{"id":7953,"date":"2023-01-28T14:25:22","date_gmt":"2023-01-28T06:25:22","guid":{"rendered":"https:\/\/egonlin.com\/?p=7953"},"modified":"2023-01-28T14:25:22","modified_gmt":"2023-01-28T06:25:22","slug":"25-%e5%8f%98%e9%87%8f%e5%a3%b0%e6%98%8e%e5%91%a8%e6%9c%9f%e4%b8%8egc%e6%9c%ba%e5%88%b6","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=7953","title":{"rendered":"25 \u53d8\u91cf\u58f0\u660e\u5468\u671f\u4e0eGC\u673a\u5236"},"content":{"rendered":"<h1>\u53d8\u91cf\u58f0\u660e\u5468\u671f\u4e0eGC\u673a\u5236<\/h1>\n<h2>\u4e00 \u53d8\u91cf\u7684\u751f\u547d\u5468\u671f<\/h2>\n<h3>1.1 \u533a\u5206\u4f5c\u7528\u57df\u4e0e\u751f\u547d\u5468\u671f<\/h3>\n<p>\u53d8\u91cf\u7684\u4f5c\u7528\u57df VS \u53d8\u91cf\u7684\u751f\u547d\u5468\u671f<\/p>\n<ul>\n<li>1\u3001\u4f5c\u7528\u57df\u662f\u4e00\u4e2a\u7f16\u8bd1\u65f6\u7684\u5c5e\u6027\uff1a\u58f0\u660e\u4f4d\u7f6e\u51b3\u5b9a\u4e86\u4f5c\u7528\u57df\u7684\u5c42\u5c42\u5d4c\u5957\u5173\u7cfb\u800c\u4e0d\u662f\u8c03\u7528\u4f4d\u7f6e<\/li>\n<li>2\u3001\u751f\u547d\u660e\u5468\u671f\u662f\u4e00\u4e2a\u8fd0\u884c\u65f6\u7684\u6982\u5ff5\uff1a\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u53d8\u91cf\u4f1a\u88ab\u56de\u6536<\/li>\n<\/ul>\n<h3>1.2 \u53d8\u91cf\u751f\u547d\u5468\u671f\u6982\u8ff0<\/h3>\n<p>\u53d8\u91cf\u7684\u751f\u547d\u5468\u671f\u6307\u7684\u662f\u5728\u7a0b\u5e8f\u8fd0\u884c\u671f\u95f4\u53d8\u91cf\u6709\u6548\u5b58\u5728\u7684\u65f6\u95f4\u95f4\u9694<\/p>\n<p>\u53d8\u91cf\u751f\u547d\u5468\u671f\u7684\u957f\u77ed\u53ea\u53d6\u51b3\u4e8e\u662f\u5176\u5426\u53ef\u8fbe\uff08\u5373\u53ef\u4ee5\u88ab\u5f15\u7528\u5230\uff09<\/p>\n<p>1\u3001\u5bf9\u4e8e\u5728\u5305\u4e00\u7ea7\u58f0\u660e\u7684\u53d8\u91cf\u6765\u8bf4\uff0c\u5b83\u4eec\u5728\u6574\u4e2a\u7a0b\u5e8f\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u90fd\u662f\u53ef\u8fbe\u7684\uff0c\u6240\u4ee5\u5b83\u4eec\u7684\u751f\u547d\u5468\u671f\u548c\u6574\u4e2a\u7a0b\u5e8f\u7684\u8fd0\u884c\u5468\u671f\u662f\u4e00\u81f4\u7684\u3002<\/p>\n<p>2\u3001\u800c\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u5c40\u90e8\u53d8\u91cf\u7684\u53ef\u8fbe\u6027\u662f\uff1a\u521b\u5efa\u4e4b\u540e\u5b58\u5728\u4e0e\u5176\u76f8\u5173\u8054\u7684\u5f15\u7528\u4e86\u4fbf\u53ef\u8fbe\uff0c\u4e0d\u5b58\u4efb\u4f55\u4e0e\u5176\u76f8\u5173\u8054\u7684\u5f15\u7528\u4e86\u5c31\u4e0d\u53ef\u8fbe\uff0c\u6240\u4ee5\u5b83\u4eec\u7684\u751f\u547d\u5468\u671f\u5219\u662f\u52a8\u6001\u7684\uff0c\u5373\u4ece\u6bcf\u6b21\u521b\u5efa\u4e00\u4e2a\u65b0\u53d8\u91cf\u7684\u58f0\u660e\u8bed\u53e5\u5f00\u59cb\uff0c\u76f4\u5230\u8be5\u53d8\u91cf\u4e0d\u518d\u88ab\u5f15\u7528\u5c31\u7ec8\u6b62\u3002\u56e0\u6b64\u4e00\u4e2a\u5faa\u73af\u8fed\u4ee3\u5185\u90e8\u7684\u5c40\u90e8\u53d8\u91cf\u7684\u751f\u547d\u5468\u671f\u53ef\u80fd\u8d85\u51fa\u5176\u5c40\u90e8\u4f5c\u7528\u57df\uff0c\u4f8b\u5982\u88ab\u5916\u90e8\u4f5c\u7528\u57df\u7684\u53d8\u91cf\u5f15\u7528\u3002\u540c\u7406\uff0c\u5c40\u90e8\u53d8\u91cf\u53ef\u80fd\u5728\u51fd\u6570\u8fd4\u56de\u4e4b\u540e\u4f9d\u7136\u5b58\u5728\u3002<\/p>\n<h3>1.3 \u751f\u547d\u5468\u671f\u7ed3\u675f\u4e0e\u5783\u573e\u56de\u6536\u6982\u8ff0<\/h3>\n<p>\u53d8\u91cf\u4e0d\u53ef\u8fbe\u7684\u53d8\u91cf\u610f\u5473\u7740\u5176\u751f\u547d\u5468\u671f\u7684\u7ed3\u675f\uff0c\u7136\u540e\u5176\u5360\u7528\u7684\u5b58\u50a8\u7a7a\u95f4\u53ef\u80fd\u88ab\u56de\u6536\uff0c\u6709\u53ef\u80fd\u662f\u88ab\u7cfb\u7edf\u56de\u6536\u3001\u6709\u53ef\u80fd\u662f\u88abGC\u673a\u5236\u56de\u6536\uff08\u5728\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0c\u6808\u533a\u7684\u7ba1\u7406\u662f\u7531\u7cfb\u7edf\u8d1f\u8d23\u7684\uff0cgo\u81ea\u5e26\u7684gc\u673a\u5236\u7ba1\u7406\u7684\u662f\u5806\u533a\uff09\u3002<\/p>\n<p>\u90a3Go\u8bed\u8a00\u7684\u81ea\u52a8\u573e\u6536\u96c6\u5668gc\u662f\u5982\u4f55\u77e5\u9053\u4e00\u4e2a\u53d8\u91cf\u662f\u4f55\u65f6\u53ef\u4ee5\u88ab\u56de\u6536\u7684\u5462\uff1f\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u907f\u5f00\u5b8c\u6574\u7684\u6280\u672f\u7ec6\u8282\uff0c\u57fa\u672c\u7684\u5b9e\u73b0\u601d\u8def\u662f\uff0c\u4ece\u6bcf\u4e2a\u5305\u7ea7\u7684\u53d8\u91cf\u548c\u6bcf\u4e2a\u5f53\u524d\u8fd0\u884c\u51fd\u6570\u7684\u6bcf\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf\u5f00\u59cb\uff0c\u901a\u8fc7\u6307\u9488\u6216\u5f15\u7528\u7684\u8bbf\u95ee\u8def\u5f84\u904d\u5386\uff0c\u662f\u5426\u53ef\u4ee5\u627e\u5230\u8be5\u53d8\u91cf\u3002\u5982\u679c\u4e0d\u5b58\u5728\u8fd9\u6837\u7684\u8bbf\u95ee\u8def\u5f84\uff0c\u90a3\u4e48\u8bf4\u660e\u8be5\u53d8\u91cf\u662f\u4e0d\u53ef\u8fbe\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u5b83\u662f\u5426\u5b58\u5728\u5e76\u4e0d\u4f1a\u5f71\u54cd\u7a0b\u5e8f\u540e\u7eed\u7684\u8ba1\u7b97\u7ed3\u679c\uff0c\u6b64\u65f6\u8be5\u53d8\u91cf\u5c31\u4f1a\u88abgc\u56de\u6536\u3002<\/p>\n<p>\u6b64\u5916\u5f3a\u8c03\u4e00\u70b9\uff1a\u867d\u7136Go\u7684\u5783\u573e\u56de\u6536\u673a\u5236\u4f1a\u56de\u6536\u4e0d\u88ab\u4f7f\u7528\u7684\u5185\u5b58\uff0c\u4f46\u662f\u8fd9\u4e0d\u5305\u62ec\u64cd\u4f5c\u7cfb\u7edf\u5c42\u9762\u7684\u8d44\u6e90\uff0c\u6bd4\u5982\u6253\u5f00\u7684\u6587\u4ef6\u3001\u7f51\u7edc\u8fde\u63a5\u3002\u56e0\u6b64\u6211\u4eec\u5fc5\u987b\u663e\u5f0f\u7684\u91ca\u653e\u8fd9\u4e9b\u8d44\u6e90\u3002<\/p>\n<p>Go\u8bed\u8a00\u7684\u81ea\u52a8\u5783\u573e\u6536\u96c6\u5668\u5bf9\u7f16\u5199\u6b63\u786e\u7684\u4ee3\u7801\u662f\u4e00\u4e2a\u5de8\u5927\u7684\u5e2e\u52a9\uff0c\u4f46\u4e5f\u5e76\u4e0d\u662f\u8bf4\u4f60\u5b8c\u5168\u4e0d\u7528\u8003\u8651\u5185\u5b58\u4e86\u3002\u4f60\u867d\u7136\u4e0d\u9700\u8981\u663e\u5f0f\u5730\u5206\u914d\u548c\u91ca\u653e\u5185\u5b58\uff0c\u4f46\u662f\u8981\u7f16\u5199\u9ad8\u6548\u7684\u7a0b\u5e8f\u4f60\u4f9d\u7136\u9700\u8981\u4e86\u89e3\u53d8\u91cf\u7684\u751f\u547d\u5468\u671f\u3002\u4f8b\u5982\uff0c\u5982\u679c\u5c06\u6307\u5411\u77ed\u751f\u547d\u5468\u671f\u5bf9\u8c61\u7684\u6307\u9488\u4fdd\u5b58\u5230\u5177\u6709\u957f\u751f\u547d\u5468\u671f\u7684\u5bf9\u8c61\u4e2d\uff0c\u7279\u522b\u662f\u4fdd\u5b58\u5230\u5168\u5c40\u53d8\u91cf\u65f6\uff0c\u4f1a\u963b\u6b62\u5bf9\u77ed\u751f\u547d\u5468\u671f\u5bf9\u8c61\u7684\u5783\u573e\u56de\u6536\uff08\u4ece\u800c\u53ef\u80fd\u5f71\u54cd\u7a0b\u5e8f\u7684\u6027\u80fd\uff09\u3002<\/p>\n<h2>\u4e8c \u5783\u573e\u56de\u6536\u673a\u5236<\/h2>\n<h3>2.1 \u5783\u573e\u56de\u6536\u673a\u5236\u4ecb\u7ecd<\/h3>\n<p>1\u3001\u4ec0\u4e48\u662f\u5783\u573e\uff1f<\/p>\n<p>\u7a0b\u5e8f\u521b\u5efa\u5bf9\u8c61\u7b49\u5f15\u7528\u7c7b\u578b\u5b9e\u4f53\u65f6\u4f1a\u5728\u865a\u62df\u5185\u5b58\u4e2d\u5206\u914d\u7ed9\u5b83\u4eec\u4e00\u5757\u5185\u5b58\u7a7a\u95f4\uff0c\u5982\u679c\u8be5\u5185\u5b58\u7a7a\u95f4\u4e0d\u518d\u88ab\u4efb\u4f55\u5f15\u7528\u53d8\u91cf\u5f15\u7528\u65f6\u5c31\u6210\u4e3a\u9700\u8981\u88ab\u56de\u6536\u7684\u5783\u573e\u3002<\/p>\n<p>\u62d3\u5c55\u9605\u8bfb\uff1a\u865a\u62df\u5185\u5b58\u4e0e\u7269\u7406\u5185\u5b58<\/p>\n<pre><code class=\"language-go\">\u89c1\uff1ahttps:\/\/www.cnblogs.com\/linhaifeng\/p\/15801949.html<\/code><\/pre>\n<p>2\u3001\u4ec0\u4e48\u662f\u5783\u573e\u56de\u6536\u673a\u5236<\/p>\n<p>\u5783\u573e\u56de\u6536Garbage Collection\uff0c\u7f29\u5199\u4e3aGC\uff0c\u662f\u4e00\u79cd\u81ea\u52a8\u5185\u5b58\u7ba1\u7406\u673a\u5236\uff0c\u7528\u6765\u81ea\u52a8\u8bc6\u522b\u5e76\u91ca\u653e\u56de\u6536\u4e0d\u4f7f\u7528\u7684\u5185\u5b58\u5bf9\u8c61\uff0c\u9632\u6b62\u5185\u5b58\u6cc4\u9732<\/p>\n<p>\u62d3\u5c55\u9605\u8bfb\uff1a\u5185\u5b58\u6cc4\u9732<\/p>\n<pre><code class=\"language-go\">\u201c\u5185\u5b58\u6cc4\u9732\u201d\uff08Memory Leak\uff09\u8fd9\u4e2a\u8bcd\u770b\u4f3c\u81ea\u5df1\u5f88\u719f\u6089\uff0c\u53ef\u5b9e\u9645\u4e0a\u5374\u4e5f\u4ece\u6ca1\u6709\u770b\u8fc7\u5b83\u7684\u51c6\u786e\u542b\u4e49\u3002\n\n1\u3001\u4ec0\u4e48\u662f\u5185\u5b58\u6cc4\u9732\n\u5185\u5b58\u6cc4\u9732\uff0c\u662f\u4ece\u64cd\u4f5c\u7cfb\u7edf\u7684\u89d2\u5ea6\u4e0a\u6765\u9610\u8ff0\u7684\uff0c\u5f62\u8c61\u7684\u6bd4\u55bb\u5c31\u662f\u201c\u64cd\u4f5c\u7cfb\u7edf\u53ef\u63d0\u4f9b\u7ed9\u6240\u6709\u8fdb\u7a0b\u7684\u5b58\u50a8\u7a7a\u95f4(\u865a\u62df\u5185\u5b58\u7a7a\u95f4)\u6b63\u5728\u88ab\u67d0\u4e2a\u8fdb\u7a0b\u69a8\u5e72\u201d\uff0c\u5bfc\u81f4\u7684\u539f\u56e0\u5c31\u662f\u7a0b\u5e8f\u5728\u8fd0\u884c\u7684\u65f6\u5019\uff0c\u4f1a\u4e0d\u65ad\u5730\u52a8\u6001\u5f00\u8f9f\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u8fd9\u4e9b\u5b58\u50a8\u7a7a\u95f4\u5728\u5728\u8fd0\u884c\u7ed3\u675f\u4e4b\u540e\u5e76\u6ca1\u6709\u88ab\u53ca\u65f6\u91ca\u653e\u6389\u3002\u5e94\u7528\u7a0b\u5e8f\u5728\u5206\u914d\u4e86\u67d0\u6bb5\u5185\u5b58\u4e4b\u540e\uff0c\u7531\u4e8e\u8bbe\u8ba1\u7684\u9519\u8bef\uff0c\u4f1a\u5bfc\u81f4\u7a0b\u5e8f\u5931\u53bb\u4e86\u5bf9\u8be5\u6bb5\u5185\u5b58\u7684\u63a7\u5236\uff0c\u9020\u6210\u4e86\u5185\u5b58\u7a7a\u95f4\u7684\u6d6a\u8d39\u3002\n\n2\u3001\u4ec0\u4e48\u65f6\u5019\u4f1a\u6cc4\u9732\n\u5982\u679c\u7a0b\u5e8f\u5728\u5185\u5b58\u7a7a\u95f4\u5185\u7533\u8bf7\u4e86\u4e00\u5757\u5185\u5b58\uff0c\u4e4b\u540e\u7a0b\u5e8f\u8fd0\u884c\u7ed3\u675f\u4e4b\u540e\uff0c\u6ca1\u6709\u628a\u8fd9\u5757\u5185\u5b58\u7a7a\u95f4\u91ca\u653e\u6389\uff0c\u800c\u4e14\u5bf9\u5e94\u7684\u7a0b\u5e8f\u53c8\u6ca1\u6709\u5f88\u597d\u7684gc\u673a\u5236\u53bb\u5bf9\u7a0b\u5e8f\u7533\u8bf7\u7684\u7a7a\u95f4\u8fdb\u884c\u56de\u6536\uff0c\u8fd9\u6837\u5c31\u4f1a\u5bfc\u81f4\u5185\u5b58\u6cc4\u9732\u3002\n\n3\u3001\u6cc4\u9732\u540e\u6709\u4f55\u5f71\u54cd\n\u4ece\u7528\u6237\u7684\u89d2\u5ea6\u6765\u8bf4\uff0c\u5185\u5b58\u6cc4\u9732\u672c\u8eab\u4e0d\u4f1a\u6709\u4ec0\u4e48\u5371\u5bb3\uff0c\u56e0\u4e3a\u8fd9\u4e0d\u662f\u5bf9\u7528\u6237\u529f\u80fd\u7684\u5f71\u54cd\uff0c\u4f46\u662f\u201c\u5185\u5b58\u6cc4\u9732\u201d\u5982\u679c\u52a0\u5267\uff0c\u5219\u4f1a\u5bfc\u81f4\u5185\u5b58\u7a7a\u95f4\u8017\u5c3d\u7cfb\u7edf\u5d29\u6e83\uff0c\u7528\u6237\u7a0b\u5e8f\u81ea\u7136\u4e0d\u80fd\u5e78\u514d\n\n4\u3001\u5185\u5b58\u6cc4\u9732\u7684\u5173\u6ce8\u70b9\n\u5bf9\u4e8e