{"id":4319,"date":"2020-05-21T20:29:39","date_gmt":"2020-05-21T12:29:39","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=4319"},"modified":"2020-05-21T20:29:39","modified_gmt":"2020-05-21T12:29:39","slug":"c20%e5%8d%8f%e7%a8%8b%e5%85%a5%e9%97%a8","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/4319","title":{"rendered":"c++20\u534f\u7a0b\u5165\u95e8"},"content":{"rendered":"
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\u539f\u6587\u5730\u5740<\/a><\/div>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/header>\n
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\u968f\u7740coroutine ts\u6b63\u5f0f\u8fdb\u5165c++20\uff0cc++\u5df2\u7ecf\u8fdb\u5165\u534f\u7a0b\u65f6\u4ee3\u4e86\u3002c++20\u63d0\u4f9b\u7684\u65e0\u6808\u534f\u7a0b\uff0c\u62e5\u6709\u8bb8\u591a\u65e0\u4e0e\u4f26\u6bd4\u7684\u4f18\u8d8a\u6027\uff0c\u6bd4\u5982\u8bf4\u6ca1\u6709\u4f20\u67d3\u6027\uff0c\u53ef\u4ee5\u4e0e\u4ee5\u524d\u975e\u534f\u7a0b\u98ce\u683c\u7684\u4ee3\u7801\u5e76\u5b58\uff0c\u518d\u6bd4\u5982\u8bf4\u4e0d\u9700\u8981\u989d\u5916\u7684\u8c03\u5ea6\u5668\uff0c\u603b\u4e4b\u662f\u4e2a\u597d\u4e1c\u897f\u3002<\/p>\n

\u4f46\u662f\u4e0d\u5e78\u7684\u662fc++20\u7684\u534f\u7a0b\u6807\u51c6\u53ea\u5305\u542b\u7f16\u8bd1\u5668\u9700\u8981\u5b9e\u73b0\u7684\u5e95\u5c42\u529f\u80fd\uff0c\u5e76\u6ca1\u6709\u5305\u542b\u7b80\u5355\u65b9\u4fbf\u5730\u4f7f\u7528\u534f\u7a0b\u7684\u9ad8\u7ea7\u5e93\uff0c\u76f8\u5173\u7684\u7c7b\u548c\u51fd\u6570\u8fdb\u5165std\u6807\u51c6\u5e93\u4f30\u8ba1\u8981\u7b49\u5230c++23\u3002\u6240\u4ee5\uff0c\u5728c++20\u4e2d\uff0c\u5982\u679c\u8981\u4f7f\u7528\u534f\u7a0b\uff0c\u8981\u4e48\u7b49\u522b\u4eba\u5c01\u88c5\u597d\u4e86\u7ed9\u4f60\u7528\uff0c\u8981\u4e48\u5c31\u8981\u81ea\u5df1\u5b66\u7740\u7528\u5e95\u5c42\u7684\u529f\u80fd\u81ea\u5df1\u5c01\u88c5\u3002<\/p>\n

c++\u7684\u534f\u7a0b\u529f\u80fd\u662f\u7ed9\u5e93\u7684\u5f00\u53d1\u8005\u4f7f\u7528\u7684\uff0c\u6240\u4ee5\u770b\u8d77\u6765\u6bd4\u8f83\u590d\u6742\uff0c\u4f46\u662f\u7ecf\u8fc7\u5e93\u7684\u4f5c\u8005\u5c01\u88c5\u4ee5\u540e\u7528\u8d77\u6765\u662f\u975e\u5e38\u7b80\u5355\u7684\uff0c\u6bd4\u5982\u8bf4asio\u91cc\u9762\u5c31\u5df2\u7ecf\u5c01\u88c5\u597d\u4e86\uff0c\u76f8\u5173\u7528\u6cd5\u770b\u6211\u524d\u9762\u7684\u8fd9\u7bc7\u6587\u7ae0<\/a>\u3002\u53e6\u5916\uff0cc++\u7684\u534f\u7a0b\u6027\u80fd\u975e\u5e38\u4e4b\u9ad8\uff0c\u5176\u4f5c\u8005\u7684\u89c6\u9891\u4ecb\u7ecd<\/a>\u91cc\u9762\u8bf4\u4e86\uff0c(\u4e00\u4e2a\u8fdb\u7a0b)\u53ef\u4ee5\u5f00\u542f\u51e0\u5341\u4ebf\u4e2a\u534f\u7a0b\uff0c\u53ef\u4ee5\u8bf4\u662f\u65e0\u51fa\u5176\u53f3\u4e86\u3002<\/p>\n

