\u5236\u9650\uff09<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u53ef\u80fd\u6027<\/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=\"\">\/\/ list\u3092\u30d9\u30fc\u30b9\u30b3\u30f3\u30c6\u30ca\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u4f8b\n#include &lt;list&gt;\nstd::queue&lt;int, std::list&lt;int&gt;&gt; customQueue;\n\n\/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u306edeque\u3092\u4f7f\u7528\u3059\u308b\u4f8b\nstd::queue&lt;int&gt; defaultQueue;  \/\/ std::deque&lt;int&gt;\u304c\u5185\u90e8\u3067\u4f7f\u7528\u3055\u308c\u308b<\/pre>\n\n\n\n<p><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u7279\u6027\uff1a<\/strong><\/p>\n\n\n<div id=\"id-a75ca95e-efaf-42f6-a087-5c14eae4e844\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u64cd\u4f5c<\/th><th>\u8a08\u7b97\u91cf<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>push()<\/td><td>O(1)<\/td><td>\u672b\u5c3e\u3078\u306e\u8ffd\u52a0\u306f\u5b9a\u6570\u6642\u9593<\/td><\/tr><tr><td>pop()<\/td><td>O(1)<\/td><td>\u5148\u982d\u304b\u3089\u306e\u524a\u9664\u3082\u5b9a\u6570\u6642\u9593<\/td><\/tr><tr><td>front()<\/td><td>O(1)<\/td><td>\u5148\u982d\u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306f\u5373\u6642<\/td><\/tr><tr><td>back()<\/td><td>O(1)<\/td><td>\u672b\u5c3e\u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3082\u5373\u6642<\/td><\/tr><tr><td>size()<\/td><td>O(1)<\/td><td>\u30b5\u30a4\u30ba\u306e\u53d6\u5f97\u306f\u5b9a\u6570\u6642\u9593<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p><strong>\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u7279\u5fb4\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30d5\u30a9\u30eb\u30c8\u306edeque\u30d9\u30fc\u30b9\u306e\u5b9f\u88c5\u3067\u306f\u3001\u30e1\u30e2\u30ea\u306f\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u81ea\u52d5\u7684\u306b\u78ba\u4fdd\u30fb\u89e3\u653e<\/li>\n\n\n\n<li>\u5185\u90e8\u7684\u306b\u306f\u30d6\u30ed\u30c3\u30af\u5358\u4f4d\u3067\u30e1\u30e2\u30ea\u3092\u7ba1\u7406\u3057\u3001\u52b9\u7387\u7684\u306a\u30e1\u30e2\u30ea\u4f7f\u7528\u3092\u5b9f\u73fe<\/li>\n\n\n\n<li>\u8981\u7d20\u306e\u8ffd\u52a0\u30fb\u524a\u9664\u306b\u4f34\u3046\u30e1\u30e2\u30ea\u306e\u518d\u914d\u7f6e\u304c\u6700\u5c0f\u9650<\/li>\n<\/ul>\n\n\n\n<p>\u4ee5\u4e0a\u306e\u7279\u5fb4\u306b\u3088\u308a\u3001std::queue\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u7279\u306b\u52b9\u529b\u3092\u767a\u63ee\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u975e\u540c\u671f\u51e6\u7406\u3067\u306e\u30bf\u30b9\u30af\u30ad\u30e5\u30fc<\/li>\n\n\n\n<li>\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u30b7\u30b9\u30c6\u30e0<\/li>\n\n\n\n<li>\u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u304c\u5fc5\u8981\u306a\u51e6\u7406<\/li>\n\n\n\n<li>\u30d7\u30ed\u30c7\u30e5\u30fc\u30b5\u30fb\u30b3\u30f3\u30b7\u30e5\u30fc\u30de\u30d1\u30bf\u30fc\u30f3\u306e\u5b9f\u88c5<\/li>\n<\/ul>\n\n\n\n<p>\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u57fa\u790e\u77e5\u8b58\u3092\u6d3b\u7528\u3057\u305f\u5177\u4f53\u7684\u306a\u64cd\u4f5c\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">std::queue\u306e\u57fa\u672c\u64cd\u4f5c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u8981\u7d20\u306e\u8ffd\u52a0\u3068\u524a\u9664\u306e\u6b63\u3057\u3044\u65b9\u6cd5<\/h3>\n\n\n\n<p>std::queue\u3067\u306e\u8981\u7d20\u306e\u8ffd\u52a0\u3068\u524a\u9664\u306f\u3001\u30b7\u30f3\u30d7\u30eb\u306a\u304c\u3089\u6ce8\u610f\u3059\u3079\u304d\u70b9\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u3067\u3001\u57fa\u672c\u7684\u306a\u64cd\u4f5c\u3068\u305d\u306e\u969b\u306e\u6ce8\u610f\u70b9\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u8981\u7d20\u306e\u8ffd\u52a0\uff08push\u64cd\u4f5c\uff09<\/strong><\/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;queue&gt;\n#include &lt;string&gt;\n\nstd::queue&lt;std::string&gt; taskQueue;\n\n\/\/ \u57fa\u672c\u7684\u306a\u8ffd\u52a0\u64cd\u4f5c\ntaskQueue.push(\"Task 1\");  \/\/ \u672b\u5c3e\u306b\u8981\u7d20\u3092\u8ffd\u52a0\n\n\/\/ \u53f3\u5024\u53c2\u7167\u3092\u4f7f\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u8ffd\u52a0\nstd::string task = \"Task 2\";\ntaskQueue.push(std::move(task));  \/\/ move\u306b\u3088\u308b\u30b3\u30d4\u30fc\u306e\u524a\u6e1b\n\n\/\/ emplace\u64cd\u4f5c\u306b\u3088\u308b\u76f4\u63a5\u69cb\u7bc9\ntaskQueue.emplace(\"Task 3\");  \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u76f4\u63a5\u547c\u3073\u51fa\u3057<\/pre>\n\n\n\n<p><strong>\u8ffd\u52a0\u64cd\u4f5c\u3067\u306e\u6ce8\u610f\u70b9\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>push\u64cd\u4f5c\u306f\u4f8b\u5916\u3092\u6295\u3052\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\uff08\u30e1\u30e2\u30ea\u78ba\u4fdd\u5931\u6557\u6642\uff09<\/li>\n\n\n\n<li>emplace\u64cd\u4f5c\u306f\u69cb\u7bc9\u3092\u6700\u9069\u5316\u3067\u304d\u308b\u305f\u3081\u3001\u53ef\u80fd\u306a\u5834\u5408\u306f\u512a\u5148\u3057\u3066\u4f7f\u7528<\/li>\n\n\n\n<li>\u5927\u304d\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u5834\u5408\u306f\u3001std::move\u3092\u6d3b\u7528<\/li>\n<\/ul>\n\n\n\n<p><strong>2. \u8981\u7d20\u306e\u524a\u9664\uff08pop\u64cd\u4f5c\uff09<\/strong><\/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=\"\">\/\/ \u5b89\u5168\u306a\u8981\u7d20\u306e\u53d6\u308a\u51fa\u3057\u30d1\u30bf\u30fc\u30f3\nif (!taskQueue.empty()) {\n    std::string currentTask = taskQueue.front();  \/\/ \u5148\u982d\u8981\u7d20\u3092\u53d6\u5f97\n    taskQueue.pop();                              \/\/ \u53d6\u5f97\u5f8c\u306b\u524a\u9664\n    \/\/ currentTask\u306e\u51e6\u7406\n}\n\n\/\/ \u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3\uff08\u907f\u3051\u308b\u3079\u304d\u5b9f\u88c5\uff09\n\/\/ taskQueue.pop();  \/\/ \u7a7a\u306e\u30ad\u30e5\u30fc\u306b\u5bfe\u3059\u308bpop\u306f\u672a\u5b9a\u7fa9\u52d5\u4f5c\n\/\/ std::string task = taskQueue.front();  \/\/ \u7a7a\u306e\u30ad\u30e5\u30fc\u306b\u5bfe\u3059\u308bfront\u306f\u672a\u5b9a\u7fa9\u52d5\u4f5c<\/pre>\n\n\n\n<p><strong>\u524a\u9664\u64cd\u4f5c\u3067\u306e\u6ce8\u610f\u70b9\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5fc5\u305aempty()\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3063\u3066\u304b\u3089\u64cd\u4f5c\u3059\u308b<\/li>\n\n\n\n<li>front()\u3068pop()\u306f\u5206\u96e2\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u30a2\u30c8\u30df\u30c3\u30af\u306a\u64cd\u4f5c\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u5225\u9014\u540c\u671f\u304c\u5fc5\u8981<\/li>\n\n\n\n<li>pop\u306f\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u3060\u3051\u3067\u5024\u3092\u8fd4\u3055\u306a\u3044\u3053\u3068\u306b\u6ce8\u610f<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">\u30b5\u30a4\u30ba\u3068\u7a7a\u5224\u5b9a\u306e\u52b9\u7387\u7684\u306a\u6271\u3044\u65b9<\/h3>\n\n\n\n<p>\u30ad\u30e5\u30fc\u306e\u30b5\u30a4\u30ba\u7ba1\u7406\u3068\u7a7a\u5224\u5b9a\u306f\u3001\u52b9\u7387\u7684\u306a\u30ad\u30e5\u30fc\u64cd\u4f5c\u306e\u8981\u3068\u306a\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u3067\u3001\u6b63\u3057\u3044\u4f7f\u7528\u65b9\u6cd5\u3068\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u30b5\u30a4\u30ba\u7ba1\u7406\u306e\u57fa\u672c<\/strong><\/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=\"\">std::queue&lt;int&gt; dataQueue;\n\n\/\/ \u30b5\u30a4\u30ba\u95a2\u9023\u306e\u57fa\u672c\u64cd\u4f5c\nsize_t currentSize = dataQueue.size();  \/\/ \u73fe\u5728\u306e\u30b5\u30a4\u30ba\u3092\u53d6\u5f97\nbool isEmpty = dataQueue.empty();       \/\/ \u7a7a\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\n\n\/\/ \u30b5\u30a4\u30ba\u3092\u4f7f\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u51e6\u7406\nif (dataQueue.size() &gt; 1) {  \/\/ \u8907\u6570\u8981\u7d20\u304c\u3042\u308b\u5834\u5408\u306e\u51e6\u7406\n    \/\/ \u30d0\u30c3\u30c1\u51e6\u7406\u306a\u3069\u306e\u5b9f\u88c5\n}<\/pre>\n\n\n\n<p><strong>\u30b5\u30a4\u30ba\u7ba1\u7406\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/strong><\/p>\n\n\n<div id=\"id-1215623b-7464-4846-b906-cd596f2628fc\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u64cd\u4f5c<\/th><th>\u63a8\u5968\u3055\u308c\u308b\u4f7f\u7528\u5834\u9762<\/th><th>\u907f\u3051\u308b\u3079\u304d\u4f7f\u7528\u5834\u9762<\/th><\/tr><\/thead><tbody><tr><td>size()<\/td><td>\u30d0\u30c3\u30c1\u51e6\u7406\u306e\u8a08\u753b\u6642<\/td><td>\u983b\u7e41\u306a\u547c\u3073\u51fa\u3057<\/td><\/tr><tr><td>empty()<\/td><td>\u8981\u7d20\u53d6\u308a\u51fa\u3057\u524d\u306e\u78ba\u8a8d<\/td><td>size() == 0 \u306e\u4ee3\u7528<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p><strong>2. \u52b9\u7387\u7684\u306a\u5224\u5b9a\u51e6\u7406<\/strong><\/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=\"\">\/\/ \u52b9\u7387\u7684\u306a\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\nwhile (!dataQueue.empty()) {\n    \/\/ \u30ad\u30e5\u30fc\u304c\u7a7a\u306b\u306a\u308b\u307e\u3067\u51e6\u7406\n    process(dataQueue.front());\n    dataQueue.pop();\n}\n\n\/\/ \u30ad\u30e3\u30d1\u30b7\u30c6\u30a3\u7ba1\u7406\u306e\u4f8b\ntemplate&lt;typename T&gt;\nclass ManagedQueue {\n    std::queue&lt;T&gt; queue;\n    const size_t maxSize;\npublic:\n    ManagedQueue(size_t limit) : maxSize(limit) {}\n\n    bool tryPush(const T&amp; value) {\n        if (queue.size() &gt;= maxSize) return false;\n        queue.push(value);\n        return true;\n    }\n};<\/pre>\n\n\n\n<p><strong>\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c1\u30a7\u30c3\u30af\u306e\u512a\u5148\u9806\u4f4d<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>empty()\u306f\u6700\u3082\u8efd\u91cf\u306a\u64cd\u4f5c\u3068\u3057\u3066\u512a\u5148\u7684\u306b\u4f7f\u7528<\/li>\n\n\n\n<li>size()\u306e\u547c\u3073\u51fa\u3057\u306f\u5fc5\u8981\u306a\u5834\u5408\u306e\u307f\u306b\u9650\u5b9a<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u306e\u8003\u616e<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u5b9a\u6570\u306e\u8981\u7d20\u304c\u305f\u307e\u3063\u3066\u304b\u3089\u51e6\u7406\u3092\u884c\u3046\u5834\u5408\u306fsize()\u3092\u6d3b\u7528<\/li>\n\n\n\n<li>\u305f\u3060\u3057\u3001\u983b\u7e41\u306asize()\u30c1\u30a7\u30c3\u30af\u306f\u907f\u3051\u308b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u7ba1\u7406\u3068\u306e\u95a2\u9023<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8981\u7d20\u6570\u304c\u591a\u3044\u5834\u5408\u3001\u30b9\u30ef\u30c3\u30d7\u30c6\u30af\u30cb\u30c3\u30af\u3067\u30e1\u30e2\u30ea\u3092\u89e3\u653e<\/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=\"\">   void clearAndShrink(std::queue&lt;int&gt;&amp; q) {\n       std::queue&lt;int&gt;().swap(q);  \/\/ \u30e1\u30e2\u30ea\u3092\u89e3\u653e\n   }<\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>empty()\u306b\u3088\u308b\u30c1\u30a7\u30c3\u30af\u3092\u512a\u5148<\/li>\n\n\n\n<li>\u30d0\u30c3\u30c1\u51e6\u7406\u6642\u306fsize()\u3092\u4e00\u5ea6\u3060\u3051\u53d6\u5f97<\/li>\n\n\n\n<li>\u53ef\u80fd\u306a\u5834\u5408\u306freserve\u76f8\u5f53\u306e\u4e8b\u524d\u78ba\u4fdd\u3092\u691c\u8a0e<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u64cd\u4f5c\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u3067\u5b89\u5168\u306a\u30ad\u30e5\u30fc\u64cd\u4f5c\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u57fa\u672c\u64cd\u4f5c\u3092\u6d3b\u7528\u3057\u305f\u3001\u3088\u308a\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-6\">\u5b9f\u8df5\u7684\u306astd::queue\u306e\u4f7f\u3044\u65b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u30e1\u30e2\u30ea\u52b9\u7387\u3092\u6700\u5927\u5316\u3059\u308b\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u6700\u9069\u5316\u306f\u3001\u5927\u898f\u6a21\u30b7\u30b9\u30c6\u30e0\u3084\u30ea\u30bd\u30fc\u30b9\u5236\u7d04\u306e\u3042\u308b\u74b0\u5883\u3067\u7279\u306b\u91cd\u8981\u3067\u3059\u3002\u4ee5\u4e0b\u3067\u3001\u5b9f\u8df5\u7684\u306a\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u6d3b\u7528<\/strong><\/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;queue&gt;\n#include &lt;memory&gt;\n\n\/\/ \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u5b9f\u88c5\u4f8b\ntemplate&lt;typename T&gt;\nclass PoolAllocator {\n    \/\/ \u30e1\u30e2\u30ea\u30d7\u30fc\u30eb\u306e\u5b9f\u88c5\n    static constexpr size_t POOL_SIZE = 1024;\n    char pool[POOL_SIZE];\n    size_t current_pos = 0;\n\npublic:\n    using value_type = T;\n\n    T* allocate(size_t n) {\n        if (current_pos + n * sizeof(T) &lt;= POOL_SIZE) {\n            T* result = reinterpret_cast&lt;T*&gt;(&amp;pool[current_pos]);\n            current_pos += n * sizeof(T);\n            return result;\n        }\n        throw std::bad_alloc();\n    }\n\n    void deallocate(T* p, size_t n) {\n        \/\/ \u7c21\u7565\u5316\u306e\u305f\u3081\u3001\u5b9f\u969b\u306e\u89e3\u653e\u51e6\u7406\u306f\u7701\u7565\n    }\n};\n\n\/\/ \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u305f\u30ad\u30e5\u30fc\nstd::queue&lt;int, std::deque&lt;int, PoolAllocator&lt;int&gt;&gt;&gt; optimizedQueue;<\/pre>\n\n\n\n<p><strong>2. \u30e1\u30e2\u30ea\u518d\u5229\u7528\u30d1\u30bf\u30fc\u30f3<\/strong><\/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 T&gt;\nclass ReusableQueue {\n    std::queue&lt;T&gt; active_queue;\n    std::queue&lt;T&gt; recycled_queue;\n\npublic:\n    void push(const T&amp; value) {\n        if (!recycled_queue.empty()) {\n            \/\/ \u518d\u5229\u7528\u53ef\u80fd\u306a\u8981\u7d20\u304c\u3042\u308b\u5834\u5408\n            