{"id":5351,"date":"2022-06-26T15:40:55","date_gmt":"2022-06-26T07:40:55","guid":{"rendered":"https:\/\/www.xttblog.com\/?p=5351"},"modified":"2022-06-26T15:40:55","modified_gmt":"2022-06-26T07:40:55","slug":"%e4%b8%80%e6%96%87%e7%9c%8b%e6%87%82java%e7%a8%8b%e5%ba%8f%e5%91%98%e5%bf%85%e4%bc%9a%e7%9a%84%e5%86%85%e5%ad%98%e6%a8%a1%e5%9e%8b%ef%bc%81","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=5351","title":{"rendered":"\u4e00\u6587\u770b\u61c2Java\u7a0b\u5e8f\u5458\u5fc5\u4f1a\u7684\u5185\u5b58\u6a21\u578b\uff01"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u5e76\u53d1\u7f16\u7a0b\u6a21\u578b\u7684\u5206\u7c7b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5e76\u53d1\u7f16\u7a0b\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u5904\u7406\u4e24\u4e2a\u5173\u952e\u95ee\u9898\uff1a\u7ebf\u7a0b\u4e4b\u95f4\u5982\u4f55\u901a\u4fe1\u53ca\u7ebf\u7a0b\u4e4b\u95f4\u5982\u4f55\u540c\u6b65\uff08\u8fd9\u91cc\u7684\u7ebf\u7a0b\u662f\u6307\u5e76\u53d1\u6267\u884c\u7684\u6d3b\u52a8\u5b9e\u4f53\uff09\u3002\u901a\u4fe1\u662f\u6307\u7ebf\u7a0b\u4e4b\u95f4\u4ee5\u4f55\u79cd\u673a\u5236\u6765\u4ea4\u6362\u4fe1\u606f\u3002\u5728\u547d\u4ee4\u5f0f\u7f16\u7a0b\u4e2d\uff0c\u7ebf\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\u673a\u5236\u6709\u4e24\u79cd\uff1a\u5171\u4eab\u5185\u5b58\u548c\u6d88\u606f\u4f20\u9012\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5171\u4eab\u5185\u5b58\u7684\u5e76\u53d1\u6a21\u578b\u91cc\uff0c\u7ebf\u7a0b\u4e4b\u95f4\u5171\u4eab\u7a0b\u5e8f\u7684\u516c\u5171\u72b6\u6001\uff0c\u7ebf\u7a0b\u4e4b\u95f4\u901a\u8fc7\u5199 &#8211; \u8bfb\u5185\u5b58\u4e2d\u7684\u516c\u5171\u72b6\u6001\u6765\u9690\u5f0f\u8fdb\u884c\u901a\u4fe1\u3002\u5728\u6d88\u606f\u4f20\u9012\u7684\u5e76\u53d1\u6a21\u578b\u91cc\uff0c\u7ebf\u7a0b\u4e4b\u95f4\u6ca1\u6709\u516c\u5171\u72b6\u6001\uff0c\u7ebf\u7a0b\u4e4b\u95f4\u5fc5\u987b\u901a\u8fc7\u660e\u786e\u7684\u53d1\u9001\u6d88\u606f\u6765\u663e\u5f0f\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u6b65\u662f\u6307\u7a0b\u5e8f\u7528\u4e8e\u63a7\u5236\u4e0d\u540c\u7ebf\u7a0b\u4e4b\u95f4\u64cd\u4f5c\u53d1\u751f\u76f8\u5bf9\u987a\u5e8f\u7684\u673a\u5236\u3002\u5728\u5171\u4eab\u5185\u5b58\u5e76\u53d1\u6a21\u578b\u91cc\uff0c\u540c\u6b65\u662f\u663e\u5f0f\u8fdb\u884c\u7684\u3002\u7a0b\u5e8f\u5458\u5fc5\u987b\u663e\u5f0f\u6307\u5b9a\u67d0\u4e2a\u65b9\u6cd5\u6216\u67d0\u6bb5\u4ee3\u7801\u9700\u8981\u5728\u7ebf\u7a0b\u4e4b\u95f4\u4e92\u65a5\u6267\u884c\u3002\u5728\u6d88\u606f\u4f20\u9012\u7684\u5e76\u53d1\u6a21\u578b\u91cc\uff0c\u7531\u4e8e\u6d88\u606f\u7684\u53d1\u9001\u5fc5\u987b\u5728\u6d88\u606f\u7684\u63a5\u6536\u4e4b\u524d\uff0c\u56e0\u6b64\u540c\u6b65\u662f\u9690\u5f0f\u8fdb\u884c\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Java \u7684\u5e76\u53d1\u91c7\u7528\u7684\u662f\u5171\u4eab\u5185\u5b58\u6a21\u578b\uff0cJava \u7ebf\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\u603b\u662f\u9690\u5f0f\u8fdb\u884c\uff0c\u6574\u4e2a\u901a\u4fe1\u8fc7\u7a0b\u5bf9\u7a0b\u5e8f\u5458\u5b8c\u5168\u900f\u660e\u3002\u5982\u679c\u7f16\u5199\u591a\u7ebf\u7a0b\u7a0b\u5e8f\u7684 Java \u7a0b\u5e8f\u5458\u4e0d\u7406\u89e3\u9690\u5f0f\u8fdb\u884c\u7684\u7ebf\u7a0b\u4e4b\u95f4\u901a\u4fe1\u7684\u5de5\u4f5c\u673a\u5236\uff0c\u5f88\u53ef\u80fd\u4f1a\u9047\u5230\u5404\u79cd\u5947\u602a\u7684\u5185\u5b58\u53ef\u89c1\u6027\u95ee\u9898\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Java \u5185\u5b58\u6a21\u578b\u7684\u62bd\u8c61<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 