\u867d\u7136\u8bf4\u534f\u7a0b\u4e3b\u8981\u662f\u7ed9\u5e93\u7684\u4f5c\u8005\u4f7f\u7528\u7684\uff0c\u4f46\u662f\u5b66c++\u7684\uff0c\u54ea\u4e2a\u4e0d\u60f3\u5199\u81ea\u5df1\u7684\u5e93\u5462\uff1f\u6240\u4ee5\u5b66\u5b66\u80af\u5b9a\u662f\u6709\u597d\u5904\u7684\u3002\u53ef\u60dc\u73b0\u5728\u5173\u4e8ec++20\u534f\u7a0b\u7684\u6559\u7a0b\u5f88\u5c11\uff0c\u6240\u4ee5\u6211\u8bd5\u7740\u5199\u4e86\u8fd9\u7bc7\u5165\u95e8\u6559\u7a0b\uff0c\u4ecb\u7ecd\u4e00\u4e9b\u6700\u7b80\u5355\u6700\u6709\u7528\u7684\u4e1c\u897f\uff0c\u800c\u4e14\u6211\u5e0c\u671b\u63d0\u4f9b\u4e00\u4e2a\u5c06\u5f02\u6b65\u53d8\u4e3a\u534f\u7a0b\u7684\u901a\u7528\u5957\u8def\u3002\u5bf9\u4e8e\u8fd9\u7bc7\u6559\u7a0b\uff0c\u5927\u5bb6\u5982\u679c\u53d1\u73b0\u6709\u4ec0\u4e48\u9519\u8bef\u8bf7\u53ca\u65f6\u544a\u8bc9\u6211\uff0c\u6211\u4f1a\u7b2c\u4e00\u65f6\u95f4\u4fee\u6539\u3002<\/p>\n

\u534f\u7a0b\u7684\u51fa\u73b0\u4e3b\u8981\u662f\u4e3a\u4e86\u89e3\u51b3\u5f02\u6b65\u7f16\u7a0b\u7684\u9ebb\u70e6\uff0c\u5f02\u6b65\u7f16\u7a0b\u4e00\u822c\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n

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async_call(input1, intput2, ..., call_back)<\/code><\/pre>\n<\/div>\n
\u5c31\u662f\u7528\u4e00\u5806\u8f93\u5165\u53c2\u6570\u518d\u52a0\u4e0a\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\uff0casync_call<\/code>\u51fd\u6570\u8c03\u7528\u540e\u7acb\u5373\u8fd4\u56de\uff0c\u5f53\u5f02\u6b65\u64cd\u4f5c\u5b8c\u6210\u65f6\uff0ccall_back\u51fd\u6570\u4f1a\u88ab\u8c03\u7528\u3002<\/p>\n
\u5728C++\u4e2d\uff0c\u4f7f\u7528\u5f02\u6b65\u7684\u573a\u666f\u4e3b\u8981\u6709\u4e24\u79cd\uff1a
\n1. \u9700\u8981\u7b49\u5f85\u7684\u7ed3\u679c\u5728\u5176\u5b83\u8fdb\u7a0b\u4e2d\u63d0\u4f9b\uff0c\u6bd4\u5982\u8c03\u7528\u64cd\u4f5c\u7cfb\u7edf\u7684\u5f02\u6b65io\u8bfb\u5199\u6587\u4ef6\u3001\u901a\u8fc7\u7f51\u7edc\u53d1\u9001\u8bf7\u6c42\u5230\u5176\u5b83\u8fdb\u7a0b\u7b49\u5f85\u5904\u7406\u4ee5\u540e\u7ed3\u679c\u4f9d\u7136\u901a\u8fc7\u7f51\u7edc\u8fd4\u56de\uff0c\u6587\u4ef6\u8bfb\u5199\u5b8c\u6210\u6216\u662f\u7f51\u7edc\u8bf7\u6c42\u8fd4\u56de\u65f6\u8c03\u7528\u6307\u5b9a\u7684\u56de\u8c03\u51fd\u6570\uff1b
\n2. \u9700\u8981\u7b49\u5f85\u7684\u7ed3\u679c\u5728\u672c\u8fdb\u7a0b\u4e2d\u63d0\u4f9b\uff0c\u4e00\u822c\u5c31\u662f\u5728\u522b\u7684\u7ebf\u7a0b\u4e2d\uff0c\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u522b\u7684\u7ebf\u7a0b\uff0c\u522b\u7684\u7ebf\u7a0b\u64cd\u4f5c\u5b8c\u6210\u4ee5\u540e\uff0c\u8c03\u7528\u6307\u5b9a\u7684\u56de\u8c03\u51fd\u6570\u3002<\/p>\n
