{"id":3043,"date":"2024-03-28T13:50:38","date_gmt":"2024-03-28T05:50:38","guid":{"rendered":"https:\/\/www.talktop.cn\/?p=3043"},"modified":"2024-12-16T11:20:04","modified_gmt":"2024-12-16T03:20:04","slug":"juc%e5%b9%b6%e5%8f%91%e7%bc%96%e7%a8%8b%e5%8c%85%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/www.talktop.cn\/?p=3043","title":{"rendered":"Java JUC\u5e76\u53d1\u7f16\u7a0b\u5305\u4ecb\u7ecd"},"content":{"rendered":"\n<p>Java\u5e76\u53d1\u7f16\u7a0b\u5728\u591a\u6838\u5fc3\u5904\u7406\u5668\u65f6\u4ee3\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002Java Concurrency Utilities (JUC) \u5e76\u53d1\u7f16\u7a0b\u5305\u4e3a\u5f00\u53d1\u4eba\u5458\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u5de5\u5177\u548c\u6846\u67b6\u6765\u7b80\u5316\u5e76\u53d1\u7f16\u7a0b\u7684\u590d\u6742\u6027\u3002\u672c\u6587\u5c06\u4ecb\u7ecdJava JUC\u7684\u6838\u5fc3\u529f\u80fd\u3001\u4e3b\u8981\u7c7b\u7ee7\u627f\u5173\u7cfb\u3001\u5b9e\u73b0\u539f\u7406\uff0c\u5e76\u901a\u8fc7\u5177\u4f53\u793a\u4f8b\u8bf4\u660e\u5176\u7528\u6cd5\u548c\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">JUC\u7684\u6838\u5fc3\u529f\u80fd<\/h5>\n\n\n\n<p>Java JUC\u63d0\u4f9b\u4e86\u591a\u79cd\u6838\u5fc3\u529f\u80fd\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5e76\u53d1\u5de5\u5177\u7c7b<\/strong>\uff1a\u5305\u62ec<code>CountDownLatch<\/code>\u3001<code>Semaphore<\/code>\u3001<code>CyclicBarrier<\/code>\u7b49\uff0c\u7528\u4e8e\u63a7\u5236\u7ebf\u7a0b\u5e76\u53d1\u6267\u884c\u7684\u540c\u6b65\u5de5\u5177\u3002<\/li>\n\n\n\n<li><strong>\u7ebf\u7a0b\u6c60<\/strong>\uff1a\u901a\u8fc7<code>Executor<\/code>\u6846\u67b6\u63d0\u4f9b\u7684<code>ExecutorService<\/code>\u3001<code>ThreadPoolExecutor<\/code>\u7b49\u7c7b\uff0c\u5b9e\u73b0\u7ebf\u7a0b\u7684\u7ba1\u7406\u3001\u8c03\u5ea6\u548c\u590d\u7528\uff0c\u63d0\u9ad8\u5e76\u53d1\u6027\u80fd\u3002<\/li>\n\n\n\n<li><strong>\u539f\u5b50\u53d8\u91cf\u7c7b<\/strong>\uff1a\u4f8b\u5982<code>AtomicInteger<\/code>\u3001<code>AtomicLong<\/code>\u7b49\uff0c\u63d0\u4f9b\u4e86\u7ebf\u7a0b\u5b89\u5168\u7684\u539f\u5b50\u64cd\u4f5c\uff0c\u907f\u514d\u4e86\u4f20\u7edf\u7684\u9501\u673a\u5236\u5e26\u6765\u7684\u6027\u80fd\u635f\u8017\u3002<\/li>\n\n\n\n<li><strong>\u5e76\u53d1\u96c6\u5408\u7c7b<\/strong>\uff1a\u4f8b\u5982<code>ConcurrentHashMap<\/code>\u3001<code>CopyOnWriteArrayList<\/code>\u7b49\uff0c\u63d0\u4f9b\u4e86\u7ebf\u7a0b\u5b89\u5168\u7684\u96c6\u5408\u7c7b\uff0c\u652f\u6301\u5e76\u53d1\u8bfb\u5199\u64cd\u4f5c\u3002<\/li>\n<\/ol>\n\n\n\n<h5 class=\"wp-block-heading\">\u4e3b\u8981\u7c7b\u7ee7\u627f\u5173\u7cfb<\/h5>\n\n\n\n<p>JUC\u4e2d\u7684\u4e3b\u8981\u7c7b\u7ee7\u627f\u5173\u7cfb\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>java.util.concurrent<\/code>\n<ul class=\"wp-block-list\">\n<li><code>Locks<\/code>\n<ul class=\"wp-block-list\">\n<li><code>Lock<\/code><\/li>\n\n\n\n<li><code>ReadWriteLock<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>Executors<\/code>\n<ul class=\"wp-block-list\">\n<li><code>Executor<\/code><\/li>\n\n\n\n<li><code>ExecutorService<\/code>\n<ul