java \u4e2d\uff0c\u6240\u6709\u5b9e\u4f8b\u57df\u3001\u9759\u6001\u57df\u548c\u6570\u7ec4\u5143\u7d20\u5b58\u50a8\u5728\u5806\u5185\u5b58\u4e2d\uff0c\u5806\u5185\u5b58\u5728\u7ebf\u7a0b\u4e4b\u95f4\u5171\u4eab\uff08\u672c\u6587\u4f7f\u7528\u201c\u5171\u4eab\u53d8\u91cf\u201d\u8fd9\u4e2a\u672f\u8bed\u4ee3\u6307\u5b9e\u4f8b\u57df\uff0c\u9759\u6001\u57df\u548c\u6570\u7ec4\u5143\u7d20\uff09\u3002\u5c40\u90e8\u53d8\u91cf\uff08Local variables\uff09\uff0c\u65b9\u6cd5\u5b9a\u4e49\u53c2\u6570\uff08java \u8bed\u8a00\u89c4\u8303\u79f0\u4e4b\u4e3a formal method parameters\uff09\u548c\u5f02\u5e38\u5904\u7406\u5668\u53c2\u6570\uff08exception handler parameters\uff09\u4e0d\u4f1a\u5728\u7ebf\u7a0b\u4e4b\u95f4\u5171\u4eab\uff0c\u5b83\u4eec\u4e0d\u4f1a\u6709\u5185\u5b58\u53ef\u89c1\u6027\u95ee\u9898\uff0c\u4e5f\u4e0d\u53d7\u5185\u5b58\u6a21\u578b\u7684\u5f71\u54cd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Java \u7ebf\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\u7531 Java \u5185\u5b58\u6a21\u578b\uff08\u672c\u6587\u7b80\u79f0\u4e3a JMM\uff09\u63a7\u5236\uff0cJMM \u51b3\u5b9a\u4e00\u4e2a\u7ebf\u7a0b\u5bf9\u5171\u4eab\u53d8\u91cf\u7684\u5199\u5165\u4f55\u65f6\u5bf9\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u53ef\u89c1\u3002\u4ece\u62bd\u8c61\u7684\u89d2\u5ea6\u6765\u770b\uff0cJMM \u5b9a\u4e49\u4e86\u7ebf\u7a0b\u548c\u4e3b\u5185\u5b58\u4e4b\u95f4\u7684\u62bd\u8c61\u5173\u7cfb\uff1a\u7ebf\u7a0b\u4e4b\u95f4\u7684\u5171\u4eab\u53d8\u91cf\u5b58\u50a8\u5728\u4e3b\u5185\u5b58\uff08main memory\uff09\u4e2d\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u4e00\u4e2a\u79c1\u6709\u7684\u672c\u5730\u5185\u5b58\uff08local memory\uff09\uff0c\u672c\u5730\u5185\u5b58\u4e2d\u5b58\u50a8\u4e86\u8be5\u7ebf\u7a0b\u4ee5\u8bfb \/ \u5199\u5171\u4eab\u53d8\u91cf\u7684\u526f\u672c\u3002\u672c\u5730\u5185\u5b58\u662f JMM \u7684\u4e00\u4e2a\u62bd\u8c61\u6982\u5ff5\uff0c\u5e76\u4e0d\u771f\u5b9e\u5b58\u5728\u3002\u5b83\u6db5\u76d6\u4e86\u7f13\u5b58\uff0c\u5199\u7f13\u51b2\u533a\uff0c\u5bc4\u5b58\u5668\u4ee5\u53ca\u5176\u4ed6\u7684\u786c\u4ef6\u548c\u7f16\u8bd1\u5668\u4f18\u5316\u3002Java \u5185\u5b58\u6a21\u578b\u7684\u62bd\u8c61\u793a\u610f\u56fe\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/xmt1139057136\/xttblog\/2022\/06\/java0.png\" alt=\"Java \u5185\u5b58\u6a21\u578b\u7684\u62bd\u8c61\u793a\u610f\u56fe\" \/><figcaption>Java \u5185\u5b58\u6a21\u578b\u7684\u62bd\u8c61\u793a\u610f\u56fe<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u4e0a\u56fe\u6765\u770b\uff0c\u7ebf\u7a0b A \u4e0e\u7ebf\u7a0b B \u4e4b\u95f4\u5982\u8981\u901a\u4fe1\u7684\u8bdd\uff0c\u5fc5\u987b\u8981\u7ecf\u5386\u4e0b\u9762 2 \u4e2a\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>\u9996\u5148\uff0c\u7ebf\u7a0b A \u628a\u672c\u5730\u5185\u5b58 A \u4e2d\u66f4\u65b0\u8fc7\u7684\u5171\u4eab\u53d8\u91cf\u5237\u65b0\u5230\u4e3b\u5185\u5b58\u4e2d\u53bb\u3002<\/li><li>\u7136\u540e\uff0c\u7ebf\u7a0b B \u5230\u4e3b\u5185\u5b58\u4e2d\u53bb\u8bfb\u53d6\u7ebf\u7a0b A \u4e4b\u524d\u5df2\u66f4\u65b0\u8fc7\u7684\u5171\u4eab\u53d8\u91cf\u3002<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u9762\u901a\u8fc7\u793a\u610f\u56fe\u6765\u8bf4\u660e\u8fd9\u4e24\u4e2a\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/xmt1139057136\/xttblog\/2022\/06\/java1.png\" alt=\"\u7ebf\u7a0b\u4e4b\u95f4\u901a\u4fe1\" \/><figcaption>\u7ebf\u7a0b\u4e4b\u95f4\u901a\u4fe1<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u4e0a\u56fe\u6240\u793a\uff0c\u672c\u5730\u5185\u5b58 