{"id":1038,"date":"2021-08-15T11:04:00","date_gmt":"2021-08-15T03:04:00","guid":{"rendered":"https:\/\/www.rayer.idv.tw\/blog\/?p=1038"},"modified":"2021-08-26T13:52:23","modified_gmt":"2021-08-26T05:52:23","slug":"%e6%b2%92%e5%8e%9f%e7%94%9fthread-pool%ef%bc%8c%e9%82%a3%e6%88%91%e5%80%91%e8%87%aa%e8%a3%bdworker-group","status":"publish","type":"post","link":"https:\/\/www.rayer.idv.tw\/blog\/?p=1038","title":{"rendered":"\u6c92\u539f\u751fThread Pool\uff0c\u90a3\u6211\u5011\u81ea\u88fdWorker Group"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u5148\u770b\u770b\u4e0a\u4e00\u7bc7<a href=\"https:\/\/www.rayer.idv.tw\/blog\/?p=1023\">\u6c92Thread Pool\uff0cLimiter\u4e5f\u597d\uff1f\u771f\u7684\u55ce\uff1f<\/a> \u4f86\u500b\u524d\u60c5\u63d0\u8981\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Worker Group\u5176\u5be6\u57fa\u672c\u6982\u5ff5\u8ddfThread Pool\u5f88\u50cf\uff0c\u5c31\u662f:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u4e00\u5806Worker\u5728\u8dd1\uff0c\u7b49\u8457\u63a5\u6536\u53c3\u6578\u4e26\u4e14\u8f38\u51fa\u7d50\u679c<\/li><li>\u55ae\u4e00Worker\u64c1\u6709\u4e00\u500b\u7528\u4f86\u8f38\u5165\u53c3\u6578\u7684channel\uff0c\u4ee5\u53ca\u4e00\u500b\u7528\u4ee5\u8f38\u51fa\u7d50\u679c\u7684channel<\/li><li>Worker\u53ef\u88abcontext\u7684Done()\u7d42\u7d50\uff0c\u6216\u8005\uff1a<\/li><li>\u53ef\u88abWaitGroup\u7d42\u7d50<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u904e\u7531\u65bcgo\u6c92\u6709generic(\u76ee\u524d\u7248\u672c\u662f1.16\uff0c\u57281.17\/1.18\u6703\u652f\u63f4)\uff0c\u6240\u4ee5\u9019\u5169\u500bchannel\u90fd\u6c92\u8fa6\u6cd5\u5beb\u5f97\u5f88\u6f02\u4eae\uff0c\u9019\u4e5f\u662f\u5927\u591a\u6578Worker Pool\u8981\u4e0d\u5c31\u662f\u5f97\u7528<code>chan interface{}<\/code>\u4f86\u5beb\uff0c\u4e0d\u7136\u5c31\u662f\u5beb\u4e0d\u51fa\u4f86\u3002\u4e0d\u904eWorker Group\u9019\u7a2e\u6771\u897f\u5176\u5be6\u5920\u8f15\u91cf\uff0c\u8f15\u91cf\u5230\u5176\u5be6\u81ea\u5df1\u6253\u9020\u90fd\u662f\u53ef\u4ee5\u7684\uff0c\u9019\u908a\u5c31\u4ecb\u7d39\u4e00\u4e0b\u600e\u9ebc\u81ea\u5df1\u6253\u9020\u4e00\u500bWorker Pool\uff0c\u4ee5\u53ca\u63ed\u79d8\u70ba\u4ec0\u9ebc\u5f88\u591aCLI\/UI\u90fd\u9700\u8981\u6709\u4e00\u500b\u81ea\u5df1\u7684UI Thread(go\u6c92thread\uff0c\u6240\u4ee5\u7a31\u70baUI routine\u5427\uff09\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<p class=\"wp-block-paragraph\">\u6240\u4ee5\u6211\u5011\u53ef\u4ee5\u5047\u8a2d\u4e00\u500b\u6d41\u7a0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>\u7522\u751f20\u500bworker thread\uff0c\u7528\u4e00\u500bchannel\u628a\u53c3\u6578\u50b3\u9032\u53bb\uff0c\u7528\u4e00\u500bchannel\u63a5\u51fa\u53c3\u6578<\/li><li>\u628a\u53c3\u6578\u585e\u9032channel<\/li><li>\u7528WaitGroup\u4f86\u63a7\u5236\u6d41\u7a0b<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u90a3\u770b\u8d77\u4f86\u7684code\u61c9\u8a72\u5927\u81f4\u4e0a\u6703\u50cf\u662f\u9019\u6a23<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"go\" class=\"language-go