{"id":7487,"date":"2026-07-24T13:34:15","date_gmt":"2026-07-24T05:34:15","guid":{"rendered":"https:\/\/i007.cc\/wordpress\/?p=7487"},"modified":"2026-07-24T13:34:15","modified_gmt":"2026-07-24T05:34:15","slug":"https-github-com-netcan-asyncio-%e8%bf%99%e4%b8%aa%e9%a1%b9%e7%9b%ae%e8%a7%a3%e5%86%b3%e4%ba%86%e4%bb%80%e4%b9%88%e9%97%ae%e9%a2%98%ef%bc%9f%e6%9c%89%e4%bb%80%e4%b9%88%e5%8e%9f%e5%88%9b%e6%80%a7","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/7487","title":{"rendered":"https:\/\/github.com\/netcan\/asyncio \u8fd9\u4e2a\u9879\u76ee\u89e3\u51b3\u4e86\u4ec0\u4e48\u95ee\u9898\uff1f\u6709\u4ec0\u4e48\u539f\u521b\u6027\uff1f"},"content":{"rendered":"
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\u8fd9\u662f\u4e2a\u5f88\u503c\u5f97\u6df1\u6316\u7684\u9879\u76ee\u3002\u7efc\u5408\u6765\u770b\uff0c\u5b83\u7684\u539f\u521b\u6027\u6bd4\u540d\u5b57\u6697\u793a\u7684\u66f4\u6709\u5b9e\u8d28\u6027\u3002<\/p>\n

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\u5b83\u89e3\u51b3\u4e86\u4ec0\u4e48\u95ee\u9898<\/h3>\n

C++20 \u5728\u8bed\u8a00\u5c42\u9762\u52a0\u5165\u4e86\u534f\u7a0b\uff08coroutines\uff09\uff0c\u4f46\u53ea\u7ed9\u4e86\u4f60\u539f\u59cb\u673a\u5236\uff1aco_await<\/code>\u3001co_yield<\/code>\u3001co_return<\/code>\u00a0\u8fd9\u4e9b\u5173\u952e\u5b57\uff0c\u4ee5\u53ca\u00a0promise_type<\/code>\u3001coroutine_handle<\/code>\u00a0\u8fd9\u4e9b\u5e95\u5c42\u63a5\u53e3\u3002\u6807\u51c6\u59d4\u5458\u4f1a\u6545\u610f\u4e0d\u63d0\u4f9b\u8fd0\u884c\u65f6<\/strong>\u2014\u2014\u6ca1\u6709\u4e8b\u4ef6\u5faa\u73af\u3001\u6ca1\u6709\u4efb\u52a1\u8c03\u5ea6\u5668\u3001\u6ca1\u6709 I\/O \u539f\u8bed\u3001\u6ca1\u6709\u540c\u6b65\u5de5\u5177\u3002<\/p>\n

\u8fd9\u610f\u5473\u7740\u4efb\u4f55\u60f3\u7528 C++20 \u534f\u7a0b\u505a\u5f02\u6b65\u7f16\u7a0b\u7684\u4eba\uff0c\u90fd\u5fc5\u987b\u81ea\u5df1\u5b9e\u73b0\u6574\u5957\u8fd0\u884c\u65f6\u57fa\u7840\u8bbe\u65bd\u3002\u800c\u6b63\u786e\u5b9e\u73b0\u8fd9\u4e9b\u4e1c\u897f\u6781\u5176\u590d\u6742\uff1a\u534f\u7a0b\u5e27\u7684\u751f\u547d\u5468\u671f\u7ba1\u7406\u3001\u6302\u8d77\u70b9\u7684\u6240\u6709\u6743\u8bed\u4e49\u3001\u53d6\u6d88\u4f20\u64ad\u7684\u6b63\u786e\u6027\u2026\u2026\u6bcf\u4e00\u9879\u90fd\u662f\u8db3\u4ee5\u8e29\u5751\u6570\u5468\u7684\u9886\u57df\u3002<\/p>\n

netcan\/asyncio \u505a\u7684\u5c31\u662f\u628a\u8fd9\u5957\u8fd0\u884c\u65f6\u57fa\u7840\u8bbe\u65bd\u505a\u51fa\u6765\uff0c\u5e76\u4e14\u9009\u62e9\u4e86\u4e00\u4e2a\u5177\u4f53\u7684 API \u8bbe\u8ba1\u76ee\u6807\uff1a\u8ba9 C++ \u7684\u5f02\u6b65\u4ee3\u7801\u770b\u8d77\u6765\u548c Python asyncio \u4e00\u6a21\u4e00\u6837<\/strong>\u3002<\/p>\n