A \u548c B \u6709\u4e3b\u5185\u5b58\u4e2d\u5171\u4eab\u53d8\u91cf x \u7684\u526f\u672c\u3002\u5047\u8bbe\u521d\u59cb\u65f6\uff0c\u8fd9\u4e09\u4e2a\u5185\u5b58\u4e2d\u7684 x \u503c\u90fd\u4e3a 0\u3002\u7ebf\u7a0b A \u5728\u6267\u884c\u65f6\uff0c\u628a\u66f4\u65b0\u540e\u7684 x \u503c\uff08\u5047\u8bbe\u503c\u4e3a 1\uff09\u4e34\u65f6\u5b58\u653e\u5728\u81ea\u5df1\u7684\u672c\u5730\u5185\u5b58 A \u4e2d\u3002\u5f53\u7ebf\u7a0b A \u548c\u7ebf\u7a0b B \u9700\u8981\u901a\u4fe1\u65f6\uff0c\u7ebf\u7a0b A \u9996\u5148\u4f1a\u628a\u81ea\u5df1\u672c\u5730\u5185\u5b58\u4e2d\u4fee\u6539\u540e\u7684 x \u503c\u5237\u65b0\u5230\u4e3b\u5185\u5b58\u4e2d\uff0c\u6b64\u65f6\u4e3b\u5185\u5b58\u4e2d\u7684 x \u503c\u53d8\u4e3a\u4e86 1\u3002\u968f\u540e\uff0c\u7ebf\u7a0b B \u5230\u4e3b\u5185\u5b58\u4e2d\u53bb\u8bfb\u53d6\u7ebf\u7a0b A \u66f4\u65b0\u540e\u7684 x \u503c\uff0c\u6b64\u65f6\u7ebf\u7a0b B \u7684\u672c\u5730\u5185\u5b58\u7684 x \u503c\u4e5f\u53d8\u4e3a\u4e86 1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u6574\u4f53\u6765\u770b\uff0c\u8fd9\u4e24\u4e2a\u6b65\u9aa4\u5b9e\u8d28\u4e0a\u662f\u7ebf\u7a0b A \u5728\u5411\u7ebf\u7a0b B \u53d1\u9001\u6d88\u606f\uff0c\u800c\u4e14\u8fd9\u4e2a\u901a\u4fe1\u8fc7\u7a0b\u5fc5\u987b\u8981\u7ecf\u8fc7\u4e3b\u5185\u5b58\u3002JMM \u901a\u8fc7\u63a7\u5236\u4e3b\u5185\u5b58\u4e0e\u6bcf\u4e2a\u7ebf\u7a0b\u7684\u672c\u5730\u5185\u5b58\u4e4b\u95f4\u7684\u4ea4\u4e92\uff0c\u6765\u4e3a java \u7a0b\u5e8f\u5458\u63d0\u4f9b\u5185\u5b58\u53ef\u89c1\u6027\u4fdd\u8bc1\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u91cd\u6392\u5e8f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6267\u884c\u7a0b\u5e8f\u65f6\u4e3a\u4e86\u63d0\u9ad8\u6027\u80fd\uff0c\u7f16\u8bd1\u5668\u548c\u5904\u7406\u5668\u5e38\u5e38\u4f1a\u5bf9\u6307\u4ee4\u505a\u91cd\u6392\u5e8f\u3002\u91cd\u6392\u5e8f\u5206\u4e09\u79cd\u7c7b\u578b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>\u7f16\u8bd1\u5668\u4f18\u5316\u7684\u91cd\u6392\u5e8f\u3002\u7f16\u8bd1\u5668\u5728\u4e0d\u6539\u53d8\u5355\u7ebf\u7a0b\u7a0b\u5e8f\u8bed\u4e49\u7684\u524d\u63d0\u4e0b\uff0c\u53ef\u4ee5\u91cd\u65b0\u5b89\u6392\u8bed\u53e5\u7684\u6267\u884c\u987a\u5e8f\u3002<\/li><li>\u6307\u4ee4\u7ea7\u5e76\u884c\u7684\u91cd\u6392\u5e8f\u3002\u73b0\u4ee3\u5904\u7406\u5668\u91c7\u7528\u4e86\u6307\u4ee4\u7ea7\u5e76\u884c\u6280\u672f\uff08Instruction-Level Parallelism\uff0c ILP\uff09\u6765\u5c06\u591a\u6761\u6307\u4ee4\u91cd\u53e0\u6267\u884c\u3002\u5982\u679c\u4e0d\u5b58\u5728\u6570\u636e\u4f9d\u8d56\u6027\uff0c\u5904\u7406\u5668\u53ef\u4ee5\u6539\u53d8\u8bed\u53e5\u5bf9\u5e94\u673a\u5668\u6307\u4ee4\u7684\u6267\u884c\u987a\u5e8f\u3002<\/li><li>\u5185\u5b58\u7cfb\u7edf\u7684\u91cd\u6392\u5e8f\u3002\u7531\u4e8e\u5904\u7406\u5668\u4f7f\u7528\u7f13\u5b58\u548c\u8bfb \/ \u5199\u7f13\u51b2\u533a\uff0c\u8fd9\u4f7f\u5f97\u52a0\u8f7d\u548c\u5b58\u50a8\u64cd\u4f5c\u770b\u4e0a\u53bb\u53ef\u80fd\u662f\u5728\u4e71\u5e8f\u6267\u884c\u3002<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece java \u6e90\u4ee3\u7801\u5230\u6700\u7ec8\u5b9e\u9645\u6267\u884c\u7684\u6307\u4ee4\u5e8f\u5217\uff0c\u4f1a\u5206\u522b\u7ecf\u5386\u4e0b\u9762\u4e09\u79cd\u91cd\u6392\u5e8f\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/xmt1139057136\/xttblog\/2022\/06\/java2.png\" alt=\"\u91cd\u6392\u5e8f\" \/><figcaption>\u91cd\u6392\u5e8f<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8ff0\u7684 