C \u548c C++ \u8fd9\u79cd\u6ca1\u6709 Garbage Collection \u7684\u8bed\u8a00\u6765\u8bb2\uff0c\u6211\u4eec\u4e3b\u8981\u5173\u6ce8\u4e24\u79cd\u7c7b\u578b\u7684\u5185\u5b58\u6cc4\u6f0f\uff1a\n\n\u5806\u5185\u5b58\u6cc4\u6f0f\uff08Heap leak\uff09\u3002\u5bf9\u5185\u5b58\u6307\u7684\u662f\u7a0b\u5e8f\u8fd0\u884c\u4e2d\u6839\u636e\u9700\u8981\u5206\u914d\u901a\u8fc7 malloc,realloc new \u7b49\u4ece\u5806\u4e2d\u5206\u914d\u7684\u4e00\u5757\u5185\u5b58\uff0c\u518d\u662f\u5b8c\u6210\u540e\u5fc5\u987b\u901a\u8fc7\u8c03\u7528\u5bf9\u5e94\u7684 free \u6216\u8005 delete \u5220\u6389\u3002\u5982\u679c\u7a0b\u5e8f\u7684\u8bbe\u8ba1\u7684\u9519\u8bef\u5bfc\u81f4\u8fd9\u90e8\u5206\u5185\u5b58\u6ca1\u6709\u88ab\u91ca\u653e\uff0c\u90a3\u4e48\u6b64\u540e\u8fd9\u5757\u5185\u5b58\u5c06\u4e0d\u4f1a\u88ab\u4f7f\u7528\uff0c\u5c31\u4f1a\u4ea7\u751f Heap Leak.\n\n\u7cfb\u7edf\u8d44\u6e90\u6cc4\u9732\uff08Resource Leak\uff09.\u4e3b\u8981\u6307\u7a0b\u5e8f\u4f7f\u7528\u7cfb\u7edf\u5206\u914d\u7684\u8d44\u6e90\u6bd4\u5982 Bitmap,handle ,SOCKET \u7b49\u6ca1\u6709\u4f7f\u7528\u76f8\u5e94\u7684\u51fd\u6570\u91ca\u653e\u6389\uff0c\u5bfc\u81f4\u7cfb\u7edf\u8d44\u6e90\u7684\u6d6a\u8d39\uff0c\u4e25\u91cd\u53ef\u5bfc\u81f4\u7cfb\u7edf\u6548\u80fd\u964d\u4f4e\uff0c\u7cfb\u7edf\u8fd0\u884c\u4e0d\u7a33\u5b9a\u3002\n\u5185\u5b58\u6cc4\u9732\u6d89\u53ca\u5230\u7684\u76f8\u5173\u95ee\u9898\u8fd8\u6709\u5f88\u591a\uff0c\u8fd9\u91cc\u6682\u4e0d\u5c55\u5f00\u8ba8\u8bba\u3002<\/code><\/pre>\n<p>3\u3001\u4e3a\u4f55\u8981\u6709\u5783\u573e\u56de\u6536\u673a\u5236\uff1f<\/p>\n<p>\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u8bb0\u5f55\u4e00\u4e2a\u8fdb\u7a0b\u8fd0\u884c\u65f6\u7684\u6240\u5360\u7528\u7684\u5185\u5b58\u3001CPU\u548c\u5bc4\u5b58\u5668\u7b49\u8d44\u6e90\uff0c\u53ea\u6709\u5f53\u8fdb\u7a0b\u7ed3\u675f\u540e \uff0c\u64cd\u4f5c\u7cfb\u7edf\u624d\u4f1a\u81ea\u52a8\u56de\u6536\u5176\u6240\u6709\u8d44\u6e90\uff0c\u4f46\u662f\u5bf9\u4e8e\u4e00\u4e2a\u8fd0\u884c\u8f83\u957f\u65f6\u95f4\u7684\u7a0b\u5e8f\uff0c\u64cd\u4f5c\u7cfb\u7edf\u80af\u5b9a\u4e0d\u4f1a\u53c2\u4e0e\u56de\u6536\uff0c\u5982\u679c\u4f7f\u7528\u5b8c\u5185\u5b58\u8d44\u6e90\u540e\u6ca1\u6709\u53ca\u65f6\u91ca\u653e\uff0c\u5c31\u4f1a\u9020\u6210\u5185\u5b58\u6cc4\u6f0f\u751a\u81f3\u7cfb\u7edf\u9519\u8bef\u3002<\/p>\n<p>\u8fd9\u5c31\u8981\u6c42\u6211\u4eec\u5fc5\u987b\u5728\u5fc5\u8981\u65f6\u5bf9\u81ea\u5df1\u7684\u7a0b\u5e8f\u8fdb\u884c\u56de\u6536\u5783\u573e\u7684\u64cd\u4f5c\uff0c\u4f46\u8fd9\u975e\u5e38\u8017\u8d39\u7a0b\u5e8f\u5458\u7684\u7cbe\u529b\uff0c\u6240\u4ee5\u5728go\u3001python\u7b49\u8bed\u8a00\u4e2d\u90fd\u63d0\u4f9b\u4e86\u81ea\u52a8\u7684\u5783\u573e\u56de\u6536\u673a\u5236<\/p>\n<p>\u62d3\u5c55\u9605\u8bfb\uff1a<strong>\u624b\u5783\u573e\u56de\u6536 VS \u81ea\u52a8\u5783\u573e\u56de\u6536<\/strong><\/p>\n<pre><code class=\"language-go\">C\u8bed\u8a00\u8fd9\u79cd\u8f83\u4e3a\u4f20\u7edf\u7684\u8bed\u8a00\u901a\u8fc7malloc\u548cfree\u624b\u52a8\u5411\u64cd\u4f5c\u7cfb\u7edf\u7533\u8bf7\u548c\u91ca\u653e\u5185\u5b58\uff0c\u8fd9\u79cd\u81ea\u7531\u7ba1\u7406\u5185\u5b58\u7684\u65b9\u5f0f\u7ed9\u4e88\u7a0b\u5e8f\u5458\u6781\u5927\u7684\u81ea\u7531\u5ea6\uff0c\u4f46\u662f\u4e5f\u76f8\u5e94\u5730\u63d0\u9ad8\u4e86\u5bf9\u7a0b\u5e8f\u5458\u7684\u8981\u6c42\u3002\n\nC\u8bed\u8a00\u7684\u5185\u5b58\u5206\u914d\u548c\u56de\u6536\u65b9\u5f0f\u4e3b\u8981\u5305\u62ec\u4e09\u79cd\uff1a\n1\u3001\u51fd\u6570\u4f53\u5185\u7684\u5c40\u90e8\u53d8\u91cf\uff1a\u5728\u6808\u4e0a\u521b\u5efa\uff0c\u51fd\u6570\u4f5c\u7528\u57df\u7ed3\u675f\u540e\u81ea\u52a8\u91ca\u653e\u5185\u5b58\n2\u3001\u9759\u6001\u53d8\u91cf\uff1a\u5728\u9759\u6001\u5b58\u50a8\u533a\u57df\u4e0a\u5206\u914d\u5185\u5b58\uff0c\u6574\u4e2a\u7a0b\u5e8f\u8fd0\u884c\u7ed3\u675f\u540e\u91ca\u653e\uff08\u5168\u5c40\u751f\u547d\u5468\u671f\uff09\n3\u3001\u52a8\u6001\u5206\u914d\u5185\u5b58\u7684\u53d8\u91cf\uff1a\u5728\u5806\u4e0a\u5206\u914d\uff0c\u901a\u8fc7malloc\u7533\u8bf7\uff0cfree\u91ca\u653e\n\nC\u3001C++\u548cRust\u7b49\u8f83\u65e9\u7684\u8bed\u8a00\u91c7\u7528\u7684\u662f\u624b\u52a8\u5783\u573e\u56de\u6536\uff0c\u9700\u8981\u7a0b\u5e8f\u5458\u901a\u8fc7\u5411\u64cd\u4f5c\u7cfb\u7edf\u7533\u8bf7\u548c\u91ca\u653e\u5185\u5b58\u6765\u624b\u52a8\u7ba1\u7406\u5185\u5b58\uff0c\u7a0b\u5e8f\u5458\u6781\u5bb9\u6613\u5fd8\u8bb0\u91ca\u653e\u81ea\u5df1\u7533\u8bf7\u7684\u5185\u5b58\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u957f\u671f\u8fd0\u884c\u7684\u7a0b\u5e8f\u5f80\u5f80\u662f\u4e00\u4e2a\u81f4\u547d\u7684\u7f3a\u70b9\u3002\n\nPython\u3001Java\u548cGolang\u7b49\u8f83\u65b0\u7684\u8bed\u8a00\u91c7\u53d6\u7684\u90fd\u662f\u81ea\u52a8\u5783\u573e\u56de\u6536\u65b9\u5f0f\uff0c\u7a0b\u5e8f\u5458\u53ea\u9700\u8981\u8d1f\u8d23\u7533\u8bf7\u5185\u5b58\uff0c\u5783\u573e\u56de\u6536\u5668\u4f1a\u5468\u671f\u6027\u91ca\u653e\u7ed3\u675f\u751f\u547d\u5468\u671f\u7684\u53d8\u91cf\u6240\u5360\u7528\u7684\u5185\u5b58\u7a7a\u95f4\u3002<\/code><\/pre>\n<p>4\u3001\u5185\u5b58\u7ba1\u7406\u6784\u7b80\u56fe\u5982\u4e0b<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gc1.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gc1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u5728\u7a0b\u5e8f\u7684\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u7528\u6237\u7a0b\u5e8f<code>Mutator<\/code>\u901a\u8fc7\u5185\u5b58\u5206\u914d\u5668<code>Allocator<\/code>\u5728\u5806<code>Heap<\/code>\u4e0a\u7533\u8bf7\u5185\u5b58\uff08\u4e5f\u53ef\u80fd\u4f1a\u6539\u53d8\u5bf9\u8c61\u7684\u5f15\u7528\u5173\u7cfb\uff0c\u6216\u8005\u521b\u5efa\u65b0\u7684\u5f15\u7528\uff09\uff0c\u5783\u573e\u56de\u6536\u5668<code>Collector<\/code>\u4f1a\u5b9a\u65f6\u6e05\u7406\u5806\u4e0a\u7684\u5185\u5b58\u3002<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4\u5185\u5b58\u5206\u914d\u5668\u548c\u5783\u573e\u6536\u96c6\u5668\u5171\u540c\u7ba1\u7406\u7740\u7a0b\u5e8f\u4e2d\u7684\u5806\u5185\u5b58\u7a7a\u95f4\uff0c\u672c\u7ae0\u6211\u4eec\u4e3b\u8981\u4ecb\u7ecd\u5783\u573e\u56de\u6536\u5668<\/p>\n<p>\u5783\u573e\u56de\u6536\u5668\u4e3b\u8981\u5305\u62ec\u4e09\u4e2a\u76ee\u6807<\/p>\n<pre><code class=\"language-go\">1\u3001\u65e0\u5185\u5b58\u6cc4\u6f0f\n\u5783\u573e\u56de\u6536\u5668\u6700\u57fa\u672c\u7684\u76ee\u6807\u5c31\u662f\u51cf\u5c11\u9632\u6b62\u7a0b\u5e8f\u5458\u672a\u53ca\u65f6\u91ca\u653e\u5bfc\u81f4\u7684\u5185\u5b58\u6cc4\u6f0f\uff0c\u5783\u573e\u56de\u6536\u5668\u4f1a\u8bc6\u522b\u5e76\u6e05\u7406\u5185\u5b58\u4e2d\u7684\u5783\u573e\n\n2\u3001\u81ea\u52a8\u56de\u6536\u65e0\u7528\u5185\u5b58\n\u5783\u573e\u56de\u6536\u5668\u4f5c\u4e3a\u72ec\u7acb\u7684\u5b50\u4efb\u52a1\uff0c\u4e0d\u9700\u8981\u7a0b\u5e8f\u5458\u663e\u5f0f\u8c03\u7528\u5373\u53ef\u81ea\u52a8\u6e05\u7406\u5185\u5b58\u5783\u573e\n\n3\u3001\u5185\u5b58\u6574\u7406\n\u5982\u679c\u53ea\u662f\u7b80\u5355\u56de\u6536\u65e0\u7528\u5185\u5b58\uff0c\u90a3\u4e48\u5806\u4e0a\u7684\u5185\u5b58\u7a7a\u95f4\u4f1a\u5b58\u5728\u8f83\u591a\u788e\u7247\u800c\u65e0\u6cd5\u6ee1\u8db3\u5206\u914d\u8f83\u5927\u5bf9\u8c61\u7684\u9700\u6c42\uff0c\u56e0\u6b64\u5783\u573e\u56de\u6536\u5668\u9700\u8981\u91cd\u6574\u5185\u5b58\u7a7a\u95f4\uff0c\u63d0\u9ad8\u5185\u5b58\u5229\u7528\u7387<\/code><\/pre>\n<h3>2.2 \u4e3b\u6d41\u5783\u573e\u56de\u6536\u7b97\u6cd5<\/h3>\n<p>\u50a8\u5907\u77e5\u8bc6<\/p>\n<ul>\n<li>\n<p>1\u3001\u6839\u5bf9\u8c61\u662f\u4ec0\u4e48<\/p>\n<p>\u6839\u5bf9\u8c61\u5728\u5783\u573e\u56de\u6536\u7684\u672f\u8bed\u4e2d\u53c8\u53eb\u505a\u6839\u96c6\u5408\uff0c\u5b83\u662f\u5783\u573e\u56de\u6536\u5668\u5728\u6807\u8bb0\u8fc7\u7a0b\u65f6\u6700\u5148\u68c0\u67e5\u7684\u5bf9\u8c61\uff0c\u5305\u62ec<\/p>\n<ul>\n<li>\u5168\u5c40\u53d8\u91cf\uff1a\u7a0b\u5e8f\u5728\u7f16\u8bd1\u671f\u5c31\u80fd\u786e\u5b9a\u7684\u3001\u90a3\u4e9b\u5b58\u5728\u4e8e\u7a0b\u5e8f\u6574\u4e2a\u751f\u547d\u5468\u671f\u7684\u53d8\u91cf\u3002<\/li>\n<li>\u6267\u884c\u6808\/\u8c03\u7528\u51fd\u6570\u4ea7\u751f\u7684\u6808\u5e27\uff1a\u6bcf\u4e2a goroutine \u90fd\u5305\u542b\u81ea\u5df1\u7684\u6267\u884c\u6808\uff0c\u8fd9\u4e9b\u6267\u884c\u6808\u4e0a\u5305\u542b\u6808\u4e0a\u7684\u53d8\u91cf\u53ca\u6307\u5411\u5206\u914d\u7684\u5806\u5185\u5b58\u533a\u5757\u7684\u6307\u9488\u3002<\/li>\n<li>\u5bc4\u5b58\u5668\uff1a\u5bc4\u5b58\u5668\u7684\u503c\u53ef\u80fd\u8868\u793a\u4e00\u4e2a\u6307\u9488\uff0c\u53c2\u4e0e\u8ba1\u7b97\u7684\u8fd9\u4e9b\u6307\u9488\u53ef\u80fd\u6307\u5411\u67d0\u4e9b\u8d4b\u503c\u5668\u5206\u914d\u7684\u5806\u5185\u5b58\u533a\u5757\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>2\u3001STW\u662f\u4ec0\u4e48<\/p>\n<p>STW\u82f1\u6587\u5168\u79f0Stop The World\uff0c\u6307\u7684\u662f\u901a\u8fc7STW\u4fdd\u8bc1GC\u671f\u95f4\u6807\u8bb0\u5bf9\u8c61\u7684\u72b6\u6001\u4e0d\u80fd\u53d8\u5316\uff0c\u5177\u4f53\u5b9e\u73b0\u662f\u6682\u505c\u6574\u4e2a\u7a0b\u5e8f\u8fd0\u884c\uff0c\u7136\u540e\u8fdb\u884c\u5783\u573e\u56de\u6536\uff0c\u5728\u5916\u90e8\u770b\u6765\u7a0b\u5e8f\u5c31\u4f1a\u5361\u987f\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u76ee\u524d\u6bd4\u8f83\u5e38\u89c1\u7684\u5783\u573e\u56de\u6536\u7b97\u6cd5\u6709\u4e24\u79cd\u5f62\u5f0f\u3001\u4e09\u79cd\u7b97\u6cd5\uff1a<\/p>\n<ul>\n<li>\n<p>1\u3001\u5f15\u7528\u8ba1\u6570\uff08\u5f15\u7528\u8ba1\u6570\u5f0fGC\uff09<\/p>\n<ul>\n<li>\uff081\uff09\u539f\u7406\u7b80\u4ecb<\/li>\n<\/ul>\n<p>\u4e3a\u6bcf\u4e2a\u5bf9\u8c61\u7ef4\u62a4\u4e00\u4e2a\u5f15\u7528\u8ba1\u6570\uff0c\u5f53\u5f15\u7528\u8be5\u5bf9\u8c61\u7684\u5bf9\u8c61\u9500\u6bc1\u65f6\uff0c\u5f15\u7528\u8ba1\u6570 -1\uff0c\u5f53\u5bf9\u8c61\u5f15\u7528\u8ba1\u6570\u4e3a 0 \u65f6\u56de\u6536\u8be5\u5bf9\u8c61\uff0c\u5f15\u7528\u8ba1\u6570\u662f\u6e10\u8fdb\u5f0f\u7684\uff0c\u80fd\u591f\u5c06\u5185\u5b58\u7ba1\u7406\u7684\u5f00\u9500\u5206\u5e03\u5230\u6574\u4e2a\u7a0b\u5e8f\u4e4b\u4e2d\u3002<\/p>\n<ul>\n<li>\uff082\uff09\u4ee3\u8868\u8bed\u8a00<\/li>\n<\/ul>\n<p>Python\u3001Objective-C <\/p>\n<ul>\n<li>\uff083\uff09\u4f18\u70b9<\/li>\n<\/ul>\n<p>\u7b97\u6cd5\u6613\u4e8e\u5b9e\u73b0<\/p>\n<p>\u5bf9\u8c61\u56de\u6536\u5feb\uff08\u6e10\u8fdb\u5f0f\u3002\u5185\u5b58\u7ba1\u7406\u4e0e\u7528\u6237\u7a0b\u5e8f\u7684\u6267\u884c\u4ea4\u7ec7\u5728\u4e00\u8d77\uff0c\u5c06 GC \u7684\u4ee3\u4ef7\u5206\u6563\u5230\u6574\u4e2a\u7a0b\u5e8f\u3002\u4e0d\u50cf\u6807\u8bb0-\u6e05\u626b\u7b97\u6cd5\u9700\u8981 STW \uff09\uff0c<\/p>\n<p>\u5185\u5b58\u5355\u5143\u80fd\u591f\u5f88\u5feb\u88ab\u56de\u6536\u3002\u76f8\u6bd4\u4e8e\u5176\u4ed6\u5783\u573e\u56de\u6536\u7b97\u6cd5\uff0c\u5806\u88ab\u8017\u5c3d\u6216\u8005\u8fbe\u5230\u67d0\u4e2a\u9608\u503c\u624d\u4f1a\u8fdb\u884c\u5783\u573e\u56de\u6536\u3002<\/p>\n<ul>\n<li>\uff084\uff09\u7f3a\u70b9<\/li>\n<\/ul>\n<p>\u539f\u59cb\u7684\u5f15\u7528\u8ba1\u6570\u4e0d\u80fd\u5904\u7406\u5faa\u73af\u5f15\u7528\u3002\u5927\u6982\u8fd9\u662f\u88ab\u8bdf\u75c5\u6700\u591a\u7684\u7f3a\u70b9\u4e86\u3002\u4e0d\u8fc7\u9488\u5bf9\u8fd9\u4e2a\u95ee\u9898\uff0c\u4e5f\u9664\u4e86\u5f88\u591a\u89e3\u51b3\u65b9\u6848\uff0c\u6bd4\u5982\u5f3a\u5f15\u7528\u7b49\u3002<\/p>\n<p>\u7ef4\u62a4\u5f15\u7528\u8ba1\u6570\u964d\u4f4e\u8fd0\u884c\u6548\u7387\u3002\u5185\u5b58\u5355\u5143\u7684\u66f4\u65b0\u5220\u9664\u7b49\u90fd\u9700\u8981\u7ef4\u62a4\u76f8\u5173\u7684\u5185\u5b58\u5355\u5143\u7684\u5f15\u7528\u8ba1\u6570\uff0c\u76f8\u6bd4\u4e8e\u4e00\u4e9b\u8ffd\u8e2a\u5f0f\u7684\u5783\u573e\u56de\u6536\u7b97\u6cd5\u5e76\u4e0d\u9700\u8981\u8fd9\u4e9b\u4ee3\u4ef7\u3002<\/p>\n<\/li>\n<li>\n<p>2\u3001\u6807\u8bb0-\u6e05\u9664\uff08\u8ffd\u8e2a\u5f0fGC\uff09<\/p>\n<ul>\n<li>\uff081\uff09\u539f\u7406\u7b80\u4ecb<\/li>\n<\/ul>\n<p>\u6807\u8bb0-\u6e05\u626b\u7b97\u6cd5\u662f\u57fa\u4e8e\u8ffd\u8e2a\u7684\u5783\u573e\u6536\u96c6\u7b97\u6cd5\uff0c\u7b97\u6cd5\u5206\u4e24\u4e2a\u90e8\u5206\uff1a\u6807\u8bb0\uff08mark\uff09\u548c\u6e05\u626b\uff08sweep\uff09<\/p>\n<p>\u6807\u8bb0\u9636\u6bb5\u4ece\u6839\u53d8\u91cf\u51fa\u53d1\u9012\u5f52\u904d\u5386\u6240\u6709\u76f4\u63a5\u6216\u95f4\u63a5\u5f15\u7528\u7684\u5bf9\u8c61\uff0c\u5c06\u88ab\u5f15\u7528\u7684\u5bf9\u8c61\u6253\u4e0a\u6807\u8bb0\uff0c\u4ee3\u8868\u5b58\u6d3b\u3002<\/p>\n<p>\u901a\u4fd7\u5730\u8bb2\u5c31\u662f\uff0c\u53ea\u8981\u6709\u4e00\u6761\u4ece\u6839\u5bf9\u8c61\u51fa\u53d1\u80fd\u591f\u5f15\u7528\u5230\u4f60\u7684\u4e00\u6761\u8def\u5f84\uff0c\u90a3\u4e48\u4f60\u5c31\u4f1a\u88ab\u6807\u8bb0\u4e3a\u5b58\u6d3b\uff0c<\/p>\n<p>\u6807\u8bb0\u9636\u6bb5\u7ed3\u675f\u540e\u4f1a\u5148STW\uff0c\u5373\u6682\u505c\u6574\u4e2a\u7a0b\u5e8f\u7684\u5168\u90e8\u8fd0\u884c\u7ebf\u7a0b\uff0c\u7136\u540e\u5c06\u6ca1\u6709\u88ab\u6807\u8bb0\u7684\u8fdb\u884c\u56de\u6536\u3002<\/p>\n<p>\u6240\u4ee5\u91c7\u7528\u6807\u8bb0\u6e05\u9664\u7b97\u6cd5\uff0c\u5185\u5b58\u5355\u5143\u5e76\u4e0d\u4f1a\u5728\u53d8\u6210\u5783\u573e\u7acb\u523b\u56de\u6536\uff0c\u800c\u662f\u4fdd\u6301\u4e0d\u53ef\u8fbe\u72b6\u6001\uff0c\u76f4\u5230\u5230\u8fbe\u67d0\u4e2a\u9608\u503c\u6216\u8005\u56fa\u5b9a\u65f6\u95f4\u957f\u5ea6\u65f6\uff0c\u7cfb\u7edf\u6267\u884c STW\u6302\u8d77\u7528\u6237\u7a0b\u5e8f\uff0c\u7136\u540e\u518d\u6267\u884c\u5783\u573e\u56de\u6536\u7a0b\u5e8f\u3002<\/p>\n<ul>\n<li>\uff082\uff09\u4ee3\u8868\u8bed\u8a00\uff1a<\/li>\n<\/ul>\n<p>Go\u8bed\u8a00\u7684\u4e09\u8272\u6807\u8bb0\u6cd5\u5c31\u662f\u6807\u8bb0-\u6e05\u9664\u7b97\u6cd5\u7684\u5347\u7ea7\u7248\uff0c\u4e3a\u89e3\u51b3\u4f20\u7edf\u6807\u8bb0\u6e05\u9664\u7684STW\u95ee\u9898\u800c\u751f<\/p>\n<ul>\n<li>\uff083\uff09\u4f18\u70b9<\/li>\n<\/ul>\n<p>\u89e3\u51b3\u4e86\u5f15\u7528\u8ba1\u6570\u7684\u7f3a\u70b9\uff0c\u5982\u5faa\u73af\u5f15\u7528\u95ee\u9898\u3001\u7ef4\u62a4\u6307\u9488\u7684\u5f00\u9500\u3002<\/p>\n<ul>\n<li>\uff084\uff09\u7f3a\u70b9<\/li>\n<\/ul>\n<p>\u9700\u8981 STW\uff0c\u6682\u65f6\u505c\u6389\u7a0b\u5e8f\u8fd0\u884c\uff0c\u6548\u7387\u4e0d\u9ad8\uff0cGO\u8bed\u8a00\u7684\u4e09\u8272\u6807\u8bb0\u5c31\u662f\u4e3a\u4e86\u89e3\u51b3\u8be5\u95ee\u9898\u7684\u3002<\/p>\n<\/li>\n<li>\n<p>3\u3001\u5206\u4ee3\u6536\u96c6\uff08\u8ffd\u8e2a\u5f0fGC\uff09<\/p>\n<p>\u539f\u7406\u7b80\u4ecb\uff1a\u6309\u7167\u5bf9\u8c61\u751f\u547d\u5468\u671f\u957f\u77ed\u5212\u5206\u4e0d\u540c\u7684\u4ee3\u7a7a\u95f4\uff0c\u751f\u547d\u5468\u671f\u957f\u7684\u653e\u5165\u8001\u5e74\u4ee3\uff0c\u77ed\u7684\u653e\u5165\u65b0\u751f\u4ee3\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u53eb\u505a promote\uff0c\u4e0d\u540c\u4ee3\u6709\u4e0d\u540c\u7684\u56de\u6536\u7b97\u6cd5\u548c\u56de\u6536\u9891\u7387\uff0c\u968f\u7740\u4e0d\u65ad promote\uff0c\u6700\u540e\u65b0\u751f\u4ee3\u7684\u5927\u5c0f\u5728\u6574\u4e2a\u5806\u7684\u5360\u7528\u6bd4\u4f8b\u4e0d\u4f1a\u7279\u522b\u5927\u3002\u6536\u96c6\u7684\u65f6\u5019\u96c6\u4e2d\u4e3b\u8981\u7cbe\u529b\u5728\u65b0\u751f\u4ee3\u5c31\u4f1a\u76f8\u5bf9\u6765\u8bf4\u6548\u7387\u66f4\u9ad8\uff0cSTW \u65f6\u95f4\u4e5f\u4f1a\u66f4\u77ed\u3002<\/p>\n<p>\u4ee3\u8868\u8bed\u8a00\uff1aJava<br \/>\n\u4f18\u70b9\uff1a\u56de\u6536\u6027\u80fd\u597d<br \/>\n\u7f3a\u70b9\uff1a\u7b97\u6cd5\u590d\u6742<\/p>\n<\/li>\n<\/ul>\n<h2>\u4e09 GO\u7684GC\u673a\u5236<\/h2>\n<h3>3.1 GO\u8bed\u8a00GC\u7684\u5386\u53f2\u53ca\u6f14\u8fdb<\/h3>\n<p>go\u8bed\u8a00\u5783\u573e\u56de\u6536\u603b\u4f53\u91c7\u7528\u7684\u662f\u7ecf\u5178\u7684\u6807\u8bb0\u6e05\u9664\uff08mark and sweep\uff09\u7b97\u6cd5\uff0cGo\u7684GC\u81ea\u51fa\u751f\u7684\u65f6\u5019\u5c31\u5e7f\u53d7\u8bdf\u75c5\uff0c\u4f46\u5728v1.5\u5f15\u5165\u4e09\u8272\u6807\u8bb0\u548cv1.8\u5f15\u5165\u6df7\u5408\u5199\u5c4f\u969c\u540e\uff0c\u6b63\u5e38\u7684GC\u5df2\u7ecf\u7f29\u77ed\u5230\u4e8610us\u5de6\u53f3\uff0c\u5df2\u7ecf\u975e\u5e38\u4e86\u4e0d\u8d77\u4e86<\/p>\n<p><code>Golang<\/code>\u6bcf\u6b21\u6539\u7248\u51e0\u4e4e\u90fd\u4f34\u968f\u7740\u5783\u573e\u56de\u6536\u673a\u5236\u7684\u6539\u8fdb\uff0c\u5176\u4e2d\u91cc\u7a0b\u7891\u5f0f\u7684\u6539\u52a8\u4e3b\u8981\u5305\u62ec\uff1a<\/p>\n<p>go v1.1\u6807\u8bb0-\u6e05\u9664\u6cd5\uff08mark and sweep\uff09\uff0c\u6574\u4e2a\u8fc7\u7a0b\u90fd\u9700\u8981STW<\/p>\n<p>Go v1.3\u6807\u8bb0-\u6e05\u9664\u6cd5\uff08mark and sweep\uff09\uff0c\u6807\u8bb0\u8fc7\u7a0b\u4ecd\u7136\u9700\u8981<code>STW<\/code>\u4f46\u6e05\u9664\u8fc7\u7a0b\u5e76\u884c\u5316\uff0c<code>gc pause<\/code>\u7ea6\u51e0\u767e<code>ms<\/code><\/p>\n<p>GO v1.5\u4e4b\u540e\u4e09\u8272\u6807\u8bb0\u6cd5\uff08\u662f\u5bf9\u6807\u8bb0-\u6e05\u9664\u7684\u5347\u7ea7\uff0c\u89e3\u51b3STW\u95ee\u9898\u3001\u4e3a\u63d0\u5347\u6548\u7387\u6e10\u8fdb\u5f0f\u56de\u6536\u5960\u5b9a\u4e86\u57fa\u7840\uff09<\/p>\n<p>GO v1.5-v1.7\u4e09\u8272\u6807\u8bb0\u6cd5+\u5f00\u542f\u5199\u5c4f\u969c\uff0c\u4ec5\u5728\u5806\u7a7a\u95f4\u542f\u52a8\u63d2\u5165\u5199\u5c4f\u969c\uff0c\u5168\u90e8\u626b\u63cf\u540e\u9700\u8981<code>STW<\/code>\u91cd\u65b0\u626b\u63cf\u6808\u7a7a\u95f4\uff0c<code>gc pause<\/code>\u8017\u65f6\u964d\u5230<code>10ms<\/code>\u4ee5\u4e0b<\/p>\n<p>Go v1.8\u4e09\u8272\u6807\u8bb0\u6cd5+\u7ed3\u5408\u5199\u5c4f\u969c\u548c\u5220\u9664\u5c4f\u969c\u7684\u6df7\u5408\u5199\u5c4f\u969c\u6cd5\uff0c\u4ec5\u5728\u5806\u7a7a\u95f4\u542f\u52a8\u6df7\u5408\u5199\u5c4f\u969c\uff0c\u4e0d\u9700\u8981\u5728GC\u7ed3\u675f\u540e\u5bf9\u6808\u7a7a\u95f4\u91cd\u65b0\u626b\u63cf\uff0cgc pause\u65f6\u95f4\u964d\u4f4e\u81f30.5ms\u4ee5\u4e0b<\/p>\n<p>go v1.14\uff1a\u5f15\u5165\u65b0\u7684\u9875\u5206\u914d\u5668\u7528\u4e8e\u4f18\u5316\u5185\u5b58\u5206\u914d\u7684\u901f\u5ea6<\/p>\n<p>\u62d3\u5c55\u9605\u8bfb\u6f14\u8fdb\u8be6\u89e3\uff08\u4e0d\u8bfb\u4e5f\u884c\uff09\uff1a<a href=\"https:\/\/www.cnblogs.com\/linhaifeng\/p\/15849233.html\">https:\/\/www.cnblogs.com\/linhaifeng\/p\/15849233.html<\/a><\/p>\n<h3>3.2 \u6807\u8bb0\u6e05\u9664\u7b97\u6cd5<\/h3>\n<p>\u6b64\u7b97\u6cd5\u4e3b\u8981\u6709\u4e24\u4e2a\u4e3b\u8981\u7684\u6b65\u9aa4\uff1a<\/p>\n<ul>\n<li>\n<p>1\u3001\u6807\u8bb0(Mark phase)<\/p>\n<\/li>\n<li>\n<p>2\u3001\u6e05\u9664(Sweep phase)<\/p>\n<\/li>\n<\/ul>\n<p>\u5206\u4e0b\u9762\u56db\u6b65\u8fdb\u884c<\/p>\n<ul>\n<li>1\u3001\u5f00\u542fSTW\uff0c\u5373\u6682\u505c\u7a0b\u5e8f\u4e1a\u52a1\u903b\u8f91\uff0c\u5728STW\u671f\u95f4\uff0c\u7a0b\u5e8f\u65e0\u6cd5\u54cd\u5e94\u8bf7\u6c42<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u6807\u8bb0\u6e05\u96641.