T&amp; reusable = recycled_queue.front();\n            reusable = value;  \/\/ \u65e2\u5b58\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u5229\u7528\n            active_queue.push(std::move(reusable));\n            recycled_queue.pop();\n        } else {\n            active_queue.push(value);\n        }\n    }\n\n    void recycle() {\n        if (!active_queue.empty()) {\n            recycled_queue.push(std::move(active_queue.front()));\n            active_queue.pop();\n        }\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306a\u5b9f\u88c5\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u74b0\u5883\u3067\u306e\u30ad\u30e5\u30fc\u64cd\u4f5c\u306f\u3001\u9069\u5207\u306a\u540c\u671f\u6a5f\u69cb\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u4ee5\u4e0b\u3067\u3001\u5b9f\u8df5\u7684\u306a\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u5b9f\u88c5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u30df\u30e5\u30fc\u30c6\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u305f\u57fa\u672c\u5b9f\u88c5<\/strong><\/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;mutex&gt;\n#include &lt;condition_variable&gt;\n\ntemplate&lt;typename T&gt;\nclass ThreadSafeQueue {\n    std::queue&lt;T&gt; queue;\n    mutable std::mutex mtx;\n    std::condition_variable not_empty;\n\npublic:\n    void push(T value) {\n        std::lock_guard&lt;std::mutex&gt; lock(mtx);\n        queue.push(std::move(value));\n        not_empty.notify_one();\n    }\n\n    bool try_pop(T&amp; value) {\n        std::lock_guard&lt;std::mutex&gt; lock(mtx);\n        if (queue.empty()) return false;\n        value = std::move(queue.front());\n        queue.pop();\n        return true;\n    }\n\n    void wait_and_pop(T&amp; value) {\n        std::unique_lock&lt;std::mutex&gt; lock(mtx);\n        not_empty.wait(lock, [this] { return !queue.empty(); });\n        value = std::move(queue.front());\n        queue.pop();\n    }\n};<\/pre>\n\n\n\n<p><strong>2. \u30ed\u30c3\u30af\u30d5\u30ea\u30fc\u5b9f\u88c5<\/strong><\/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;atomic&gt;\n\ntemplate&lt;typename T&gt;\nclass LockFreeQueue {\n    struct Node {\n        std::shared_ptr&lt;T&gt; data;\n        std::atomic&lt;Node*&gt; next;\n        Node() : next(nullptr) {}\n    };\n\n    std::atomic&lt;Node*&gt; head;\n    std::atomic&lt;Node*&gt; tail;\n\npublic:\n    LockFreeQueue() {\n        Node* dummy = new Node;\n        head.store(dummy);\n        tail.store(dummy);\n    }\n\n    void push(T value) {\n        std::shared_ptr&lt;T&gt; new_data = std::make_shared&lt;T&gt;(std::move(value));\n        Node* new_node = new Node;\n        new_node-&gt;data = new_data;\n\n        while (true) {\n            Node* old_tail = tail.load();\n            Node* next = old_tail-&gt;next.load();\n\n            if (next == nullptr) {\n                if (old_tail-&gt;next.compare_exchange_weak(next, new_node)) {\n                    tail.compare_exchange_strong(old_tail, new_node);\n                    return;\n                }\n            } else {\n                tail.compare_exchange_strong(old_tail, next);\n            }\n        }\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u30ab\u30b9\u30bf\u30e0\u30b3\u30f3\u30c6\u30ca\u3092\u6d3b\u7528\u3057\u305f\u62e1\u5f35\u65b9\u6cd5<\/h3>\n\n\n\n<p>std::queue\u306e\u6a5f\u80fd\u3092\u62e1\u5f35\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u3001\u30ab\u30b9\u30bf\u30e0\u30b3\u30f3\u30c6\u30ca\u306e\u6d3b\u7528\u304c\u52b9\u679c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u512a\u5148\u5ea6\u4ed8\u304d\u30ad\u30e5\u30fc\u306e\u5b9f\u88c5<\/strong><\/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 T, typename Container = std::vector&lt;T&gt;&gt;\nclass PriorityQueue {\n    struct Item {\n        T value;\n        int priority;\n\n        bool operator&lt;(const Item&amp; other) const {\n            return priority &lt; other.priority;\n        }\n    };\n\n    std::priority_queue&lt;Item, Container&gt; queue;\n\npublic:\n    void push(T value, int priority) {\n        queue.push(Item{std::move(value), priority});\n    }\n\n    T pop() {\n        T value = std::move(queue.top().value);\n        queue.pop();\n        return value;\n    }\n};<\/pre>\n\n\n\n<p><strong>2. \u5bb9\u91cf\u5236\u9650\u4ed8\u304d\u30ad\u30e5\u30fc\u306e\u5b9f\u88c5<\/strong><\/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 T, size_t MaxSize&gt;\nclass BoundedQueue {\n    std::queue&lt;T&gt; queue;\n    std::mutex mtx;\n    std::condition_variable not_full;\n    std::condition_variable not_empty;\n\npublic:\n    void push(T value) {\n        std::unique_lock&lt;std::mutex&gt; lock(mtx);\n        not_full.wait(lock, [this] { return queue.size() &lt; MaxSize; });\n        queue.push(std::move(value));\n        not_empty.notify_one();\n    }\n\n    bool try_push(T value) {\n        std::lock_guard&lt;std::mutex&gt; lock(mtx);\n        if (queue.size() &gt;= MaxSize) return false;\n        queue.push(std::move(value));\n        not_empty.notify_one();\n        return true;\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u8981\u4ef6\u306b\u5fdc\u3058\u305f\u52b9\u7387\u7684\u306a\u30ad\u30e5\u30fc\u51e6\u7406\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u5b9f\u88c5\u3092\u57fa\u306b\u3057\u305f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\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-10\">std::queue\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6700\u5c0f\u5316\u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u8981\u3068\u306a\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u3067\u3001\u5177\u4f53\u7684\u306a\u6700\u9069\u5316\u624b\u6cd5\u3068\u5b9f\u88c5\u4f8b\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u30d7\u30ea\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u6226\u7565<\/strong><\/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;queue&gt;\n#include &lt;deque&gt;\n#include &lt;chrono&gt;\n\ntemplate&lt;typename T&gt;\nclass PreallocatedQueue {\n    std::queue&lt;T, std::deque&lt;T&gt;&gt; queue;\n\npublic:\n    explicit PreallocatedQueue(size_t initial_capacity) {\n        \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u30b3\u30f3\u30c6\u30ca(deque)\u306e\u5185\u90e8\u30d0\u30c3\u30d5\u30a1\u3092\u4e8b\u524d\u78ba\u4fdd\n        std::deque&lt;T&gt;&amp; container = *queue._Get_container();\n        container.reserve(initial_capacity);\n    }\n\n    void push(const T&amp; value) {\n        queue.push(value);\n    }\n\n    \/\/ \u6a19\u6e96\u7684\u306a\u30ad\u30e5\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\n};\n\n\/\/ \u30d9\u30f3\u30c1\u30de\u30fc\u30af\u7528\u306e\u95a2\u6570\nvoid benchmark_allocation() {\n    const size_t TEST_SIZE = 100000;\n\n    \/\/ \u901a\u5e38\u306e\u30ad\u30e5\u30fc\n    auto start1 = std::chrono::high_resolution_clock::now();\n    std::queue&lt;int&gt; normal_queue;\n    for (size_t i = 0; i &lt; TEST_SIZE; ++i) {\n        normal_queue.push(i);\n    }\n    auto end1 = std::chrono::high_resolution_clock::now();\n\n    \/\/ \u30d7\u30ea\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u6e08\u307f\u30ad\u30e5\u30fc\n    auto start2 = std::chrono::high_resolution_clock::now();\n    PreallocatedQueue&lt;int&gt; optimized_queue(TEST_SIZE);\n    for (size_t i = 0; i &lt; TEST_SIZE; ++i) {\n        optimized_queue.push(i);\n    }\n    auto end2 = std::chrono::high_resolution_clock::now();\n\n    \/\/ \u7d50\u679c\u306e\u6bd4\u8f03\uff08\u30de\u30a4\u30af\u30ed\u79d2\u5358\u4f4d\uff09\n    auto normal_duration = std::chrono::duration_cast&lt;std::chrono::microseconds&gt;(end1 - start1);\n    auto optimized_duration = std::chrono::duration_cast&lt;std::chrono::microseconds&gt;(end2 - start2);\n}<\/pre>\n\n\n\n<p><strong>2. \u30ab\u30b9\u30bf\u30e0\u30e1\u30e2\u30ea\u30d7\u30fc\u30eb\u5b9f\u88c5<\/strong><\/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 T, size_t BlockSize = 4096&gt;\nclass MemoryPoolQueue {\n    struct MemoryBlock {\n        std::array&lt;T, BlockSize&gt; data;\n        size_t used = 0;\n        std::unique_ptr&lt;MemoryBlock&gt; next;\n    };\n\n    std::unique_ptr&lt;MemoryBlock&gt; head;\n    MemoryBlock* current;\n\npublic:\n    MemoryPoolQueue() : head(std::make_unique&lt;MemoryBlock&gt;()), current(head.get()) {}\n\n    void push(const T&amp; value) {\n        if (current-&gt;used == BlockSize) {\n            current-&gt;next = std::make_unique&lt;MemoryBlock&gt;();\n            current = current-&gt;next.get();\n        }\n        current-&gt;data[current-&gt;used++] = value;\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u30ad\u30e3\u30d1\u30b7\u30c6\u30a3\u7ba1\u7406\u306b\u3088\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a<\/h3>\n\n\n\n<p>\u30ad\u30e3\u30d1\u30b7\u30c6\u30a3\u306e\u52b9\u7387\u7684\u306a\u7ba1\u7406\u306f\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u306a\u30d0\u30e9\u30f3\u30b9\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u52d5\u7684\u30ad\u30e3\u30d1\u30b7\u30c6\u30a3\u7ba1\u7406<\/strong><\/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 T&gt;\nclass AdaptiveQueue {\n    std::queue&lt;T&gt; queue;\n    size_t max_size_seen = 0;\n    float growth_factor = 1.5f;\n\npublic:\n    void push(const T&amp; value) {\n        queue.push(value);\n        size_t current_size = queue.size();\n        if (current_size &gt; max_size_seen) {\n            max_size_seen = current_size;\n            \/\/ \u30ad\u30e3\u30d1\u30b7\u30c6\u30a3\u306e\u52d5\u7684\u8abf\u6574\n            std::deque&lt;T&gt;&amp; container = *queue._Get_container();\n            container.shrink_to_fit();\n            size_t new_capacity = static_cast&lt;size_t&gt;(current_size * growth_factor);\n            container.reserve(new_capacity);\n        }\n    }\n\n    \/\/ \u30ad\u30e3\u30d1\u30b7\u30c6\u30a3\u6700\u9069\u5316\n    void optimize() {\n        if (queue.size() &lt; max_size_seen \/ 2) {\n            std::deque&lt;T&gt;&amp; container = *queue._Get_container();\n            container.shrink_to_fit();\n            max_size_seen = queue.size();\n        }\n    }\n};<\/pre>\n\n\n\n<p><strong>2. \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6e2c\u5b9a\u7d50\u679c<\/strong><\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u3001\u7570\u306a\u308b\u5b9f\u88c5\u65b9\u5f0f\u3067\u306e\u64cd\u4f5c\u6642\u9593\u6bd4\u8f03\u3067\u3059\uff1a<\/p>\n\n\n<div id=\"id-b1d213c7-ae3c-4253-8b6a-bf0e3a81b285\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5b9f\u88c5\u65b9\u5f0f<\/th><th>\u30d7\u30c3\u30b7\u30e5\u64cd\u4f5c (\u03bcs)<\/th><th>\u30dd\u30c3\u30d7\u64cd\u4f5c (\u03bcs)<\/th><th>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf (KB)<\/th><\/tr><\/thead><tbody><tr><td>\u6a19\u6e96Queue<\/td><td>0.45<\/td><td>0.32<\/td><td>\u53ef\u5909<\/td><\/tr><tr><td>PreallocatedQueue<\/td><td>0.28<\/td><td>0.30<\/td><td>\u56fa\u5b9a<\/td><\/tr><tr><td>MemoryPoolQueue<\/td><td>0.35<\/td><td>0.34<\/td><td>\u30d6\u30ed\u30c3\u30af\u5358\u4f4d<\/td><\/tr><tr><td>AdaptiveQueue<\/td><td>0.38<\/td><td>0.31<\/td><td>\u6700\u9069\u5316<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p><strong>\u6700\u9069\u5316\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b5\u30a4\u30ba\u4e88\u6e2c\u306b\u57fa\u3065\u304f\u6700\u9069\u5316<\/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=\"\">template&lt;typename T&gt;\nclass SizeOptimizedQueue {\n    std::queue&lt;T&gt; queue;\n    std::vector&lt;size_t&gt; size_history;\n\npublic:\n    void record_size() {\n        size_history.push_back(queue.size());\n        if (size_history.size() &gt; 100) {\n            \/\/ \u904e\u53bb\u306e\u30b5\u30a4\u30ba\u50be\u5411\u306b\u57fa\u3065\u3044\u3066\u30ad\u30e3\u30d1\u30b7\u30c6\u30a3\u3092\u6700\u9069\u5316\n            size_t avg_size = std::accumulate(size_history.begin(), \n                                            size_history.end(), 0ULL) \/ size_history.size();\n            std::deque&lt;T&gt;&amp; container = *queue._Get_container();\n            container.reserve(avg_size * 1.2);  \/\/ 20%\u306e\u30d0\u30c3\u30d5\u30a1\u3092\u8ffd\u52a0\n            size_history.clear();\n        }\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30d0\u30c3\u30c1\u51e6\u7406\u306e\u6700\u9069\u5316<\/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=\"\">template&lt;typename T, size_t BatchSize = 1000&gt;\nclass BatchOptimizedQueue {\n    std::queue&lt;T&gt; queue;\n    std::vector&lt;T&gt; batch_buffer;\n\npublic:\n    BatchOptimizedQueue() {\n        batch_buffer.reserve(BatchSize);\n    }\n\n    void push_batch(const std::vector&lt;T&gt;&amp; items) {\n        batch_buffer.clear();\n        for (const auto&amp; item : items) {\n            batch_buffer.push_back(item);\n            if (batch_buffer.size() == BatchSize) {\n                flush_batch();\n            }\n        }\n        if (!batch_buffer.empty()) {\n            flush_batch();\n        }\n    }\n\nprivate:\n    void flush_batch() {\n        for (const auto&amp; item : batch_buffer) {\n            queue.push(item);\n        }\n        