class=\"wp-block-list\">\n<li><code>AbstractExecutorService<\/code>\n<ul class=\"wp-block-list\">\n<li><code>ThreadPoolExecutor<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>ScheduledExecutorService<\/code>\n<ul class=\"wp-block-list\">\n<li><code>ScheduledThreadPoolExecutor<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>Concurrent<\/code>\n<ul class=\"wp-block-list\">\n<li><code>ConcurrentMap<\/code>\n<ul class=\"wp-block-list\">\n<li><code>ConcurrentHashMap<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>CopyOnWriteArrayList<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>Atomic<\/code>\n<ul class=\"wp-block-list\">\n<li><code>AtomicInteger<\/code><\/li>\n\n\n\n<li><code>AtomicLong<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>Synchronizers<\/code>\n<ul class=\"wp-block-list\">\n<li><code>CountDownLatch<\/code><\/li>\n\n\n\n<li><code>Semaphore<\/code><\/li>\n\n\n\n<li><code>CyclicBarrier<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">\u5b9e\u73b0\u539f\u7406<\/h5>\n\n\n\n<h6 class=\"wp-block-heading\">1. \u5e76\u53d1\u5de5\u5177\u7c7b<\/h6>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>CountDownLatch<\/strong>\uff1a\u57fa\u4e8eAQS\uff08AbstractQueuedSynchronizer\uff09\u5b9e\u73b0\uff0c\u4f7f\u7528\u4e00\u4e2a\u8ba1\u6570\u5668\u6765\u63a7\u5236\u7ebf\u7a0b\u7b49\u5f85\uff0c\u5f53\u8ba1\u6570\u5668\u51cf\u4e3a0\u65f6\uff0c\u7b49\u5f85\u7684\u7ebf\u7a0b\u88ab\u91ca\u653e\u3002<\/li>\n\n\n\n<li><strong>Semaphore<\/strong>\uff1a\u4e5f\u662f\u57fa\u4e8eAQS\u5b9e\u73b0\uff0c\u901a\u8fc7\u5bf9\u4fe1\u53f7\u91cf\u7684\u83b7\u53d6\u548c\u91ca\u653e\u6765\u63a7\u5236\u5e76\u53d1\u7ebf\u7a0b\u7684\u6570\u91cf\u3002<\/li>\n\n\n\n<li><strong>CyclicBarrier<\/strong>\uff1a\u540c\u6837\u662f\u57fa\u4e8eAQS\u5b9e\u73b0\uff0c\u5b83\u4f7f\u4e00\u7ec4\u7ebf\u7a0b\u5728\u8fbe\u5230\u4e00\u4e2a\u5c4f\u969c\u70b9\u524d\u7b49\u5f85\uff0c\u5f53\u6240\u6709\u7ebf\u7a0b\u90fd\u5230\u8fbe\u65f6\uff0c\u5c4f\u969c\u624d\u4f1a\u6253\u5f00\uff0c\u7ebf\u7a0b\u53ef\u4ee5\u7ee7\u7eed\u6267\u884c\u3002<\/li>\n<\/ul>\n\n\n\n<h6 class=\"wp-block-heading\">2. \u7ebf\u7a0b\u6c60<\/h6>\n\n\n\n<p>\u7ebf\u7a0b\u6c60\u7684\u5b9e\u73b0\u4e3b\u8981\u57fa\u4e8e<code>ThreadPoolExecutor<\/code>\uff0c\u5b83\u901a\u8fc7\u6838\u5fc3\u7ebf\u7a0b\u6c60\u3001\u5de5\u4f5c\u961f\u5217\u548c\u6700\u5927\u7ebf\u7a0b\u6c60\u4e09\u4e2a\u53c2\u6570\u6765\u63a7\u5236\u7ebf\u7a0b\u7684\u521b\u5efa\u548c\u6267\u884c\u3002\u5f53\u4efb\u52a1\u5230\u6765\u65f6\uff0c\u7ebf\u7a0b\u6c60\u9996\u5148\u5c1d\u8bd5\u5c06\u4efb\u52a1\u4ea4\u7ed9\u6838\u5fc3\u7ebf\u7a0b\u6c60\u6267\u884c\uff0c\u5f53\u6838\u5fc3\u7ebf\u7a0b\u6c60\u6ee1\u65f6\uff0c\u4efb\u52a1\u4f1a\u8fdb\u5165\u5de5\u4f5c\u961f\u5217\uff0c\u5f53\u5de5\u4f5c\u961f\u5217\u4e5f\u6ee1\u65f6\uff0c\u7ebf\u7a0b\u6c60\u4f1a\u6839\u636e\u6700\u5927\u7ebf\u7a0b\u6570\u521b\u5efa\u65b0\u7684\u7ebf\u7a0b\u6267\u884c\u4efb\u52a1\u3002\u7ebf\u7a0b\u6c60\u4e2d\u7684\u7ebf\u7a0b\u53ef\u590d\u7528\uff0c\u907f\u514d\u4e86\u9891\u7e41\u521b\u5efa\u548c\u9500\u6bc1\u7ebf\u7a0b\u7684\u5f00\u9500\u3002<\/p>\n\n\n\n<h6 