\u4e0d\u7ba1\u662f\u54ea\u79cd\u60c5\u51b5\uff0c\u5bf9\u4e8e\u5f02\u6b65\u8c03\u7528\uff0c\u90fd\u53ef\u4ee5\u7528\u534f\u7a0b\u6539\u9020\u6210\u4e00\u4e2a\u5982\u4e0b\u683c\u5f0f\u7684\u201c\u540c\u6b65\u201d\u8c03\u7528\uff1a<\/p>\n
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co_await coro_call(input1, input2, ...)<\/code><\/pre>\n<\/div>\n
\u5176\u5b9e\u6539\u9020\u8d77\u6765\u6781\u4e3a\u7b80\u5355\uff0c\u53ea\u8981\u5728\u5f02\u6b65\u51fd\u6570\u7684\u56de\u8c03\u51fd\u6570\u4e2d\u8c03\u7528resume()\u6062\u590d\u534f\u7a0b\u5373\u53ef\u3002\u5bf9\u4e8e1\u548c2\u4e24\u79cd\u60c5\u51b5\uff0c\u7b2c\u4e00\u79cd\u60c5\u51b5\u66f4\u7b80\u5355\uff0c\u56e0\u4e3a\u7b2c\u4e8c\u79cd\u53ef\u80fd\u4f1a\u9700\u8981\u8003\u8651\u540c\u6b65\u7684\u95ee\u9898\u3002<\/p>\n
\u534f\u7a0b\u901a\u8fc7Promise\u548cAwaitable\u63a5\u53e3\u768415\u4e2a\u4ee5\u4e0a\u7684\u51fd\u6570\u6765\u63d0\u4f9b\u7ed9\u7a0b\u5e8f\u5458\u5b9a\u5236\u534f\u7a0b\u7684\u6d41\u7a0b\u548c\u529f\u80fd\uff0c\u5b9e\u73b0\u6700\u7b80\u5355\u7684\u534f\u7a0b\u9700\u8981\u7528\u5230\u5176\u4e2d\u76848\u4e2a\uff085\u4e2aPromise\u7684\u51fd\u6570\u548c3\u4e2aAwaitable\u7684\u51fd\u6570\uff09\uff0c\u5176\u4e2dPromise\u7684\u51fd\u6570\u53ef\u4ee5\u5148\u4e0d\u7ba1\u5b83\uff0c\u5148\u6765\u770bAwaitable\u76843\u4e2a\u51fd\u6570\u3002<\/p>\n
\u5982\u679c\u8981\u5b9e\u73b0\u5f62\u5982co_await blabla;<\/code>\u7684\u534f\u7a0b\u8c03\u7528\u683c\u5f0f, blabla\u5c31\u5fc5\u987b\u5b9e\u73b0Awaitable\u3002co_await<\/code>\u662f\u4e00\u4e2a\u65b0\u7684\u8fd0\u7b97\u7b26\u3002Awaitable\u4e3b\u8981\u67093\u4e2a\u51fd\u6570\uff1a
\n1.\u00a0await_ready<\/code>\uff1a\u8fd4\u56deAwaitable\u5b9e\u4f8b\u662f\u5426\u5df2\u7ecfready\u3002\u534f\u7a0b\u5f00\u59cb\u4f1a\u8c03\u7528\u6b64\u51fd\u6570\uff0c\u5982\u679c\u8fd4\u56detrue\uff0c\u8868\u793a\u4f60\u60f3\u5f97\u5230\u7684\u7ed3\u679c\u5df2\u7ecf\u5f97\u5230\u4e86\uff0c\u534f\u7a0b\u4e0d\u9700\u8981\u6267\u884c\u4e86\u3002\u6240\u4ee5\u5927\u90e8\u5206\u60c5\u51b5\u8fd9\u4e2a\u51fd\u6570\u7684\u5b9e\u73b0\u662f\u8981return false\u3002
\n2.\u00a0await_suspend<\/code>\uff1a\u6302\u8d77awaitable\u3002\u8be5\u51fd\u6570\u4f1a\u4f20\u5165\u4e00\u4e2acoroutine_handle<\/code>\u7c7b\u578b\u7684\u53c2\u6570\u3002\u8fd9\u662f\u4e00\u4e2a\u7531\u7f16\u8bd1\u5668\u751f\u6210\u7684\u53d8\u91cf\u3002\u5728\u6b64\u51fd\u6570\u4e2d\u8c03\u7528handle.resume()\uff0c\u5c31\u53ef\u4ee5\u6062\u590d\u534f\u7a0b\u3002
