{"rsdb":{"rid":"395119","subhead":"","postdate":"0","aid":"272503","fid":"54","uid":"1","topic":"1","content":"<p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u8fdb\u7a0b\uff1a\u8fd0\u884c\u8d77\u6765\u7684\u7a0b\u5e8f\u3002\u8fdb\u7a0b\u9700\u8981\u5360\u7528\u7cfb\u7edf\u8d44\u6e90\uff08\u5185\u5b58\uff0cCPU\uff09\u3002\u8fdb\u7a0b\u662f\u6700\u5c0f\u7684\u7cfb\u7edf\u8d44\u6e90\u5206\u914d\u5355\u4f4d\uff0c\u53ea\u662f\u7ed9\u7ebf\u7a0b\u63d0\u4f9b\u6267\u884c\u73af\u5883\u3002&nbsp;\u7531\u4e8e\u4e00\u4e2a\u8fdb\u7a0b\u4ea7\u751f\u4e00\u4e2a\u8fdb\u7a0b\u5730\u5740\u7a7a\u95f4\uff0c\u4e14\u8fdb\u7a0b\u5730\u5740\u7a7a\u95f4\u76f8\u4e92\u72ec\u7acb\uff0c\u4e00\u4e2a\u8fdb\u7a0b\u6b7b\u4ea1\uff0c\u5176\u4ed6\u8fdb\u7a0b\u4e0d\u4f1a\u53d7\u5230\u5f71\u54cd\u3002<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u7ebf\u7a0b\uff1aLWP\uff08light weight process\uff09\u8f7b\u91cf\u7ea7\u8fdb\u7a0b\u3002\u7ebf\u7a0b\u662f\u6700\u5c0f\u7684\u6267\u884c\u5355\u4f4d\u3002CPU\u5206\u914d\u65f6\u95f4\u8f6e\u7247\u7684\u5bf9\u8c61\u3002<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u534f\u7a0b\uff1acoroutine\uff0c\u4e5f\u53eb\u8f7b\u91cf\u7ea7\u7ebf\u7a0b\u3002 \u4e0e\u4f20\u7edf\u7684\u7cfb\u7edf\u7ea7\u7ebf\u7a0b\u548c\u8fdb\u7a0b\u76f8\u6bd4\uff0c\u643a\u7a0b\u6700\u5927\u7684\u4f18\u52bf\u5728\u4e8e\u201c\u8f7b\u91cf\u7ea7\u201d\uff0c\u53ef\u4ee5\u8f7b\u677e\u521b\u5efa\u4e0a\u4e07\u4e2a\u800c\u4e0d\u4f1a\u5bfc\u81f4\u7cfb\u7edf\u8d44\u6e90\u8870\u6b47\u3002<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u5e76\u53d1\uff1a\u6307\u7edf\u4e00\u65f6\u95f4\u5185\uff0c\u5b8f\u89c2\u4e0a\u5904\u7406\u591a\u4e2a\u4efb\u52a1<\/span><br \/><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u5e76\u884c\uff1a\u6307\u7edf\u4e00\u65f6\u95f4\u5185\uff0c\u771f\u6b63\u4e0a\u5904\u7406\u591a\u4e2a\u4efb\u52a1<\/span><\/p><br\/><p><span style=\"font-family: \u96b6\u4e66;\">\u3000\u30003.1 \u7ee7\u627fThread\u7c7b\uff0c\u91cd\u5199run\u65b9\u6cd5\uff1b<\/span><\/p><br\/><p><span style=\"font-family: \u96b6\u4e66;\">\u3000\u30003.2 \u5b9e\u73b0Runnable\u63a5\u53e3\uff0c\u91cd\u5199run\u65b9\u6cd5\uff0c\u5b9e\u73b0Runnable\u63a5\u53e3\u7684\u5b9e\u73b0\u7c7b\u7684\u5b9e\u4f8b\u5bf9\u8c61\u4f5c\u4e3aThread\u6784\u9020\u51fd\u6570\u7684target<\/span><\/p><br\/><p><span style=\"font-family: \u96b6\u4e66;\">\u3000\u30003.3&nbsp;\u901a\u8fc7Callable\u548cFutureTask\u521b\u5efa\u7ebf\u7a0b<\/span><\/p><br\/><p><span style=\"font-family: \u96b6\u4e66;\">\u3000\u30003.4&nbsp;\u901a\u8fc7\u7ebf\u7a0b\u6c60\u521b\u5efa\u7ebf\u7a0b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000\u5728Java\u4e2d\uff0c\u521b\u5efa\u7ebf\u7a0b\u4e00\u822c\u6709\u4e24\u79cd\u65b9\u5f0f\uff0c\u4e00\u79cd\u662f\u7ee7\u627fThread\u7c7b\uff0c\u4e00\u79cd\u662f\u5b9e\u73b0Runnable\u63a5\u53e3\u3002\u7136\u800c\uff0c\u8fd9\u4e24\u79cd\u65b9\u5f0f\u7684\u7f3a\u70b9\u662f\u5728\u7ebf\u7a0b\u4efb\u52a1\u6267\u884c\u7ed3\u675f\u540e\uff0c\u65e0\u6cd5\u83b7\u53d6\u6267\u884c\u7ed3\u679c\u3002\u6211\u4eec\u4e00\u822c\u53ea\u80fd\u91c7\u7528\u5171\u4eab\u53d8\u91cf\u6216\u5171\u4eab\u5b58\u50a8\u533a\u4ee5\u53ca\u7ebf\u7a0b\u901a\u4fe1\u7684\u65b9\u5f0f\u5b9e\u73b0\u83b7\u5f97\u4efb\u52a1\u7ed3\u679c\u7684\u76ee\u7684\u3002&nbsp;\u4e0d\u8fc7\uff0cJava\u4e2d\uff0c\u4e5f\u63d0\u4f9b\u4e86\u4f7f\u7528Callable\u548cFuture\u6765\u5b9e\u73b0\u83b7\u53d6\u4efb\u52a1\u7ed3\u679c\u7684\u64cd\u4f5c\u3002Callable\u7528\u6765\u6267\u884c\u4efb\u52a1\uff0c\u4ea7\u751f\u7ed3\u679c\uff0c\u800cFuture\u7528\u6765\u83b7\u5f97\u7ed3\u679c\u3002\u3000<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000\u4e0d\u8fc7\uff0c\u5728<a href=https:\/\/www.cppentry.com style=text-decoration:underline;font-size:14px;color:#F70968; target=_blank>java<\/a>\u4e2d\uff0c\u4e5f\u63d0\u4f9b\u4e86\u4f7f\u7528Callable\u548cFuture\u6765\u5b9e\u73b0\u83b7\u53d6\u4efb\u52a1\u7ed3\u679c\u7684\u64cd\u4f5c\u3002Callable\u7528\u6765\u6267\u884c\u4efb\u52a1\uff0c\u4ea7\u751f\u7ed3\u679c\uff0c\u800cFuture\u7528\u6765\u83b7\u5f97\u7ed3\u679c\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\"><strong>\u3000\u3000\u3000\u3000Callable\u548cRunnable\u7684\u533a\u522b\uff1a<\/strong><\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000\u3000\u30001.Callable\u80fd\u63a5\u53d7\u4e00\u4e2a\u6cdb\u578b\uff0c\u7136\u540e\u5728call\u65b9\u6cd5\u4e2d\u8fd4\u56de\u4e00\u4e2a\u8fd9\u4e2a\u7c7b\u578b\u7684\u503c\uff0c\u800cRunnable\u7684run\u65b9\u6cd5\u6ca1\u6709\u8fd4\u56de\u503c\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000\u3000\u30002.Callable\u7684call\u65b9\u6cd5\u53ef\u4ee5\u629b\u51fa\u5f02\u5e38\uff0c\u800cRunnable\u7684run\u65b9\u6cd5\u4e0d\u4f1a\u629b\u51fa\u5f02\u5e38\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000Future\u6a21\u5f0f\u7684\u6838\u5fc3\u5728\u4e8e\uff1a\u53bb\u9664\u4e86\u4e3b\u51fd\u6570\u7684\u7b49\u5f85\u65f6\u95f4\uff0c\u5e76\u4f7f\u5f97\u539f\u672c\u9700\u8981\u7b49\u5f85\u7684\u65f6\u95f4\u6bb5\u53ef\u4ee5\u7528\u4e8e\u5904\u7406\u5176\u4ed6\u4e1a\u52a1\u903b\u8f91<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000Futrure\u6a21\u5f0f:\u5bf9\u4e8e\u591a\u7ebf\u7a0b\uff0c\u5982\u679c\u7ebf\u7a0bA\u8981\u7b49\u5f85\u7ebf\u7a0bB\u7684\u7ed3\u679c\uff0c\u90a3\u4e48\u7ebf\u7a0bA\u6ca1\u5fc5\u8981\u7b49\u5f85B\uff0c\u76f4\u5230B\u6709\u7ed3\u679c\uff0c\u53ef\u4ee5\u5148\u62ff\u5230\u4e00\u4e2a\u672a\u6765\u7684Future\uff0c\u7b49B\u6709\u7ed3\u679c\u662f\u518d\u53d6\u771f\u5b9e\u7684\u7ed3\u679c\u3002<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000V