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cpp<\/div>\n
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\/\/ Python:\r\nresults = await asyncio.gather(task_a(), task_b(), task_c())\r\n\r\n\/\/ netcan\/asyncio C++:\r\nauto [a, b, c] = co_await asyncio::gather(task_a(), task_b(), task_c());<\/pre>\n
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\u8fd9\u4e0d\u53ea\u662f\u6539\u4e2a\u540d\u5b57\uff0cgather()<\/code>\u00a0\u8fd4\u56de\u7684\u662f\u7f16\u8bd1\u671f\u786e\u5b9a\u7c7b\u578b\u7684 tuple\uff0c\u7528 C++17 \u7ed3\u6784\u5316\u7ed1\u5b9a\u76f4\u63a5\u89e3\u5305\uff0c\u7c7b\u578b\u5b89\u5168\uff0c\u96f6\u5f00\u9500\u3002<\/p>\n
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\u6709\u54ea\u4e9b\u539f\u521b\u6027<\/h3>\n
1. \u7528\u00a0await_transform<\/code>\u00a0+\u00a0std::source_location<\/code>\u00a0\u5b9e\u73b0\u5f02\u6b65\u8c03\u7528\u6808\u8fd8\u539f\uff08\u6700\u72ec\u7279\u7684\u6280\u672f\u70b9\uff09<\/strong><\/p>\n
\u534f\u7a0b\u6700\u8ba9\u5f00\u53d1\u8005\u5934\u75bc\u7684\u8c03\u8bd5\u95ee\u9898\u662f\uff1a\u4f20\u7edf\u8c03\u7528\u6808\u5728\u00a0co_await<\/code>\u00a0\u5904\u65ad\u88c2\uff0c\u56e0\u4e3a\u534f\u7a0b\u5e27\u5728\u5806\u4e0a\uff0c\u6302\u8d77\u540e\u6808\u5e27\u5df2\u7ecf\u4e0d\u5b58\u5728\u4e86\u3002\u8c03\u8bd5\u5668\u53ea\u80fd\u770b\u5230\u5f53\u524d\u5e27\uff0c\u5b8c\u5168\u4e0d\u77e5\u9053”\u662f\u8c01\u53d1\u8d77\u4e86\u8fd9\u4e2a await”\u3002<\/p>\n
netcan\/asyncio \u7684\u89e3\u6cd5\u662f\uff1a\u5728\u00a0promise_type<\/code>\u00a0\u91cc\u91cd\u8f7d\u00a0await_transform()<\/code>\u2014\u2014C++ \u534f\u7a0b\u89c4\u5b9a\u6bcf\u4e00\u6b21\u00a0co_await<\/code>\u00a0\u90fd\u4f1a\u5148\u7ecf\u8fc7\u8fd9\u4e2a\u51fd\u6570\u2014\u2014\u5728\u8fd9\u91cc\u7528\u00a0std::source_location::current()<\/code>\u00a0\u8bb0\u5f55\u5f53\u524d await \u53d1\u751f\u7684\u6587\u4ef6\u3001\u884c\u53f7\u3001\u51fd\u6570\u540d\uff0c\u5f62\u6210\u4e00\u6761\u94fe\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6 dump \u51fa\u5b8c\u6574\u7684\u5f02\u6b65\u8c03\u7528\u94fe\uff1a<\/p>\n
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asyncio callstack:\r\n  #0 tcp_echo_client at example\/echo_client.cpp:12\r\n  #1 main at example\/echo_client.cpp:20<\/pre>\n
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\u8fd9\u4e2a\u6280\u672f\u5728 2021 \u5e74\u9879\u76ee\u521b\u5efa\u65f6\uff0c\u5728 C++ \u5f00\u6e90\u793e\u533a\u91cc\u6781\u5c11\u6709\u4eba\u5b9e\u73b0\uff0c\u662f\u4f5c\u8005\u5bf9 C++20 \u534f\u7a0b\u673a\u5236\u6df1\u5ea6\u7406\u89e3\u540e\u7684\u539f\u521b\u5de5\u7a0b\u6280\u5de7\u3002<\/p>\n
