{"id":34,"date":"2022-11-23T20:56:16","date_gmt":"2022-11-23T12:56:16","guid":{"rendered":"https:\/\/www.road-trip.cc\/?p=34"},"modified":"2024-05-06T16:04:03","modified_gmt":"2024-05-06T08:04:03","slug":"sync-cond%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.road-trip.cc\/?p=34","title":{"rendered":"sync.Cond\u89e3\u6790"},"content":{"rendered":"\n<p>sync.Cond\u7528\u6765\u5b9e\u73b0\u6761\u4ef6\u53d8\u91cf\uff0c\u6761\u4ef6\u53d8\u91cf\u4e00\u822c\u7528\u6765\u534f\u8c03\u7ebf\u7a0b\u4f7f\u7528\uff0c\u672c\u4f8b\u5b50\u6a21\u62df\u767e\u7c73\u8d5b\u8dd1\uff0c\u9009\u624b\u5404\u5c31\u5404\u4f4d\u540e\u542c\u5230\u4fe1\u4ee4\u62a2\u54cd\u540e\u4e00\u8d77\u5f00\u59cb\u8dd1\uff0c\u53c2\u8003\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code has-tertiary-background-color has-background\" style=\"border-width:1px\"><code>package main\n\nimport (\n    \"fmt\"\n    \"sync\"\n    \"time\"\n)\n\nfunc main() {\n\n    var wg sync.WaitGroup\n    wg.Add(10)\n    cond := sync.NewCond(&amp;sync.Mutex{})\n    for i := 0; i &lt; 10; i++ {\n        go func(i int) {\n            fmt.Printf(\"Runner %d reay!!!\\n\", i)\n            cond.L.Lock()\n            cond.Wait()\n            cond.L.Unlock()\n            fmt.Printf(\"Runner %d is running...\\n\", i)\n            wg.Done()\n        }(i)\n    }\n\n    time.Sleep(5 * time.Second)\n    fmt.Println(\"Beng beng...\")\n    cond.Broadcast()\n    wg.Wait()\n}<\/code><\/pre>\n\n\n\n<p>sync.Mutex\u7528\u6765\u4fdd\u62a4\u6761\u4ef6\u53d8\u91cf\u3002<\/p>\n\n\n\n<p>sync.Signal\u4e00\u6b21\u53ef\u4ee5\u5524\u9192\u4e00\u4e2agoroutine\uff0c\u53c2\u8003\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code has-tertiary-background-color has-background\" style=\"border-width:1px\"><code>package main\n\nimport (\n    \"fmt\"\n    \"sync\"\n    \"time\"\n)\n\nfunc main() {\n\n    var wg sync.WaitGroup\n    wg.Add(10)\n    cond := sync.NewCond(&amp;sync.Mutex{})\n    for i := 0; i &lt; 10; i++ {\n        go func(i int) {\n            fmt.Printf(\"Runner %d reay!!!\\n\", i)\n            cond.L.Lock()\n            cond.Wait()\n            cond.L.Unlock()\n            fmt.Printf(\"Runner %d is running...\\n\", i)\n            wg.Done()\n        }(i)\n    }\n\n    time.Sleep(2 * time.Second)\n\n    for i := 0; i &lt; 10; i++ {\n        cond.Signal()\n        time.Sleep(time.Second)\n        fmt.Printf(\"signal %d\\n\", i)\n    }\n    wg.Wait()\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>sync.Cond\u7528\u6765\u5b9e\u73b0\u6761\u4ef6\u53d8\u91cf\uff0c\u6761\u4ef6\u53d8\u91cf\u4e00\u822c\u7528\u6765\u534f\u8c03\u7ebf\u7a0b\u4f7f\u7528\uff0c\u672c\u4f8b\u5b50\u6a21\u62df\u767e\u7c73\u8d5b\u8dd1\uff0c\u9009\u624b\u5404\u5c31\u5404\u4f4d\u540e\u542c\u5230\u4fe1\u4ee4\u62a2 &#8230; <a title=\"sync.Cond\u89e3\u6790\" class=\"read-more\" href=\"https:\/\/www.road-trip.cc\/?p=34\" aria-label=\"\u9605\u8bfb sync.Cond\u89e3\u6790\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[21,15,13,14,17],"class_list":["post-34","post","type-post","status-publish","format-standard","hentry","category-7","tag-cond","tag-gl","tag-go","tag-golang","tag-sync"],"_links":{"self":[{"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/posts\/34","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=34"}],"version-history":[{"count":2,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/posts\/34\/revisions"}],"predecessor-version":[{"id":36,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/posts\/34\/revisions\/36"}],"wp:attachment":[{"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=34"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=34"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=34"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}