get()\uff1a\u83b7\u53d6\u5f02\u6b65\u6267\u884c\u7684\u7ed3\u679c\uff0c\u5982\u679c\u6ca1\u6709\u7ed3\u679c\u53ef\u7528\uff0c\u6b64\u65b9\u6cd5\u4f1a\u963b\u585e\u77e5\u9053\u5f02\u6b65\u8ba1\u7b97\u5b8c\u6210\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000V get(Long timeout,TimeUnit unit)\uff1a\u83b7\u53d6\u5f02\u6b65\u6267\u884c\u7ed3\u679c\uff0c\u5982\u679c\u6ca1\u54df\u7ed3\u679c\u53ef\u7528\uff0c\u6b64\u65b9\u6cd5\u4f1a\u963b\u585e\uff0c\u4f46\u662f\u4f1a\u6709\u65f6\u95f4\u9650\u5236\uff0c\u5982\u679c\u963b\u585e\u65f6\u95f4\u8d85\u8fc7\u8bbe\u5b9a\u7684timeout\u65f6\u95f4\uff0c\u8be5\u65b9\u6cd5\u5c06\u629b\u51fa\u5f02\u5e38\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000boolean isDone()\uff1a\u5982\u679c\u4efb\u52a1\u6267\u884c\u7ed3\u675f\uff0c\u65e0\u8bba\u662f\u6b63\u5e38\u7ed3\u675f\u6216\u662f\u4e2d\u9014\u53d6\u6d88\u8fd8\u662f\u53d1\u751f\u5f02\u5e38\uff0c\u90fd\u8fd4\u56detrue\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000boolean isCanceller()\uff1a\u5982\u679c\u4efb\u52a1\u5b8c\u6210\u524d\u88ab\u53d6\u6d88\uff0c\u5219\u8fd4\u56detrue\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000boolean cancel(boolean mayInterrupRunning)\uff1a\u5982\u679c\u4efb\u52a1\u8fd8\u6ca1\u6709\u5f00\u59cb\uff0c\u6267\u884ccancel\u65b9\u6cd5\u5c06\u8fd4\u56defalse\uff1b\u5982\u679c\u4efb\u52a1\u5df2\u7ecf\u542f\u52a8\uff0c\u6267\u884ccancel\u65b9\u6cd5\u5c06\u4ee5\u4e2d\u65ad\u6267\u884c\u6b64\u4efb\u52a1\u7ebf\u7a0b\u7684\u65b9\u5f0f\u6765\u8bd5\u56fe\u505c\u6b62\u4efb\u52a1\uff0c\u5982\u679c\u505c\u6b62\u6210\u529f\uff0c\u8fd4\u56detrue\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000\u5f53\u4efb\u52a1\u5df2\u7ecf\u542f\u52a8\uff0c\u6267\u884ccancel(false)\u65b9\u6cd5\u5c06\u4e0d\u4f1a\u5bf9\u6b63\u5728\u6267\u884c\u7684\u4efb\u52a1\u7ebf\u7a0b\u4ea7\u751f\u5f71\u54cd\uff08\u8ba9\u7ebf\u7a0b\u6b63\u5e38\u6267\u884c\u5230\u5b8c\u6210\uff09\uff0c\u6b64\u65f6\u8fd4\u56defalse\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000\u5f53\u4efb\u52a1\u5df2\u7ecf\u542f\u52a8\uff0c\u6267\u884ccancel\u65b9\u6cd5\u5c06\u8fd4\u56defalse\uff0cMayInterruptRunning\u53c2\u6570\u8868\u793a\u662f\u5426\u4e2d\u65ad\u6267\u884c\u4e2d\u7684\u7ebf\u7a0b\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000\u5b9e\u9645\u4e0aFuture\u63d0\u4f9b\u4e86\u4e09\u79cd\u529f\u80fd\uff1a<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000\u3000\u30001.\u80fd\u591f\u4e2d\u65ad\u6267\u884c\u4e2d\u7684\u4efb\u52a1\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000\u3000\u30002.\u5224\u65ad\u4efb\u52a1\u662f\u5426\u6267\u884c\u5b8c\u6210\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; font-family: \u96b6\u4e66;\">\u3000\u3000\u3000\u3000\u3000\u30003.\u83b7\u53d6\u4efb\u52a1\u6267\u884c\u5b8c\u6210\u540e\u7684\u7ed3\u679c\uff1b<\/span><\/p><br\/><p><span style=\"font-size: 16px; 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