1 \u5c5e\u4e8e\u7f16\u8bd1\u5668\u91cd\u6392\u5e8f\uff0c2 \u548c 3 \u5c5e\u4e8e\u5904\u7406\u5668\u91cd\u6392\u5e8f\u3002\u8fd9\u4e9b\u91cd\u6392\u5e8f\u90fd\u53ef\u80fd\u4f1a\u5bfc\u81f4\u591a\u7ebf\u7a0b\u7a0b\u5e8f\u51fa\u73b0\u5185\u5b58\u53ef\u89c1\u6027\u95ee\u9898\u3002\u5bf9\u4e8e\u7f16\u8bd1\u5668\uff0cJMM \u7684\u7f16\u8bd1\u5668\u91cd\u6392\u5e8f\u89c4\u5219\u4f1a\u7981\u6b62\u7279\u5b9a\u7c7b\u578b\u7684\u7f16\u8bd1\u5668\u91cd\u6392\u5e8f\uff08\u4e0d\u662f\u6240\u6709\u7684\u7f16\u8bd1\u5668\u91cd\u6392\u5e8f\u90fd\u8981\u7981\u6b62\uff09\u3002\u5bf9\u4e8e\u5904\u7406\u5668\u91cd\u6392\u5e8f\uff0cJMM \u7684\u5904\u7406\u5668\u91cd\u6392\u5e8f\u89c4\u5219\u4f1a\u8981\u6c42 java \u7f16\u8bd1\u5668\u5728\u751f\u6210\u6307\u4ee4\u5e8f\u5217\u65f6\uff0c\u63d2\u5165\u7279\u5b9a\u7c7b\u578b\u7684\u5185\u5b58\u5c4f\u969c\uff08memory barriers\uff0cintel \u79f0\u4e4b\u4e3a memory fence\uff09\u6307\u4ee4\uff0c\u901a\u8fc7\u5185\u5b58\u5c4f\u969c\u6307\u4ee4\u6765\u7981\u6b62\u7279\u5b9a\u7c7b\u578b\u7684\u5904\u7406\u5668\u91cd\u6392\u5e8f\uff08\u4e0d\u662f\u6240\u6709\u7684\u5904\u7406\u5668\u91cd\u6392\u5e8f\u90fd\u8981\u7981\u6b62\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">JMM \u5c5e\u4e8e\u8bed\u8a00\u7ea7\u7684\u5185\u5b58\u6a21\u578b\uff0c\u5b83\u786e\u4fdd\u5728\u4e0d\u540c\u7684\u7f16\u8bd1\u5668\u548c\u4e0d\u540c\u7684\u5904\u7406\u5668\u5e73\u53f0\u4e4b\u4e0a\uff0c\u901a\u8fc7\u7981\u6b62\u7279\u5b9a\u7c7b\u578b\u7684\u7f16\u8bd1\u5668\u91cd\u6392\u5e8f\u548c\u5904\u7406\u5668\u91cd\u6392\u5e8f\uff0c\u4e3a\u7a0b\u5e8f\u5458\u63d0\u4f9b\u4e00\u81f4\u7684\u5185\u5b58\u53ef\u89c1\u6027\u4fdd\u8bc1\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5904\u7406\u5668\u91cd\u6392\u5e8f\u4e0e\u5185\u5b58\u5c4f\u969c\u6307\u4ee4<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u73b0\u4ee3\u7684\u5904\u7406\u5668\u4f7f\u7528\u5199\u7f13\u51b2\u533a\u6765\u4e34\u65f6\u4fdd\u5b58\u5411\u5185\u5b58\u5199\u5165\u7684\u6570\u636e\u3002\u5199\u7f13\u51b2\u533a\u53ef\u4ee5\u4fdd\u8bc1\u6307\u4ee4\u6d41\u6c34\u7ebf\u6301\u7eed\u8fd0\u884c\uff0c\u5b83\u53ef\u4ee5\u907f\u514d\u7531\u4e8e\u5904\u7406\u5668\u505c\u987f\u4e0b\u6765\u7b49\u5f85\u5411\u5185\u5b58\u5199\u5165\u6570\u636e\u800c\u4ea7\u751f\u7684\u5ef6\u8fdf\u3002\u540c\u65f6\uff0c\u901a\u8fc7\u4ee5\u6279\u5904\u7406\u7684\u65b9\u5f0f\u5237\u65b0\u5199\u7f13\u51b2\u533a\uff0c\u4ee5\u53ca\u5408\u5e76\u5199\u7f13\u51b2\u533a\u4e2d\u5bf9\u540c\u4e00\u5185\u5b58\u5730\u5740\u7684\u591a\u6b21\u5199\uff0c\u53ef\u4ee5\u51cf\u5c11\u5bf9\u5185\u5b58\u603b\u7ebf\u7684\u5360\u7528\u3002\u867d\u7136\u5199\u7f13\u51b2\u533a\u6709\u8fd9\u4e48\u591a\u597d\u5904\uff0c\u4f46\u6bcf\u4e2a\u5904\u7406\u5668\u4e0a\u7684\u5199\u7f13\u51b2\u533a\uff0c\u4ec5\u4ec5\u5bf9\u5b83\u6240\u5728\u7684\u5904\u7406\u5668\u53ef\u89c1\u3002\u8fd9\u4e2a\u7279\u6027\u4f1a\u5bf9\u5185\u5b58\u64cd\u4f5c\u7684\u6267\u884c\u987a\u5e8f\u4ea7\u751f\u91cd\u8981\u7684\u5f71\u54cd\uff1a\u5904\u7406\u5668\u5bf9\u5185\u5b58\u7684\u8bfb \/ \u5199\u64cd\u4f5c\u7684\u6267\u884c\u987a\u5e8f\uff0c\u4e0d\u4e00\u5b9a\u4e0e\u5185\u5b58\u5b9e\u9645\u53d1\u751f\u7684\u8bfb \/ \u5199\u64cd\u4f5c\u987a\u5e8f\u4e00\u81f4\uff01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4e86\u5177\u4f53\u8bf4\u660e\uff0c\u8bf7\u770b\u4e0b\u9762\u793a\u4f8b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/xmt1139057136\/xttblog\/2022\/06\/java6.png\" alt=\"\u5904\u7406\u5668\u91cd\u6392\u5e8f\u4e0e\u5185\u5b58\u5c4f\u969c\u6307\u4ee4\" \/><figcaption>\u5904\u7406\u5668\u91cd\u6392\u5e8f\u4e0e\u5185\u5b58\u5c4f\u969c\u6307\u4ee4<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5904\u7406\u5668\u5141\u8bb8\u6267\u884c\u540e\u5f97\u5230\u7ed3\u679c\uff1ax = y = 0 \u5047\u8bbe\u5904\u7406\u5668 A \u548c\u5904\u7406\u5668 B \u6309\u7a0b\u5e8f\u7684\u987a\u5e8f\u5e76\u884c\u6267\u884c\u5185\u5b58\u8bbf\u95ee\uff0c\u6700\u7ec8\u5374\u53ef\u80fd\u5f97\u5230 x = y = 0 \u7684\u7ed3\u679c\u3002\u5177\u4f53\u7684\u539f\u56e0\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/xmt1139057136\/xttblog\/2022\/06\/java3.png\" alt=\"\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc\u5904\u7406\u5668 A \u548c\u5904\u7406\u5668 B \u53ef\u4ee5\u540c\u65f6\u628a\u5171\u4eab\u53d8\u91cf\u5199\u5165\u81ea\u5df1\u7684\u5199\u7f13\u51b2\u533a\uff08A1\uff0cB1\uff09\uff0c\u7136\u540e\u4ece\u5185\u5b58\u4e2d\u8bfb\u53d6\u53e6\u4e00\u4e2a\u5171\u4eab\u53d8\u91cf\uff08A2\uff0cB2\uff09\uff0c\u6700\u540e\u624d\u628a\u81ea\u5df1\u5199\u7f13\u5b58\u533a\u4e2d\u4fdd\u5b58\u7684\u810f\u6570\u636e\u5237\u65b0\u5230\u5185\u5b58\u4e2d\uff08A3\uff0cB3\uff09\u3002\u5f53\u4ee5\u8fd9\u79cd\u65f6\u5e8f\u6267\u884c\u65f6\uff0c\u7a0b\u5e8f\u5c31\u53ef\u4ee5\u5f97\u5230 x = y = 0 \u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u5185\u5b58\u64cd\u4f5c\u5b9e\u9645\u53d1\u751f\u7684\u987a\u5e8f\u6765\u770b\uff0c\u76f4\u5230\u5904\u7406\u5668 A \u6267\u884c A3 \u6765\u5237\u65b0\u81ea\u5df1\u7684\u5199\u7f13\u5b58\u533a\uff0c\u5199\u64cd\u4f5c A1 \u624d\u7b97\u771f\u6b63\u6267\u884c\u4e86\u3002\u867d\u7136\u5904\u7406\u5668 A \u6267\u884c\u5185\u5b58\u64cd\u4f5c\u7684\u987a\u5e8f\u4e3a\uff1aA1-&gt;A2\uff0c\u4f46\u5185\u5b58\u64cd\u4f5c\u5b9e\u9645\u53d1\u751f\u7684\u987a\u5e8f\u5374\u662f\uff1aA2-&gt;A1\u3002\u6b64\u65f6\uff0c\u5904\u7406\u5668 A \u7684\u5185\u5b58\u64cd\u4f5c\u987a\u5e8f\u88ab\u91cd\u6392\u5e8f\u4e86\uff08\u5904\u7406\u5668 B \u7684\u60c5\u51b5\u548c\u5904\u7406\u5668 A \u4e00\u6837\uff0c\u8fd9\u91cc\u5c31\u4e0d\u8d58\u8ff0\u4e86\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc\u7684\u5173\u952e\u662f\uff0c\u7531\u4e8e\u5199\u7f13\u51b2\u533a\u4ec5\u5bf9\u81ea\u5df1\u7684\u5904\u7406\u5668\u53ef\u89c1\uff0c\u5b83\u4f1a\u5bfc\u81f4\u5904\u7406\u5668\u6267\u884c\u5185\u5b58\u64cd\u4f5c\u7684\u987a\u5e8f\u53ef\u80fd\u4f1a\u4e0e\u5185\u5b58\u5b9e\u9645\u7684\u64cd\u4f5c\u6267\u884c\u987a\u5e8f\u4e0d\u4e00\u81f4\u3002\u7531\u4e8e\u73b0\u4ee3\u7684\u5904\u7406\u5668\u90fd\u4f1a\u4f7f\u7528\u5199\u7f13\u51b2\u533a\uff0c\u56e0\u6b64\u73b0\u4ee3\u7684\u5904\u7406\u5668\u90fd\u4f1a\u5141\u8bb8\u5bf9\u5199 &#8211; \u8bfb\u64cd\u505a\u91cd\u6392\u5e8f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u9762\u662f\u5e38\u89c1\u5904\u7406\u5668\u5141\u8bb8\u7684\u91cd\u6392\u5e8f\u7c7b\u578b\u7684\u5217\u8868\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/xmt1139057136\/xttblog\/2022\/06\/java5.png\" alt=\"\u5e38\u89c1\u5904\u7406\u5668\u5141\u8bb8\u7684\u91cd\u6392\u5e8f\u7c7b\u578b\" \/><figcaption>\u5e38\u89c1\u5904\u7406\u5668\u5141\u8bb8\u7684\u91cd\u6392\u5e8f\u7c7b\u578b<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8868\u5355\u5143\u683c\u4e2d\u7684\u201cN\u201d\u8868\u793a\u5904\u7406\u5668\u4e0d\u5141\u8bb8\u4e24\u4e2a\u64cd\u4f5c\u91cd\u6392\u5e8f\uff0c\u201cY\u201d\u8868\u793a\u5141\u8bb8\u91cd\u6392\u5e8f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u4e0a\u8868\u6211\u4eec\u53ef\u4ee5\u770b\u51fa\uff1a\u5e38\u89c1\u7684\u5904\u7406\u5668\u90fd\u5141\u8bb8 