line-numbers\">\/\/\u5047\u8a2d\u8cc7\u6599\u5f9ecsv\u8b80\u5165 \ndata := GetFromCSV(\"laz_prd.csv\", 1)\n\/\/\u8f38\u5165\u53c3\u6578\u7528\u7684channel\nc := make(chan string, len(data)) \n\/\/\u5b58\u653e\u7d50\u679c\u7528\u7684channel\nr := make(chan ProbeResult, len(data))\n\/\/\u7528\u4ee5\u63a7\u5236\u6d41\u7a0b\u7684wait group\nvar wg sync.WaitGroup\nwg.Add(len(data))\n\nfor i := 0; i &lt; WORKER_SIZE; i++ {\n\t\/\/\u50b3\u5165\u8a72\u8f38\u5165\u7528channel \u8f38\u51fa\u7528channel\u4ee5\u53cawaitgroup\u7d66worker\n\tgo worker(c, r, &amp;wg) \n}\n\/\/\u628a\u53c3\u6578\u704c\u9032channel\u8b93worker\u63a5\u6536\nfor _, pid := range data {\n\tc &lt;- pid\n}\nwg.Wait()\n\/\/\u5370\u51fa\u7d50\u679c\nfor {\n\tselect {\n\t\tcase result := &lt;- r:\n\t\t\tPrintResult(r)\n\t\tdefault: \/\/\u9019\u908a\u7684default\u662f\u5fc5\u8981\u7684\uff0c\u4e0d\u7136channel r\u8b80\u7a7a\u4e86\u5c31\u6703\u5361\u5728select\n\t\t\tbreak\n\t}\n}\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u5011\u53ef\u4ee5\u4f86\u8a2d\u8a08\u4e00\u4e0bworker\uff0c\u61c9\u8a72\u5927\u81f4\u4e0a\u6703\u9577\u9019\u6a23\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"go\" class=\"language-go line-numbers\">func worker(p chan string, r chan string, wg *sync.WaitGroup) {\n\tfor {\n\t\tresult := &amp;Result{}\n\t\tselect {\n\t\t\tcase input := &lt;-p:\n\t\t\t\tr &lt;- CreateResultFromInput(input)\n\t\t\t\twg.Done()\n\t\t}\n\t}\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5176\u5be6\u9019\u5c31\u662f\u4e00\u500b\u6700\u57fa\u672c\u7684Worker Group\u4e86\uff0c\u6709<code>WORKER_SIZE<\/code> \u500bWorker\u5728\u8655\u7406\u8cc7\u6599\u3002\u4e0d\u904e\uff0c\u9019\u986f\u7136\u6709\u4e00\u9ede\u554f\u984c\uff0c\u5c31\u662f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>\u5982\u679c\u4ee5\u4e00\u500bApplication\u4f86\u8b1b\u9019\u6a23\u662fok\u7684\uff0c\u7a0b\u5f0f\u8dd1\u5b8c\u5c31\u7b97\u9084\u6709\u6b98\u7559\u7684go routine\uff0c\u554f\u984c\u4e5f\u4e0d\u5927\uff0c\u56e0\u70ba\u6703\u96a8\u8457\u7a0b\u5f0f\u7d50\u675f\u800c\u6d88\u6ec5\u3002\u4f46\u662f\u5982\u679c\u662f\u4e00\u500bService\u7684\u8a71\u9019\u6a23\u986f\u7136\u6703\u6709routine leak\u7684\u554f\u984c<\/li><li>\u9019\u986f\u7136\u662f\u6c92\u8fa6\u6cd5\u908a\u8dd1\u908a\u5370\uff0c\u4e00\u5b9a\u5f97\u628a\u6240\u6709\u6771\u897f\u90fd\u8655\u7406\u5b8c\u624d\u6703\u4e00\u53e3\u6c23\u5370\u51fa\u4f86\u3002<\/li><li>(Optional) \u6c92sleep\uff0c\u5c31\u5982\u540c\u4e0a\u4e00\u7bc7\u6240\u63d0\u5230\u7684\u554f\u984c\uff0c\u6703\u88ab\u7576DDoS<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e00\u500b\u7684\u8a71\u5176\u5be6\u7528context\u53ef\u4ee5\u89e3\u6c7a\u9019\u554f\u984c\uff0c\u7b2c\u4e8c\u500b\u7684\u8a71\u89e3\u6cd5\u5f88\u591a\uff0c\u6709\u4e00\u4e9b\u4eba\u6703\u9078\u5728wg.Wait()\u524d\u9762\u518d\u958b\u4e00\u500bfor + select\u53bb\u63a5\uff0c\u7d50\u675f\u689d\u4ef6\u5c31\u8a2d\u300c\u63a5\u53d7\u5230 <code>len(data)<\/code> \u500b\u7d50\u679c\u300d\u5c31\u597d\uff0c\u4e0d\u904e\u6bd4\u8f03\u901a\u7528\u7684\u89e3\u6cd5\u662f\u984d\u5916\u958b\u4e00\u500bgo routine\u5c08\u9580\u8655\u7406UI\u554f\u984c\u3002\u7528context\u7684\u8a71\uff0c\u6574\u500bcode\u5927\u6982\u9577\u9019\u6a23\uff0c\u5c31\u4e0d\u53e6\u5916\u518d\u8cbc\u4e86<\/p>\n\n\n\n<pre title=\"in main.go\" class=\"wp-block-code\"><code lang=\"go\" class=\"language-go\">data := GetFromCSV(\"laz_prd.csv\", 1)\nc := make(chan string, len(data)) \nr := make(chan ProbeResult, len(data))\nvar wg sync.WaitGroup\nwg.Add(len(data))\n\/\/\u589e\u52a0\u4e00\u500bcontext with cancel\n\/\/\u7b2c\u4e8c\u500b\u53c3\u6578cancel\u662f\u4e00\u500bfunc\uff0c\u57f7\u884c\u4ed6\u4fbf\u53ef\u4ee5\u8b93\u8a72context\u50b3\u51factx.Done()\u7684\u4fe1\u865f\uff0c\u544a\u8a34Worker\u8aaa\u4f60\u8a72\u6b7b\u4e86\nctx, cancel := context.WithCancel(context.Background())\n\nfor i := 0; i &lt; WORKER_SIZE; i++ {\n\t\/\/\u50b3\u5165\u8a72context\u7d66worker\n\tgo worker(ctx, c, r, &amp;wg) \n}\n\nfor _, pid := range data {\n\tc &lt;- pid\n}\nwg.Wait()\n\/\/\u50b3\u5165ctx.Done()\u7d66\u6bcf\u4e00\u500bworker\ncancel()<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7136\u5f8cWorker\u4e5f\u8981\u5be6\u4f5c\u80fd\u5c0dctx.Done()\u53cd\u61c9\u7684\u81ea\u6bba\u6a5f\u5236<\/p>\n\n\n\n<pre title=\"worker.go\" class=\"wp-block-code\"><code lang=\"go\" class=\"language-go\">\/\/\u7c3d\u540d\u8981\u984d\u5916\u80fd\u6536context\nfunc worker(ctx context.Context, p chan string, r chan string, wg *sync.WaitGroup) {\n\tfor {\n\t\tresult := &amp;Result{}\n\t\tselect {\n\t\t\t\/\/\u81ea\u6bba\u6307\u4ee4\uff0c\u6536\u5230\u5c31\u6703\u8df3\u51fa\u56de\u5708\u7d50\u675f\u9019\u500bworker\n\t\t\tcase ctx&lt;-Done():\n\t\t\t\tbreak\n\n\t\t\tcase input := &lt;-p:\n\t\t\t\tr &lt;- CreateResultFromInput(input)\n\t\t\t\ttime.Sleep(200 * time.Millisecond) \/\/\u7d66\u500bsleep\u907f\u514drequest\u592a\u5147\n\t\t\t\twg.Done()\n\t\t}\n\t}\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u9019\u6a23\uff0cworker\u5c31\u80fd\u6b63\u78ba\u88ab\u56de\u6536\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53ef\u4ee5\u5148\u770b\u770b\u4e0a\u4e00\u7bc7\u6c92Thread Pool\uff0cLimiter\u4e5f\u597d\uff1f\u771f\u7684\u55ce\uff1f \u4f86\u500b\u524d\u60c5\u63d0\u8981\u3002 Worker Group\u5176\u5be6\u57fa\u672c\u6982\u5ff5\u8ddfThread Pool\u5f88\u50cf\uff0c\u5c31\u662f: \u4e00\u5806Worker\u5728\u8dd1\uff0c\u7b49\u8457\u63a5\u6536\u53c3\u6578\u4e26\u4e14\u8f38\u51fa\u7d50\u679c \u55ae\u4e00Worker\u64c1\u6709\u4e00\u500b\u7528\u4f86\u8f38\u5165\u53c3\u6578\u7684channel\uff0c\u4ee5\u53ca\u4e00\u500b\u7528\u4ee5\u8f38\u51fa\u7d50\u679c\u7684channel Worker\u53ef\u88abcontext\u7684Done()\u7d42\u7d50\uff0c\u6216\u8005\uff1a \u53ef\u88abWaitGroup\u7d42\u7d50 \u4e0d\u904e\u7531\u65bcgo\u6c92\u6709generic(\u76ee\u524d\u7248\u672c\u662f1.16\uff0c\u57281.17\/1.18\u6703\u652f\u63f4)\uff0c\u6240\u4ee5\u9019\u5169\u500bchannel\u90fd\u6c92\u8fa6\u6cd5\u5beb\u5f97\u5f88\u6f02\u4eae\uff0c\u9019\u4e5f\u662f\u5927\u591a\u6578Worker Pool\u8981\u4e0d\u5c31\u662f\u5f97\u7528chan interface{}\u4f86\u5beb\uff0c\u4e0d\u7136\u5c31\u662f\u5beb\u4e0d\u51fa\u4f86\u3002\u4e0d\u904eWorker Group\u9019\u7a2e\u6771\u897f\u5176\u5be6\u5920\u8f15\u91cf\uff0c\u8f15\u91cf\u5230\u5176\u5be6\u81ea\u5df1\u6253\u9020\u90fd\u662f\u53ef\u4ee5\u7684\uff0c\u9019\u908a\u5c31\u4ecb\u7d39\u4e00\u4e0b\u600e\u9ebc\u81ea\u5df1\u6253\u9020\u4e00\u500bWorker Pool\uff0c\u4ee5\u53ca\u63ed\u79d8\u70ba\u4ec0\u9ebc\u5f88\u591aCLI\/UI\u90fd\u9700\u8981\u6709\u4e00\u500b\u81ea\u5df1\u7684UI Thread(go\u6c92thread\uff0c\u6240\u4ee5\u7a31\u70baUI routine\u5427\uff09\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"link","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[38,84],"tags":[156,157,86,159,160],"class_list":["post-1038","post","type-post","status-publish","format-link","hentry","category-code","category-84","tag-concurrency","tag-coroutine","tag-golang","tag-thread-pool","tag-worker-group","post_format-post-format-link"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u6c92\u539f\u751fThread Pool\uff0c\u90a3\u6211\u5011\u81ea\u88fdWorker Group - Fox Nest<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rayer.idv.tw\/blog\/?p=1038\" \/>\n<meta property=\"og:locale\" content=\"zh_TW\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u6c92\u539f\u751fThread Pool\uff0c\u90a3\u6211\u5011\u81ea\u88fdWorker Group - Fox Nest\" \/>\n<meta property=\"og:description\" content=\"\u53ef\u4ee5\u5148\u770b\u770b\u4e0a\u4e00\u7bc7\u6c92Thread Pool\uff0cLimiter\u4e5f\u597d\uff1f\u771f\u7684\u55ce\uff1f \u4f86\u500b\u524d\u60c5\u63d0\u8981\u3002 Worker Group\u5176\u5be6\u57fa\u672c\u6982\u5ff5\u8ddfThread Pool\u5f88\u50cf\uff0c\u5c31\u662f: \u4e00\u5806Worker\u5728\u8dd1\uff0c\u7b49\u8457\u63a5\u6536\u53c3\u6578\u4e26\u4e14\u8f38\u51fa\u7d50\u679c \u55ae\u4e00Worker\u64c1\u6709\u4e00\u500b\u7528\u4f86\u8f38\u5165\u53c3\u6578\u7684channel\uff0c\u4ee5\u53ca\u4e00\u500b\u7528\u4ee5\u8f38\u51fa\u7d50\u679c\u7684channel Worker\u53ef\u88abcontext\u7684Done()\u7d42\u7d50\uff0c\u6216\u8005\uff1a \u53ef\u88abWaitGroup\u7d42\u7d50 \u4e0d\u904e\u7531\u65bcgo\u6c92\u6709generic(\u76ee\u524d\u7248\u672c\u662f1.16\uff0c\u57281.17\/1.18\u6703\u652f\u63f4)\uff0c\u6240\u4ee5\u9019\u5169\u500bchannel\u90fd\u6c92\u8fa6\u6cd5\u5beb\u5f97\u5f88\u6f02\u4eae\uff0c\u9019\u4e5f\u662f\u5927\u591a\u6578Worker Pool\u8981\u4e0d\u5c31\u662f\u5f97\u7528chan interface{}\u4f86\u5beb\uff0c\u4e0d\u7136\u5c31\u662f\u5beb\u4e0d\u51fa\u4f86\u3002\u4e0d\u904eWorker 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