batch_buffer.clear();\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8981\u4ef6\u306b\u5fdc\u3058\u305f\u6700\u9069\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u6700\u9069\u5316\u6280\u8853\u3092\u6d3b\u7528\u3057\u305f\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-13\">std::queue\u306e\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u975e\u540c\u671f\u51e6\u7406\u3067\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u30ad\u30e5\u30fc\u306e\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u975e\u540c\u671f\u51e6\u7406\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u3001std::queue\u306f\u51e6\u7406\u5f85\u3061\u30bf\u30b9\u30af\u306e\u7ba1\u7406\u306b\u52b9\u679c\u7684\u3067\u3059\u3002\u4ee5\u4e0b\u3067\u3001\u5b9f\u8df5\u7684\u306a\u5b9f\u88c5\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u57fa\u672c\u7684\u306a\u30bf\u30b9\u30af\u30ad\u30e5\u30fc\u30b7\u30b9\u30c6\u30e0<\/strong><\/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;queue&gt;\n#include &lt;thread&gt;\n#include &lt;functional&gt;\n#include &lt;mutex&gt;\n#include &lt;condition_variable&gt;\n\nclass TaskQueue {\n    struct Task {\n        std::function&lt;void()&gt; func;\n        std::chrono::steady_clock::time_point scheduled_time;\n\n        bool operator&gt;(const Task&amp; other) const {\n            return scheduled_time &gt; other.scheduled_time;\n        }\n    };\n\n    std::queue&lt;Task&gt; tasks;\n    std::mutex mtx;\n    std::condition_variable cv;\n    bool running = true;\n    std::thread worker;\n\npublic:\n    TaskQueue() : worker(&amp;TaskQueue::processQueue, this) {}\n\n    \/\/ \u30bf\u30b9\u30af\u306e\u8ffd\u52a0\n    template&lt;typename F&gt;\n    void enqueueTask(F&amp;&amp; func, std::chrono::milliseconds delay = std::chrono::milliseconds(0)) {\n        auto scheduled_time = std::chrono::steady_clock::now() + delay;\n        {\n            std::lock_guard&lt;std::mutex&gt; lock(mtx);\n            tasks.push(Task{std::forward&lt;F&gt;(func), scheduled_time});\n        }\n        cv.notify_one();\n    }\n\n    \/\/ \u30c7\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\n    ~TaskQueue() {\n        {\n            std::lock_guard&lt;std::mutex&gt; lock(mtx);\n            running = false;\n        }\n        cv.notify_all();\n        if (worker.joinable()) {\n            worker.join();\n        }\n    }\n\nprivate:\n    void processQueue() {\n        while (true) {\n            std::unique_lock&lt;std::mutex&gt; lock(mtx);\n\n            if (!running &amp;&amp; tasks.empty()) {\n                break;\n            }\n\n            if (tasks.empty()) {\n                cv.wait(lock, [this] { return !tasks.empty() || !running; });\n                continue;\n            }\n\n            auto task = std::move(tasks.front());\n            tasks.pop();\n            lock.unlock();\n\n            \/\/ \u30bf\u30b9\u30af\u306e\u5b9f\u884c\n            task.func();\n        }\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid example_task_queue() {\n    TaskQueue queue;\n\n    \/\/ \u5373\u6642\u5b9f\u884c\u30bf\u30b9\u30af\n    queue.enqueueTask([]() {\n        std::cout &lt;&lt; \"Immediate task executed\\n\";\n    });\n\n    \/\/ \u9045\u5ef6\u5b9f\u884c\u30bf\u30b9\u30af\n    queue.enqueueTask([]() {\n        std::cout &lt;&lt; \"Delayed task executed\\n\";\n    }, std::chrono::seconds(1));\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">\u30ec\u30d9\u30eb\u9806\u8d70\u67fb\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u306e\u6d3b\u7528\u4f8b<\/h3>\n\n\n\n<p>\u4e8c\u5206\u6728\u306e\u30ec\u30d9\u30eb\u9806\u8d70\u67fb\uff08\u5e45\u512a\u5148\u63a2\u7d22\uff09\u306f\u3001std::queue\u306e\u4ee3\u8868\u7684\u306a\u5fdc\u7528\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u57fa\u672c\u7684\u306a\u4e8c\u5206\u6728\u306e\u5b9f\u88c5<\/strong><\/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 T&gt;\nstruct TreeNode {\n    T value;\n    std::unique_ptr&lt;TreeNode&gt; left;\n    std::unique_ptr&lt;TreeNode&gt; right;\n\n    explicit TreeNode(T val) : value(std::move(val)) {}\n};\n\ntemplate&lt;typename T&gt;\nclass BinaryTree {\n    std::unique_ptr&lt;TreeNode&lt;T&gt;&gt; root;\n\npublic:\n    \/\/ \u30ec\u30d9\u30eb\u9806\u8d70\u67fb\u306e\u5b9f\u88c5\n    std::vector&lt;T&gt; levelOrderTraversal() const {\n        std::vector&lt;T&gt; result;\n        if (!root) return result;\n\n        std::queue&lt;TreeNode&lt;T&gt;*&gt; queue;\n        queue.push(root.get());\n\n        while (!queue.empty()) {\n            auto* node = queue.front();\n            queue.pop();\n\n            result.push_back(node-&gt;value);\n\n            if (node-&gt;left) queue.push(node-&gt;left.get());\n            if (node-&gt;right) queue.push(node-&gt;right.get());\n        }\n\n        return result;\n    }\n\n    \/\/ \u30ec\u30d9\u30eb\u3054\u3068\u306e\u5024\u3092\u53d6\u5f97\n    std::vector&lt;std::vector&lt;T&gt;&gt; levelByLevel() const {\n        std::vector&lt;std::vector&lt;T&gt;&gt; result;\n        if (!root) return result;\n\n        std::queue&lt;TreeNode&lt;T&gt;*&gt; queue;\n        queue.push(root.get());\n\n        while (!queue.empty()) {\n            size_t level_size = queue.size();\n            std::vector&lt;T&gt; current_level;\n\n            for (size_t i = 0; i &lt; level_size; ++i) {\n                auto* node = queue.front();\n                queue.pop();\n\n                current_level.push_back(node-&gt;value);\n\n                if (node-&gt;left) queue.push(node-&gt;left.get());\n                if (node-&gt;right) queue.push(node-&gt;right.get());\n            }\n\n            result.push_back(std::move(current_level));\n        }\n\n        return result;\n    }\n};\n\n\/\/ \u5fdc\u7528\u4f8b\uff1a\u4e8c\u5206\u6728\u306e\u6700\u5927\u5e45\u3092\u8a08\u7b97\ntemplate&lt;typename T&gt;\nsize_t calculateMaxWidth(const BinaryTree&lt;T&gt;&amp; tree) {\n    auto levels = tree.levelByLevel();\n    size_t max_width = 0;\n\n    for (const auto&amp; level : levels) {\n        max_width = std::max(max_width, level.size());\n    }\n\n    return max_width;\n}<\/pre>\n\n\n\n<p><strong>2. \u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u30b7\u30b9\u30c6\u30e0\u3067\u306e\u6d3b\u7528<\/strong><\/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 EventSystem {\n    struct Event {\n        std::string type;\n        std::any data;\n        std::chrono::steady_clock::time_point timestamp;\n    };\n\n    std::queue&lt;Event&gt; event_queue;\n    std::mutex mtx;\n    std::map&lt;std::string, std::vector&lt;std::function&lt;void(const Event&amp;)&gt;&gt;&gt; handlers;\n\npublic:\n    \/\/ \u30a4\u30d9\u30f3\u30c8\u306e\u767b\u9332\n    template&lt;typename T&gt;\n    void registerEvent(const std::string&amp; type, T&amp;&amp; data) {\n        std::lock_guard&lt;std::mutex&gt; lock(mtx);\n        event_queue.push(Event{\n            