{"id":4375,"date":"2026-10-17T16:53:19","date_gmt":"2026-10-17T08:53:19","guid":{"rendered":"https:\/\/saludpcb.com\/zh\/?p=4375"},"modified":"2026-10-17T16:53:19","modified_gmt":"2026-10-17T08:53:19","slug":"embedded-c-memory-optimization","status":"publish","type":"post","link":"https:\/\/saludpcb.com\/zh\/embedded-c-memory-optimization\/","title":{"rendered":"2026 Embedded C++ Memory Optimization | \u5d4c\u5165\u5f0f C++ \u8a18\u61b6\u9ad4\u512a\u5316\u5be6\u6230"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-alpha-channel-opacity alignwide has-text-color has-palette-color-1-color has-palette-color-1-background-color has-background is-style-wide\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Embedded C++ Memory Optimization\uff08\u5d4c\u5165\u5f0f C++ \u8a18\u61b6\u9ad4\u512a\u5316\uff09<\/strong>\u662f <a href=\"https:\/\/saludpcb.com\/zh\/premium-cpp-vscode-setup-guide\/\">C++ <\/a>\u80fd\u5426\u7a69\u5b9a\u8d70\u4e0a MCU \u7684\u6c7a\u52dd\u5c40\uff1a\u684c\u9762\u7aef\u958b\u767c\u300cnew \u4e0d\u5920\u5c31\u64f4\u5145\u7cfb\u7d71\u5806\uff08Heap\uff09\u300d\u7684\u76f4\u89ba\uff0c\u5728 ESP32 \u6216 STM32 \u50c5\u6709\u5e7e\u767e KB SRAM \u7684\u786c\u9ad4\u74b0\u5883\u88e1\u662f\u707d\u96e3\u914d\u65b9\u2014\u2014\u5806\u7a4d\u788e\u7247\u5316\uff08Heap Fragmentation\uff09\u6703\u8b93\u300c\u660e\u660e\u7e3d\u5269\u9918\u5bb9\u91cf\u5920\u300d\u7684\u5373\u6642\u7cfb\u7d71\u5728\u904b\u884c\u7b2c\u4e09\u5929\u51cc\u6668\u7a81\u7136\u5206\u914d\u5931\u6557\u4e26\u5d29\u6f70\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56de\u60f3\u6211\u5011\u521d\u5b78\u5d4c\u5165\u5f0f C++ \u97cc\u9ad4\u958b\u767c\u6642\u7684\u5169\u500b\u6975\u7aef\uff1a\u4e00\u6d3e\u8a8d\u70ba\u300cC++ \u592a\u80a5\uff0c\u5805\u6301\u7d14\u7528 C \u8a9e\u8a00\u300d\uff0c\u53e6\u4e00\u6d3e\u5247\u7167\u642c\u684c\u9762\u7aef\u5beb\u6cd5\u3001\u5728\u4e3b\u8ff4\u5708\u8207\u4e2d\u65b7\u670d\u52d9\u5e38\u5f0f\u4e2d\u5230\u8655\u52d5\u614b\u547c\u53eb new\u3001std::vector \u8207 std::string\u3002\u771f\u76f8\u5176\u5be6\u5728\u4e2d\u9593\u2014\u2014<strong>C++ \u7684\u57f7\u884c\u671f\u6210\u672c\u5b8c\u5168\u96c6\u4e2d\u5728\u300c\u4f60\u9078\u7528\u4e86\u4ec0\u9ebc\u8a9e\u8a00\u7279\u6027\u300d\uff0c\u800c\u975e\u8a9e\u8a00\u672c\u8eab<\/strong>\uff1a\u6a21\u677f\uff08Templates\uff09\u96f6\u958b\u92b7\u3001\u985e\u5225\u5c01\u88dd\uff08Classes\uff09\u96f6\u958b\u92b7\u3001constexpr \u7de8\u8b6f\u671f\u8a08\u7b97\u96f6\u958b\u92b7\uff0c\u53ea\u6709\u865b\u64ec\u51fd\u5f0f\uff08Virtual Functions\uff09\u8207\u7570\u5e38\u8655\u7406\uff08Exceptions\uff09\u624d\u9700\u8981\u984d\u5916\u8a08\u50f9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u4f60\u7684 MCU \u97cc\u9ad4\u9084\u5728\u57f7\u884c\u671f\u96a8\u624b\u547c\u53eb new\uff0c\u90a3\u9019\u7bc7 <strong>Embedded C++ Memory Optimization<\/strong> \u5be6\u6230\u6307\u5357\u5c31\u662f\u70ba\u4f60\u6e96\u5099\u7684\u3002\u6211\u5011\u5c07\u4e00\u6b65\u6b65\u5efa\u7acb\u300c\u975c\u614b\u512a\u5148\u3001\u68e7\u6b21\u4e4b\u3001\u6c60\u5316\u515c\u5e95\u300d\u7684\u8a18\u61b6\u9ad4\u5206\u914d\u7b56\u7565\uff0c\u4e26\u7b97\u6e05 RTTI \u8207\u7570\u5e38\u6a5f\u5236\u7684\u53d6\u6368\u5e33\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"714\" src=\"https:\/\/saludpcb.com\/zh\/wp-content\/uploads\/2026\/10\/2026-The-Ultimate-Embedded-C-Memory-Optimization-Guide-Best-MCU-Performance-Practices-1.jpg\" alt=\"Embedded C++ Memory Optimization\" class=\"wp-image-4379\" title=\"\" srcset=\"https:\/\/saludpcb.com\/zh\/wp-content\/uploads\/2026\/10\/2026-The-Ultimate-Embedded-C-Memory-Optimization-Guide-Best-MCU-Performance-Practices-1.jpg 