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u6807\u8bb0\u6e05\u96641.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<ul>\n<li>2\u3001\u5f00\u59cb\u6807\u8bb0\uff0c\u7a0b\u5e8f\u627e\u51fa\u53ef\u8fbe\u5185\u5b58\u5360\u7528\u5e76\u505a\u6807\u8bb0<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u6807\u8bb0\u6e05\u966422.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u6807\u8bb0\u6e05\u966422.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<ul>\n<li>3\u3001\u6807\u8bb0\u7ed3\u675f\uff0c\u7136\u540e\u5f00\u59cb\u6e05\u9664\u672a\u6807\u8bb0\u7684\u5bf9\u8c61<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u6807\u8bb0\u6e05\u96643.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u6807\u8bb0\u6e05\u96643.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<ul>\n<li>4\u3001\u7ed3\u675fSTW\uff0c\u8ba9\u7a0b\u5e8f\u7ee7\u7eed\u8fd0\u884c\uff0c\u7136\u540e\u5faa\u73af\u8be5\u8fc7\u7a0b\uff0c\u76f4\u5230main\u751f\u547d\u5468\u671f\u7ed3\u675f<\/li>\n<\/ul>\n<p>\u6807\u8bb0-\u6e05\u626b(mark and sweep)\u7684\u7f3a\u70b9<\/p>\n<ul>\n<li>1\u3001STW\uff0cstop the world\uff1b\u8ba9\u7a0b\u5e8f\u6682\u505c\uff0c\u7a0b\u5e8f\u51fa\u73b0\u5361\u987f \uff08\u8fd9\u662f\u5176\u6700\u5927\u7684\u95ee\u9898\uff09<\/li>\n<li>2\u3001\u6807\u8bb0\u9700\u8981\u626b\u63cf\u6574\u4e2aheap<\/li>\n<li>3\u3001\u6e05\u9664\u6570\u636e\u4f1a\u4ea7\u751fheap\u788e\u7247<\/li>\n<\/ul>\n<p>Go V1.3\u7248\u672c\u4e4b\u524d\u7684\u6d41\u7a0b\u662f<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/stw1.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/stw1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>Go V1.3 \u505a\u4e86\u7b80\u5355\u7684\u4f18\u5316,\u5c06STW\u63d0\u524d, \u51cf\u5c11STW\u6682\u505c\u7684\u65f6\u95f4\u8303\u56f4,Sweep\u9636\u6bb5\u4e0d\u518dSTW\uff0c\u53ef\u4ee5\u548c\u7a0b\u5e8f\u5e76\u53d1\u8fd0\u884c\u3002\u5982\u4e0b\u6240\u793a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/stw2.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/stw2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u8fd9\u79cd\u4f18\u5316\u51cf\u5c0f\u4e86STW\u7684\u65f6\u957f\uff1a\u5982\u679c\u8fd0\u884c\u5728\u591a\u6838\u5904\u7406\u5668\u4e0a\uff0cgo\u4f1a\u8bd5\u56fe\u5c06gc\u4efb\u52a1\u653e\u5230\u5355\u72ec\u7684\u6838\u5fc3\u4e0a\u8fd0\u884c\u800c\u5c3d\u91cf\u4e0d\u5f71\u54cd\u4e1a\u52a1\u4ee3\u7801\u7684\u6267\u884c\u3002go team\u81ea\u5df1\u7684\u8bf4\u6cd5\u662f\u51cf\u5c11\u4e8650%-70%\u7684\u6682\u505c\u65f6\u95f4\u3002<\/p>\n<p>\u4f46\u662f\u8fd9\u79cd\u7c92\u5ea6\u7684STW\u5bf9\u4e8e\u6027\u80fd\u8f83\u9ad8\u7684\u7a0b\u5e8f\u8fd8\u662f\u65e0\u6cd5\u63a5\u53d7\uff0cSTW\u4f1a\u6682\u505c\u7528\u6237\u903b\u8f91\u5bf9\u7a0b\u5e8f\u7684\u6027\u80fd\u5f71\u54cd\u4f9d\u7136\u662f\u975e\u5e38\u5927\u7684\uff0c\u56e0\u6b64Go1.5\u91c7\u7528\u4e86\u4e09\u8272\u6807\u8bb0\u6cd5\u4f18\u5316\u4e86STW\u3002<\/p>\n<h3>3.2 \u4e09\u8272\u6807\u8bb0\u7b97\u6cd5<\/h3>\n<h4>3.2.1 \u4e09\u8272\u7684\u542b\u4e49<\/h4>\n<p>\u4e09\u8272\u6807\u8bb0\u7b97\u6cd5\u5c06\u7a0b\u5e8f\u4e2d\u7684\u5bf9\u8c61\u5206\u6210\u767d\u8272\u3001\u9ed1\u8272\u548c\u7070\u8272\u4e09\u7c7b\uff1a<\/p>\n<ul>\n<li>\u767d\u8272\u5bf9\u8c61\uff1a\u6f5c\u5728\u7684\u5783\u573e\uff0c\u5176\u5185\u5b58\u53ef\u80fd\u4f1a\u88ab\u5783\u573e\u6536\u96c6\u5668\u56de\u6536\uff1b<\/li>\n<li>\u9ed1\u8272\u5bf9\u8c61\uff1a\u6d3b\u8dc3\u7684\u5bf9\u8c61\uff0c\u5305\u62ec\u4e0d\u5b58\u5728\u4efb\u4f55\u5f15\u7528\u5916\u90e8\u6307\u9488\u7684\u5bf9\u8c61\u4ee5\u53ca\u4ece\u6839\u5bf9\u8c61\u53ef\u8fbe\u7684\u5bf9\u8c61\uff1b<\/li>\n<li>\u7070\u8272\u5bf9\u8c61\uff1a\u6d3b\u8dc3\u7684\u5bf9\u8c61\uff0c\u5c5e\u4e8e\u9ed1\u8272\u5230\u767d\u8272\u7684\u4e2d\u95f4\u72b6\u6001\uff0c\u56e0\u4e3a\u5b58\u5728\u6307\u5411\u767d\u8272\u5bf9\u8c61\u7684\u5916\u90e8\u6307\u9488\uff0c\u5783\u573e\u6536\u96c6\u5668\u4f1a\u626b\u63cf\u8fd9\u4e9b\u5bf9\u8c61\u7684\u5b50\u5bf9\u8c61\uff1b<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc1.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<h4>3.2.2 \u4e09\u8272\u6807\u8bb0\u6cd5\u5de5\u4f5c\u539f\u7406<\/h4>\n<p><strong>\u4e09\u8272\u6807\u8bb0-\u6e05\u9664\u7b97\u6cd5\u6267\u884c\u5206\u4e3a\u4e24\u4e2a\u9636\u6bb5\u30015\u4e2a\u6b65\u9aa4\uff0c\u5982\u4e0b\u56fe\u6240\u793a<\/strong><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc10.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc10.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<ul>\n<li>\n<p>\u4e00\u3001MARK\u6807\u8bb0\u9636\u6bb5<\/p>\n<ul>\n<li>\n<p>\u6b65\u9aa41\u3001\u521d\u59cb\u72b6\u6001\u5c06\u6240\u6709\u5bf9\u8c61\u90fd\u6807\u8bb0\u4e3a\u767d\u8272\uff0c\u5982ABCDEFGH\uff1b<\/p>\n<\/li>\n<li>\n<p>\u6b65\u9aa42\u3001\u4eceroot\u6839\u51fa\u53d1\u626b\u63cf\u6240\u6709\u5bf9\u8c61\uff0c\u5c06\u88ab\u5b83\u5f15\u7528\u7684\u5bf9\u8c61\u6807\u8bb0\u4e3a\u7070\u8272\uff0c\u5982\u4e0a\u56fe\u4e2d\u7684A\u4e0eF<\/p>\n<\/li>\n<li>\n<p>\u6b65\u9aa43\u3001\u5206\u6790\u4e0a\u4e00\u6b65\u6807\u8bb0\u7684\u6240\u6709\u7070\u8272\u5bf9\u8c61\u662f\u5426\u5f15\u7528\u4e86\u5176\u5b83\u5bf9\u8c61\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u200b             \u5982\u679c\u6ca1\u6709\u5f15\u7528\u5176\u5b83\u5bf9\u8c61\u5219\u5c06\u8be5\u7070\u8272\u5bf9\u8c61\u6807\u8bb0\u4e3a\u9ed1\u8272\uff1b<\/p>\n<p>\u200b             \u5982\u679c\u6709\u5f15\u7528\u5219\u5c06\u5b83\u53d8\u4e3a\u9ed1\u8272\u7684\u540c\u65f6\u5c06\u5b83\u5f15\u7528\u7684\u5bf9\u8c61\u4e5f\u53d8\u4e3a\u7070\u8272\uff0c\u5982\u4e0a\u56fe\u4e2dA\u4e0eB\u53d8\u9ed1\uff0cBCD\u53d8\u7070\u3002<\/p>\n<p>\u6b65\u9aa44\u3001\u91cd\u590d\u6b65\u9aa43\uff0c\u76f4\u5230\u7070\u8272\u5bf9\u8c61\u961f\u5217\u4e3a\u7a7a\u3002\u6b64\u65f6\u767d\u8272\u5bf9\u8c61\u5373\u4e3a\u5783\u573e\u5bf9\u8c61\uff0c\u8fdb\u884c\u56de\u6536<\/p>\n<\/li>\n<li>\n<p>\u4e8c\u3001SWEEP\u6e05\u9664\u9636\u6bb5<\/p>\n<ul>\n<li>\u6b65\u9aa45\uff1a\u5783\u573e\u6536\u96c6\u5668\u53ea\u4f1a\u4ece\u7070\u8272\u5bf9\u8c61\u96c6\u5408\u4e2d\u53d6\u51fa\u5bf9\u8c61\u5f00\u59cb\u626b\u63cf\uff0c\u5f53\u7070\u8272\u96c6\u5408\u4e2d\u4e0d\u5b58\u5728\u4efb\u4f55\u5bf9\u8c61\u65f6\uff0c\u6807\u8bb0\u9636\u6bb5\u5c31\u4f1a\u7ed3\u675f\uff0c\u5806\u5185\u5b58\u4e2d\u53ea\u5269\u4e0b\u9ed1\u8272\u7684\u5b58\u6d3b\u5bf9\u8c61\u4ee5\u53ca\u767d\u8272\u7684\u5783\u573e\u5bf9\u8c61\uff0c\u5783\u573e\u6536\u96c6\u5668\u53ef\u4ee5\u56de\u6536\u8fd9\u4e9b\u767d\u8272\u7684\u5783\u573e<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc2.gif'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc2.gif\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u4e0a\u8ff0\u539f\u7406\u7684\u901a\u4fd7\u89e3\u91ca\u5982\u4e0b\uff1a<\/p>\n<p>\u4e09\u8272\u6807\u8bb0\u7b97\u6cd5\u7684\u539f\u7406\u5c31\u597d\u6bd4\u662f\u5730\u6bef\u5f0f\u641c\u7d22\uff0c\u7b80\u79f0\u201c\u628a\u513f\u5b50\u62fd\u8fc7\u6765\u4f60\u5c31\u8d70\u201d\uff0c\u5168\u90e8\u626b\u5b8c\u540e\uff0c\u6ca1\u6709\u7956\u5b97\u7684\u5b64\u513f\u4eec\u4f1a\u88ab\u56de\u6536\uff0c\u5206\u4ee5\u4e0b\u51e0\u6b65<\/p>\n<p>1\u3001\u6240\u6709\u4eba\u5168\u653e\u5728\u4e00\u8d77\uff0c\u653e\u5728\u4e00\u4e2a\u5927\u5385\u91cc\uff0c\u90fd\u6234\u7740\u767d\u8272\u7684\u5e3d\u5b50\uff0c\u7b49\u7740\u53eb\u53f7<\/p>\n<p>2\u3001\u6839\u5bf9\u8c61\u51fa\u5217\uff0c\u6234\u4e0a\u7070\u8272\u7684\u5e3d\u5b50<\/p>\n<p>3\u3001\u6328\u4e2a\u95ee\u4e00\u904d\u6234\u7070\u5e3d\u5b50\u7684\u5bf9\u8c61\uff0c\u6709\u513f\u5b50\u6ca1\u6709\uff0c\u6ca1\u6709\u7684\u5219\u6234\u4e0a\u9ed1\u8272\u5e3d\u5b50\u6eda\uff0c\u6709\u7684\u5219\u5148\u628a\u4f60\u513f\u5b50\u62c9\u8fc7\u6765\u6234\u4e0a\u7070\u8272\u5e3d\u5b50\u540c\u65f6\u4f60\u81ea\u5df1\u6234\u4e0a\u9ed1\u8272\u5e3d\u5b50\u4f60\u5c31\u53ef\u4ee5\u6eda\u4e86<\/p>\n<p>4\u3001\u91cd\u590d\u6b65\u9aa43\uff0c\u76f4\u5230\u6240\u6709\u6240\u6709\u4eba\u90fd\u6234\u4e0a\u9ed1\u8272\u5e3d\u5b50\u6216\u767d\u8272\u5e3d\u5b50\uff0c\u90a3\u4e9b\u6234\u9ed1\u8272\u5e3d\u5b50\u7684\u90fd\u662f\u6709\u540e\u4ee3\u7684\uff0c\u90a3\u4e9b\u6234\u767d\u8272\u5e3d\u5b50\u7684\u90fd\u662f\u6ca1\u6709\u7956\u5b97\u7684\u5b64\u513f\uff0c\u5c31\u88ab\u56de\u6536\u4e86\u3002<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u6ce2\u7eb9\u4e09\u8272\u6807\u8bb0\u56fe.