Store-Load \u91cd\u6392\u5e8f\uff1b\u5e38\u89c1\u7684\u5904\u7406\u5668\u90fd\u4e0d\u5141\u8bb8\u5bf9\u5b58\u5728\u6570\u636e\u4f9d\u8d56\u7684\u64cd\u4f5c\u505a\u91cd\u6392\u5e8f\u3002sparc-TSO \u548c x86 \u62e5\u6709\u76f8\u5bf9\u8f83\u5f3a\u7684\u5904\u7406\u5668\u5185\u5b58\u6a21\u578b\uff0c\u5b83\u4eec\u4ec5\u5141\u8bb8\u5bf9\u5199 &#8211; \u8bfb\u64cd\u4f5c\u505a\u91cd\u6392\u5e8f\uff08\u56e0\u4e3a\u5b83\u4eec\u90fd\u4f7f\u7528\u4e86\u5199\u7f13\u51b2\u533a\uff09\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u6ce8 1\uff1asparc-TSO \u662f\u6307\u4ee5 TSO(Total Store Order) \u5185\u5b58\u6a21\u578b\u8fd0\u884c\u65f6\uff0csparc \u5904\u7406\u5668\u7684\u7279\u6027\u3002<\/li><li>\u6ce8 2\uff1a\u4e0a\u8868\u4e2d\u7684 x86 \u5305\u62ec x64 \u53ca AMD64\u3002<\/li><li>\u6ce8 3\uff1a\u7531\u4e8e ARM \u5904\u7406\u5668\u7684\u5185\u5b58\u6a21\u578b\u4e0e PowerPC \u5904\u7406\u5668\u7684\u5185\u5b58\u6a21\u578b\u975e\u5e38\u7c7b\u4f3c\uff0c\u672c\u6587\u5c06\u5ffd\u7565\u5b83\u3002<\/li><li>\u6ce8 4\uff1a\u6570\u636e\u4f9d\u8d56\u6027\u540e\u6587\u4f1a\u4e13\u95e8\u8bf4\u660e\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4e86\u4fdd\u8bc1\u5185\u5b58\u53ef\u89c1\u6027\uff0cjava \u7f16\u8bd1\u5668\u5728\u751f\u6210\u6307\u4ee4\u5e8f\u5217\u7684\u9002\u5f53\u4f4d\u7f6e\u4f1a\u63d2\u5165\u5185\u5b58\u5c4f\u969c\u6307\u4ee4\u6765\u7981\u6b62\u7279\u5b9a\u7c7b\u578b\u7684\u5904\u7406\u5668\u91cd\u6392\u5e8f\u3002JMM \u628a\u5185\u5b58\u5c4f\u969c\u6307\u4ee4\u5206\u4e3a\u4e0b\u5217\u56db\u7c7b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/xmt1139057136\/xttblog\/2022\/06\/java7.png\" alt=\"\u5e38\u89c1\u5904\u7406\u5668\u5141\u8bb8\u7684\u91cd\u6392\u5e8f\u7c7b\u578b\" \/><figcaption>\u5e38\u89c1\u5904\u7406\u5668\u5141\u8bb8\u7684\u91cd\u6392\u5e8f\u7c7b\u578b<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">StoreLoad Barriers \u662f\u4e00\u4e2a\u201c\u5168\u80fd\u578b\u201d\u7684\u5c4f\u969c\uff0c\u5b83\u540c\u65f6\u5177\u6709\u5176\u4ed6\u4e09\u4e2a\u5c4f\u969c\u7684\u6548\u679c\u3002\u73b0\u4ee3\u7684\u591a\u5904\u7406\u5668\u5927\u90fd\u652f\u6301\u8be5\u5c4f\u969c\uff08\u5176\u4ed6\u7c7b\u578b\u7684\u5c4f\u969c\u4e0d\u4e00\u5b9a\u88ab\u6240\u6709\u5904\u7406\u5668\u652f\u6301\uff09\u3002\u6267\u884c\u8be5\u5c4f\u969c\u5f00\u9500\u4f1a\u5f88\u6602\u8d35\uff0c\u56e0\u4e3a\u5f53\u524d\u5904\u7406\u5668\u901a\u5e38\u8981\u628a\u5199\u7f13\u51b2\u533a\u4e2d\u7684\u6570\u636e\u5168\u90e8\u5237\u65b0\u5230\u5185\u5b58\u4e2d\uff08buffer fully flush\uff09\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">happens-before<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece JDK5 \u5f00\u59cb\uff0cjava \u4f7f\u7528\u65b0\u7684 JSR -133 \u5185\u5b58\u6a21\u578b\uff08\u672c\u6587\u9664\u975e\u7279\u522b\u8bf4\u660e\uff0c\u9488\u5bf9\u7684\u90fd\u662f JSR- 133 \u5185\u5b58\u6a21\u578b\uff09\u3002JSR-133 \u63d0\u51fa\u4e86 happens-before \u7684\u6982\u5ff5\uff0c\u901a\u8fc7\u8fd9\u4e2a\u6982\u5ff5\u6765\u9610\u8ff0\u64cd\u4f5c\u4e4b\u95f4\u7684\u5185\u5b58\u53ef\u89c1\u6027\u3002\u5982\u679c\u4e00\u4e2a\u64cd\u4f5c\u6267\u884c\u7684\u7ed3\u679c\u9700\u8981\u5bf9\u53e6\u4e00\u4e2a\u64cd\u4f5c\u53ef\u89c1\uff0c\u90a3\u4e48\u8fd9\u4e24\u4e2a\u64cd\u4f5c\u4e4b\u95f4\u5fc5\u987b\u5b58\u5728 happens-before \u5173\u7cfb\u3002\u8fd9\u91cc\u63d0\u5230\u7684\u4e24\u4e2a\u64cd\u4f5c\u65e2\u53ef\u4ee5\u662f\u5728\u4e00\u4e2a\u7ebf\u7a0b\u4e4b\u5185\uff0c\u4e5f\u53ef\u4ee5\u662f\u5728\u4e0d\u540c\u7ebf\u7a0b\u4e4b\u95f4\u3002 \u4e0e\u7a0b\u5e8f\u5458\u5bc6\u5207\u76f8\u5173\u7684 happens-before \u89c4\u5219\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u7a0b\u5e8f\u987a\u5e8f\u89c4\u5219\uff1a\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u7684\u6bcf\u4e2a\u64cd\u4f5c\uff0chappens- before \u4e8e\u8be5\u7ebf\u7a0b\u4e2d\u7684\u4efb\u610f\u540e\u7eed\u64cd\u4f5c\u3002<\/li><li>\u76d1\u89c6\u5668\u9501\u89c4\u5219\uff1a\u5bf9\u4e00\u4e2a\u76d1\u89c6\u5668\u9501\u7684\u89e3\u9501\uff0chappens- before \u4e8e\u968f\u540e\u5bf9\u8fd9\u4e2a\u76d1\u89c6\u5668\u9501\u7684\u52a0\u9501\u3002<\/li><li>volatile \u53d8\u91cf\u89c4\u5219\uff1a\u5bf9\u4e00\u4e2a volatile \u57df\u7684\u5199\uff0chappens- before \u4e8e\u4efb\u610f\u540e\u7eed\u5bf9\u8fd9\u4e2a volatile \u57df\u7684\u8bfb\u3002<\/li><li>\u4f20\u9012\u6027\uff1a\u5982\u679c A happens- before B\uff0c\u4e14 B happens- before C\uff0c\u90a3\u4e48 A happens- before C\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\uff0c\u4e24\u4e2a\u64cd\u4f5c\u4e4b\u95f4\u5177\u6709 happens-before \u5173\u7cfb\uff0c\u5e76\u4e0d\u610f\u5473\u7740\u524d\u4e00\u4e2a\u64cd\u4f5c\u5fc5\u987b\u8981\u5728\u540e\u4e00\u4e2a\u64cd\u4f5c\u4e4b\u524d\u6267\u884c\uff01happens-before \u4ec5\u4ec5\u8981\u6c42\u524d\u4e00\u4e2a\u64cd\u4f5c\uff08\u6267\u884c\u7684\u7ed3\u679c\uff09\u5bf9\u540e\u4e00\u4e2a\u64cd\u4f5c\u53ef\u89c1\uff0c\u4e14\u524d\u4e00\u4e2a\u64cd\u4f5c\u6309\u987a\u5e8f\u6392\u5728\u7b2c\u4e8c\u4e2a\u64cd\u4f5c\u4e4b\u524d\uff08the first is visible to and ordered before the second\uff09\u3002happens- before \u7684\u5b9a\u4e49\u5f88\u5fae\u5999\uff0c\u540e\u6587\u4f1a\u5177\u4f53\u8bf4\u660e happens-before \u4e3a\u4ec0\u4e48\u8981\u8fd9\u4e48\u5b9a\u4e49\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">happens-before \u4e0e JMM \u7684\u5173\u7cfb\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/xmt1139057136\/xttblog\/2022\/06\/java4.png\" alt=\"happens-before \u4e0e JMM \u7684\u5173\u7cfb\" \/><figcaption>happens-before \u4e0e JMM \u7684\u5173\u7cfb<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u4e0a\u56fe\u6240\u793a\uff0c\u4e00\u4e2a happens-before \u89c4\u5219\u901a\u5e38\u5bf9\u5e94\u4e8e\u591a\u4e2a\u7f16\u8bd1\u5668\u91cd\u6392\u5e8f\u89c4\u5219\u548c\u5904\u7406\u5668\u91cd\u6392\u5e8f\u89c4\u5219\u3002\u5bf9\u4e8e java \u7a0b\u5e8f\u5458\u6765\u8bf4\uff0chappens-before \u89c4\u5219\u7b80\u5355\u6613\u61c2\uff0c\u5b83\u907f\u514d\u7a0b\u5e8f\u5458\u4e3a\u4e86\u7406\u89e3 JMM \u63d0\u4f9b\u7684\u5185\u5b58\u53ef\u89c1\u6027\u4fdd\u8bc1\u800c\u53bb\u5b66\u4e60\u590d\u6742\u7684\u91cd\u6392\u5e8f\u89c4\u5219\u4ee5\u53ca\u8fd9\u4e9b\u89c4\u5219\u7684\u5177\u4f53\u5b9e\u73b0\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u53c2\u8003\u6587\u732e<\/h2>\n\n\n\n<ol class=\"wp-block-list\"><li><a href=\"http:\/\/www.amazon.com\/Programming-Language-Pragmatics-Third-Michael\/dp\/0123745144\/ref=sr_1_1?s=books&amp;ie=UTF8&amp;qid=1347794595&amp;sr=1-1&amp;keywords=Michael+L.Scott\">Programming Language Pragmatics, Third Edition<\/a><\/li><li><a href=\"http:\/\/docs.oracle.com\/javase\/specs\/jls\/se5.0\/jls3.pdf\">The Java Language Specification, Third Edition<\/a><\/li><li><a href=\"http:\/\/www.cs.umd.edu\/~pugh\/java\/memoryModel\/jsr133.pdf\">JSR-133: Java Memory Model and Thread Specification<\/a><\/li><li><a