class=\"wp-block-heading\">3. \u539f\u5b50\u53d8\u91cf\u7c7b<\/h6>\n\n\n\n<p>\u539f\u5b50\u53d8\u91cf\u7c7b\u901a\u8fc7CAS\uff08Compare and Swap\uff09\u64cd\u4f5c\u5b9e\u73b0\u539f\u5b50\u6027\u7684\u8bfb\u53d6\u548c\u4fee\u6539\u64cd\u4f5c\uff0c\u907f\u514d\u4e86\u4f7f\u7528\u9501\u5e26\u6765\u7684\u6027\u80fd\u5f00\u9500\u3002CAS\u64cd\u4f5c\u662f\u4e00\u79cd\u4e50\u89c2\u9501\u7b56\u7565\uff0c\u5f53\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u4fee\u6539\u540c\u4e00\u4e2a\u53d8\u91cf\u65f6\uff0c\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u80fd\u6210\u529f\u66f4\u65b0\u53d8\u91cf\u7684\u503c\uff0c\u5176\u4ed6\u7ebf\u7a0b\u9700\u8981\u91cd\u8bd5\u6216\u653e\u5f03\u4fee\u6539\u64cd\u4f5c\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">\u793a\u4f8b\u8bf4\u660e<\/h5>\n\n\n\n<p>1. \u4f7f\u7528CountDownLatch\u5b9e\u73b0\u7ebf\u7a0b\u7b49\u5f85<\/p>\n\n\n\n<pre class=\"wp-block-code has-white-color has-black-background-color has-text-color has-background has-link-color wp-elements-d7fc9b9f0d1c84b73a2db76f74f9bd83\"><code>import java.util.concurrent.CountDownLatch;\n\npublic class CountDownLatchExample {\n    public static void main(String&#91;] args) throws InterruptedException {\n        final CountDownLatch latch = new CountDownLatch(3);\n\n        Runnable task = () -&gt; {\n            System.out.println(\"Task is running...\");\n            latch.countDown(); \/\/ \u51cf\u5c11\u8ba1\u6570\u5668\n        };\n\n        for (int i = 0; i &lt; 3; i++) {\n            new Thread(task).start();\n        }\n\n        latch.await(); \/\/ \u7b49\u5f85\u8ba1\u6570\u5668\u5f52\u96f6\n        System.out.println(\"All tasks are completed.\");\n    }\n}<\/code><\/pre>\n\n\n\n<p>2. \u4f7f\u7528\u7ebf\u7a0b\u6c60\u6267\u884c\u4efb\u52a1<\/p>\n\n\n\n<pre class=\"wp-block-code has-white-color has-black-background-color has-text-color has-background has-link-color wp-elements-e417df8db483e97be54550c52addef38\"><code>import java.util.concurrent.ExecutorService;\nimport java.util.concurrent.Executors;\n\npublic class ThreadPoolExample {\n    public static void main(String&#91;] args) {\n        ExecutorService executor = Executors.newFixedThreadPool(3); \/\/ \u521b\u5efa\u56fa\u5b9a\u5927\u5c0f\u7684\u7ebf\u7a0b\u6c60\n\n        Runnable task = () -&gt; System.out.println(\"Task is running...\");\n\n        for (int i = 0; i &lt; 5; i++) {\n            executor.submit(task); \/\/ \u63d0\u4ea4\u4efb\u52a1\u7ed9\u7ebf\u7a0b\u6c60\u6267\u884c\n        }\n\n        executor.shutdown(); \/\/ \u5173\u95ed\u7ebf\u7a0b\u6c60\n    }\n}<\/code><\/pre>\n\n\n\n<h5 