{"id":1022,"date":"2019-01-30T18:57:55","date_gmt":"2019-01-30T10:57:55","guid":{"rendered":"http:\/\/www.rain1024.com\/?p=1022"},"modified":"2023-08-07T20:57:25","modified_gmt":"2023-08-07T12:57:25","slug":"article141","status":"publish","type":"post","link":"http:\/\/rain1024.com\/index.php\/2019\/01\/30\/article141\/","title":{"rendered":"Java\u591a\u7ebf\u7a0b-\u7ebf\u7a0b\u6c60\u7684\u539f\u7406\u53ca\u5b9e\u73b0"},"content":{"rendered":"<p>1\u3001\u7ebf\u7a0b\u6c60\u7b80\u4ecb\uff1a<br \/>\n\u591a\u7ebf\u7a0b\u6280\u672f\u4e3b\u8981\u89e3\u51b3\u5904\u7406\u5668\u5355\u5143\u5185\u591a\u4e2a\u7ebf\u7a0b\u6267\u884c\u7684\u95ee\u9898\uff0c\u5b83\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u5904\u7406\u5668\u5355\u5143\u7684\u95f2\u7f6e\u65f6\u95f4\uff0c\u589e\u52a0\u5904\u7406\u5668\u5355\u5143\u7684\u541e\u5410\u80fd\u529b\u3002<br \/>\n\u5047\u8bbe\u4e00\u4e2a\u670d\u52a1\u5668\u5b8c\u6210\u4e00\u9879\u4efb\u52a1\u6240\u9700\u65f6\u95f4\u4e3a\uff1aT1 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\/>\n\u5047\u8bbe\u4e00\u4e2a\u670d\u52a1\u5668\u4e00\u5929\u8981\u5904\u740650000\u4e2a\u8bf7\u6c42\uff0c\u5e76\u4e14\u6bcf\u4e2a\u8bf7\u6c42\u9700\u8981\u4e00\u4e2a\u5355\u72ec\u7684\u7ebf\u7a0b\u5b8c\u6210\u3002\u5728\u7ebf\u7a0b\u6c60\u4e2d\uff0c\u7ebf\u7a0b\u6570\u4e00\u822c\u662f\u56fa\u5b9a\u7684\uff0c\u6240\u4ee5\u4ea7\u751f\u7ebf\u7a0b\u603b\u6570\u4e0d\u4f1a\u8d85\u8fc7\u7ebf\u7a0b\u6c60\u4e2d\u7ebf\u7a0b\u7684\u6570\u76ee\uff0c\u800c\u5982\u679c\u670d\u52a1\u5668\u4e0d\u5229\u7528\u7ebf\u7a0b\u6c60\u6765\u5904\u7406\u8fd9\u4e9b\u8bf7\u6c42\u5219\u7ebf\u7a0b\u603b\u6570\u4e3a50000\u3002\u4e00\u822c\u7ebf\u7a0b\u6c60\u5927\u5c0f\u662f\u8fdc\u5c0f\u4e8e50000\u3002\u6240\u4ee5\u5229\u7528\u7ebf\u7a0b\u6c60\u7684\u670d\u52a1\u5668\u7a0b\u5e8f\u4e0d\u4f1a\u4e3a\u4e86\u521b\u5efa50000\u800c\u5728\u5904\u7406\u8bf7\u6c42\u65f6\u6d6a\u8d39\u65f6\u95f4\uff0c\u4ece\u800c\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n<p>\u4ee3\u7801\u5b9e\u73b0\u4e2d\u5e76\u6ca1\u6709\u5b9e\u73b0\u4efb\u52a1\u63a5\u53e3\uff0c\u800c\u662f\u628aRunnable\u5bf9\u8c61\u52a0\u5165\u5230\u7ebf\u7a0b\u6c60\u7ba1\u7406\u5668\uff08ThreadPool\uff09\uff0c\u7136\u540e\u5269\u4e0b\u7684\u4e8b\u60c5\u5c31\u7531\u7ebf\u7a0b\u6c60\u7ba1\u7406\u5668\uff08ThreadPool\uff09\u6765\u5b8c\u6210\u4e86<\/p>\n<p>&nbsp;<\/p>\n<pre class=\"lang:php decode:true \">package mine.util.thread;\n \nimport java.util.LinkedList;\nimport java.util.List;\n \n\/**\n * \u7ebf\u7a0b\u6c60\u7c7b\uff0c\u7ebf\u7a0b\u7ba1\u7406\u5668\uff1a\u521b\u5efa\u7ebf\u7a0b\uff0c\u6267\u884c\u4efb\u52a1\uff0c\u9500\u6bc1\u7ebf\u7a0b\uff0c\u83b7\u53d6\u7ebf\u7a0b\u57fa\u672c\u4fe1\u606f\n *\/\npublic final class ThreadPool {\n    \/\/ \u7ebf\u7a0b\u6c60\u4e2d\u9ed8\u8ba4\u7ebf\u7a0b\u7684\u4e2a\u6570\u4e3a5\n    private static int worker_num = 5;\n    \/\/ \u5de5\u4f5c\u7ebf\u7a0b\n    private WorkThread[] workThrads;\n    \/\/ \u672a\u5904\u7406\u7684\u4efb\u52a1\n    private static volatile int finished_task = 0;\n    \/\/ \u4efb\u52a1\u961f\u5217\uff0c\u4f5c\u4e3a\u4e00\u4e2a\u7f13\u51b2,List\u7ebf\u7a0b\u4e0d\u5b89\u5168\n    private List&lt;Runnable&gt; taskQueue = new LinkedList&lt;Runnable&gt;();\n    private static ThreadPool threadPool;\n \n    \/\/ \u521b\u5efa\u5177\u6709\u9ed8\u8ba4\u7ebf\u7a0b\u4e2a\u6570\u7684\u7ebf\u7a0b\u6c60\n    private ThreadPool() {\n        this(5);\n    }\n \n    \/\/ \u521b\u5efa\u7ebf\u7a0b\u6c60,worker_num\u4e3a\u7ebf\u7a0b\u6c60\u4e2d\u5de5\u4f5c\u7ebf\u7a0b\u7684\u4e2a\u6570\n    private ThreadPool(int worker_num) {\n        ThreadPool.worker_num = worker_num;\n        workThrads = new WorkThread[worker_num];\n        for (int i = 0; i &lt; worker_num; i++) {\n            workThrads[i] = new WorkThread();\n            workThrads[i].start();\/\/ \u5f00\u542f\u7ebf\u7a0b\u6c60\u4e2d\u7684\u7ebf\u7a0b\n        }\n    }\n \n    \/\/ \u5355\u6001\u6a21\u5f0f\uff0c\u83b7\u5f97\u4e00\u4e2a\u9ed8\u8ba4\u7ebf\u7a0b\u4e2a\u6570\u7684\u7ebf\u7a0b\u6c60\n    public static ThreadPool getThreadPool() {\n        return getThreadPool(ThreadPool.worker_num);\n    }\n \n    \/\/ \u5355\u6001\u6a21\u5f0f\uff0c\u83b7\u5f97\u4e00\u4e2a\u6307\u5b9a\u7ebf\u7a0b\u4e2a\u6570\u7684\u7ebf\u7a0b\u6c60,worker_num(&gt;0)\u4e3a\u7ebf\u7a0b\u6c60\u4e2d\u5de5\u4f5c\u7ebf\u7a0b\u7684\u4e2a\u6570\n    \/\/ worker_num&lt;=0\u521b\u5efa\u9ed8\u8ba4\u7684\u5de5\u4f5c\u7ebf\u7a0b\u4e2a\u6570\n    public static ThreadPool getThreadPool(int worker_num1) {\n        if (worker_num1 &lt;= 0)\n            worker_num1 = ThreadPool.worker_num;\n        if (threadPool == null)\n            threadPool = new ThreadPool(worker_num1);\n        return threadPool;\n    }\n \n    \/\/ \u6267\u884c\u4efb\u52a1,\u5176\u5b9e\u53ea\u662f\u628a\u4efb\u52a1\u52a0\u5165\u4efb\u52a1\u961f\u5217\uff0c\u4ec0\u4e48\u65f6\u5019\u6267\u884c\u6709\u7ebf\u7a0b\u6c60\u7ba1\u7406\u5668\u89c9\u5b9a\n    public void execute(Runnable task) {\n        synchronized (taskQueue) {\n            taskQueue.add(task);\n            taskQueue.notify();\n        }\n    }\n \n    \/\/ \u6279\u91cf\u6267\u884c\u4efb\u52a1,\u5176\u5b9e\u53ea\u662f\u628a\u4efb\u52a1\u52a0\u5165\u4efb\u52a1\u961f\u5217\uff0c\u4ec0\u4e48\u65f6\u5019\u6267\u884c\u6709\u7ebf\u7a0b\u6c60\u7ba1\u7406\u5668\u89c9\u5b9a\n    public void execute(Runnable[] task) {\n        synchronized (taskQueue) {\n            for (Runnable t : task)\n                taskQueue.add(t);\n            taskQueue.notify();\n        }\n    }\n \n    \/\/ \u6279\u91cf\u6267\u884c\u4efb\u52a1,\u5176\u5b9e\u53ea\u662f\u628a\u4efb\u52a1\u52a0\u5165\u4efb\u52a1\u961f\u5217\uff0c\u4ec0\u4e48\u65f6\u5019\u6267\u884c\u6709\u7ebf\u7a0b\u6c60\u7ba1\u7406\u5668\u89c9\u5b9a\n    public void execute(List&lt;Runnable&gt; task) {\n        synchronized (taskQueue) {\n            for (Runnable t : task)\n                taskQueue.add(t);\n            taskQueue.notify();\n        }\n    }\n \n    \/\/ \u9500\u6bc1\u7ebf\u7a0b\u6c60,\u8be5\u65b9\u6cd5\u4fdd\u8bc1\u5728\u6240\u6709\u4efb\u52a1\u90fd\u5b8c\u6210\u7684\u60c5\u51b5\u4e0b\u624d\u9500\u6bc1\u6240\u6709\u7ebf\u7a0b\uff0c\u5426\u5219\u7b49\u5f85\u4efb\u52a1\u5b8c\u6210\u624d\u9500\u6bc1\n    public void destroy() {\n        while (!taskQueue.isEmpty()) {\/\/ \u5982\u679c\u8fd8\u6709\u4efb\u52a1\u6ca1\u6267\u884c\u5b8c\u6210\uff0c\u5c31\u5148\u7761\u4f1a\u5427\n            try {\n                Thread.sleep(10);\n            } catch (InterruptedException e) {\n                e.printStackTrace();\n            }\n        }\n        \/\/ \u5de5\u4f5c\u7ebf\u7a0b\u505c\u6b62\u5de5\u4f5c\uff0c\u4e14\u7f6e\u4e3anull\n        for (int i = 0; i &lt; worker_num; i++) {\n            workThrads[i].stopWorker();\n            workThrads[i] = null;\n        }\n        threadPool=null;\n        taskQueue.clear();\/\/ \u6e05\u7a7a\u4efb\u52a1\u961f\u5217\n    }\n \n    \/\/ \u8fd4\u56de\u5de5\u4f5c\u7ebf\u7a0b\u7684\u4e2a\u6570\n    public int getWorkThreadNumber() {\n        return worker_num;\n    }\n \n    \/\/ \u8fd4\u56de\u5df2\u5b8c\u6210\u4efb\u52a1\u7684\u4e2a\u6570,\u8fd9\u91cc\u7684\u5df2\u5b8c\u6210\u662f\u53ea\u51fa\u4e86\u4efb\u52a1\u961f\u5217\u7684\u4efb\u52a1\u4e2a\u6570\uff0c\u53ef\u80fd\u8be5\u4efb\u52a1\u5e76\u6ca1\u6709\u5b9e\u9645\u6267\u884c\u5b8c\u6210\n    public int getFinishedTasknumber() {\n        return finished_task;\n    }\n \n    \/\/ \u8fd4\u56de\u4efb\u52a1\u961f\u5217\u7684\u957f\u5ea6\uff0c\u5373\u8fd8\u6ca1\u5904\u7406\u7684\u4efb\u52a1\u4e2a\u6570\n    public int getWaitTasknumber() {\n        return taskQueue.size();\n    }\n \n    \/\/ \u8986\u76d6toString\u65b9\u6cd5\uff0c\u8fd4\u56de\u7ebf\u7a0b\u6c60\u4fe1\u606f\uff1a\u5de5\u4f5c\u7ebf\u7a0b\u4e2a\u6570\u548c\u5df2\u5b8c\u6210\u4efb\u52a1\u4e2a\u6570\n    @Override\n    public String toString() {\n        return \"WorkThread number:\" + worker_num + \"  finished task number:\"\n                + finished_task + \"  wait task number:\" + getWaitTasknumber();\n    }\n \n    \/**\n     * \u5185\u90e8\u7c7b\uff0c\u5de5\u4f5c\u7ebf\u7a0b\n     *\/\n    private class WorkThread extends Thread {\n        \/\/ \u8be5\u5de5\u4f5c\u7ebf\u7a0b\u662f\u5426\u6709\u6548\uff0c\u7528\u4e8e\u7ed3\u675f\u8be5\u5de5\u4f5c\u7ebf\u7a0b\n        