1280w, https:\/\/saludpcb.com\/zh\/wp-content\/uploads\/2026\/10\/2026-The-Ultimate-Embedded-C-Memory-Optimization-Guide-Best-MCU-Performance-Practices-1-767x428.jpg 767w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>\u5167\u5bb9<\/h2><nav><ul><li class=\"\"><a href=\"#\u5d4c\u5165\u5f0f-c-\u8a18\u61b6\u9ad4\u7684\u56db\u5927\u7d04\u675f\">Embedded C++ Memory Optimization \u7684\u56db\u5927\u786c\u9ad4\u7d04\u675f<\/a><\/li><li class=\"\"><a href=\"#\u57f7\u884c\u671f-new-\u5f88\u65b9\u4fbf\u7684-bad-smell\">\u300c\u57f7\u884c\u671f new \u5f88\u65b9\u4fbf\u300d\u7684 Bad Smell<\/a><\/li><li class=\"\"><a href=\"#\u5206\u914d\u91d1\u5b57\u5854\u975c\u614b-\u68e7-\u6c60\">\u5206\u914d\u91d1\u5b57\u5854\uff1a\u975c\u614b \u2192 \u68e7 \u2192 \u6c60<\/a><\/li><li class=\"\"><a href=\"#placement-new-\u8207\u8a18\u61b6\u9ad4\u6c60\u5be6\u4f5c\">Placement New \u8207\u8a18\u61b6\u9ad4\u6c60\u5be6\u4f5c<\/a><\/li><li class=\"\"><a href=\"#rtti-\u8207\u7570\u5e38\u7684\u53d6\u6368\u5e33\">RTTI \u8207\u7570\u5e38\u7684\u53d6\u6368\u5e33<\/a><\/li><li class=\"\"><a href=\"#\u5be6\u6230\u5fc3\u6cd5\">\u5be6\u6230\u5fc3\u6cd5<\/a><\/li><li class=\"\"><a href=\"#\u7d50\u8ad6\">\u7d50\u8ad6<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 id=\"\u5d4c\u5165\u5f0f-c-\u8a18\u61b6\u9ad4\u7684\u56db\u5927\u7d04\u675f\" class=\"wp-block-heading\">Embedded C++ Memory Optimization \u7684\u56db\u5927\u786c\u9ad4\u7d04\u675f<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7e3d\u91cf\u6975\u5c0f\uff08Limited SRAM\uff09<\/strong>\u2014\u2014\u4ee5 ESP32-S3 \u70ba\u4f8b\uff0c\u5167\u5efa SRAM \u7d04 512 KB\uff0c\u6263\u6389 FreeRTOS \u7cfb\u7d71\u68e7\u3001Wi-Fi \u8207 BLE \u85cd\u7259\u5354\u5b9a\u68e7\u7de9\u885d\u5340\u5f8c\uff0c\u61c9\u7528\u7a0b\u5f0f\u5be6\u969b\u53ef\u7528\u7684\u5167\u90e8 RAM \u5f80\u5f80\u53ea\u5269\u4e00\u534a\u5de6\u53f3\u2014\u2014\u684c\u9762\u601d\u7dad\u7684\u300c\u5148 new \u518d\u8aaa\u300d\u6703\u76f4\u63a5\u649e\u7246\u3002<\/li>\n\n\n\n<li><strong>\u904b\u884c\u58fd\u547d\u9577\uff0824\/7 Long Uptime\uff09<\/strong>\u2014\u2014\u5de5\u696d\u8207\u7269\u806f\u7db2\u97cc\u9ad4\u52d5\u8f12 7\u00d724 \u5c0f\u6642\u9023\u7e8c\u8dd1\u4e0a\u4e00\u5e74\uff0c\u4efb\u4f55\u300c\u5076\u723e\u6d29\u6f0f\u5e7e Bytes\u300d\u7684\u5fae\u5c0f Memory Leak \u8a2d\u8a08\u90fd\u6703\u7d2f\u7a4d\u6210\u707d\u2014\u2014\u684c\u9762\u8edf\u9ad4\u5361\u9813\u53ef\u4ee5\u624b\u52d5\u91cd\u555f\uff0c\u5d4c\u5165\u5f0f\u8a2d\u5099\u91cd\u555f\u5c31\u662f\u73fe\u5834\u4e8b\u6545\u3002<\/li>\n\n\n\n<li><strong>\u788e\u7247\u5316\u4e0d\u53ef\u9006\uff08Heap Fragmentation\uff09<\/strong>\u2014\u2014\u983b\u7e41\u4e14\u5927\u5c0f\u4e0d\u4e00\u7684\u52d5\u614b\u5206\u914d\u8207\u91cb\u653e\uff08malloc \/ free \/ new \/ delete\uff09\u6703\u628a\u7cfb\u7d71\u5806\u5207\u6210\u745e\u58eb\u4e73\u916a\u822c\u7684\u788e\u7247\uff1a\u5373\u4f7f\u7e3d\u5269\u9918\u7a7a\u9593\u8db3\u5920\uff0c\u53ea\u8981\u627e\u4e0d\u5230\u5920\u5927\u7684\u300c\u9023\u7e8c\u8a18\u61b6\u9ad4\u584a\u300d\uff0c\u5206\u914d\u7167\u6a23\u56de\u50b3 nullptr \u5931\u6557\u2014\u2014\u9019\u662f\u5d4c\u5165\u5f0f\u7cfb\u7d71\u5806\u6700\u5e38\u898b\u7684\u6b7b\u6cd5\u3002<\/li>\n\n\n\n<li><strong>\u78ba\u5b9a\u6027\u662f\u7b2c\u4e00\u9700\u6c42\uff08Deterministic Execution\uff09<\/strong>\u2014\u2014\u5373\u6642\u4f5c\u696d\u7cfb\u7d71\uff08RTOS\uff09\u8981\u6c42\u6240\u6709\u64cd\u4f5c\u7684\u300c\u6700\u58de\u60c5\u6cc1\u57f7\u884c\u6642\u9593\uff08WCET\uff09\u53ef\u9810\u6e2c\u300d\uff1b\u800c\u9810\u8a2d\u52d5\u614b\u8a18\u61b6\u9ad4\u5206\u914d\u5668\u641c\u5c0b\u81ea\u7531\u93c8\u8868\uff08Free