class=\"wp-block-heading\">\u6ce8\u610f\u4e8b\u9879<\/h5>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5728\u4f7f\u7528JUC\u5de5\u5177\u7c7b\u65f6\uff0c\u9700\u8981\u4ed4\u7ec6\u4e86\u89e3\u5176\u5185\u90e8\u5b9e\u73b0\u539f\u7406\uff0c\u4ee5\u907f\u514d\u6f5c\u5728\u7684\u6027\u80fd\u95ee\u9898\u6216\u6b7b\u9501\u7b49\u5e76\u53d1\u5b89\u5168\u6027\u95ee\u9898\u3002<\/li>\n\n\n\n<li>\u7ebf\u7a0b\u6c60\u7684\u5927\u5c0f\u9700\u8981\u6839\u636e\u7cfb\u7edf\u8d44\u6e90\u548c\u4efb\u52a1\u7279\u6027\u6765\u5408\u7406\u8bbe\u7f6e\uff0c\u907f\u514d\u7ebf\u7a0b\u6570\u91cf\u8fc7\u591a\u6216\u8fc7\u5c11\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u6216\u8d44\u6e90\u6d6a\u8d39\u3002<\/li>\n\n\n\n<li>\u5728\u4f7f\u7528\u539f\u5b50\u53d8\u91cf\u7c7b\u65f6\uff0c\u8981\u6ce8\u610fCAS\u64cd\u4f5c\u7684ABA\u95ee\u9898\uff0c\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u6b63\u786e\u6027\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Java\u5e76\u53d1\u7f16\u7a0b\u5728\u591a\u6838\u5fc3\u5904\u7406\u5668\u65f6\u4ee3\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002Java Concurrency Utilities (JU [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59],"tags":[16],"class_list":["post-3043","post","type-post","status-publish","format-standard","hentry","category-59","tag-java"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java JUC\u5e76\u53d1\u7f16\u7a0b\u5305\u4ecb\u7ecd<\/title>\n<meta name=\"description\" content=\"Java Concurrency Utilities (JUC) \u5e76\u53d1\u7f16\u7a0b\u5305\u4e3a\u5f00\u53d1\u4eba\u5458\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u5de5\u5177\u548c\u6846\u67b6\u6765\u7b80\u5316\u5e76\u53d1\u7f16\u7a0b\u7684\u590d\u6742\u6027\u3002\u672c\u6587\u5c06\u4ecb\u7ecdJava JUC\u7684\u6838\u5fc3\u529f\u80fd\u3001\u4e3b\u8981\u7c7b\u7ee7\u627f\u5173\u7cfb\u3001\u5b9e\u73b0\u539f\u7406\uff0c\u5e76\u901a\u8fc7\u5177\u4f53\u793a\u4f8b\u8bf4\u660e\u5176\u7528\u6cd5\u548c\u6ce8\u610f\u4e8b\u9879\u3002\" \/>\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.talktop.cn\/?p=3043\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.talktop.cn\/?p=3043#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.talktop.cn\/?p=3043\"},\"author\":{\"name\":\"AI\u98ce\u5411\u6807\",\"@id\":\"https:\/\/www.talktop.cn\/#\/schema\/person\/25908db5f654913a22bc38d48fad71ab\"},\"headline\":\"Java JUC\u5e76\u53d1\u7f16\u7a0b\u5305\u4ecb\u7ecd\",\"datePublished\":\"2024-03-28T05:50:38+00:00\",\"dateModified\":\"2024-12-16T03:20:04+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.talktop.cn\/?p=3043\"},\"wordCount\":29,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.talktop.cn\/#\/schema\/person\/25908db5f654913a22bc38d48fad71ab\"},\"keywords\":[\"\u7f16\u7a0b\"],\"articleSection\":[\"\u7f16\u7a0b\u6280\u672f\"],\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.talktop.cn\/?p=3043#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.talktop.cn\/?p=3043\",\"url\":\"https:\/\/www.talktop.cn\/?p=3043\",\"name\":\"Java JUC\u5e76\u53d1\u7f16\u7a0b\u5305\u4ecb\u7ecd\",\"isPartOf\":{\"@id\":\"https:\/\/www.talktop.cn\/#website\"},\"datePublished\":\"2024-03-28T05:50:38+00:00\",\"dateModified\":\"2024-12-16T03:20:04+00:00\",\"description\":\"Java Concurrency Utilities (JUC) 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