\n3.\u00a0await_resume<\/code>\uff1a\u5f53\u534f\u7a0b\u91cd\u65b0\u8fd0\u884c\u65f6\uff0c\u4f1a\u8c03\u7528\u8be5\u51fd\u6570\u3002\u8fd9\u4e2a\u51fd\u6570\u7684\u8fd4\u56de\u503c\u5c31\u662fco_await<\/code>\u8fd0\u7b97\u7b26\u7684\u8fd4\u56de\u503c\u3002<\/p>\n
\u65e2\u7136\u8fd93\u4e2a\u51fd\u6570\u90fd\u641e\u6e05\u695a\u4e86\uff0c\u90a3\u6211\u4eec\u53ea\u8981\u81ea\u5df1\u5b9e\u73b0\u8fd93\u4e2a\u51fd\u6570\uff0c\u5c31\u53ef\u4ee5\u7528co_await<\/code>\u6765\u7b49\u5f85\u7ed3\u679c\u4e86\u3002co_await<\/code>\u5728\u534f\u7a0b\u4e2d\u4f7f\u7528\uff0c\u4f46\u662f\u534f\u7a0b\u7684\u5165\u53e3\u5fc5\u987b\u662f\u5728\u67d0\u4e2a\u51fd\u6570\u4e2d\uff0c\u51fd\u6570\u7684\u8fd4\u56de\u503c\u9700\u8981\u6ee1\u8db3Promise\u7684\u89c4\u8303\u3002\u6700\u7b80\u5355\u7684Promise\u5982\u4e0b\uff1a<\/p>\n
\n
struct<\/span> Task<\/span>\r\n{<\/span>\r\n    struct<\/span> promise_type<\/span> {<\/span>\r\n        auto<\/span> get_return_object<\/span>()<\/span> {<\/span> return<\/span> Task<\/span>{};<\/span> }<\/span>\r\n        auto<\/span> initial_suspend<\/span>()<\/span> {<\/span> return<\/span> std<\/span>::<\/span>experimental<\/span>::<\/span>suspend_never<\/span>{};<\/span> }<\/span>\r\n        auto<\/span> final_suspend<\/span>()<\/span> {<\/span> return<\/span> std<\/span>::<\/span>experimental<\/span>::<\/span>suspend_never<\/span>{};<\/span> }<\/span>\r\n        void<\/span> unhandled_exception<\/span>()<\/span> {<\/span> std<\/span>::<\/span>terminate<\/span>();<\/span> }<\/span>\r\n        void<\/span> return_void<\/span>()<\/span> {}<\/span>\r\n    };<\/span>\r\n};<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u4e0b\u9762\u6765\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u5728\u4f8b\u5b50\u4e2d\u5176\u5b9e\u8fd9\u4e2aTask\u9664\u4e86\u4f5c\u4e3a\u51fd\u6570\u8fd4\u56de\u503c\u4ee5\u5916\u6ca1\u5176\u5b83\u4f5c\u7528\u3002<\/p>\n
\u4ee5\u4e00\u4e2aadd\u51fd\u6570\u4e3a\u4f8b\uff1aint add100(int a)<\/code>\uff0c\u5c31\u662f\u5c06\u53c2\u6570a\u52a0\u4e0a100\uff0c\u5047\u8bbe\u8fd9\u4e2aadd\u975e\u5e38\u8017\u65f6\uff0c\u628a\u5b83\u8bbe\u8ba1\u6210\u4e00\u4e2a\u5f02\u6b65\u7684\u8c03\u7528\uff0c\u5f02\u6b65\u8c03\u7528\u7684\u7ed3\u679c\u5f53\u7136\u662f\u901a\u8fc7\u56de\u8c03\u51fd\u6570\u8fdb\u884c\u901a\u77e5\uff0c\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n
\n