private boolean isRunning = true;\n \n        \/*\n         * \u5173\u952e\u6240\u5728\u554a\uff0c\u5982\u679c\u4efb\u52a1\u961f\u5217\u4e0d\u7a7a\uff0c\u5219\u53d6\u51fa\u4efb\u52a1\u6267\u884c\uff0c\u82e5\u4efb\u52a1\u961f\u5217\u7a7a\uff0c\u5219\u7b49\u5f85\n         *\/\n        @Override\n        public void run() {\n            Runnable r = null;\n            while (isRunning) {\/\/ \u6ce8\u610f\uff0c\u82e5\u7ebf\u7a0b\u65e0\u6548\u5219\u81ea\u7136\u7ed3\u675frun\u65b9\u6cd5\uff0c\u8be5\u7ebf\u7a0b\u5c31\u6ca1\u7528\u4e86\n                synchronized (taskQueue) {\n                    while (isRunning &amp;&amp; taskQueue.isEmpty()) {\/\/ \u961f\u5217\u4e3a\u7a7a\n                        try {\n                            taskQueue.wait(20);\n                        } catch (InterruptedException e) {\n                            e.printStackTrace();\n                        }\n                    }\n                    if (!taskQueue.isEmpty())\n                        r = taskQueue.remove(0);\/\/ \u53d6\u51fa\u4efb\u52a1\n                }\n                if (r != null) {\n                    r.run();\/\/ \u6267\u884c\u4efb\u52a1\n                }\n                finished_task++;\n                r = null;\n            }\n        }\n \n        \/\/ \u505c\u6b62\u5de5\u4f5c\uff0c\u8ba9\u8be5\u7ebf\u7a0b\u81ea\u7136\u6267\u884c\u5b8crun\u65b9\u6cd5\uff0c\u81ea\u7136\u7ed3\u675f\n        public void stopWorker() {\n            isRunning = false;\n        }\n    }\n}\n<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u6d4b\u8bd5\u4ee3\u7801\uff1a<\/p>\n<pre class=\"lang:php decode:true \">package mine.util.thread;\n \n\/\/\u6d4b\u8bd5\u7ebf\u7a0b\u6c60\npublic class TestThreadPool {\n    public static void main(String[] args) {\n        \/\/ \u521b\u5efa3\u4e2a\u7ebf\u7a0b\u7684\u7ebf\u7a0b\u6c60\n        ThreadPool t = ThreadPool.getThreadPool(3);\n        t.execute(new Runnable[] { new Task(), new Task(), new Task() });\n        t.execute(new Runnable[] { new Task(), new Task(), new Task() });\n        System.out.println(t);\n        t.destroy();\/\/ \u6240\u6709\u7ebf\u7a0b\u90fd\u6267\u884c\u5b8c\u6210\u624ddestory\n        System.out.println(t);\n    }\n \n    \/\/ \u4efb\u52a1\u7c7b\n    static class Task implements Runnable {\n        private static volatile int i = 1;\n \n        @Override\n        public void run() {\/\/ \u6267\u884c\u4efb\u52a1\n            System.out.println(\"\u4efb\u52a1 \" + (i++) + \" \u5b8c\u6210\");\n        }\n    }\n}\n<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n<p>WorkThread number:3\u00a0 finished task number:0\u00a0 wait task number:6<br \/>\n\u4efb\u52a1 1 \u5b8c\u6210<br \/>\n\u4efb\u52a1 2 \u5b8c\u6210<br \/>\n\u4efb\u52a1 