List\uff09\u7684\u8017\u6642\u8207\u6210\u6557\u90fd\u4e0d\u53ef\u9810\u6e2c\uff0c\u672c\u8cea\u4e0a\u8207\u5373\u6642\u6027\u5b8c\u5168\u5c0d\u7acb\u3002<\/li>\n<\/ul>\n\n\n\n<h2 id=\"\u57f7\u884c\u671f-new-\u5f88\u65b9\u4fbf\u7684-bad-smell\" class=\"wp-block-heading\">\u300c\u57f7\u884c\u671f new \u5f88\u65b9\u4fbf\u300d\u7684 Bad Smell<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u9032\u884c\u7a0b\u5f0f\u78bc\u5be9\u67e5\uff08Code Review\uff09\u6642\uff0c\u4ee5\u4e0b\u5169\u985e\u5beb\u6cd5\u662f\u6700\u5178\u578b\u7684\u684c\u9762\u7aef\u76f4\u642c\u5d4c\u5165\u5f0f\u53cd\u6a21\u5f0f\uff08Anti-Pattern\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"cpp\" class=\"language-cpp\">\/\/ \u684c\u9762\u601d\u7dad\u76f4\u642c\u5d4c\u5165\u5f0f (Bad Smell)\nvoid handle_packet(const uint8_t* data, size_t len) {\n    auto* pkt = new std::vector&lt;uint8_t&gt;(data, data + len);  \/\/ \u6bcf\u6536\u5230\u4e00\u5305\u5c31\u52d5\u614b new\n    parse(*pkt);\n    delete pkt;                    \/\/ \u65e9\u671f return \u5fd8\u8a18 delete = \u8a18\u61b6\u9ad4\u6d29\u6f0f\uff1b\u5fd8\u5e7e\u6b21 = \u4e00\u5929\u5f8c\u6b7b\u6a5f\n}\n\n\/\/ \u66f4\u96b1\u853d\u7684\u5806\u7a4d\u788e\u7247\u88fd\u9020\u6a5f\uff1a\u5b57\u4e32\u52d5\u614b\u62fc\u63a5\nstd::string make_topic(int id) {\n    return \"saludpcb\/device\/\" + std::to_string(id);   \/\/ \u89f8\u767c\u591a\u6b21\u81e8\u6642 Heap \u5206\u914d\u8207\u91cb\u653e\n}\n\/\/ \u82e5\u5728\u4efb\u52d9\u4e2d\u6bcf\u79d2\u547c\u53eb 10 \u6b21 \u2192 \u5806\u4e0a\u5927\u5c0f\u4e0d\u4e00\u7684\u8a18\u61b6\u9ad4\u584a\u53cd\u8986\u751f\u6ec5 \u2192 \u788e\u7247\u7a69\u5b9a\u7d2f\u7a4d<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u9019\u6bb5\u7a0b\u5f0f\u78bc\u5728\u684c\u6a5f\u4e0a\u8dd1\u5f97\u98db\u5feb\uff0c\u4f46\u5728 MCU \u4e0a\u537b\u96b1\u85cf\u5169\u500b\u81f4\u547d\u554f\u984c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5206\u914d\u6642\u6a5f\u5b8c\u5168\u4e0d\u53ef\u63a7<\/strong>\u2014\u2014\u7576\u7cfb\u7d71\u8655\u65bc\u696d\u52d9\u9ad8\u5cf0\u671f\uff08\u4f8b\u5982 Wi-Fi \u65b7\u7dda\u91cd\u9023 \uff0b TLS \u52a0\u5bc6\u4e0a\u50b3 \uff0b UI \u756b\u9762\u5237\u65b0\u540c\u6642\u57f7\u884c\uff09\u6642\uff0cSRAM \u6c34\u4f4d\u6700\u4f4e\uff0c\u6b64\u6642\u767c\u751f\u52d5\u614b\u5206\u914d\u5931\u6557\uff08Out of Memory\uff09\u7684\u6a5f\u7387\u6700\u9ad8\u2014\u2014\u504f\u504f\u5728\u6700\u4e0d\u8a72\u6b7b\u6a5f\u7684\u6642\u5019\u5d29\u6f70\u3002<\/li>\n\n\n\n<li><strong>\u788e\u7247\u5316\u662f\u6162\u6027\u75c5<\/strong>\u2014\u2014\u5728\u5be6\u9a57\u5ba4\u684c\u4e0a\u6e2c\u8a66\u8dd1\u534a\u5929\u5b8c\u5168\u6c92\u4e8b\uff0c\u7d55\u4e0d\u4ee3\u8868\u90e8\u7f72\u5230\u5ba2\u6236\u7aef\u8dd1\u4e00\u500b\u6708\u5f8c\u4e0d\u6703\u56e0\u70ba Heap Fragmentation \u800c\u7576\u6a5f\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6838\u5fc3\u9810\u7b97\u601d\u7dad<\/strong>\uff1a<strong>Embedded C++ Memory Optimization<\/strong> \u7684\u9ec3\u91d1\u5f8b\uff0c\u5c31\u662f\u628a\u5d4c\u5165\u5f0f\u8a18\u61b6\u9ad4\u8996\u70ba\u300c\u51fa\u5ee0\u7de8\u8b6f\u6642\u5c31\u5b9a\u6b7b\u7684\u786c\u9ad4\u9810\u7b97\u300d\u2014\u2014\u6240\u6709\u8a18\u61b6\u9ad4\u5206\u914d\u7684\u4e0a\u9650\u8207\u4f4d\u7f6e\uff0c\u90fd\u5fc5\u9808\u5728\u67b6\u69cb\u8a2d\u8a08\u671f\u5b8c\u5168\u53ef\u6578\u3001\u53ef\u9a57\u8b49\u3002<\/p>\n\n\n\n<h2 id=\"\u5206\u914d\u91d1\u5b57\u5854\u975c\u614b-\u68e7-\u6c60\" class=\"wp-block-heading\">\u5206\u914d\u91d1\u5b57\u5854\uff1a\u975c\u614b \u2192 \u68e7 \u2192 \u6c60<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u70ba\u4e86\u5fb9\u5e95\u6839\u9664\u57f7\u884c\u671f\u788e\u7247\uff0c\u6211\u5011\u61c9\u4f9d\u7167\u300c\u975c\u614b\u512a\u5148\u3001\u68e7\u6b21\u4e4b\u3001\u6c60\u5316\u515c\u5e95\u300d\u7684\u9806\u5e8f\u5efa\u7acb\u56db\u5c64\u5206\u914d\u91d1\u5b57\u5854\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u5c64\u7d1a<\/th><th>\u6280\u8853\u624b\u6bb5<\/th><th>\u9069\u7528\u5834\u666f<\/th><th>\u8a2d\u8a08\u7d04\u675f\u8207\u6ce8\u610f\u4e8b\u9805<\/th><\/tr><\/thead><tbody><tr><td>\u975c\u614b\u5206\u914d\uff08Static Allocation\uff09<\/td><td>\u5168\u57df\u7269\u4ef6\u3001<code>static<\/code>\u3001<code>constexpr<\/code><\/td><td>\u751f\u547d\u9031\u671f\u8207\u97cc\u9ad4\u5168\u7a0b\u76f8\u540c\u7684\u6838\u5fc3\u6a21\u7d44\uff08\u74b0\u5f62\u7de9\u885d\u6c60\u3001\u5168\u57df\u72c0\u614b\u6a5f\u3001\u9a45\u52d5\u5be6\u4f8b\uff09<\/td><td>\u7de8\u8b6f\u671f\u5b9a\u6b7b\u5bb9\u91cf\uff1bBSS \/ Data \u6bb5\u4f54\u7528\u6046\u5b9a\u4e14 Linker \u53ef\u76f4\u63a5\u6aa2\u67e5<\/td><\/tr><tr><td>\u68e7\u5206\u914d\uff08Stack Allocation\uff09<\/td><td>\u5c40\u90e8\u8b8a\u6578\u3001<code>std::array<\/code>\u3001CRTP \u975c\u614b\u591a\u578b\u985e<\/td><td>\u51fd\u5f0f\u5167\u90e8\u77ed\u66ab\u4f7f\u7528\u7684\u81e8\u6642\u8a08\u7b97\u7269\u4ef6\u3001\u5c0f\u5c3a\u5bf8\u5c01\u5305\u89e3\u6790\u7de9\u885d<\/td><td>FreeRTOS \u4efb\u52d9\u68e7\u6df1\u5ea6\u6709\u9650\uff08\u9700\u900f\u904e\u6c34\u4f4d\u7dda API \u76e3\u63a7\u4e26\u914d\u5920 Stack Size\uff09<\/td><\/tr><tr><td>\u6c60\u5206\u914d\uff08Memory Pool\uff09<\/td><td>\u56fa\u5b9a\u5927\u5c0f\u8a18\u61b6\u9ad4\u6c60 \uff0b Placement New<\/td><td>\u6700\u5927\u540c\u6642\u5b58\u5728\u6578\u91cf\u56fa\u5b9a\u3001\u4f46\u751f\u6ec5\u6642\u6a5f\u9ad8\u5ea6\u52d5\u614b\u7684\u4e8b\u4ef6\u6216\u4efb\u52d9\u7269\u4ef6<\/td><td>\u5fc5\u9808\u5728\u8a2d\u8a08\u671f\u660e\u78ba\u5b9a\u7fa9\u6c60\u8017\u76e1\uff08Pool Exhausted\uff09\u6642\u7684\u964d\u7d1a\u7b56\u7565<\/td><\/tr><tr><td>\u7cfb\u7d71\u5806\uff08System Heap\uff09<\/td><td><code>new<\/code> \/ <code>malloc<\/code><\/td><td>\u50c5\u9650 <code>app_main()<\/code> \u7cfb\u7d71\u555f\u52d5\u521d\u59cb\u5316\u968e\u6bb5\u7684\u4e00\u6b21\u6027\u5927\u578b\u914d\u7f6e<\/td><td>\u91cf\u7522\u97cc\u9ad4\u898f\u7bc4\u4e2d\uff0c\u56b4\u683c\u7981\u6b62\u5728\u904b\u884c\u671f\u4e3b\u8ff4\u5708\u5167\u983b\u7e41\u5206\u914d\u8207\u91cb\u653e<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u975c\u614b\u6a21\u677f\u74b0\u5f62\u7de9\u885d\u5be6\u4f5c<\/strong>\uff08\u7d50\u5408\u975c\u614b\u5206\u914d\u8207\u68e7\u5206\u914d\u7684\u6a19\u6e96\u5beb\u6cd5\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"cpp\" class=\"language-cpp\">template &lt;typename T, size_t N&gt;\nclass StaticBuffer {\n    static_assert(N &gt; 0, \"N must be positive\");\n    T data_[N]{};\n    size_t len_ = 0;\npublic:\n    constexpr size_t capacity() const { return N; }   \/\/ \u5bb9\u91cf\u65bc\u7de8\u8b6f\u671f\u5b8c\u5168\u53ef\u77e5\n    bool append(const T&amp; v) {\n        if (len_ &gt;= N) return false;                  \/\/ \u7de9\u885d\u5340\u6eff\u4e86\u5c31\u660e\u78ba\u62d2\u7d55\uff0c\u7d55\u4e0d\u52d5\u614b\u64f4\u5bb9\n        data_[len_++] = v;\n        return true;\n    }\n};\nStaticBuffer&lt;float, 128&gt; g_samples;   \/\/ \u914d\u7f6e\u65bc\u975c\u614b BSS \u5340\uff1a\u56fa\u5b9a 512 bytes\uff0c\u7d42\u8eab\u6046\u5b9a\u96f6\u788e\u7247<\/code><\/pre>\n\n\n\n<h2 id=\"placement-new-\u8207\u8a18\u61b6\u9ad4\u6c60\u5be6\u4f5c\" class=\"wp-block-heading\">Placement