using<\/span> call_back<\/span> =<\/span> std<\/span>::<\/span>function<\/span><<\/span>void<\/span>(<\/span>int<\/span>)<\/span>><\/span>;<\/span>\r\nvoid<\/span> Add100ByCallback<\/span>(<\/span>int<\/span> init<\/span>,<\/span> call_back<\/span> f<\/span>)<\/span> \/\/init\u662f\u4f20\u5165\u7684\u521d\u59cb\u503c\uff0cadd\u4e4b\u540e\u7684\u7ed3\u679c\u7531\u56de\u8c03\u51fd\u6570f\u901a\u77e5\r\n<\/span>{<\/span>\r\n    std<\/span>::<\/span>thread<\/span> t<\/span>([<\/span>init<\/span>,<\/span> f<\/span>]()<\/span> {<\/span>\r\n        std<\/span>::<\/span>this_thread<\/span>::<\/span>sleep_for<\/span>(<\/span>std<\/span>::<\/span>chrono<\/span>::<\/span>seconds<\/span>(<\/span>5<\/span>));<\/span> \/\/ sleep\u4e00\u4e0b\uff0c\u5047\u88c5\u5f88\u8017\u65f6\r\n<\/span>        f<\/span>(<\/span>init<\/span> +<\/span> 100<\/span>);<\/span> \/\/ \u8017\u65f6\u7684\u8ba1\u7b97\u5b8c\u6210\u4e86\uff0c\u8c03\u7528\u56de\u8c03\u51fd\u6570\r\n<\/span>    });<\/span>\r\n    t<\/span>.<\/span>detach<\/span>();<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u8fd9\u4e2a\u51fd\u6570\u7684\u8c03\u7528\u662f\u5927\u5bb6\u90fd\u719f\u6089\u7684\u5f02\u6b65\u51fd\u6570\u8c03\u7528\uff0c\u63d0\u4f9b\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u5c31\u53ef\u4ee5\u4e86\uff0c\u6bd4\u5982\u76f4\u63a5\u5c06\u5f97\u5230\u7684\u7ed3\u679c\u8f93\u51fa\uff1a<\/p>\n
\n
Add100ByCallback<\/span>(<\/span>5<\/span>,<\/span> [](<\/span>int<\/span> value<\/span>){<\/span> std<\/span>::<\/span>cout<\/span><<<\/span>\"get result: \"<\/span><<<\/span>value<\/span><<<\/span>\"<\/span>\\n<\/span>\"<\/span>;<\/span> });<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u73b0\u5728\u6211\u4eec\u628a\u901a\u8fc7\u56de\u8c03\u51fd\u6570\u7684\u5f02\u6b65\u8c03\u7528\u6539\u6210\u534f\u7a0b\uff0c\u534f\u7a0b\u548c\u666e\u901a\u7684\u56de\u8c03\u51fd\u6570\u4e0d\u540c\uff0c\u53ef\u4ee5\u76f4\u63a5\u5f97\u5230add\u4e4b\u540e\u7684\u7ed3\u679c\u3002\u666e\u901a\u7684\u56de\u8c03\u51fd\u6570\u662f\u4e0d\u53ef\u4ee5\u6709\u8fd4\u56de\u503c\u7684\u3002\u534f\u7a0b\u5982\u4e0b\uff1a<\/p>\n
\n
Task<\/span> Add100ByCoroutine<\/span>(<\/span>int<\/span> init<\/span>,<\/span> call_back<\/span> f<\/span>)<\/span>\r\n{<\/span>\r\n    int<\/span> ret<\/span> =<\/span> co_await<\/span> Add100AWaitable<\/span>(<\/span>init<\/span>);<\/span> \/\/co_await\u53ef\u4ee5\u6709\u8fd4\u56de\u503c\r\n<\/span>    