3 \u5b8c\u6210<br \/>\n\u4efb\u52a1 4 \u5b8c\u6210<br \/>\n\u4efb\u52a1 5 \u5b8c\u6210<br \/>\n\u4efb\u52a1 6 \u5b8c\u6210<br \/>\nWorkThread number:3\u00a0 finished task number:6\u00a0 wait task number:0<\/p>\n<p>\u5206\u6790\uff1a\u7531\u4e8e\u5e76\u6ca1\u6709\u4efb\u52a1\u63a5\u53e3\uff0c\u4f20\u5165\u7684\u53ef\u4ee5\u662f\u81ea\u5b9a\u4e49\u7684\u4efb\u4f55\u4efb\u52a1\uff0c\u6240\u4ee5\u7ebf\u7a0b\u6c60\u5e76\u4e0d\u80fd\u51c6\u786e\u7684\u5224\u65ad\u8be5\u4efb\u52a1\u662f\u5426\u771f\u6b63\u7684\u5df2\u7ecf\u5b8c\u6210\uff08\u771f\u6b63\u5b8c\u6210\u8be5\u4efb\u52a1\u662f\u8fd9\u4e2a\u4efb\u52a1\u7684run\u65b9\u6cd5\u6267\u884c\u5b8c\u6bd5\uff09\uff0c\u53ea\u80fd\u77e5\u9053\u8be5\u4efb\u52a1\u5df2\u7ecf\u51fa\u4e86\u4efb\u52a1\u961f\u5217\uff0c\u6b63\u5728\u6267\u884c\u6216\u8005\u5df2\u7ecf\u5b8c\u6210\u3002<\/p>\n<p>2\u3001java\u7c7b\u5e93\u4e2d\u63d0\u4f9b\u7684\u7ebf\u7a0b\u6c60\u7b80\u4ecb\uff1a<\/p>\n<p>java\u63d0\u4f9b\u7684\u7ebf\u7a0b\u6c60\u66f4\u52a0\u5f3a\u5927\uff0c\u76f8\u4fe1\u7406\u89e3\u7ebf\u7a0b\u6c60\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u770b\u7c7b\u5e93\u4e2d\u7684\u7ebf\u7a0b\u6c60\u5c31\u4e0d\u4f1a\u611f\u5230\u964c\u751f\u4e86\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/cos.rain1024.com\/markdown\/java-2.gif\" alt=\"\" \/><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/cos.rain1024.com\/markdown\/java.gif\" alt=\"\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u7ebf\u7a0b\u6c60\u7b80\u4ecb\uff1a \u591a\u7ebf\u7a0b\u6280\u672f\u4e3b\u8981\u89e3\u51b3\u5904\u7406\u5668\u5355\u5143\u5185\u591a\u4e2a\u7ebf\u7a0b\u6267\u884c\u7684\u95ee\u9898\uff0c\u5b83\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u5904\u7406\u5668\u5355\u5143\u7684\u95f2\u7f6e\u65f6\u95f4\uff0c\u589e\u52a0\u5904\u2026 <span class=\"read-more\"><a href=\"http:\/\/rain1024.com\/index.php\/2019\/01\/30\/article141\/\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31],"tags":[46,84],"class_list":["post-1022","post","type-post","status-publish","format-standard","hentry","category-java","tag-java","tag-thread"],"_links":{"self":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/1022","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/comments?post=1022"}],"version-history":[{"count":1,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/1022\/revisions"}],"predecessor-version":[{"id":1391,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/1022\/revisions\/1391"}],"wp:attachment":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/media?parent=1022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/categories?post=1022"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/tags?post=1022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}