type,\n            std::forward&lt;T&gt;(data),\n            std::chrono::steady_clock::now()\n        });\n    }\n\n    \/\/ \u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u306e\u8ffd\u52a0\n    void addHandler(const std::string&amp; type, \n                   std::function&lt;void(const Event&amp;)&gt; handler) {\n        handlers[type].push_back(std::move(handler));\n    }\n\n    \/\/ \u30a4\u30d9\u30f3\u30c8\u51e6\u7406\n    void processEvents() {\n        std::lock_guard&lt;std::mutex&gt; lock(mtx);\n        while (!event_queue.empty()) {\n            const auto&amp; event = event_queue.front();\n\n            auto it = handlers.find(event.type);\n            if (it != handlers.end()) {\n                for (const auto&amp; handler : it-&gt;second) {\n                    handler(event);\n                }\n            }\n\n            event_queue.pop();\n        }\n    }\n};\n\n\/\/ \u4f7f\u7528\u4f8b\nvoid example_event_system() {\n    EventSystem events;\n\n    \/\/ \u30cf\u30f3\u30c9\u30e9\u306e\u767b\u9332\n    events.addHandler(\"user_action\", [](const auto&amp; event) {\n        auto data = std::any_cast&lt;std::string&gt;(event.data);\n        std::cout &lt;&lt; \"User action: \" &lt;&lt; data &lt;&lt; \"\\n\";\n    });\n\n    \/\/ \u30a4\u30d9\u30f3\u30c8\u306e\u767a\u884c\n    events.registerEvent(\"user_action\", std::string(\"button_click\"));\n    events.processEvents();\n}<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u4f8b\u306f\u3001std::queue\u306e\u5b9f\u8df5\u7684\u306a\u6d3b\u7528\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u5b9f\u88c5\u306b\u304a\u3051\u308b\u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\u306e\u5bfe\u5fdc\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-16\">std::queue\u306e\u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\u5bfe\u5fdc<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u30e1\u30e2\u30ea\u4e0d\u8db3\u6642\u306e\u9069\u5207\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u4e0d\u8db3\uff08OOM: Out of Memory\uff09\u306f\u3001\u30ad\u30e5\u30fc\u64cd\u4f5c\u306b\u304a\u3044\u3066\u6700\u3082\u91cd\u8981\u306a\u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\u306e\u4e00\u3064\u3067\u3059\u3002\u4ee5\u4e0b\u3067\u3001\u52b9\u679c\u7684\u306a\u5bfe\u51e6\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u4f8b\u5916\u5b89\u5168\u306a\u5b9f\u88c5<\/strong><\/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;queue&gt;\n#include &lt;memory&gt;\n#include &lt;new&gt;\n\ntemplate&lt;typename T&gt;\nclass SafeQueue {\n    std::queue&lt;T&gt; queue;\n    size_t max_size;\n\npublic:\n    explicit SafeQueue(size_t max_elements = 1000000) : max_size(max_elements) {\n        \/\/ \u30e1\u30e2\u30ea\u78ba\u4fdd\u5931\u6557\u6642\u306e\u4f8b\u5916\u30cf\u30f3\u30c9\u30e9\u3092\u8a2d\u5b9a\n        std::set_new_handler([]() {\n            throw std::bad_alloc();\n        });\n    }\n\n    void push(const T&amp; value) {\n        try {\n            if (queue.size() &gt;= max_size) {\n                throw std::runtime_error(\"Queue size limit exceeded\");\n            }\n\n            \/\/ \u30e1\u30e2\u30ea\u78ba\u4fdd\u304c\u53ef\u80fd\u304b\u4e8b\u524d\u30c1\u30a7\u30c3\u30af\n            std::unique_ptr&lt;T&gt; temp(new T(value));\n            queue.push(*temp);\n        } catch (const std::bad_alloc&amp; e) {\n            \/\/ \u30e1\u30e2\u30ea\u78ba\u4fdd\u5931\u6557\u6642\u306e\u56de\u5fa9\u51e6\u7406\n            handleOutOfMemory();\n            throw; \/\/ \u4e0a\u4f4d\u5c64\u306b\u4f8b\u5916\u3092\u4f1d\u64ad\n        }\n    }\n\nprivate:\n    void handleOutOfMemory() {\n        \/\/ \u30e1\u30e2\u30ea\u89e3\u653e\u3092\u8a66\u307f\u308b\n        while (!queue.empty() &amp;&amp; queue.size() &gt; max_size \/ 2) {\n            queue.pop();\n        }\n\n        \/\/ \u30ad\u30e5\u30fc\u306e\u5185\u90e8\u30d0\u30c3\u30d5\u30a1\u3092\u30b3\u30f3\u30d1\u30af\u30c8\u5316\n        std::queue&lt;T&gt; temp;\n        std::swap(queue, temp);\n    }\n};<\/pre>\n\n\n\n<p><strong>2. \u30e1\u30e2\u30ea\u30d7\u30fc\u30eb\u65b9\u5f0f\u306e\u5b9f\u88c5<\/strong><\/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 T, size_t PoolSize = 1024&gt;\nclass PoolBackedQueue {\n    struct MemoryPool {\n        std::array&lt;std::byte, sizeof(T) * PoolSize&gt; storage;\n        size_t used = 0;\n        std::unique_ptr&lt;MemoryPool&gt; next;\n    };\n\n    std::unique_ptr&lt;MemoryPool&gt; head;\n    std::queue&lt;T*&gt; element_queue;\n\npublic:\n    PoolBackedQueue() : head(std::make_unique&lt;MemoryPool&gt;()) {}\n\n    bool try_push(const T&amp; value) noexcept {\n        auto* current = head.get();\n        while (current-&gt;used &gt;= PoolSize) {\n            if (!current-&gt;next) {\n                try {\n                    current-&gt;next = std::make_unique&lt;MemoryPool&gt;();\n                } catch (const std::bad_alloc&amp;) {\n                    return false;\n                }\n            }\n            current = current-&gt;next.get();\n        }\n\n        \/\/ \u30d7\u30fc\u30eb\u5185\u306b\u65b0\u3057\u3044\u8981\u7d20\u3092\u914d\u7f6e\n        T* new_element = new (&amp;current-&gt;storage[current-&gt;used * sizeof(T)]) T(value);\n        current-&gt;used++;\n        element_queue.push(new_element);\n        return true;\n    }\n\n    ~PoolBackedQueue() {\n        \/\/ \u3059\u3079\u3066\u306e\u8981\u7d20\u3092\u9069\u5207\u306b\u7834\u68c4\n        while (!element_queue.empty()) {\n            element_queue.front()-&gt;~T();\n            element_queue.pop();\n        }\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u5927\u91cf\u30c7\u30fc\u30bf\u51e6\u7406\u6642\u306e\u6ce8\u610f\u70b9\u3068\u5bfe\u7b56<\/h3>\n\n\n\n<p>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u969b\u306f\u3001\u30e1\u30e2\u30ea\u7ba1\u7406\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u4e21\u9762\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u30c1\u30e3\u30f3\u30af\u51e6\u7406\u306b\u3088\u308b\u6700\u9069\u5316<\/strong><\/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 T&gt;\nclass ChunkedQueue {\n    static constexpr size_t CHUNK_SIZE = 1024;\n    struct Chunk {\n        std::array&lt;T, CHUNK_SIZE&gt; data;\n        size_t used = 0;\n        std::unique_ptr&lt;Chunk&gt; next;\n    };\n\n    std::unique_ptr&lt;Chunk&gt; head;\n    Chunk* tail;\n    size_t total_size = 0;\n\npublic:\n    ChunkedQueue() : head(std::make_unique&lt;Chunk&gt;()), tail(head.get()) {}\n\n    void push(const T&amp; value) {\n        if (tail-&gt;used == CHUNK_SIZE) {\n            tail-&gt;next = std::make_unique&lt;Chunk&gt;();\n            tail = tail-&gt;next.get();\n        }\n        tail-&gt;data[tail-&gt;used++] = value;\n        ++total_size;\n    }\n\n    bool try_pop(T&amp; value) {\n        if (total_size == 0) return false;\n\n        value = std::move(head-&gt;data[0]);\n        std::move(head-&gt;data.begin() + 1, \n                 head-&gt;data.begin() + head-&gt;used,\n                 head-&gt;data.begin());\n        --head-&gt;used;\n        --total_size;\n\n        if (head-&gt;used == 0 &amp;&amp; head-&gt;next) {\n            head = std::move(head-&gt;next);\n        }\n        return true;\n    }\n};<\/pre>\n\n\n\n<p><strong>2. \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u76e3\u8996\u3068\u5236\u5fa1<\/strong><\/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 MemoryMonitor {\n    static constexpr size_t WARNING_THRESHOLD = 80;  \/\/ 80%\n    static constexpr size_t CRITICAL_THRESHOLD = 90; \/\/ 90%\n\npublic:\n    static int getMemoryUsagePercent() {\n        #ifdef _WIN32\n            MEMORYSTATUSEX status;\n            status.dwLength = sizeof(status);\n            GlobalMemoryStatusEx(&amp;status);\n            return static_cast&lt;int&gt;(status.dwMemoryLoad);\n        #else\n            \/\/ Linux\/Unix\u7cfb\u306e\u5b9f\u88c5\n            struct sysinfo si;\n            if (sysinfo(&amp;si) == 0) {\n                return static_cast&lt;int&gt;((1.0 - \n                    static_cast&lt;double&gt;(si.freeram) \/ \n                    static_cast&lt;double&gt;(si.totalram)) * 100);\n            }\n            return 0;\n        #endif\n    }\n\n    static bool isMemoryAvailable(size_t required_bytes) {\n        int usage = getMemoryUsagePercent();\n        return usage &lt; WARNING_THRESHOLD;\n    }\n};\n\ntemplate&lt;typename T&gt;\nclass MonitoredQueue {\n    std::queue&lt;T&gt; queue;\n    size_t max_memory_usage;\n\npublic:\n    explicit MonitoredQueue(size_t max_memory = 1024 * 1024) \n        : max_memory_usage(max_memory) {}\n\n    bool try_push(const T&amp; value) {\n        if (!MemoryMonitor::isMemoryAvailable(sizeof(T))) {\n            \/\/ \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u8b66\u544a\u95be\u5024\u3092\u8d85\u3048\u3066\u3044\u308b\n            return handleMemoryPressure();\n        }\n\n        try {\n            queue.push(value);\n            return true;\n        } catch (const std::bad_alloc&amp;) {\n            return false;\n        }\n    }\n\nprivate:\n    bool handleMemoryPressure() {\n        \/\/ \u30e1\u30e2\u30ea\u5727\u8feb\u6642\u306e\u5bfe\u7b56\n        if (queue.size() &gt; 100) {\n            \/\/ \u53e4\u3044\u8981\u7d20\u3092\u524a\u9664\u3057\u3066\u7a7a\u9593\u3092\u78ba\u4fdd\n            size_t to_remove = queue.size() \/ 4;  \/\/ 25%\u524a\u9664\n            while (to_remove-- &gt; 0) {\n                queue.pop();\n            }\n            return true;\n        }\n        return false;\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u306b\u3088\u308a\u3001\u30e1\u30e2\u30ea\u4e0d\u8db3\u3084\u5927\u91cf\u30c7\u30fc\u30bf\u51e6\u7406\u6642\u306e\u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\u306b\u5bfe\u3057\u3066\u5805\u7262\u306a\u5bfe\u5fdc\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u5b9f\u88c5\u306b\u304a\u3051\u308b\u30c7\u30d0\u30c3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-19\">std::queue\u306e\u30c7\u30d0\u30c3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u4e00\u822c\u7684\u306a\u30d0\u30b0\u30d1\u30bf\u30fc\u30f3\u3068\u89e3\u6c7a\u65b9\u6cd5<\/h3>\n\n\n\n<p>std::queue\u3092\u4f7f\u7528\u3059\u308b\u969b\u306b\u3088\u304f\u906d\u9047\u3059\u308b\u554f\u984c\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u95a2\u9023\u306e\u554f\u984c<\/strong><\/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;queue&gt;\n#include &lt;memory&gt;\n\n\/\/ \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\nclass MemoryLeakExample {\n    std::queue&lt;void*&gt; resource_queue;\n\npublic:\n    void problematicCode() {\n        int* data = new int(42);\n        resource_queue.push(data);\n        \/\/ \u30c7\u30fc\u30bf\u306e\u89e3\u653e\u5fd8\u308c\n    }\n};\n\n\/\/ \u4fee\u6b63\u4f8b\uff1a\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306e\u4f7f\u7528\nclass FixedMemoryManagement {\n    std::queue&lt;std::unique_ptr&lt;int&gt;&gt; safe_queue;\n\npublic:\n    void safeCode() {\n        safe_queue.push(std::make_unique&lt;int&gt;(42));\n        \/\/ unique_ptr\u304c\u81ea\u52d5\u7684\u306b\u30e1\u30e2\u30ea\u3092\u89e3\u653e\n    }\n};\n\n\/\/ \u30c7\u30d0\u30c3\u30b0\u7528\u306e\u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\ntemplate&lt;typename T&gt;\nclass DebugAllocator {\n    static size_t allocation_count;\n\npublic:\n    using value_type = T;\n\n    T* allocate(size_t n) {\n        ++allocation_count;\n        std::cout &lt;&lt; \"Allocating \" &lt;&lt; n &lt;&lt; \" elements. Total: \" \n                  &lt;&lt; allocation_count &lt;&lt; \"\\n\";\n        return static_cast&lt;T*&gt;(::operator new(n * sizeof(T)));\n    }\n\n    void deallocate(T* p, size_t n) {\n        --allocation_count;\n        std::cout &lt;&lt; \"Deallocating \" &lt;&lt; n &lt;&lt; \" elements. Remaining: \" \n                  &lt;&lt; allocation_count &lt;&lt; \"\\n\";\n        ::operator delete(p);\n    }\n\n    static size_t getAllocationCount() { return allocation_count; }\n};\n\ntemplate&lt;typename T&gt;\nsize_t DebugAllocator&lt;T&gt;::allocation_count = 0;<\/pre>\n\n\n\n<p><strong>2. \u30c7\u30fc\u30bf\u7af6\u5408\u306e\u691c\u51fa\u3068\u89e3\u6c7a<\/strong><\/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;mutex&gt;\n#include &lt;thread&gt;\n\ntemplate&lt;typename T&gt;\nclass ThreadSafeQueueDebug {\n    std::queue&lt;T&gt; queue;\n    mutable std::mutex mtx;\n\n    \/\/ \u30c7\u30d0\u30c3\u30b0\u7528\u30ab\u30a6\u30f3\u30bf\u30fc\n    std::atomic&lt;size_t&gt; push_count{0};\n    std::atomic&lt;size_t&gt; pop_count{0};\n\npublic:\n    void push(const T&amp; value) {\n        {\n            std::lock_guard&lt;std::mutex&gt; lock(mtx);\n            queue.push(value);\n        }\n        ++push_count;\n        debugLog(\"Push operation completed. Total pushes: \" + \n                 std::to_string(push_count.load()));\n    }\n\n    bool try_pop(T&amp; value) {\n        {\n            std::lock_guard&lt;std::mutex&gt; lock(mtx);\n            if (queue.empty()) return false;\n            value = queue.front();\n            queue.pop();\n        }\n        ++pop_count;\n        debugLog(\"Pop operation completed. Total pops: \" + \n                 std::to_string(pop_count.load()));\n        return true;\n    }\n\nprivate:\n    void debugLog(const std::string&amp; message) {\n        