f<\/span>(<\/span>ret<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u4e00\u6b21co_await\u4e0d\u80fd\u4f53\u73b0\u534f\u7a0b\u7684\u4f18\u8d8a\u6027\uff0c\u53ef\u4ee5\u8fde\u7eed\u8c03\u7528\u51e0\u6b21\uff0c\u5c06\u591a\u4e2a\u5f02\u6b65\u8c03\u7528\u8f6c\u5316\u6210\u4e32\u884c\u5316\u7684\u201c\u540c\u6b65\u201d\u8c03\u7528\uff0c\u50cf\u4e0b\u9762\u8fd9\u6837\uff0c\u7acb\u9a6c\u6709\u4ece\u539f\u59cb\u793e\u4f1a\u8fdb\u5165\u5230\u73b0\u4ee3\u793e\u4f1a\u7684\u611f\u89c9\uff0c\u4f5c\u4e3a\u4e00\u4e2a\u957f\u5e74\u5199\u5f02\u6b65\u7a0b\u5e8f\u7684\u7801\u519c\uff0c\u5e86\u5e78\u81ea\u5df1\u7ec8\u4e8e\u8fce\u6765\u4e86\u89e3\u653e\uff1a<\/p>\n
\n
Task<\/span> Add100ByCoroutine<\/span>(<\/span>int<\/span> init<\/span>,<\/span> call_back<\/span> f<\/span>)<\/span>\r\n{<\/span>\r\n    int<\/span> ret<\/span> =<\/span> co_await<\/span> Add100AWaitable<\/span>(<\/span>init<\/span>);<\/span>\r\n    ret<\/span> =<\/span> co_await<\/span> Add100AWaitable<\/span>(<\/span>ret<\/span>);<\/span>\r\n    ret<\/span> =<\/span> co_await<\/span> Add100AWaitable<\/span>(<\/span>ret<\/span>);<\/span>\r\n    f<\/span>(<\/span>ret<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u6839\u636e\u524d\u9762\u63d0\u5230\u76843\u4e2a\u51fd\u6570\uff0c\u6765\u5b9e\u73b0Add100AWaitable\u7c7b\u578b\uff1a<\/p>\n
\n
struct<\/span> Add100AWaitable<\/span>\r\n{<\/span>\r\n    Add100AWaitable<\/span>(<\/span>int<\/span> init<\/span>)<\/span>:<\/span>init_<\/span>(<\/span>init<\/span>)<\/span> {}<\/span>\r\n    bool<\/span> await_ready<\/span>()<\/span> const<\/span> {<\/span> return<\/span> false<\/span>;<\/span> }<\/span>\r\n    int<\/span> await_resume<\/span>()<\/span> {<\/span> return<\/span> result_<\/span>;<\/span> }<\/span>\r\n    void<\/span> await_suspend<\/span>(<\/span>std<\/span>::<\/span>experimental<\/span>::<\/span>coroutine_handle<\/span><><\/span> handle<\/span>)<\/span>\r\n    {<\/span>\r\n        \/\/ \u5b9a\u4e49\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\uff0c\u5728\u6b64\u51fd\u6570\u4e2d\u6062\u590d\u534f\u7a0b\r\n<\/span>        auto<\/span> f<\/span> =<\/span> [<\/span>handle<\/span>,<\/span> this<\/span>](<\/span>int<\/span> value<\/span>)<\/span> mutable<\/span> {<\/span>\r\n            result_<\/span> =<\/span> value<\/span>;<\/span>\r\n            handle<\/span>.<\/span>resume<\/span>();<\/span> \/\/ \u8fd9\u53e5\u662f\u5173\u952e\r\n<\/span>        };<\/span>\r\n        Add100ByCallback<\/span>(<\/span>init_<\/span>,<\/span> f<\/span>);<\/span> \r\n    }<\/span>\r\n    int<\/span> init_<\/span>;<\/span> \/\/ \u5c06\u53c2\u6570\u5b58\u5728\u8fd9\u91cc\r\n<\/span>    int<\/span> result_<\/span>;<\/span> \/\/ \u5c06\u8fd4\u56de\u503c\u5b58\u5728\u8fd9\u91cc\r\n<\/span>};<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u542f\u52a8\u4e00\u4e2a\u534f\u7a0b\u4e5f\u5f88\u7b80\u5355\uff0c\u76f4\u63a5\u8c03\u7528Add100ByCoroutine\u5373\u53ef\uff1a<\/p>\n