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u6ce2\u7eb9\u4e09\u8272\u6807\u8bb0\u56fe.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<h4>3.2.3 \u4e09\u8272\u6807\u8bb0\u7b97\u6cd5\u6807\u8bb0\u5783\u573e\u4ea7\u751f\u7684\u95ee\u9898<\/h4>\n<p>\u4e86\u89e3\u5b8c\u4e09\u8272\u6807\u8bb0\u6cd5\u7684\u57fa\u672c\u539f\u7406\u4e4b\u540e\uff0c\u6211\u4eec\u5e76\u6ca1\u6709\u660e\u663e\u5730\u53d1\u73b0\u5b83\u6bd4\u4f20\u7edf\u7684\u6807\u8bb0\u6e05\u9664\u9ad8\u7ea7\u5728\u54ea\u91cc\uff0c\u786e\u5b9e\u5982\u6b64\uff0c\u4e8b\u5b9e\u4e0a\u4e09\u8272\u6807\u8bb0\u6cd5\u53ea\u662f\u4e3a\u5783\u573e\u56de\u6536\u7684\u8fdb\u4e00\u6b65\u4f18\u5316\u6253\u597d\u4e86\u57fa\u7840\uff0c\u9700\u8981\u914d\u5408\u4e00\u4e9b\u5176\u4ed6\u7684\u673a\u5236\u624d\u53ef\u4ee5\u628a\u4e09\u8272\u6807\u8bb0\u7684\u4f18\u52bf\u53d1\u6325\u51fa\u6765\uff0c\u5982\u679c\u53ea\u662f\u5b83\u81ea\u5df1\uff0c\u80af\u5b9a\u662f\u6709\u95ee\u9898\u7684\uff0c\u6bd4\u5982\u4e09\u8272\u6807\u8bb0\u8fc7\u7a0b\u4e0e\u7528\u6237\u7a0b\u5e8f\u5e76\u53d1\u6267\u884c\u7684\u8bdd\uff0c\u90a3\u4e48\u5c31\u6709\u53ef\u80fd\u4f1a\u4ea7\u751f\u95ee\u9898<\/p>\n<ul>\n<li>\u6f0f\u6807<br \/>\n\u539f\u672c\u4e0d\u662f\u5783\u573e\uff0c\u4f46\u662fGC\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7528\u6237\u7ebf\u7a0b\u5c06\u5176\u5f15\u7528\u5173\u7cfb\u4fee\u6539\uff0c\u5bfc\u81f4GC Roots\u4e0d\u53ef\u8fbe\uff0c\u6210\u4e3a\u4e86\u5783\u573e\u3002\u8fd9\u79cd\u60c5\u51b5\u8fd8\u597d\u4e00\u70b9\uff0c\u65e0\u975e\u5c31\u662f\u4ea7\u751f\u4e86\u4e00\u4e9b\u6d6e\u52a8\u5783\u573e\uff0c\u4e0b\u6b21GC\u518d\u6e05\u7406\u5c31\u597d\u4e86\u3002<\/li>\n<li>\u9519\u6807\uff0c\u6216\u79f0\u60ac\u6302\u6307\u9488<br \/>\n\u539f\u672c\u662f\u5783\u573e\uff0c\u4f46\u662fGC\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7528\u6237\u7ebf\u7a0b\u5c06\u5f15\u7528\u91cd\u65b0\u6307\u5411\u4e86\u5b83\uff0c\u8fd9\u65f6\u5982\u679cGC\u4e00\u65e6\u5c06\u5176\u56de\u6536\uff0c\u5c06\u4f1a\u5bfc\u81f4\u7a0b\u5e8f\u8fd0\u884c\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p>=====\u300b\u622a\u56fe\u4fee\u6539\u5c31\u597d<\/p>\n<p>\u6d6e\u52a8\u5783\u573e\u793a\u4f8b<\/p>\n<p>\u4f8b\u5982\uff1a\u63d2\u5165\u5199\u5c4f\u969c\u5728\u4e00\u4e2a\u5783\u573e\u6536\u96c6\u5668\u548c\u7528\u6237\u7a0b\u5e8f\u4ea4\u66ff\u8fd0\u884c\u7684\u573a\u666f\u4e2d\u53ef\u80fd\u4f1a\u51fa\u73b0\u5982\u4e0b\u56fe\u6240\u793a\u7684\u6807\u8bb0\u8fc7\u7a0b<\/p>\n<ul>\n<li>\u5783\u573e\u6536\u96c6\u5668\u5c06\u6839\u5bf9\u8c61\u6307\u5411 A \u5bf9\u8c61\u6807\u8bb0\u6210\u9ed1\u8272\u5e76\u5c06 A \u5bf9\u8c61\u6307\u5411\u7684\u5bf9\u8c61 B \u6807\u8bb0\u6210\u7070\u8272\uff1b<\/li>\n<li>\u7528\u6237\u7a0b\u5e8f\u4fee\u6539 A \u5bf9\u8c61\u7684\u6307\u9488\uff0c\u5c06\u539f\u672c\u6307\u5411 B \u5bf9\u8c61\u7684\u6307\u9488\u6307\u5411 C \u5bf9\u8c61\uff0c\u8fd9\u65f6\u89e6\u53d1\u5199\u5c4f\u969c\u5c06 C \u5bf9\u8c61\u6807\u8bb0\u6210\u7070\u8272\uff1b<\/li>\n<li>\u5783\u573e\u6536\u96c6\u5668\u4f9d\u6b21\u904d\u5386\u7a0b\u5e8f\u4e2d\u7684\u5176\u4ed6\u7070\u8272\u5bf9\u8c61\uff0c\u5c06\u5b83\u4eec\u5206\u522b\u6807\u8bb0\u6210\u9ed1\u8272\uff1b<\/li>\n<\/ul>\n<p>\u4ece\u4e0a\u56fe\u4e2d\u4e0d\u96be\u770b\u51fa\uff0cB\u5bf9\u8c61\u6ca1\u6709\u4efb\u4f55\u4ece\u6839\u5bf9\u8c61\u51fa\u53d1\u5230\u5b83\u7684\u5f15\u7528\uff0c\u5b83\u4e0d\u518d\u5b58\u6d3b\u5e94\u8be5\u88ab\u56de\u6536\uff0c\u4f46\u5b9e\u9645\u4e0a\u5b83\u4f9d\u7136\u4e3a\u7070\u8272\u4e0d\u4f1a\u88ab\u56de\u6536\uff0c\u800c\u5982\u679c\u6211\u4eec\u5728\u7b2c\u4e8c\u548c\u7b2c\u4e09\u6b65\u4e4b\u95f4\u5c06\u6307\u5411 C \u5bf9\u8c61\u7684\u6307\u9488\u6539\u56de\u6307\u5411 B\uff0c\u5783\u573e\u6536\u96c6\u5668\u4ecd\u7136\u8ba4\u4e3a C \u5bf9\u8c61\u662f\u5b58\u6d3b\u7684\uff0c\u8fd9\u4e9b\u88ab\u9519\u8bef\u6807\u8bb0\u7684\u5783\u573e\u5bf9\u8c61\u53ea\u6709\u5728\u4e0b\u4e00\u4e2a\u5faa\u73af\u624d\u4f1a\u88ab\u56de\u6536\u3002<\/p>\n<p>\u6240\u4ee5\u8bf4\uff0cDijkstra \u7684\u63d2\u5165\u5199\u5c4f\u969c\u662f\u4e00\u79cd\u76f8\u5bf9\u4fdd\u5b88\u7684\u3001\u7b80\u5355\u7c97\u66b4\u7684\u5c4f\u969c\u6280\u672f\uff0c\u5b83\u4f1a\u5c06<strong>\u6709\u5b58\u6d3b\u53ef\u80fd\u7684\u5bf9\u8c61\u90fd\u6807\u8bb0\u6210\u7070\u8272<\/strong>\u4ee5\u6ee1\u8db3\u5f3a\u4e09\u8272\u4e0d\u53d8\u6027<\/p>\n<p>\u60ac\u6302\u6307\u9488\u793a\u4f8b<\/p>\n<ul>\n<li>\n<p>1\u3001\u6240\u6709\u7070\u8272\u5bf9\u8c61\u5168\u88ab\u626b\u63cf\u5b8c\u6bd5\u7684\u540c\u65f6\uff0c\u5e76\u884c\u7684\u7528\u6237\u7a0b\u5e8f\u65b0\u589e\u4e86\u9ed1\u8272\u5bf9\u8c61\u5230\u767d\u8272\u5bf9\u8c61\u7684\u5f15\u7528<\/p>\n<pre><code class=\"language-go\">\u8be6\u89e3\u5982\u4e0b\uff1a\n\u5728\u6807\u8bb0\u9636\u6bb5\uff0c\u5373\u5728MARK\u6807\u8bb0\u6267\u884c\u7684\u8fc7\u7a0b\u4e2d\uff0c\u5e76\u884c\u7684\u7528\u6237\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u4fee\u6539\u5bf9\u8c61\u7684\u6307\u9488\uff0c\n\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u5728\u4e09\u8272\u6807\u8bb0\u8fc7\u7a0b\u4e2d\uff0c\u51c6\u786e\u7684\u8bf4\u662f\u521a\u521a\u626b\u63cf\u5b8c\u6bd5\u6240\u6709\u7684\u7070\u8272\u5bf9\u8c61\uff0c\u5373\u6807\u8bb0\u9636\u6bb5\u521a\u521a\u5b8c\u6210\uff0c\u6b63\u8981\u51c6\u5907\u56de\u6536\u767d\u8272\u5bf9\u8c61\u7684\u540c\u65f6\uff0c\u7528\u6237\u7a0b\u5e8f\u5efa\u7acb\u4e86\u4ece\u9ed1\u8272\u5bf9\u8c61 A \u5bf9\u8c61\u5230 \u767d\u8272\u5bf9\u8c61D \u7684\u5f15\u7528\uff0c\u4f46\u6b64\u65f6\u56e0\u4e3a\u7a0b\u5e8f\u4e2d\u5df2\u7ecf\u4e0d\u5b58\u5728\u7070\u8272\u5bf9\u8c61\u4e86\uff0c\u4e5f\u5c31\u8bf4\u6807\u8bb0\u9636\u6bb5\u5df2\u7ecf\u7ed3\u675f\u4e86\uff0c\u6240\u4ee5\u5bf9\u8c61D\u867d\u7136\u88ab\u6839\u5bf9\u8c61A\u5f15\u7528\u7740\uff0c\u4f46\u5b83\u4f9d\u7136\u662f\u767d\u8272\u7684\uff0c\u6240\u4ee5\u5728\u63a5\u4e0b\u6765\u7684\u6e05\u9664\u9636\u6bb5 D \u5bf9\u8c61\u4f1a\u88ab\u5783\u573e\u6536\u96c6\u5668\u9519\u8bef\u5730\u56de\u6536\u3002<\/code><\/pre>\n<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc5.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<ul>\n<li>2\u3001\u7070\u8272\u5bf9\u8c61\u5f15\u7528\u7740\u767d\u8272\u5bf9\u8c61\uff08\u5982\u4e0b\u56fe\u5bf9\u8c612\u5f15\u7528\u5bf9\u8c613\uff09\uff0c\u5728\u5c06\u8981\u628a\u7070\u53d8\u9ed1\u3001\u767d\u53d8\u7070\u7684\u65f6\u5019\uff0c\u7528\u6237\u7a0b\u5e8f\u89e3\u9664\u7070\u8272\u5bf9\u8c61\u5230\u767d\u8272\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u7136\u540e\u5c06\u4e00\u4e2a\u9ed1\u8272\u5bf9\u8c61\u6307\u5411\u4e86\u8be5\u767d\u8272\u5bf9\u8c61\uff0c\u5982\u4e0b\u56fe\u89e3\u91ca<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u4e09\u8272\u6807\u8bb0\u7684\u95ee\u98981.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u4e09\u8272\u6807\u8bb0\u7684\u95ee\u98981.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u4e09\u8272\u6807\u8bb0\u95ee\u9898\u63d02.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u4e09\u8272\u6807\u8bb0\u95ee\u9898\u63d02.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u4e09\u8272\u6807\u8bb0\u95ee\u98983.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u4e09\u8272\u6807\u8bb0\u95ee\u98983.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u4e09\u8272\u6807\u8bb0\u95ee\u98984.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u4e09\u8272\u6807\u8bb0\u95ee\u98984.