href=\"http:\/\/www.ibm.com\/developerworks\/java\/library\/j-jtp03304\/index.html\">Java theory and practice: Fixing the Java Memory Model, Part 2<\/a><\/li><li><a href=\"http:\/\/www.cl.cam.ac.uk\/~pes20\/ppc-supplemental\/pldi105-sarkar.pdf\">Understanding POWER Multiprocessors<\/a><\/li><li><a href=\"http:\/\/www.amazon.com\/Concurrent-Programming-Windows-Joe-Duffy\/dp\/032143482X\/ref=sr_1_1?ie=UTF8&amp;s=books&amp;qid=1262571776&amp;sr=1-1\">Concurrent Programming on Windows<\/a><\/li><li><a href=\"http:\/\/www.amazon.com\/Art-Multiprocessor-Programming-Maurice-Herlihy\/dp\/0123705916\/ref=sr_1_1?ie=UTF8&amp;s=books&amp;qid=1248834374&amp;sr=1-1\">The Art of Multiprocessor Programming<\/a><\/li><li><a href=\"http:\/\/download.intel.com\/products\/processor\/manual\/253668.pdf\">Intel\u00ae 64 and IA-32 ArchitecturesvSoftware Developer\u2019s Manual Volume 3A: System Programming Guide, Part 1<\/a><\/li><li><a href=\"http:\/\/www.amazon.com\/Java-Concurrency-Practice-Brian-Goetz\/dp\/0321349601\/ref=pd_sim_b_1\">Java Concurrency in Practice<\/a><\/li><li><a href=\"http:\/\/gee.cs.oswego.edu\/dl\/jmm\/cookbook.html\">The JSR-133 Cookbook for Compiler Writers<\/a><\/li><\/ol>\n<!-- <audio autoplay=\"autoplay\" height=\"100\" width=\"100\" hidden=\"true\"><source src=\"https:\/\/c.coka.la\/orAvPR.mp3\" type=\"audio\/mp3\"\/><\/audio><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/> --><p><!-- <img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/>--><img decoding=\"async\" src=\"https:\/\/saas.51autoparts.cn\/api\/admin\/sys-file\/oss\/file?fileName=84db51f8561e448f9a4fda2eff0811f9.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/><\/p><p>\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01<b>\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1a<font color=\"red\">xttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p><p>\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a<a href=\"https:\/\/www.xttblog.com\">\u4e1a\u4f59\u8349<\/a>\uff1a &raquo; <a href=\"https:\/\/www.xttblog.com\/?p=5351\">\u4e00\u6587\u770b\u61c2Java\u7a0b\u5e8f\u5458\u5fc5\u4f1a\u7684\u5185\u5b58\u6a21\u578b\uff01<\/a><\/p><!-- <div class=\"bd-reward-stl\"><button id=\"bdRewardBtn\"><span><\/span><\/button><\/div> -->","protected":false},"excerpt":{"rendered":"<p>\u5e76\u53d1\u7f16\u7a0b\u6a21\u578b\u7684\u5206\u7c7b \u5728\u5e76\u53d1\u7f16\u7a0b\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u5904\u7406\u4e24\u4e2a\u5173\u952e\u95ee\u9898\uff1a\u7ebf\u7a0b\u4e4b\u95f4\u5982\u4f55\u901a\u4fe1\u53ca\u7ebf\u7a0b\u4e4b\u95f4\u5982\u4f55\u540c\u6b65\uff08\u8fd9\u91cc\u7684\u7ebf\u7a0b\u662f\u6307 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[261,1647,657,1646,599],"class_list":["post-5351","post","type-post","status-publish","format-standard","hentry","category-java","tag-java","tag-jvm","tag-shared-memory","tag-1646","tag-599"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/5351","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5351"}],"version-history":[{"count":1,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/5351\/revisions"}],"predecessor-version":[{"id":5352,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/5351\/revisions\/5352"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5351"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5351"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5351"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}