New \u8207\u8a18\u61b6\u9ad4\u6c60\u5be6\u4f5c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7576\u7269\u4ef6\u7684\u751f\u547d\u9031\u671f\u7121\u6cd5\u7d81\u5b9a\u5728\u55ae\u4e00\u51fd\u5f0f\u68e7\u4e0a\uff0c\u53c8\u4e0d\u60f3\u52d5\u7528\u7cfb\u7d71 Heap \u6642\uff0cC++ \u6a19\u6e96\u5167\u5efa\u7684 <code>placement new<\/code> \u5141\u8a31\u6211\u5011\u5728\u300c\u5df2\u7d93\u9810\u5148\u6e96\u5099\u597d\u7684\u975c\u614b\u8a18\u61b6\u9ad4\u9663\u5217\u300d\u4e0a\u76f4\u63a5\u547c\u53eb\u5efa\u69cb\u5b50\uff08Constructor\uff09\u5efa\u7acb\u7269\u4ef6\u2014\u2014\u9019\u6b63\u662f\u56fa\u5b9a\u5340\u584a\u8a18\u61b6\u9ad4\u6c60\uff08Fixed-Block Memory Pool\uff09\u7684\u6838\u5fc3\u6a5f\u5236\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"cpp\" class=\"language-cpp\">#include &lt;new&gt;       \/\/ \u5fc5\u9808\u5f15\u5165\u4ee5\u4f7f\u7528 placement new\n#include &lt;cstddef&gt;\n#include &lt;cstdint&gt;\n#include &lt;utility&gt;\n\nclass TaskPool {\npublic:\n    static constexpr size_t kMax = 8;\n    static constexpr size_t kSlotSize = 256;\n\n    \/\/ \u5f9e\u975c\u614b\u9663\u5217\u53d6\u51fa\u4e00\u683c\u7a7a\u69fd\uff0c\u5728\u539f\u5730\u5efa\u69cb\u7269\u4ef6\uff1b\u7528\u5b8c\u5f8c\u5fc5\u9808\u986f\u5f0f\u547c\u53eb destroy\n    template &lt;typename T, typename... Args&gt;\n    T* create(Args&amp;&amp;... args) {\n        static_assert(sizeof(T) &lt;= kSlotSize, \"Object exceeds slot size\");\n        void* slot = alloc_slot(sizeof(T));\n        if (!slot) return nullptr;\n        return new (slot) T(std::forward&lt;Args&gt;(args)...);   \/\/ placement new \u539f\u5730\u5efa\u69cb\n    }\n\n    template &lt;typename T&gt;\n    void destroy(T* obj) {\n        if (!obj) return;\n        obj-&gt;~T();                              \/\/ \u624b\u52d5\u986f\u5f0f\u547c\u53eb\u89e3\u69cb\u5b50\uff08\u78ba\u4fdd RAII \u8cc7\u6e90\u91cb\u653e\u4ecd\u751f\u6548\uff09\n        free_slot(obj);\n    }\n\nprivate:\n    alignas(max_align_t) static uint8_t pool_[kMax * kSlotSize];\n    bool used_[kMax] = {};\n\n    void* alloc_slot(size_t need) {\n        if (need &gt; kSlotSize) return nullptr;\n        for (size_t i = 0; i &lt; kMax; ++i)\n            if (!used_[i]) { used_[i] = true; return pool_ + i * kSlotSize; }\n        return nullptr;                          \/\/ \u8a18\u61b6\u9ad4\u6c60\u5df2\u6eff\uff1a\u56de\u50b3\u53ef\u9810\u6e2c\u7684\u5931\u6557\uff0c\u4e0d\u5d29\u6f70\n    }\n    void free_slot(void* p) {\n        auto idx = (reinterpret_cast&lt;uint8_t*&gt;(p) - pool_) \/ kSlotSize;\n        used_[idx] = false;\n    }\n};\nalignas(max_align_t) uint8_t TaskPool::pool_[TaskPool::kMax * TaskPool::kSlotSize];<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u786c\u9ad4\u7d1a\u7279\u6027\u512a\u52e2<\/strong>\u2014\u2014\u5206\u914d\u8017\u6642\u56b4\u683c\u6046\u5b9a O(1)\uff08\u50c5\u6383\u63cf\u4e00\u500b 8 \u683c\u7684\u5e03\u6797\u9663\u5217\uff09\u3001100% \u96f6\u5916\u90e8\u788e\u7247\uff08\u56fa\u5b9a 256 Bytes \u69fd\u4f4d\u5927\u5c0f\uff09\u3001\u6c60\u8017\u76e1\u884c\u70ba\u5b8c\u5168\u53ef\u8a2d\u8a08\uff08\u512a\u96c5\u8fd4\u56de nullptr\u3001\u4e1f\u68c4\u820a\u4e8b\u4ef6\u6216\u89f8\u767c\u7cfb\u7d71\u964d\u7d1a\uff09\uff0c\u63d0\u4f9b\u5373\u6642\u7cfb\u7d71\u6700\u9700\u8981\u7684\u4e09\u91cd\u4fdd\u8b49\u3002<\/li>\n\n\n\n<li><strong>RTOS \u5be6\u52d9\u66ff\u4ee3\u65b9\u6848<\/strong>\u2014\u2014\u5728 FreeRTOS \u74b0\u5883\u4e2d\uff0c\u5b98\u65b9\u63d0\u4f9b\u7684 <code>xQueueCreateStatic<\/code> \u8207 <code>xTaskCreateStatic<\/code> API \u5c31\u662f\u6700\u6a19\u6e96\u7684\u975c\u614b\u6c60\u5316\u65b9\u6848\uff0c\u61c9\u7528\u5c64\u7684\u7269\u4ef6\u6c60\u4e5f\u53ef\u4ee5\u76f4\u63a5\u57fa\u65bc FreeRTOS Queue \u4f86\u642d\u5efa\u57f7\u884c\u7dd2\u5b89\u5168\u7684\u8a18\u61b6\u9ad4\u6c60\u3002<\/li>\n<\/ul>\n\n\n\n<h2 id=\"rtti-\u8207\u7570\u5e38\u7684\u53d6\u6368\u5e33\" class=\"wp-block-heading\">RTTI \u8207\u7570\u5e38\u7684\u53d6\u6368\u5e33<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u9664\u4e86\u52d5\u614b\u8a18\u61b6\u9ad4\u5206\u914d\u4e4b\u5916\uff0c<strong>Embedded C++ Memory Optimization<\/strong> \u7684\u53e6\u4e00\u5927\u91cd\u9ede\u662f\u7cbe\u7c21 Flash\uff08ROM\uff09\u8207 RAM \u7684\u7de8\u8b6f\u671f\u8a9e\u8a00\u958b\u92b7\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>C++ \u8a9e\u8a00\u7279\u6027<\/th><th>\u95dc\u9589\u5f8c\u7684\u8a18\u61b6\u9ad4\u6536\u76ca<\/th><th>\u95dc\u9589\u5f8c\u7684\u958b\u767c\u4ee3\u50f9<\/th><th>\u5d4c\u5165\u5f0f\u91cf\u7522\u5be6\u6230\u5efa\u8b70<\/th><\/tr><\/thead><tbody><tr><td><strong>RTTI<\/strong>\uff08<code>dynamic_cast<\/code> \/ <code>typeid<\/code>\uff09<\/td><td>\u5927\u5e45\u7bc0\u7701 Flash \u4e2d\u7684 <code>typeinfo<\/code> \u5b57\u4e32\u8207\u578b\u5225\u63cf\u8ff0\u8868<\/td><td>\u5931\u53bb\u57f7\u884c\u671f\u52d5\u614b\u578b\u5225\u67e5\u8a62\u8207\u5411\u4e0b\u8f49\u578b\u80fd\u529b<\/td><td>MCU \u4e00\u5f8b\u95dc\u9589\uff08<code>-fno-rtti<\/code>\uff09\uff1b\u9700\u8981\u591a\u578b\u6d3e\u767c\u6642\u6539\u7528 CRTP \u6216 <code>std::variant<\/code><\/td><\/tr><tr><td><strong>\u7570\u5e38\u8655\u7406<\/strong>\uff08<code>try<\/code> \/ <code>throw<\/code> \/ <code>catch<\/code>\uff09<\/td><td>\u7701\u53bb\u9f90\u5927\u7684 Stack Unwind \u5c55\u958b\u8868\u8207\u57f7\u884c\u671f\u5806\u758a\u56de\u6eaf\u958b\u92b7<\/td><td>\u932f\u8aa4\u8655\u7406\u5fc5\u9808\u6539\u8d70\u50b3\u7d71\u932f\u8aa4\u78bc\u6216\u55ae\u5b50\u578b\u5225<\/td><td>\u97cc\u9ad4\u5de5\u7a0b\u6163\u4f8b\uff1a\u4e00\u5f8b\u95dc\u9589\uff08<code>-fno-exceptions<\/code>\uff09\uff0c\u932f\u8aa4\u50b3\u905e\u6539\u7528\u8fd4\u56de\u503c\u3001<code>esp_err_t<\/code> \u6216 C++23 <code>std::expected<\/code><\/td><\/tr><tr><td><strong>\u865b\u64ec\u51fd\u5f0f<\/strong>\uff08<code>virtual<\/code>\uff09<\/td><td>\u6bcf\u500b\u985e\u5225\u7701\u53bb\u4e00\u5f35 <code>vtable<\/code>\uff08ROM\uff09\uff0c\u6bcf\u500b\u5be6\u4f8b\u7701\u53bb\u4e00\u500b <code>vptr<\/code> \u6307\u91dd\uff08RAM\uff09<\/td><td>\u5931\u53bb\u57f7\u884c\u671f\u52d5\u614b\u66ff\u63db\u5be6\u4f5c\u7684\u9748\u6d3b\u6027<\/td><td>\u4f9d\u300c\u7de8\u8b6f\u671f\u77e5\u4e0d\u77e5\u9053\u5177\u9ad4\u578b\u5225\u300d\u4f86\u53d6\u6368\uff1a\u7de8\u8b6f\u671f\u5df2\u77e5\u7528\u6a21\u677f\uff0c\u57f7\u884c\u671f\u624d\u6c7a\u5b9a\u5247\u4fdd\u7559 <code>virtual<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5728 Espressif \u5b98\u65b9\u7684 <a href=\"https:\/\/docs.espressif.com\/projects\/esp-idf\/en\/stable\/esp32\/api-guides\/cplusplus.html\" target=\"_blank\" rel=\"noopener\">ESP-IDF C++ \u958b\u767c\u6307\u5357<\/a>\u4e2d\uff0c\u5c0d\u61c9\u7684 <code>menuconfig<\/code> \u7de8\u8b6f\u958b\u95dc\u4f4d\u65bc Compiler Options \u5340\uff08<code>CONFIG_COMPILER_CXX_RTTI<\/code> \u8207 <code>CONFIG_COMPILER_CXX_EXCEPTIONS<\/code> \u9810\u8a2d\u7686\u70ba\u95dc\u9589\u72c0\u614b\uff09\uff1b\u95dc\u9589\u5f8c <code>dynamic_cast<\/code> \u8207 <code>throw<\/code> \u5728\u7de8\u8b6f\u671f\u5c31\u6703\u76f4\u63a5\u5831\u932f\u6514\u622a\uff0c\u5e6b\u52a9\u5718\u968a\u5f9e\u8a2d\u8a08\u521d\u671f\u5c31\u9078\u5c0d\u591a\u578b\u8207\u932f\u8aa4\u8655\u7406\u8def\u7dda\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 