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u4e0a\u8ff0\u4e24\u79cd\u60c5\u51b5\u4e0b\uff0c\u5747\u4f1a\u5f15\u53d1\u672c\u6765\u4e0d\u5e94\u8be5\u88ab\u56de\u6536\u7684\u5bf9\u8c61\u5374\u88ab\u56de\u6536\uff0c\u8fd9\u5728\u5185\u5b58\u7ba1\u7406\u4e2d\u662f\u975e\u5e38\u4e25\u91cd\u7684\u9519\u8bef\uff0c\u6211\u4eec\u5c06\u8fd9\u79cd\u9519\u8bef\u79f0\u4e3a\u60ac\u6302\u6307\u9488\uff0c\u5373\u6307\u9488\u6ca1\u6709\u6307\u5411\u7279\u5b9a\u7c7b\u578b\u7684\u5408\u6cd5\u5bf9\u8c61\uff0c\u5f71\u54cd\u4e86\u5185\u5b58\u7684\u5b89\u5168\u6027\u3002<\/p>\n<p>\u5206\u6790\u4e09\u8272\u6807\u8bb0bug\u7684\u6839\u6e90\u6240\u5728\uff0c\u4e3b\u8981\u662f\u56e0\u4e3a\u7a0b\u5e8f\u5728\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u4e86\u4e0b\u9762\u4fe9\u79cd\u60c5\u51b5<\/p>\n<ul>\n<li>1\u3001\u4e00\u4e2a\u767d\u8272\u5bf9\u8c61\u88ab\u9ed1\u8272\u5bf9\u8c61\u5f15\u7528<\/li>\n<li>2\u3001\u7070\u8272\u5bf9\u8c61\u4e0e\u5b83\u4e4b\u95f4\u7684\u53ef\u8fbe\u5173\u7cfb\u7684\u767d\u8272\u5bf9\u8c61\u906d\u5230\u7834\u574f<strong>(\u7070\u8272\u540c\u65f6\u4e22\u4e86\u8be5\u767d\u8272)<\/strong><\/li>\n<\/ul>\n<p>\u4e3a\u4e86\u9632\u6b62\u8fd9\u79cd\u73b0\u8c61\u7684\u53d1\u751f\uff0c\u6700\u7b80\u5355\u7684\u65b9\u5f0f\u5c31\u662fSTW\uff0c\u76f4\u63a5\u7981\u6b62\u6389\u5176\u4ed6\u7528\u6237\u7a0b\u5e8f\u5bf9\u5bf9\u8c61\u5f15\u7528\u5173\u7cfb\u7684\u5e72\u6270\uff0c\u4f46\u662f<strong>STW\u7684\u8fc7\u7a0b\u6709\u660e\u663e\u7684\u8d44\u6e90\u6d6a\u8d39\uff0c\u5bf9\u6240\u6709\u7684\u7528\u6237\u7a0b\u5e8f\u90fd\u6709\u5f88\u5927\u5f71\u54cd<\/strong>\uff0c\u5982\u4f55\u80fd\u5728\u4fdd\u8bc1\u5bf9\u8c61\u4e0d\u4e22\u5931\u7684\u60c5\u51b5\u4e0b\u5408\u7406\u7684\u5c3d\u53ef\u80fd\u7684\u63d0\u9ad8GC\u6548\u7387\uff0c\u51cf\u5c11STW\u65f6\u95f4\u5462\uff1f<\/p>\n<p>\u7b54\u6848\u5c31\u662f, \u90a3\u4e48\u6211\u4eec\u53ea\u8981\u4f7f\u7528\u4e00\u4e2a\u673a\u5236,\u6765\u7834\u574f\u4e0a\u9762\u7684\u4e24\u4e2a\u6761\u4ef6\u5c31\u53ef\u4ee5\u4e86\uff0c\u4e8e\u662f\u8bde\u751f\u4e86\u5c4f\u969c\u6280\u672f\uff0c\u4f7f\u5f97\u8d4b\u503c\u5668\u5728\u8fdb\u884c\u6307\u9488\u5199\u64cd\u4f5c\u65f6\uff0c\u540c\u6b65\u5783\u573e\u56de\u6536\u5668\uff0c\u8be6\u89c1\u4e0b\u4e00\u5c0f\u8282<\/p>\n<p>======\u300b<\/p>\n<p>\u7efc\u4e0a\uff0c\u6f0f\u6807\u95ee\u9898\uff0c\u5e76\u4e0d\u81f4\u547d\uff0c\u4e0b\u4e00\u6b21\u56de\u6536\u5373\u53ef\uff0c\u771f\u6b63\u81f4\u547d\u7684\u662f\u9519\u6807\u60ac\u6302\u6307\u9488\u95ee\u9898\uff0c\u5982\u4f55\u89e3\u51b3\u5462\u3002\u3002\u3002\u3002\u3002\u3002\u3002\u3002\u3002<\/p>\n<h4>3.2.4 \u5c4f\u969c\u673a\u5236<\/h4>\n<h5>\uff081\uff09\u4ec0\u4e48\u662f\u4e09\u8272\u4e0d\u53d8\u6027<\/h5>\n<p>\u60f3\u8981\u5728\u5e76\u53d1\u6216\u8005\u589e\u91cf\u7684\u6807\u8bb0\u7b97\u6cd5\u4e2d\u4fdd\u8bc1\u6b63\u786e\u6027\uff0c\u6211\u4eec\u9700\u8981\u8fbe\u6210\u4ee5\u4e0b\u4e24\u79cd\u4e09\u8272\u4e0d\u53d8\u6027\uff08Tri-color invariant\uff09\u4e2d\u7684\u4efb\u610f\u4e00\u79cd\u5c31\u53ef\u4ee5\u4e86\uff1a<\/p>\n<ul>\n<li>\u5f3a\u4e09\u8272\u4e0d\u53d8\u6027\uff1a\u4e0d\u5141\u8bb8\u9ed1\u8272\u5bf9\u8c61\u5f15\u7528\u767d\u8272\u5bf9\u8c61\uff0c\u5373\u9ed1\u8272\u5bf9\u8c61\u53ea\u80fd\u6307\u5411\u7070\u8272\u5bf9\u8c61\u6216\u8005\u9ed1\u8272\u5bf9\u8c61\uff1b<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5f3a\u4e09\u8272\u4e0d\u53d8\u6027.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5f3a\u4e09\u8272\u4e0d\u53d8\u6027.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<ul>\n<li>\u5f31\u4e09\u8272\u4e0d\u53d8\u6027\uff1a\u9ed1\u8272\u5bf9\u8c61\u53ef\u4ee5\u5f15\u7528\u767d\u8272\uff0c\u4f46\u767d\u8272\u5bf9\u8c61\u4e00\u5b9a\u8981\u5b58\u5728\u5176\u4ed6\u7070\u8272\u5bf9\u8c61\u5bf9\u4ed6\u7684\u5f15\u7528\uff0c\u6216\u8005\u8bf4\u5bf9\u8be5\u767d\u8272\u5bf9\u8c61\u5f15\u7528\u7684\u94fe\u8def\u4e0a\u5b58\u5728\u7070\u8272\u5bf9\u8c61\u3002\u5373\u6240\u6709\u88ab\u9ed1\u8272\u5bf9\u8c61\u5f15\u7528\u7684\u767d\u8272\u5bf9\u8c61\u90fd\u5904\u4e8e\u7070\u8272\u4fdd\u62a4\u72b6\u6001.<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u82e5\u4e09\u8272\u4e0d\u53d8\u6027.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u82e5\u4e09\u8272\u4e0d\u53d8\u6027.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5f31\u4e09\u8272\u4e0d\u53d8\u5f0f.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5f31\u4e09\u8272\u4e0d\u53d8\u5f0f.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u4e3a\u4e86\u5b9e\u73b0\u5f3a\/\u5f31\u4e09\u8272\u4e0d\u53d8\u6027\uff0c\u8bde\u751f\u4e86\u5c4f\u969c\u673a\u5236<\/p>\n<pre><code class=\"language-go\">\u8865\u5145\u8bf4\u660e\uff1a\n\u5185\u5b58\u5c4f\u969c\u6280\u672f\u89e3\u51b3\u7684\u662f\u4e09\u8272\u6807\u8bb0\u6cd5\u7684STW\u7f3a\u70b9\uff0c\u5e76\u4e0d\u662f\u6d88\u9664\u4e86\u6240\u6709\u7684\u8d4b\u503c\u5668\u6302\u8d77\u95ee\u9898\u3002\n\u9700\u8981\u5206\u6e05\u695aSTW\u65b9\u6cd5\u662f\u5168\u5c40\u6027\u7684\u8d4b\u503c\u5668\u6302\u8d77\uff0c\u800c\u5185\u5b58\u5c4f\u969c\u6280\u672f\u662f\u5c40\u90e8\u7684\u8d4b\u503c\u5668\u6302\u8d77\u3002<\/code><\/pre>\n<h5>\uff082\uff09\u5c4f\u969c\u6280\u672f\u4ecb\u7ecd<\/h5>\n<p>\u5185\u5b58\u5c4f\u969c\u6280\u672f\uff0c\u987e\u540d\u601d\u4e49\u5c31\u662f\u5728\u67d0\u4e2a\u4e8b\u7269\u524d\u8bbe\u7f6e\u7684\u5c4f\u969c\u6216\u8005\u5173\u5361\uff0c\u60f3\u8981\u6267\u884c\u5177\u4f53\u7684\u4e8b\u7269\uff0c\u5fc5\u987b\u5148\u8d70\u5c4f\u969c\uff0c\u5b83\u5c31\u50cf\u662f\u4e00\u4e2ahook\u94a9\u5b50\u65b9\u6cd5\uff1a\u5373\u5728\u7a0b\u5e8f\u7684\u6267\u884c\u8fc7\u7a0b\u4e2d\u52a0\u4e00\u4e2a\u5224\u65ad\u673a\u5236\uff0c\u6ee1\u8db3\u5224\u65ad\u673a\u5236\u5219\u89e6\u53d1\u6267\u884c\u56de\u8c03\u51fd\u6570\u3002<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5c4f\u969c\u6280\u672f.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5c4f\u969c\u6280\u672f.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<pre><code class=\"language-go\">\u62d3\u5c55\uff1a\n\u76ee\u524d\u591a\u6570\u7684\u73b0\u4ee3\u5904\u7406\u5668\u90fd\u4f1a\u4e71\u5e8f\u6267\u884c\u6307\u4ee4\u4ee5\u6700\u5927\u5316\u6027\u80fd\uff0c\u4f46\u662f\u5185\u5b58\u5c4f\u969c\u6280\u672f\u8ba9 CPU \u6216\u8005\u7f16\u8bd1\u5668\u5728\u6267\u884c\u5185\u5b58\u76f8\u5173\u64cd\u4f5c\u65f6\u9075\u5faa\u7279\u5b9a\u7684\u7ea6\u675f\uff0c\u4ee5\u80fd\u591f\u4fdd\u8bc1\u5185\u5b58\u64cd\u4f5c\u7684\u987a\u5e8f\u6027\uff1a\u5728\u5185\u5b58\u5c4f\u969c\u524d\u6267\u884c\u7684\u64cd\u4f5c\u4e00\u5b9a\u4f1a\u5148\u4e8e\u5185\u5b58\u5c4f\u969c\u540e\u6267\u884c\u7684\u64cd\u4f5c<\/code><\/pre>\n<h5>\uff083\uff09\u5c4f\u969c\u6280\u672f\u5206\u7c7b<\/h5>\n<p>\u6839\u636e\u64cd\u4f5c\u7c7b\u578b\u7684\u4e0d\u540c\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u5b83\u4eec\u5206\u6210\u4e24\u79cd<\/p>\n<ul>\n<li>\n<p>1\u3001\u8bfb\u5c4f\u969c\uff08Read barrier\uff09<\/p>\n<\/li>\n<li>\n<p>2\u3001\u5199\u5c4f\u969c\uff08Write barrier\uff09<\/p>\n<\/li>\n<\/ul>\n<p>\u56e0\u4e3a\u8bfb\u5c4f\u969c\u9700\u8981\u5728\u8bfb\u64cd\u4f5c\u4e2d\u52a0\u5165\u4ee3\u7801\u7247\u6bb5\uff0c\u5bf9\u7528\u6237\u7a0b\u5e8f\u7684\u6027\u80fd\u5f71\u54cd\u5f88\u5927\uff0c\u6240\u4ee5\u7f16\u7a0b\u8bed\u8a00\u5f80\u5f80\u90fd\u4f1a\u91c7\u7528\u5199\u5c4f\u969c\u4fdd\u8bc1\u4e09\u8272\u4e0d\u53d8\u6027\uff0c\u800c\u5199\u5c4f\u969c\u6280\u672f\u4e3b\u8981\u6709\u4e24\u79cd<\/p>\n<ul>\n<li>1\u3001\u63d2\u5165\u5199\u5c4f\u969c\uff0c\u5b9e\u73b0\u7684\u662f\u5f3a\u4e09\u8272\u4e0d\u53d8\u5f0f<\/li>\n<li>2\u3001\u5220\u9664\u5199\u5c4f\u969c\u6280\u672f\uff0c\u5b9e\u73b0\u7684\u5219\u662f\u5f31\u4e09\u8272\u4e0d\u53d8\u5f0f<\/li>\n<\/ul>\n<p>\u5f3a\u8c03\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u70b9\uff1a<\/p>\n<p>\u987b\u77e5\u9ed1\u8272\u5bf9\u8c61\u7684\u5185\u5b58\u69fd\u6709\u4e24\u79cd\u4f4d\u7f6e, <code>\u6808<\/code>\u548c<code>\u5806<\/code>. \u6808\u7a7a\u95f4\u7684\u7279\u70b9\u662f\u5bb9\u91cf\u5c0f,\u4f46\u662f\u8981\u6c42\u76f8\u5e94\u901f\u5ea6\u5feb,\u56e0\u4e3a\u51fd\u6570\u8c03\u7528\u5f39\u51fa\u9891\u7e41\u4f7f\u7528\uff0c\u6240\u4ee5\u4e3a\u4e86\u4fdd\u8bc1\u6808\u7684\u8fd0\u884c\u6548\u7387\uff0c\u5728\u6808\u4e0a\uff0c\u5bc4\u5b58\u5668\u5bf9\u8c61\u7684\u8d4b\u503c\uff08\u63d2\u5165\uff0c\u5220\u9664\uff09\u4e0d\u80fd hook \uff0c\u5c4f\u969c\u53ea\u5bf9\u5806\u4e0a\u7684\u5185\u5b58\u5bf9\u8c61\u542f\u7528\uff0c\u81f3\u4e8e\u6808\u4e0a\u7684\u5185\u5b58\u56de\u6536\uff0c\u4f1a\u5728GC\u7ed3\u675f\u540e\u542f\u7528STW\u91cd\u65b0\u626b\u63cf\u3002<\/p>\n<h5>\uff083\uff09\u63d2\u5165\u5199\u5c4f\u969c<\/h5>\n<p>Dijkstra \u5728 1978 \u5e74\u63d0\u51fa\u4e86\u63d2\u5165\u5199\u5c4f\u969c\u3002<\/p>\n<p>Go1.5\u7248\u672c\u4f7f\u7528\u7684Dijkstra\u5199\u5c4f\u969c\u5c31\u662f\u8fd9\u4e2a\u539f\u7406\uff0c\u4f2a\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-go\">\u6dfb\u52a0\u4e0b\u6e38\u5bf9\u8c61(\u5f53\u524d\u4e0b\u6e38\u5bf9\u8c61slot, \u65b0\u4e0b\u6e38\u5bf9\u8c61ptr) {   \n  \/\/1\n  \u6807\u8bb0\u7070\u8272(\u65b0\u4e0b\u6e38\u5bf9\u8c61ptr)   \n\n  \/\/2\n  \u5f53\u524d\u4e0b\u6e38\u5bf9\u8c61slot = \u65b0\u4e0b\u6e38\u5bf9\u8c61ptr                   \n}<\/code><\/pre>\n<p>\u6d41\u7a0b\uff1a\u5728A\u5bf9\u8c61\u5f15\u7528B\u5bf9\u8c61\u7684\u65f6\u5019\uff0cB\u5bf9\u8c61\u88ab\u6807\u8bb0\u4e3a\u7070\u8272\u3002<\/p>\n<ol>\n<li>\u63d2\u5165\u5199\u5c4f\u969c\u4f1a\u5728\u767d\u8272\u5bf9\u8c61\u88ab\u9ed1\u8272\u5bf9\u8c61\u5f15\u7528\u65f6\u89e6\u53d1\uff0c\u5c06\u767d\u8272\u5bf9\u8c61\u88ab\u6807\u8bb0\u4e3a\u7070\u8272\uff0c\u8fd9\u6837\u5c31\u4e0d\u5b58\u5728\u9ed1\u8272\u5bf9\u8c61\u5f15\u7528\u767d\u8272\u5bf9\u8c61\u7684\u60c5\u51b5\u4e86\uff0c\u4ece\u800c\u5b9e\u73b0\u5f3a\u4e09\u8272\u4e0d\u53d8\u6027\uff08\u6c38\u8fdc\u4e0d\u4f1a\u51fa\u73b0\u9ed1\u8272\u5bf9\u8c61\u6307\u5411\u767d\u8272\u5bf9\u8c61\uff09\uff0c\u793a\u4f8b\u5982\u4e0b<\/li>\n<\/ol>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5fae\u4fe1\u56fe\u7247_20230128141646.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5fae\u4fe1\u56fe\u7247_20230128141646.