{"id":3969,"date":"2025-07-28T20:43:28","date_gmt":"2025-07-28T12:43:28","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3969"},"modified":"2025-07-28T20:43:28","modified_gmt":"2025-07-28T12:43:28","slug":"wait-%e5%92%8c-sleep%e6%98%af%e5%90%a6%e4%bc%9a%e8%a7%a6%e5%8f%91%e9%94%81%e7%9a%84%e9%87%8a%e6%94%be%e4%bb%a5%e5%8f%8acpu%e8%b5%84%e6%ba%90%e7%9a%84%e9%87%8a%e6%94%be%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/07\/28\/wait-%e5%92%8c-sleep%e6%98%af%e5%90%a6%e4%bc%9a%e8%a7%a6%e5%8f%91%e9%94%81%e7%9a%84%e9%87%8a%e6%94%be%e4%bb%a5%e5%8f%8acpu%e8%b5%84%e6%ba%90%e7%9a%84%e9%87%8a%e6%94%be%ef%bc%9f\/","title":{"rendered":"wait()\u00a0\u548c\u00a0sleep()\u662f\u5426\u4f1a\u89e6\u53d1\u9501\u7684\u91ca\u653e\u4ee5\u53caCPU\u8d44\u6e90\u7684\u91ca\u653e\uff1f"},"content":{"rendered":"\n<p>\u8fd9\u662f Java \u591a\u7ebf\u7a0b\u4e2d\u5e38\u89c1\u4e14\u975e\u5e38\u91cd\u8981\u7684\u9762\u8bd5\u548c\u5b9e\u8df5\u95ee\u9898\u3002\u6211\u4eec\u6765\u4ece\u5e95\u5c42\u673a\u5236\u89d2\u5ea6\u5168\u9762\u5206\u6790\uff1a<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u95ee\u9898\u7b80\u5316\u7248\u56de\u7b54\uff1a<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u65b9\u6cd5<\/th><th>\u662f\u5426\u91ca\u653e<strong>\u9501\uff08monitor\uff09<\/strong><\/th><th>\u662f\u5426\u91ca\u653e<strong>CPU \u8d44\u6e90\uff08\u5373\u4e0d\u5360\u7528 CPU\uff09<\/strong><\/th><\/tr><\/thead><tbody><tr><td><code>wait()<\/code><\/td><td>\u662f\uff0c\u4f1a\u91ca\u653e\u9501<\/td><td>\u662f\uff0c\u7ebf\u7a0b\u8fdb\u5165 WAITING \u72b6\u6001\uff0c\u6682\u505c\u6267\u884c<\/td><\/tr><tr><td><code>sleep()<\/code><\/td><td>\u5426\uff0c\u4e0d\u91ca\u653e\u9501<\/td><td>\u662f\uff0c\u7ebf\u7a0b\u8fdb\u5165 TIMED_WAITING \u72b6\u6001\uff0c\u6682\u505c\u6267\u884c<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u4ec0\u4e48\u662f\u201c\u91ca\u653e\u9501\u201d\u548c\u201c\u91ca\u653e CPU\u201d\uff1f<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u91ca\u653e\u9501\uff08monitor\uff09<\/strong>\uff1a\u8868\u793a\u7ebf\u7a0b\u6682\u505c\u8fd0\u884c\u65f6\uff0c\u4f1a\u4e0d\u4f1a\u628a\u5b83\u6301\u6709\u7684\u5bf9\u8c61\u76d1\u89c6\u5668\u9501\uff08\u4f8b\u5982 synchronized\uff09\u91ca\u653e\u7ed9\u5176\u4ed6\u7ebf\u7a0b\u3002<\/li>\n\n\n\n<li><strong>\u91ca\u653e CPU<\/strong>\uff1a\u8868\u793a\u7ebf\u7a0b\u6682\u505c\u8fd0\u884c\uff0c\u8fdb\u5165\u975e\u8fd0\u884c\u6001\uff08RUNNABLE\uff09\uff0c\u8ba9\u51fa CPU \u65f6\u95f4\u7247\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001<code>wait()<\/code> \u7684\u884c\u4e3a\u5206\u6790<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6982\u8ff0\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>wait()<\/code> \u662f Object \u7c7b\u7684\u65b9\u6cd5\uff0c\u53ea\u80fd\u5728\u540c\u6b65\u5757 (<code>synchronized<\/code>) \u4e2d\u8c03\u7528\u3002<\/li>\n\n\n\n<li>\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u8c03\u7528 <code>wait()<\/code>\uff1a<\/li>\n\n\n\n<li>\u5f53\u524d\u7ebf\u7a0b\u4f1a\u7acb\u5373 <strong>\u91ca\u653e\u9501<\/strong><\/li>\n\n\n\n<li>\u7ebf\u7a0b\u8fdb\u5165 <strong>WAITING<\/strong> \u72b6\u6001<\/li>\n\n\n\n<li>\u5fc5\u987b\u7531\u5176\u4ed6\u7ebf\u7a0b\u901a\u8fc7 <code>notify()<\/code> \u6216 <code>notifyAll()<\/code> \u6765\u5524\u9192<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u793a\u4f8b\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>synchronized (obj) {\n    obj.wait();  \/\/ \u7ebf\u7a0b\u6682\u505c\u5e76\u91ca\u653e obj \u7684\u9501\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u72b6\u6001\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b49\u5f85\u72b6\u6001\uff08<code>WAITING<\/code>\uff09<\/li>\n\n\n\n<li>\u4e0d\u6d88\u8017 CPU\uff0c\u7ebf\u7a0b\u6682\u505c\u8fd0\u884c<\/li>\n\n\n\n<li>\u4f1a\u91ca\u653e\u5bf9\u8c61\u9501\uff0c\u8ba9\u5176\u4ed6\u7ebf\u7a0b\u53ef\u8fdb\u5165\u540c\u6b65\u5757<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001<code>sleep()<\/code> \u7684\u884c\u4e3a\u5206\u6790<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6982\u8ff0\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>sleep()<\/code> \u662f <code>Thread<\/code> \u7c7b\u7684\u9759\u6001\u65b9\u6cd5\uff0c\u4e0d\u4f9d\u8d56\u9501<\/li>\n\n\n\n<li>\u5f53\u524d\u7ebf\u7a0b<strong>\u6682\u505c\u4e00\u6bb5\u65f6\u95f4<\/strong>\uff08\u6beb\u79d2\/\u7eb3\u79d2\uff09<\/li>\n\n\n\n<li>\u4e0d\u91ca\u653e\u9501\uff0c\u5373\u4fbf\u5f53\u524d\u7ebf\u7a0b\u5728 <code>synchronized<\/code> \u5757\u4e2d<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u793a\u4f8b\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>synchronized (obj) {\n    Thread.sleep(1000); \/\/ \u4e0d\u91ca\u653e obj \u9501\uff0c\u53ea\u662f\u4e0d\u8fd0\u884c\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u72b6\u6001\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8ba1\u65f6\u7b49\u5f85\u72b6\u6001\uff08<code>TIMED_WAITING<\/code>\uff09<\/li>\n\n\n\n<li>\u4e0d\u6d88\u8017 CPU\uff0c\u4f46<strong>\u4ecd\u7136\u6301\u6709\u9501<\/strong><\/li>\n\n\n\n<li>\u5176\u4ed6\u7ebf\u7a0b\u4f9d\u7136\u65e0\u6cd5\u83b7\u53d6\u8be5\u9501<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u76f4\u89c2\u5bf9\u6bd4\u56fe<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>            \u662f\u5426\u91ca\u653e\u9501       \u662f\u5426\u8ba9\u51fa CPU\nwait()        \u662f                 \u662f\nsleep()       \u5426                 \u662f<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001\u9002\u7528\u573a\u666f\u5bf9\u6bd4<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u573a\u666f<\/th><th>\u63a8\u8350\u65b9\u6cd5<\/th><th>\u7406\u7531<\/th><\/tr><\/thead><tbody><tr><td>\u7ebf\u7a0b\u95f4\u901a\u4fe1\/\u534f\u8c03<\/td><td><code>wait()<\/code><\/td><td>\u53ef\u91ca\u653e\u9501\u5e76\u7b49\u5f85\u901a\u77e5\uff0c\u9002\u7528\u4e8e\u751f\u4ea7\u8005\u6d88\u8d39\u8005\u7b49\u573a\u666f<\/td><\/tr><tr><td>\u7b80\u5355\u5ef6\u8fdf\/\u5b9a\u65f6<\/td><td><code>sleep()<\/code><\/td><td>\u4e0d\u9700\u8981\u9501\u64cd\u4f5c\uff0c\u53ea\u9700\u7ebf\u7a0b\u6682\u505c\u4e00\u6bb5\u65f6\u95f4<\/td><\/tr><tr><td>\u5728 synchronized \u4e2d\u6682\u505c\u7ebf\u7a0b<\/td><td><code>sleep()<\/code><\/td><td>\u4fdd\u6301\u9501\u7684\u573a\u666f\u9700\u8981 <code>sleep()<\/code>\uff0c\u907f\u514d\u903b\u8f91\u4e2d\u65ad<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001\u53c2\u8003\u8d44\u6599<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/lang\/Object.html#wait--\">Java\u5b98\u65b9\u6587\u6863 &#8211; Object.wait()<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/lang\/Thread.html#sleep-long-\">Java\u5b98\u65b9\u6587\u6863 &#8211; Thread.sleep()<\/a><\/li>\n\n\n\n<li>\u300aJava \u5e76\u53d1\u7f16\u7a0b\u5b9e\u6218\u300b &#8211; \u7b2c 3 \u7ae0\uff1a\u7ebf\u7a0b\u534f\u8c03<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e03\u3001\u603b\u7ed3\u56de\u987e<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u65b9\u6cd5<\/th><th>\u662f\u5426\u91ca\u653e\u9501<\/th><th>\u662f\u5426\u91ca\u653e CPU<\/th><th>\u4e3b\u8981\u7528\u9014<\/th><\/tr><\/thead><tbody><tr><td><code>wait()<\/code><\/td><td>\u662f<\/td><td>\u662f<\/td><td>\u7ebf\u7a0b\u95f4\u534f\u8c03\u4e0e\u901a\u4fe1<\/td><\/tr><tr><td><code>sleep()<\/code><\/td><td>\u5426<\/td><td>\u662f<\/td><td>\u5355\u7ebf\u7a0b\u5ef6\u8fdf\u7b49\u5f85\uff0c\u4e0d\u6d89\u53ca\u9501<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u662f Java \u591a\u7ebf\u7a0b\u4e2d\u5e38\u89c1\u4e14\u975e\u5e38\u91cd\u8981\u7684\u9762\u8bd5\u548c\u5b9e\u8df5\u95ee\u9898\u3002\u6211\u4eec\u6765\u4ece\u5e95\u5c42\u673a\u5236\u89d2\u5ea6\u5168\u9762\u5206\u6790\uff1a \u95ee\u9898\u7b80\u5316\u7248\u56de\u7b54\uff1a \u65b9\u6cd5 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3970,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68,86],"tags":[],"class_list":["post-3969","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java","category-java-"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3969","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3969"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3969\/revisions"}],"predecessor-version":[{"id":3971,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3969\/revisions\/3971"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3970"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3969"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3969"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}