2. \u7ed3\u6784\u5316\u5e76\u53d1\u7684 C++ \u5b9e\u73b0<\/strong><\/p>\n
gather()<\/code>\u3001wait_for()<\/code>\u3001\u53d6\u6d88\u4f20\u64ad\u8fd9\u5957 API \u5bf9\u5e94\u7684\u662f Python asyncio \u7684\u7ed3\u6784\u5316\u5e76\u53d1\u6a21\u578b\u2014\u2014\u4e00\u7ec4\u4efb\u52a1\u8981\u4e48\u5168\u90e8\u5b8c\u6210\uff0c\u8981\u4e48\u4e00\u4e2a\u53d6\u6d88\u5e26\u52a8\u5176\u4ed6\u5168\u90e8\u53d6\u6d88\u3002\u5728 C++ \u91cc\u5b9e\u73b0\u8fd9\u4e2a\u7684\u96be\u70b9\u662f\uff1a\u53d6\u6d88\u4fe1\u53f7\u8981\u7a7f\u900f\u534f\u7a0b\u5e27\u4f20\u9012\uff0c\u4e14\u53d6\u6d88\u65f6\u8981\u6b63\u786e\u6790\u6784\u6240\u6709\u6302\u8d77\u72b6\u6001\u3002\u9879\u76ee\u901a\u8fc7\u5f02\u5e38\u673a\u5236\u5b9e\u73b0\u53d6\u6d88\u4f20\u64ad\uff0c\u8bbe\u8ba1\u662f\u5e72\u51c0\u7684\u3002<\/p>\n
3. \u7eaf C++20\uff0c\u65e0\u5916\u90e8\u5f02\u6b65\u8fd0\u884c\u65f6\u4f9d\u8d56<\/strong><\/p>\n
\u4e0d\u4f9d\u8d56 libuv\u3001\u4e0d\u4f9d\u8d56 Boost.Asio \u7684\u4e8b\u4ef6\u5faa\u73af\uff0c\u5b8c\u5168\u4ece C++20 \u6807\u51c6\u5e93\u7684\u534f\u7a0b\u673a\u5236\u548c\u00a0epoll<\/code>\/io_uring<\/code>\u00a0\u6784\u5efa\uff0c\u4fdd\u6301\u4e86\u6781\u5c0f\u7684\u5c42\u6b21\u6570\u3002\u8fd9\u5728\u540c\u7c7b\u9879\u76ee\u91cc\u4e0d\u5e38\u89c1\u2014\u2014\u5927\u591a\u6570 C++ \u534f\u7a0b\u5e93\u8981\u4e48\u57ab\u5728 ASIO \u4e4b\u4e0a\uff0c\u8981\u4e48\u57ab\u5728 libuv \u4e4b\u4e0a\u3002<\/p>\n
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\u6027\u80fd\u8868\u73b0<\/h3>\n
\u57fa\u51c6\u6d4b\u8bd5\uff0810M \u8bf7\u6c42\u30011000 \u5e76\u53d1\u3001echo server\uff09\uff1a<\/p>\n
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\u6846\u67b6<\/th>\nRPS<\/th>\n<\/tr>\n<\/thead>\n
netcan\/asyncio<\/strong><\/td>\n164,457<\/strong><\/td>\n<\/tr>\n
libuv<\/td>\n159,937<\/td>\n<\/tr>\n
ASIO 1.18<\/td>\n159,322<\/td>\n<\/tr>\n
Tokio (Rust)<\/td>\n156,852<\/td>\n<\/tr>\n
Python asyncio+uvloop<\/td>\n100,426<\/td>\n<\/tr>\n
Python asyncio<\/td>\n47,393<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u9886\u5148 ASIO \u7ea6 3%\uff0c\u9886\u5148 Tokio \u7ea6 5%\u2014\u2014\u5dee\u8ddd\u5728\u540c\u7b49\u91cf\u7ea7\u5185\uff0c\u8bf4\u660eC++20 \u539f\u751f\u534f\u7a0b\u7684\u5207\u6362\u5f00\u9500\u7ea6 10 \u7eb3\u79d2<\/strong>\uff0c\u4e0e IO \u672c\u8eab\u7684\u6beb\u79d2\u7ea7\u5ef6\u8fdf\u76f8\u6bd4\u51e0\u4e4e\u53ef\u5ffd\u7565\uff0c\u4e0d\u662f\u74f6\u9888\u3002<\/p>\n
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\u771f\u6b63\u6709\u4ef7\u503c\u7684\u5730\u65b9\uff1a<\/strong><\/p>\n