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<ul>\n<li>2\u3001\u4f46\u662f\u7531\u4e8e<strong>\u6808\u4e0a\u5bf9\u8c61\u65e0\u5199\u5c4f\u969c\uff08\u4e0d hook\uff09<\/strong>\uff0c\u5982\u679c\u5728gc\u626b\u63cf\u5b8c\u6240\u6709\u7070\u8272\u5bf9\u8c61\u3001\u51c6\u5907\u5f00\u59cb\u56de\u6536\u6240\u6709\u767d\u8272\u5bf9\u8c61\u7684\u540c\u65f6\uff0c\u5728\u6808\u4e0a\u65b0\u521b\u5efa\u4e86\u4e00\u4e2a\u5bf9\u8c61\uff0c\u7531\u4e8e\u6808\u4e0a\u5bf9\u8c61\u6ca1\u6709\u5199\u5c4f\u969c\uff0c\u6240\u4ee5\u65b0\u5efa\u7684\u5bf9\u8c61\u4ecd\u4e3a\u767d\u8272\u8282\u70b9\uff0c\u4f1a\u88ab\u56de\u6536\uff0c\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u5728GC\u8fed\u4ee3\u7ed3\u675f\u65f6\uff08\u6240\u6709\u7070\u8272\u8282\u70b9\u90fd\u626b\u63cf\u5b8c\u6bd5\uff09\uff0c\u5fc5\u987bSTW\u91cd\u65b0\u626b\u63cf\u6808\u3002\u8fd9\u671f\u95f4\u4f1a\u5c06\u6240\u6709goroutine\u6302\u8d77\uff0c goroutine \u91cf\u5927\u4e14\u6d3b\u8dc3\u7684\u573a\u666f\uff0c\u5ef6\u8fdf\u4e0d\u53ef\u63a7\uff0c\u7ecf\u9a8c\u503c\u5e73\u5747 10-100ms\uff0c\u5982\u4e0b\u56fe\u6240\u793a<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5fae\u4fe1\u56fe\u7247_20230128141921.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5fae\u4fe1\u56fe\u7247_20230128141921.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u63d2\u5165\u5c4f\u969c\u7ec6\u6d412.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u63d2\u5165\u5c4f\u969c\u7ec6\u6d412.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u63d2\u5165\u5c4f\u969c\u7ec6\u6d413.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u63d2\u5165\u5c4f\u969c\u7ec6\u6d413.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u4f46\u662f\u5982\u679c\u6808\u4e0d\u6dfb\u52a0,\u5f53\u5168\u90e8\u4e09\u8272\u6807\u8bb0\u626b\u63cf\u4e4b\u540e,\u6808\u4e0a\u6709\u53ef\u80fd\u4f9d\u7136\u5b58\u5728\u767d\u8272\u5bf9\u8c61\u88ab\u5f15\u7528\u7684\u60c5\u51b5(\u5982\u4e0a\u56fe\u7684\u5bf9\u8c619). \u6240\u4ee5\u8981\u5bf9\u6808\u91cd\u65b0\u8fdb\u884c\u4e09\u8272\u6807\u8bb0\u626b\u63cf, \u4f46\u8fd9\u6b21\u4e3a\u4e86\u5bf9\u8c61\u4e0d\u4e22\u5931, \u8981\u5bf9\u672c\u6b21\u6807\u8bb0\u626b\u63cf\u542f\u52a8STW\u6682\u505c. \u76f4\u5230\u6808\u7a7a\u95f4\u7684\u4e09\u8272\u6807\u8bb0\u7ed3\u675f.<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u63d2\u5165\u5c4f\u969c\u7ec6\u6d414.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u63d2\u5165\u5c4f\u969c\u7ec6\u6d414.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u63d2\u5165\u5c4f\u969c\u7ec6\u6d415.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u63d2\u5165\u5c4f\u969c\u7ec6\u6d415.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u6700\u540e\u5c06\u6808\u548c\u5806\u7a7a\u95f4 \u626b\u63cf\u5269\u4f59\u7684\u5168\u90e8 \u767d\u8272\u8282\u70b9\u6e05\u9664. \u8fd9\u6b21STW\u5927\u7ea6\u7684\u65f6\u95f4\u572810~100ms\u95f4.<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u63d2\u5165\u5c4f\u969c\u7ec6\u6d416.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u63d2\u5165\u5c4f\u969c\u7ec6\u6d416.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<h5>\uff084\uff09\u5220\u9664\u5199\u5c4f\u969c<\/h5>\n<p>Yuasa \u5728 1990 \u5e74\u63d0\u51fa\u4e86\u5220\u9664\u5199\u5c4f\u969c\uff0c<\/p>\n<p>\u4f2a\u4ee3\u7801\u5982\u4e0b<\/p>\n<pre><code class=\"language-go\">\u6dfb\u52a0\u4e0b\u6e38\u5bf9\u8c61(\u5f53\u524d\u4e0b\u6e38\u5bf9\u8c61slot\uff0c \u65b0\u4e0b\u6e38\u5bf9\u8c61ptr) {\n  \/\/1\n  if (\u5f53\u524d\u4e0b\u6e38\u5bf9\u8c61slot\u662f\u7070\u8272 || \u5f53\u524d\u4e0b\u6e38\u5bf9\u8c61slot\u662f\u767d\u8272) {\n        \u6807\u8bb0\u7070\u8272(\u5f53\u524d\u4e0b\u6e38\u5bf9\u8c61slot)     \/\/slot\u4e3a\u88ab\u5220\u9664\u5bf9\u8c61\uff0c \u6807\u8bb0\u4e3a\u7070\u8272\n  }\n\n  \/\/2\n  \u5f53\u524d\u4e0b\u6e38\u5bf9\u8c61slot = \u65b0\u4e0b\u6e38\u5bf9\u8c61ptr\n}<\/code><\/pre>\n<p>\u5bf9\u8c61\u88ab\u5220\u9664\u65f6\u89e6\u53d1\uff0c\u5982\u679c\u81ea\u8eab\u4e3a\u7070\u8272\u6216\u8005\u767d\u8272\uff0c\u90a3\u4e48\u5b83\u4f1a\u88ab\u6807\u8bb0\u4e3a\u7070\u8272\uff0c\u5b9e\u73b0\u7684\u662f\u5f31\u4e09\u8272\u4e0d\u53d8\u6027 (\u4fdd\u62a4\u7070\u8272\u5bf9\u8c61\u5230\u767d\u8272\u5bf9\u8c61\u7684\u8def\u5f84\u4e0d\u4f1a\u65ad\uff0c\u8001\u5bf9\u8c61\u5f15\u7528\u7684\u4e0b\u6e38\u5bf9\u8c61\u4e00\u5b9a\u53ef\u4ee5\u88ab\u7070\u8272\u5bf9\u8c61\u5f15\u7528)<\/p>\n<p>\u5220\u9664\u5199\u5c4f\u969c\u4e5f\u53eb\u57fa\u4e8e\u5feb\u7167\u7684\u5199\u5c4f\u969c\u65b9\u6848\uff0c\u5fc5\u987b\u5728\u8d77\u59cb\u65f6\uff0cSTW \u626b\u63cf\u6574\u4e2a\u6808\uff08\u6ce8\u610f\u4e86\uff0c\u662f\u6240\u6709\u7684 goroutine \u6808\uff09\uff0c\u4fdd\u8bc1<strong>\u6240\u6709\u5806\u4e0a\u5728\u7528\u7684\u5bf9\u8c61<\/strong>\u90fd\u5904\u4e8e\u7070\u8272\u4fdd\u62a4\u4e0b\u3002<\/p>\n<p>\u793a\u4f8b\u5982\u4e0b<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc9.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc9.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u4e0a\u56fe\u56db\u6b65\u89e3\u91ca<\/p>\n<ol>\n<li>\u5783\u573e\u6536\u96c6\u5668\u5c06\u6839\u5bf9\u8c61\u6307\u5411 A \u5bf9\u8c61\u6807\u8bb0\u6210\u9ed1\u8272\u5e76\u5c06 A \u5bf9\u8c61\u6307\u5411\u7684\u5bf9\u8c61 B \u6807\u8bb0\u6210\u7070\u8272\uff1b<\/li>\n<li>\u7528\u6237\u7a0b\u5e8f\u5c06 A \u5bf9\u8c61\u539f\u672c\u6307\u5411 B \u7684\u6307\u9488\u6307\u5411 C\uff0c\u89e6\u53d1\u5220\u9664\u5199\u5c4f\u969c\uff0c\u4f46\u662f\u56e0\u4e3a B \u5bf9\u8c61\u5df2\u7ecf\u662f\u7070\u8272\u7684\uff0c\u6240\u4ee5\u4e0d\u505a\u6539\u53d8\uff1b<\/li>\n<li><strong>\u7528\u6237\u7a0b\u5e8f\u5c06 B \u5bf9\u8c61\u539f\u672c\u6307\u5411 C \u7684\u6307\u9488\u5220\u9664\uff0c\u89e6\u53d1\u5220\u9664\u5199\u5c4f\u969c\uff0c\u767d\u8272\u7684 C \u5bf9\u8c61\u88ab\u6d82\u6210\u7070\u8272<\/strong>\uff1b<\/li>\n<li>\u5783\u573e\u6536\u96c6\u5668\u4f9d\u6b21\u904d\u5386\u7a0b\u5e8f\u4e2d\u7684\u5176\u4ed6\u7070\u8272\u5bf9\u8c61\uff0c\u5c06\u5b83\u4eec\u5206\u522b\u6807\u8bb0\u6210\u9ed1\u8272\uff1b<\/li>\n<\/ol>\n<p>\u4e0a\u8ff0\u8fc7\u7a0b\u4e2d\u7684\u7b2c\u4e09\u6b65\u89e6\u53d1\u4e86 Yuasa \u5220\u9664\u5199\u5c4f\u969c\u7684\u7740\u8272\uff0c\u56e0\u4e3a\u7528\u6237\u7a0b\u5e8f\u5220\u9664\u4e86 B \u6307\u5411 C \u5bf9\u8c61\u7684\u6307\u9488\uff0c\u6240\u4ee5 C \u548c D \u4e24\u4e2a\u5bf9\u8c61\u4f1a\u5206\u522b\u8fdd\u53cd\u5f3a\u4e09\u8272\u4e0d\u53d8\u6027\u548c\u5f31\u4e09\u8272\u4e0d\u53d8\u6027\uff1a<\/p>\n<ul>\n<li>\u5f3a\u4e09\u8272\u4e0d\u53d8\u6027 \u2014 \u9ed1\u8272\u7684 A \u5bf9\u8c61\u76f4\u63a5\u6307\u5411\u767d\u8272\u7684 C \u5bf9\u8c61\uff1b<\/li>\n<li>\u5f31\u4e09\u8272\u4e0d\u53d8\u6027 \u2014 \u5783\u573e\u6536\u96c6\u5668\u65e0\u6cd5\u4ece\u67d0\u4e2a\u7070\u8272\u5bf9\u8c61\u51fa\u53d1\uff0c\u7ecf\u8fc7\u51e0\u4e2a\u8fde\u7eed\u7684\u767d\u8272\u5bf9\u8c61\u8bbf\u95ee\u767d\u8272\u7684 C \u548c D \u4e24\u4e2a\u5bf9\u8c61\uff1b<\/li>\n<\/ul>\n<p>Yuasa \u5220\u9664\u5199\u5c4f\u969c\u901a\u8fc7\u5bf9 C \u5bf9\u8c61\u7684\u7740\u8272\uff0c\u4fdd\u8bc1\u4e86 C \u5bf9\u8c61\u548c\u4e0b\u6e38\u7684 D \u5bf9\u8c61\u80fd\u591f\u5728\u8fd9\u4e00\u6b21\u5783\u573e\u6536\u96c6\u7684\u5faa\u73af\u4e2d\u5b58\u6d3b\uff0c\u907f\u514d\u53d1\u751f\u60ac\u6302\u6307\u9488\u4ee5\u4fdd\u8bc1\u7528\u6237\u7a0b\u5e8f\u7684\u6b63\u786e\u6027\u3002<\/p>\n<p>\u5220\u9664\u5199\u5c4f\u969c\u7684\u7f3a\u70b9\u4e0e\u63d2\u5165\u5199\u5c4f\u969c\u4e00\u6837\uff1a\u540c\u6837\u5b58\u5728\u56de\u6536\u7cbe\u5ea6\u8f83\u4f4e\u7684\u95ee\u9898:\u4e00\u4e2a\u5bf9\u8c61\u5373\u4f7f\u88ab\u5220\u9664\u4e86\u6700\u540e\u4e00\u4e2a\u6307\u5411\u5b83\u7684\u6307\u9488\u4e5f\u4f9d\u65e7\u53ef\u4ee5\u6d3b\u8fc7\u8fd9\u4e00\u8f6e\uff0c\u5728\u4e0b\u4e00\u8f6eGC\u4e2d\u88ab\u6e05\u7406\u6389\uff0c\u5982\u4e0b<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5220\u9664\u5c4f\u969c1.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5220\u9664\u5c4f\u969c1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5220\u9664\u5c4f\u969c2.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5220\u9664\u5c4f\u969c2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5220\u9664\u5c4f\u969c3.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5220\u9664\u5c4f\u969c3.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5220\u9664\u5c4f\u969c4.