id=\"\u5be6\u6230\u5fc3\u6cd5\" class=\"wp-block-heading\">\u5be6\u6230\u5fc3\u6cd5<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u555f\u52d5\u671f\u4e00\u6b21\u914d\u7f6e\u3001\u57f7\u884c\u671f\u96f6\u5206\u914d\uff08Zero Runtime Allocation\uff09<\/strong>\u2014\u2014\u628a\u300c\u6574\u5957\u97cc\u9ad4\u7cfb\u7d71\u5230\u5e95\u8981\u7528\u591a\u5c11\u8a18\u61b6\u9ad4\u300d\u8b8a\u6210\u958b\u6a5f\u521d\u59cb\u5316\u6642\u7684\u660e\u78ba\u6e05\u55ae\uff08\u5305\u542b\u5404\u500b FreeRTOS \u4efb\u52d9\u68e7\u3001\u901a\u8a0a\u4f47\u5217\u3001\u611f\u6e2c\u5668\u7de9\u885d\u6c60\uff09\uff0c\u9032\u5165\u4e3b\u8ff4\u5708\u5f8c\u7684\u52d5\u614b\u5206\u914d\u6b21\u6578\u61c9\u56b4\u683c\u70ba 0\uff0c\u9019\u662f\u5d4c\u5165\u5f0f\u7cfb\u7d71\u53ef\u9810\u6e2c\u6027\u7684\u6975\u81f4\u8868\u73fe\u3002<\/li>\n\n\n\n<li><strong><code>sizeof<\/code> \u9810\u7b97\u8868\u5beb\u9032\u6587\u6a94\u8207\u4ee3\u78bc<\/strong>\u2014\u2014\u5728\u6a21\u7d44\u7d1a\u5225\u5217\u51fa\u6bcf\u500b\u975c\u614b\u7269\u4ef6\u7684\u9ad4\u7a4d\uff0c\u4e26\u5c07 <code>static_assert<\/code> \u9ad4\u7a4d\u4e0a\u9650\u6aa2\u67e5\u76f4\u63a5\u5beb\u9032\u6a19\u982d\u6a94\u2014\u2014\u8b93\u8a18\u61b6\u9ad4\u9810\u7b97\u5f9e\u53e3\u982d\u4e0a\u7684\u300c\u5927\u7d04\u5e7e KB\u300d\u8b8a\u6210\u300c\u7de8\u8b6f\u671f\u5f37\u5236\u5b88\u9580\u54e1\u300d\u3002<\/li>\n\n\n\n<li><strong>\u52d5\u614b\u5b57\u4e32\u662f\u788e\u7247\u4e4b\u738b<\/strong>\u2014\u2014<code>std::string<\/code> \u7684\u983b\u7e41\u62fc\u63a5\u8207\u96b1\u5f0f\u81e8\u6642\u7269\u4ef6\u662f Heap \u5206\u914d\u5927\u6236\uff1b\u97cc\u9ad4\u958b\u767c\u61c9\u512a\u5148\u63a1\u7528 C++17 <code>std::string_view<\/code>\uff08\u96f6\u62f7\u8c9d\u552f\u8b80\u501f\u7528\uff09\u3001\u81ea\u8a02\u56fa\u5b9a\u5bb9\u91cf <code>FixedString<\/code> \u6a21\u677f\uff0c\u6216\u78ba\u4fdd\u5b57\u4e32\u9577\u5ea6\u7dad\u6301\u5728 SSO\uff08Small String Optimization\uff0c\u901a\u5e38\u70ba 15 Bytes \u5167\uff09\u9580\u6abb\u4e4b\u4e0b\u3002<\/li>\n\n\n\n<li><strong>STL \u5bb9\u5668\u642d\u914d\u81ea\u8a02\u914d\u7f6e\u5668\uff08Custom Allocator\uff09<\/strong>\u2014\u2014\u5982\u679c\u6f14\u7b97\u6cd5\u975e\u7528 <code>std::vector<\/code> \u4e0d\u53ef\uff0c\u53ef\u900f\u904e C++17 <code>std::pmr::monotonic_buffer_resource<\/code> \u6216\u81ea\u8a02 Allocator \u5c07\u5bb9\u5668\u5e95\u5c64\u7d81\u5b9a\u81f3\u975c\u614b\u8a18\u61b6\u9ad4\u6c60\uff0c\u517c\u9867\u300c\u73fe\u4ee3 STL \u5bb9\u5668\u8a9e\u6cd5 \uff0b \u975c\u614b\u6c60\u5316\u8a9e\u610f\u300d\uff1b\u6216\u8005\u76f4\u63a5\u6539\u7528 <code>std::array<\/code> \u8207 StaticRing \u7e5e\u958b\u52d5\u614b\u5bb9\u91cf\u3002<\/li>\n\n\n\n<li><strong>\u5efa\u7acb\u8a18\u61b6\u9ad4\u6c34\u4f4d\u91cf\u6e2c\u9589\u74b0<\/strong>\u2014\u2014\u5728 ESP-IDF \u4e2d\u5b9a\u671f\u547c\u53eb <a href=\"https:\/\/docs.espressif.com\/projects\/esp-idf\/en\/stable\/esp32\/api-reference\/system\/mem_alloc.html\" target=\"_blank\" rel=\"noopener\">ESP-IDF Heap Memory Allocation API<\/a> \u7684 <code>heap_caps_get_free_size()<\/code> \u8207 <code>xPortGetMinimumEverFreeHeapSize()<\/code>\uff0c\u5c07\u6b77\u53f2\u6700\u5c0f\u5269\u9918\u6c34\u4f4d\uff08High Watermark\uff09\u8207\u6700\u5927\u9023\u7e8c\u53ef\u7528\u584a\uff08<code>heap_caps_get_largest_free_block()<\/code>\uff09\u8a18\u9304\u5230\u9059\u6e2c\u65e5\u8a8c\u4e2d\u2014\u2014\u9019\u5169\u500b\u6578\u503c\u7684\u5dee\u8ddd\u5c31\u662f\u5916\u90e8\u788e\u7247\u7684\u9ad4\u6aa2\u6307\u6a19\u3002<\/li>\n<\/ul>\n\n\n\n<h2 