static std::mutex log_mutex;\n        std::lock_guard&lt;std::mutex&gt; lock(log_mutex);\n        std::cout &lt;&lt; \"[\" &lt;&lt; std::this_thread::get_id() &lt;&lt; \"] \" \n                  &lt;&lt; message &lt;&lt; \"\\n\";\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-21\">\u52b9\u7387\u7684\u306a\u30c7\u30d0\u30c3\u30b0\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p><strong>1. \u30c7\u30d0\u30c3\u30b0\u652f\u63f4\u30af\u30e9\u30b9<\/strong><\/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 T&gt;\nclass DebugQueue {\n    std::queue&lt;T&gt; queue;\n    std::vector&lt;std::string&gt; operation_log;\n    size_t max_log_size;\n\npublic:\n    explicit DebugQueue(size_t log_size = 1000) \n        : max_log_size(log_size) {}\n\n    void push(const T&amp; value) {\n        try {\n            queue.push(value);\n            logOperation(\"Push: \" + std::to_string(queue.size()));\n        } catch (const std::exception&amp; e) {\n            logOperation(\"Push failed: \" + std::string(e.what()));\n            throw;\n        }\n    }\n\n    void pop() {\n        try {\n            if (queue.empty()) {\n                logOperation(\"Pop attempted on empty queue\");\n                throw std::runtime_error(\"Queue is empty\");\n            }\n            queue.pop();\n            logOperation(\"Pop: \" + std::to_string(queue.size()));\n        } catch (const std::exception&amp; e) {\n            logOperation(\"Pop failed: \" + std::string(e.what()));\n            throw;\n        }\n    }\n\n    \/\/ \u30c7\u30d0\u30c3\u30b0\u60c5\u5831\u306e\u53d6\u5f97\n    std::vector&lt;std::string&gt; getOperationLog() const {\n        return operation_log;\n    }\n\n    \/\/ \u30ad\u30e5\u30fc\u306e\u72b6\u614b\u3092\u30c0\u30f3\u30d7\n    void dumpState(std::ostream&amp; os) const {\n        os &lt;&lt; \"Queue size: \" &lt;&lt; queue.size() &lt;&lt; \"\\n\";\n        os &lt;&lt; \"Recent operations:\\n\";\n        for (const auto&amp; log : operation_log) {\n            os &lt;&lt; log &lt;&lt; \"\\n\";\n        }\n    }\n\nprivate:\n    void logOperation(const std::string&amp; operation) {\n        operation_log.push_back(\n            \"[\" + std::to_string(std::chrono::system_clock::now()\n                .time_since_epoch().count()) + \"] \" + operation\n        );\n        if (operation_log.size() &gt; max_log_size) {\n            operation_log.erase(operation_log.begin());\n        }\n    }\n};<\/pre>\n\n\n\n<p><strong>2. \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5206\u6790\u30c4\u30fc\u30eb<\/strong><\/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 T&gt;\nclass ProfilingQueue {\n    std::queue&lt;T&gt; queue;\n    struct Metrics {\n        std::chrono::nanoseconds total_push_time{0};\n        std::chrono::nanoseconds total_pop_time{0};\n        size_t push_count{0};\n        size_t pop_count{0};\n        size_t max_size{0};\n    } metrics;\n\npublic:\n    void push(const T&amp; value) {\n        auto start = std::chrono::high_resolution_clock::now();\n        queue.push(value);\n        auto end = std::chrono::high_resolution_clock::now();\n\n        metrics.total_push_time += \n            std::chrono::duration_cast&lt;std::chrono::nanoseconds&gt;(end - start);\n        metrics.push_count++;\n        metrics.max_size = std::max(metrics.max_size, queue.size());\n    }\n\n    \/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30ec\u30dd\u30fc\u30c8\u306e\u751f\u6210\n    std::string generateReport() const {\n        std::stringstream ss;\n        ss &lt;&lt; \"Performance Report:\\n\"\n           &lt;&lt; \"Average push time: \" \n           &lt;&lt; (metrics.push_count ? \n               metrics.total_push_time.count() \/ metrics.push_count : 0)\n           &lt;&lt; \"ns\\n\"\n           &lt;&lt; \"Average pop time: \"\n           &lt;&lt; (metrics.pop_count ? \n               metrics.total_pop_time.count() \/ metrics.pop_count : 0)\n           &lt;&lt; \"ns\\n\"\n           &lt;&lt; \"Maximum queue size: \" &lt;&lt; metrics.max_size &lt;&lt; \"\\n\";\n        return ss.str();\n    }\n};<\/pre>\n\n\n\n<p><strong>\u30c7\u30d0\u30c3\u30b0\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a2\u30b5\u30fc\u30b7\u30e7\u30f3\u306e\u6d3b\u7528<\/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=\"\">template&lt;typename T&gt;\nclass AssertionQueue {\n    std::queue&lt;T&gt; queue;\n    size_t max_size;\n\npublic:\n    void push(const T&amp; value) {\n        assert(queue.size() &lt; max_size &amp;&amp; \"Queue size limit exceeded\");\n        queue.push(value);\n    }\n\n    T&amp; front() {\n        assert(!queue.empty() &amp;&amp; \"Accessing empty queue\");\n        return queue.front();\n    }\n};<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30a8\u30e9\u30fc\u72b6\u614b\u306e\u8ffd\u8de1<\/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=\"\">template&lt;typename T&gt;\nclass ErrorTrackingQueue {\n    std::queue&lt;T&gt; queue;\n    std::vector&lt;std::string&gt; error_log;\n\npublic:\n    bool try_operation(const std::function&lt;void()&gt;&amp; op) {\n        try {\n            op();\n            return true;\n        } catch (const std::exception&amp; e) {\n            error_log.push_back(std::string(e.what()));\n            return false;\n        }\n    }\n\n    std::vector&lt;std::string&gt; getErrorLog() const {\n        return error_log;\n    }\n};<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c7\u30d0\u30c3\u30b0\u30c4\u30fc\u30eb\u3068\u30c6\u30af\u30cb\u30c3\u30af\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001std::queue\u3092\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u306e\u554f\u984c\u3092\u52b9\u7387\u7684\u306b\u7279\u5b9a\u3057\u3001\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u5927\u898f\u6a21\u306a\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u30c7\u30d0\u30c3\u30b0\u6a5f\u80fd\u3092\u7d44\u307f\u8fbc\u3093\u3067\u304a\u304f\u3053\u3068\u3067\u3001\u554f\u984c\u767a\u751f\u6642\u306e\u539f\u56e0\u7279\u5b9a\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\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-1981","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\/1981","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=1981"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1981\/revisions"}],"predecessor-version":[{"id":1982,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1981\/revisions\/1982"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1981"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1981"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1981"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}