\n
Add100ByCoroutine<\/span>(<\/span>10<\/span>,<\/span> [](<\/span>int<\/span> value<\/span>){<\/span> std<\/span>::<\/span>cout<\/span><<<\/span>\"get result from coroutine: \"<\/span><<<\/span>value<\/span><<<\/span>\"<\/span>\\n<\/span>\"<\/span>;<\/span> });<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u6309\u7167\u8fd9\u4e2a\u601d\u8def\uff0c\u53ef\u4ee5\u5c06\u4efb\u610f\u5f02\u6b65\u51fd\u6570\u91c7\u7528Awaitable\u5305\u88c5\u7684\u65b9\u6cd5\u6539\u9020\u6210\u534f\u7a0b\uff0c\u6bd4\u5982\u8bf4\u4e0a\u9762\u4f8b\u5b50\u4e2d\u7684\u5f02\u6b65\u51fd\u6570Add100ByCallback\u3002<\/p>\n
\u6309\u7167\u672c\u6587\u4e2d\u7684\u4f8b\u5b50\u4f9d\u846b\u82a6\u753b\u74e2\uff0c\u7136\u540e\u518d\u7ed3\u5408\u7f51\u4e0a\u90a3\u4e9b\u4f3c\u61c2\u975e\u61c2\u7684\u6587\u6863\uff0c\u5404\u4f4dc++er\u90fd\u53ef\u4ee5\u5165\u95e8\u4e86\u3002\u4f46\u662fc++\u534f\u7a0b\u7684\u77e5\u8bc6\u975e\u5e38\u4e4b\u591a\uff0c\u5982\u4f55\u5728\u9700\u8981\u7684\u65f6\u5019\u63d0\u4f9b15\u4e2a\u51fd\u6570\u4e2d\u7684\u5176\u5b83\u51fd\u6570\u6765\u5b9a\u5236\u4e0d\u540c\u7684\u6d41\u7a0b\u3001\u5982\u4f55\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u5185\u5b58\u5206\u914d\u3001\u5982\u4f55\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u52a0\u9501\u7b49\u7b49\uff0c\u53ef\u4ee5\u8bf4\u662f\u9ad8\u624b\u53d1\u6325\u7684\u821e\u53f0\u3002\u5173\u4e8e\u534f\u7a0b\u7684\u8fdb\u4e00\u6b65\u5b66\u4e60\u53ef\u4ee5\u770b\u8fd9\u91cc\uff08\u5171\u67093\u7bc7\uff09<\/a>\u3002<\/p>\n
\u9644\u672c\u6587\u4f8b\u5b50\u6e90\u7801<\/a>\u3002<\/p>\n
\u6700\u540e\u9644\u4e0a\u6211\u5199\u7684\u5176\u5b83\u5173\u4e8e\u534f\u7a0b\u7684\u6587\u7ae0\u7684\u94fe\u63a5\uff0c\u540e\u7eed\u6709\u7a7a\u4f1a\u6301\u7eed\u66f4\u65b0<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
\u539f\u6587\u5730\u5740 \u968f\u7740coroutine ts\u6b63<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[118],"class_list":["post-4319","post","type-post","status-publish","format-standard","hentry","tag-02-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4319","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=4319"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4319\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=4319"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=4319"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=4319"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}