id=\"\u7d50\u8ad6\" class=\"wp-block-heading\">\u7d50\u8ad6<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Embedded C++ Memory Optimization<\/strong> \u7684\u672c\u8cea\uff0c\u5c31\u662f<strong>\u628a\u8a18\u61b6\u9ad4\u5f9e\u4e0d\u53ef\u63a7\u7684\u300c\u57f7\u884c\u671f\u8b8a\u6578\u300d\u8b8a\u6210\u7de8\u8b6f\u5668\u53ef\u9a57\u8b49\u7684\u300c\u8a2d\u8a08\u671f\u5e38\u6578\u300d<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u9694\u96e2\u8b8a\u5316<\/strong>\u2014\u2014\u900f\u904e\u5206\u914d\u7b56\u7565\u5206\u5c64\uff08\u975c\u614b BSS \/ \u4efb\u52d9\u68e7 Stack \/ \u56fa\u5b9a\u8a18\u61b6\u9ad4\u6c60 Pool\uff09\uff0c\u8b93\u5404\u500b\u696d\u52d9\u6a21\u7d44\u7684\u8a18\u61b6\u9ad4\u884c\u70ba\u4e92\u4e0d\u6c61\u67d3\u3001\u4e92\u4e0d\u6436\u4f54\u3002<\/li>\n\n\n\n<li><strong>\u91cb\u653e\u786c\u9ad4\u6f5b\u80fd<\/strong>\u2014\u2014\u5be6\u73fe 100% \u96f6\u788e\u7247\u8207 O(1) \u6642\u9593\u78ba\u5b9a\u6027\uff0c\u8b93 7\u00d724 \u5c0f\u6642\u9577\u6548\u904b\u884c\u7684\u7a69\u5b9a\u5ea6\u5f9e\u8edf\u9ad4\u67b6\u69cb\u5c64\u9762\u76f4\u63a5\u6210\u7acb\u3002<\/li>\n\n\n\n<li><strong>\u5de5\u7a0b\u5e2b\u512a\u96c5\u6210\u9577<\/strong>\u2014\u2014\u7834\u9664\u300cC++ \u5f88\u80a5\u4e0d\u9069\u5408\u5beb\u97cc\u9ad4\u300d\u7684\u53e4\u65e9\u8ff7\u601d\uff0c\u9032\u968e\u5230\u300c\u8a9e\u8a00\u7279\u6027\u6309\u9700\u53d6\u7528\u3001\u6bcf\u4e00 Byte \u7686\u53ef\u7cbe\u7b97\u300d\uff0c\u9019\u6b63\u662f\u73fe\u4ee3\u5d4c\u5165\u5f0f C++ \u5de5\u7a0b\u5e2b\u6700\u5177\u50f9\u503c\u7684\u6838\u5fc3\u7d20\u990a\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u6b21\u6e96\u5099\u5728\u97cc\u9ad4\u88e1\u6572\u4e0b <code>new<\/code> \u4e4b\u524d\uff0c\u5148\u554f\u81ea\u5df1\u4e00\u53e5\uff1a\u300c\u9019\u500b\u7269\u4ef6\u7684\u58fd\u547d\u6709\u591a\u9577\uff1f\u6700\u9ad8\u5cf0\u6703\u540c\u6642\u51fa\u73fe\u5e7e\u500b\uff1f\u300d\u7576\u4f60\u958b\u59cb\u70ba\u6a21\u7d44\u5efa\u7acb <code>sizeof<\/code> \u8a18\u61b6\u9ad4\u9810\u7b97\u8868\uff0c\u4f60\u5c31\u5df2\u7d93\u8e0f\u5165\u5c08\u696d\u5d4c\u5165\u5f0f C++ \u7cfb\u7d71\u67b6\u69cb\u7684\u9818\u57df\u4e86\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity alignwide has-text-color has-palette-color-1-color has-palette-color-1-background-color has-background is-style-wide\"\/>\n","protected":false},"excerpt":{"rendered":"<p>Embedded C++ Memory Optimization\uff08\u5d4c\u5165\u5f0f C++ \u8a18\u61b6\u9ad4\u512a\u5316\uff09\u662f C++ \u80fd\u5426 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4379,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,19,53,83],"tags":[27,21,44,9,11],"class_list":["post-4375","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-module","category-arduino","category-esp32","category-featured","tag-c","tag-ide","tag-programming-language","tag-python","tag-tutorial"],"_links":{"self":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts\/4375","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/comments?post=4375"}],"version-history":[{"count":4,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts\/4375\/revisions"}],"predecessor-version":[{"id":4381,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts\/4375\/revisions\/4381"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/media\/4379"}],"wp:attachment":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/media?parent=4375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/categories?post=4375"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/tags?post=4375"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}