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u5220\u9664\u5c4f\u969c4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<h5>\uff085\uff09\u6df7\u5408\u5199\u5c4f\u969c<\/h5>\n<p>\u63d2\u5165\u5c4f\u969c\u548c\u5220\u9664\u5c4f\u969c\u5404\u6709\u4f18\u7f3a\u70b9<\/p>\n<p>1\u3001Dijkstra\u7684\u63d2\u5165\u5199\u5c4f\u969c\u5728\u6807\u8bb0\u5f00\u59cb\u65f6\u65e0\u9700STW\uff0c\u53ef\u76f4\u63a5\u5f00\u59cb\uff0c\u5e76\u53d1\u8fdb\u884c\uff0c\u4f46\u7ed3\u675f\u65f6\u9700\u8981STW\u6765\u91cd\u65b0\u626b\u63cf\u6808\uff0c\u6807\u8bb0\u6808\u4e0a\u5f15\u7528\u7684\u767d\u8272\u5bf9\u8c61\u7684\u5b58\u6d3b\uff1b<\/p>\n<p>2\u3001Yuasa\u7684\u5220\u9664\u5199\u5c4f\u969c\u5219\u9700\u8981\u5728GC\u5f00\u59cb\u65f6STW\u626b\u63cf\u5806\u6808\u6765\u8bb0\u5f55\u521d\u59cb\u5feb\u7167\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u4f1a\u4fdd\u62a4\u5f00\u59cb\u65f6\u523b\u7684\u6240\u6709\u5b58\u6d3b\u5bf9\u8c61\uff0c\u4f46\u7ed3\u675f\u65f6\u65e0\u9700STW\u3002<\/p>\n<p>Go1.8\u7248\u672c\u5f15\u5165\u7684\u6df7\u5408\u5199\u5c4f\u969c\uff08hybrid write barrier\uff09\u7ed3\u5408\u4e86Yuasa\u7684\u5220\u9664\u5199\u5c4f\u969c\u548cDijkstra\u7684\u63d2\u5165\u5199\u5c4f\u969c\uff0c\u907f\u514d\u4e86\u5bf9\u6808re-scan\u7684\u8fc7\u7a0b\uff0c\u6781\u5927\u7684\u51cf\u5c11\u4e86STW\u7684\u65f6\u95f4\u3002\u7ed3\u5408\u4e86\u4e24\u8005\u7684\u4f18\u70b9\u3002<\/p>\n<p>\u4f2a\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-go\">writePointer(slot, ptr):  \/\/ \u6dfb\u52a0\u4e0b\u6e38\u5bf9\u8c61(\u5f53\u524d\u4e0b\u6e38\u5bf9\u8c61slot, \u65b0\u4e0b\u6e38\u5bf9\u8c61ptr)\n    shade(*slot)          \/\/ \u6807\u8bb0\u7070\u8272(\u5f53\u524d\u4e0b\u6e38\u5bf9\u8c61slot)\uff0c\u53ea\u8981\u5f53\u524d\u4e0b\u6e38\u5bf9\u8c61\u88ab\u79fb\u8d70\uff0c\u5c31\u6807\u8bb0\u7070\u8272\n    if current stack is grey:\n        shade(ptr)       \/\/ \u6807\u8bb0\u7070\u8272(\u65b0\u4e0b\u6e38\u5bf9\u8c61ptr)\n    *slot = ptr          \/\/ \u5f53\u524d\u4e0b\u6e38\u5bf9\u8c61slot = \u65b0\u4e0b\u6e38\u5bf9\u8c61ptr<\/code><\/pre>\n<p>\u8fd9\u91cc\u4f7f\u7528\u4e86\u4e24\u4e2ashade\u64cd\u4f5c\uff0cshade(*slot)\u662f\u5220\u9664\u5199\u5c4f\u969c\u7684\u53d8\u5f62\uff0c\u4f8b\u5982\uff0c\u4e00\u4e2a\u5806\u4e0a\u7684\u7070\u8272\u5bf9\u8c61B\uff0c\u5f15\u7528\u767d\u8272\u5bf9\u8c61C\uff0c\u5728GC\u5e76\u53d1\u8fd0\u884c\u7684\u8fc7\u7a0b\u4e2d\uff0c\u5982\u679c\u6808\u5df2\u626b\u63cf\u7f6e\u9ed1\uff0c\u800c\u8d4b\u503c\u5668\u5c06\u6307\u5411C\u7684\u552f\u4e00\u6307\u9488\u4eceB\u4e2d\u5220\u9664\uff0c\u5e76\u8ba9\u6808\u4e0a\u5176\u4ed6\u5bf9\u8c61\u5f15\u7528\u5b83\uff0c\u8fd9\u65f6\uff0c\u5199\u5c4f\u969c\u4f1a\u5728\u5220\u9664\u6307\u5411\u767d\u8272\u5bf9\u8c61C\u7684\u6307\u9488\u7684\u65f6\u5019\u5c31\u5c06C\u5bf9\u8c61\u7f6e\u7070\uff0c\u5c31\u53ef\u4ee5\u4fdd\u62a4\u4e0b\u6765\u4e86\uff0c\u4e14\u5b83\u4e0b\u6e38\u7684\u6240\u6709\u5bf9\u8c61\u90fd\u5904\u4e8e\u88ab\u4fdd\u62a4\u72b6\u6001\u3002 \u5982\u679c\u5bf9\u8c61B\u5728\u6808\u4e0a\uff0c\u5f15\u7528\u5806\u4e0a\u7684\u767d\u8272\u5bf9\u8c61C\uff0c\u5c06\u5176\u5f15\u7528\u5173\u7cfb\u5220\u9664\uff0c\u4e14\u65b0\u589e\u4e00\u4e2a\u9ed1\u8272\u5bf9\u8c61\u5230\u5bf9\u8c61C\u7684\u5f15\u7528\uff0c\u90a3\u4e48\u5c31\u9700\u8981\u901a\u8fc7shade(ptr)\u6765\u4fdd\u62a4\u4e86\uff0c\u5728\u6307\u9488\u63d2\u5165\u9ed1\u8272\u5bf9\u8c61\u65f6\u4f1a\u89e6\u53d1\u5bf9\u5bf9\u8c61C\u7684\u7f6e\u7070\u64cd\u4f5c\u3002\u5982\u679c\u6808\u5df2\u7ecf\u88ab\u626b\u63cf\u8fc7\u4e86\uff0c\u90a3\u4e48\u6808\u4e0a\u5f15\u7528\u7684\u5bf9\u8c61\u90fd\u662f\u7070\u8272\u6216\u53d7\u7070\u8272\u4fdd\u62a4\u7684\u767d\u8272\u5bf9\u8c61\u4e86\uff0c\u6240\u4ee5\u5c31\u6ca1\u6709\u5fc5\u8981\u518d\u8fdb\u884c\u8fd9\u6b65\u64cd\u4f5c\u3002<\/p>\n<p>Golang\u4e2d\u7684\u6df7\u5408\u5199\u5c4f\u969c\u6ee1\u8db3\u7684\u662f\u53d8\u5f62\u7684\u5f31\u4e09\u8272\u4e0d\u53d8\u5f0f\uff0c\u540c\u6837\u5141\u8bb8\u9ed1\u8272\u5bf9\u8c61\u5f15\u7528\u767d\u8272\u5bf9\u8c61\uff0c\u767d\u8272\u5bf9\u8c61\u5904\u4e8e\u7070\u8272\u4fdd\u62a4\u72b6\u6001\uff0c\u4f46\u662f\u53ea\u7531\u5806\u4e0a\u7684\u7070\u8272\u5bf9\u8c61\u4fdd\u62a4\u3002\u7531\u4e8e\u7ed3\u5408\u4e86Yuasa\u7684\u5220\u9664\u5199\u5c4f\u969c\u548cDijkstra\u7684\u63d2\u5165\u5199\u5c4f\u969c\u7684\u4f18\u70b9\uff0c\u53ea\u9700\u8981\u5728\u5f00\u59cb\u65f6\u5e76\u53d1\u626b\u63cf\u5404\u4e2agoroutine\u7684\u6808\uff0c\u4f7f\u5176\u53d8\u9ed1\u5e76\u4e00\u76f4\u4fdd\u6301\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u4e0d\u9700\u8981STW\uff0c\u800c\u6807\u8bb0\u7ed3\u675f\u540e\uff0c\u56e0\u4e3a\u6808\u5728\u626b\u63cf\u540e\u59cb\u7ec8\u662f\u9ed1\u8272\u7684\uff0c\u4e5f\u65e0\u9700\u518d\u8fdb\u884cre-scan\u64cd\u4f5c\u4e86\uff0c\u51cf\u5c11\u4e86STW\u7684\u65f6\u95f4\u3002<\/p>\n<p>\u603b\u7ed3\u5177\u4f53\u64cd\u4f5c<\/p>\n<p>1\u3001GC\u5f00\u59cb\u5c06\u6808\u4e0a\u7684\u5bf9\u8c61\u5168\u90e8\u626b\u63cf\u5e76\u6807\u8bb0\u4e3a\u9ed1\u8272(\u4e4b\u540e\u4e0d\u518d\u8fdb\u884c\u7b2c\u4e8c\u6b21\u91cd\u590d\u626b\u63cf\uff0c\u65e0\u9700STW)\uff0c<br \/>\n2\u3001GC\u671f\u95f4\uff0c\u4efb\u4f55\u5728\u6808\u4e0a\u521b\u5efa\u7684\u65b0\u5bf9\u8c61\uff0c\u5747\u4e3a\u9ed1\u8272\u3002<br \/>\n3\u3001\u88ab\u5220\u9664\u7684\u5bf9\u8c61\u6807\u8bb0\u4e3a\u7070\u8272\u3002<br \/>\n4\u3001\u88ab\u6dfb\u52a0\u7684\u5bf9\u8c61\u6807\u8bb0\u4e3a\u7070\u8272\u3002<\/p>\n<p><code>\u6ee1\u8db3<\/code>: \u53d8\u5f62\u7684<strong>\u5f31\u4e09\u8272\u4e0d\u53d8\u5f0f<\/strong>.<\/p>\n<p>\u603b\u7ed3\u6df7\u5408\u5199\u5c4f\u969c\u7279\u70b9<\/p>\n<ol>\n<li>\u6df7\u5408\u5199\u5c4f\u969c\u7ee7\u627f\u4e86\u63d2\u5165\u5199\u5c4f\u969c\u7684\u4f18\u70b9\uff0c\u8d77\u59cb\u65e0\u9700 STW \u6253\u5feb\u7167\uff0c\u76f4\u63a5\u5e76\u53d1\u626b\u63cf\u5783\u573e\u5373\u53ef\uff1b<\/li>\n<li>\u6df7\u5408\u5199\u5c4f\u969c\u7ee7\u627f\u4e86\u5220\u9664\u5199\u5c4f\u969c\u7684\u4f18\u70b9\uff0c\u8d4b\u503c\u5668\u662f\u9ed1\u8272\u8d4b\u503c\u5668\uff0c\u626b\u63cf\u8fc7\u4e00\u6b21\u5c31\u4e0d\u9700\u8981\u626b\u63cf\u4e86\uff0c\u8fd9\u6837\u5c31\u6d88\u9664\u4e86\u63d2\u5165\u5199\u5c4f\u969c\u65f6\u671f\u6700\u540e STW \u7684\u91cd\u65b0\u626b\u63cf\u6808\uff1b<\/li>\n<li>\u6df7\u5408\u5199\u5c4f\u969c\u626b\u63cf\u7cbe\u5ea6\u7ee7\u627f\u4e86\u5220\u9664\u5199\u5c4f\u969c\uff0c\u6bd4\u63d2\u5165\u5199\u5c4f\u969c\u66f4\u4f4e\uff0c\u968f\u7740\u5e26\u6765\u7684\u662f GC \u8fc7\u7a0b\u5168\u7a0b\u65e0 STW\uff1b<\/li>\n<li>\u6df7\u5408\u5199\u5c4f\u969c\u626b\u63cf\u6808\u867d\u7136\u6ca1\u6709 STW\uff0c\u4f46\u662f\u626b\u63cf\u67d0\u4e00\u4e2a\u5177\u4f53\u7684\u6808\u7684\u65f6\u5019\uff0c\u8fd8\u662f\u8981\u505c\u6b62\u8fd9\u4e2a goroutine \u8d4b\u503c\u5668\u7684\u5de5\u4f5c\u7684\uff08\u9488\u5bf9\u4e00\u4e2a goroutine \u6808\u6765\u8bf4\uff0c\u662f\u6682\u505c\u626b\u7684\uff0c\u8981\u4e48\u5168\u7070\uff0c\u8981\u4e48\u5168\u9ed1\uff0c\u539f\u5b50\u72b6\u6001\u5207\u6362\uff09<\/li>\n<\/ol>\n<p>\u6df7\u5408\u5199\u5c4f\u969c\u7684\u5177\u4f53\u573a\u666f\u5206\u6790<\/p>\n<p><strong>\u6ce8\u610f\u6df7\u5408\u5199\u5c4f\u969c\u662fGC\u7684\u4e00\u79cd\u5c4f\u969c\u673a\u5236\uff0c\u6240\u4ee5\u53ea\u662f\u5f53\u7a0b\u5e8f\u6267\u884cGC\u7684\u65f6\u5019\uff0c\u624d\u4f1a\u89e6\u53d1\u8fd9\u79cd\u673a\u5236\u3002<\/strong><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u6df7\u5408\u5c4f\u969c1.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/\u6df7\u5408\u5c4f\u969c1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u8bc1\u660e\uff1a\u5bf9\u4e8e\u5185\u5b58\u5bf9\u8c61\u7684\u64cd\u4f5c\u4e3b\u8981\u5305\u62ec\u56db\u79cd\u57fa\u672c\u60c5\u51b5\uff0c\u6240\u4ee5\u6211\u4eec\u53ea\u8981\u80fd\u5728\u4e0a\u8ff0\u56db\u79cd\u60c5\u51b5\u4e0b\uff0c\u4fdd\u969c\u5f31\u4e09\u539f\u8272\u7ea6\u675f\uff0c\u5c31\u80fd\u8bc1\u660e\u8be5\u5199\u5c4f\u969c\u662f\u53ef\u9760\u7684\u3002<\/p>\n<ol>\n<li>\u6808\u6307\u9488\u91cd\u6307\u5411\u5230\u4e86\u53e6\u4e00\u4e2a\u5806\u6307\u9488\u5bf9\u8c61\uff1b<\/li>\n<li>\u6808\u6307\u9488\u91cd\u6307\u5411\u5230\u4e86\u53e6\u4e00\u4e2a\u6808\u6307\u9488\u5bf9\u8c61\uff1b<\/li>\n<li>\u5806\u6307\u9488\u91cd\u6307\u5411\u5230\u4e86\u53e6\u4e00\u4e2a\u5806\u6307\u9488\u5bf9\u8c61\uff1b<\/li>\n<li>\u5806\u6307\u9488\u91cd\u6307\u5411\u5230\u4e86\u53e6\u4e00\u4e2a\u6808\u6307\u9488\u5bf9\u8c61\uff1b<\/li>\n<\/ol>\n<h4>\u589e\u91cf\u548c\u5e76\u53d1<\/h4>\n<p>\u4f20\u7edf\u7684\u5783\u573e\u6536\u96c6\u7b97\u6cd5\u4f1a\u5728\u5783\u573e\u6536\u96c6\u7684\u6267\u884c\u671f\u95f4\u6682\u505c\u5e94\u7528\u7a0b\u5e8f\uff0c\u4e00\u65e6\u89e6\u53d1\u5783\u573e\u6536\u96c6\uff0c\u5783\u573e\u6536\u96c6\u5668\u4f1a\u62a2\u5360 CPU \u7684\u4f7f\u7528\u6743\u5360\u636e\u5927\u91cf\u7684\u8ba1\u7b97\u8d44\u6e90\u4ee5\u5b8c\u6210\u6807\u8bb0\u548c\u6e05\u9664\u5de5\u4f5c\uff0c\u7136\u800c\u5f88\u591a\u8ffd\u6c42\u5b9e\u65f6\u7684\u5e94\u7528\u7a0b\u5e8f\u65e0\u6cd5\u63a5\u53d7\u957f\u65f6\u95f4\u7684 STW\u3002<\/p>\n<p>\u4e3a\u4e86\u51cf\u5c11\u5e94\u7528\u7a0b\u5e8f\u6682\u505c\u7684\u6700\u957f\u65f6\u95f4\u548c\u5783\u573e\u6536\u96c6\u7684\u603b\u6682\u505c\u65f6\u95f4\uff0c\u6211\u4eec\u4f1a\u4f7f\u7528\u4e0b\u9762\u7684\u7b56\u7565\u4f18\u5316\u73b0\u4ee3\u7684\u5783\u573e\u6536\u96c6\u5668\uff1a<\/p>\n<ul>\n<li>\u589e\u91cf\u5783\u573e\u6536\u96c6\uff1a\u589e\u91cf\u5730\u6807\u8bb0\u548c\u6e05\u9664\u5783\u573e\uff0c\u964d\u4f4e\u5e94\u7528\u7a0b\u5e8f\u6682\u505c\u7684\u6700\u957f\u65f6\u95f4\uff1b<\/li>\n<li>\u5e76\u53d1\u5783\u573e\u6536\u96c6\uff1a\u5229\u7528\u591a\u6838\u7684\u8ba1\u7b97\u8d44\u6e90\uff0c\u5728\u7528\u6237\u7a0b\u5e8f\u6267\u884c\u65f6\u5e76\u53d1\u6807\u8bb0\u548c\u6e05\u9664\u5783\u573e\uff1b<\/li>\n<\/ul>\n<p>\u56e0\u4e3a\u589e\u91cf\u548c\u5e76\u53d1\u4e24\u79cd\u65b9\u5f0f\u90fd\u53ef\u4ee5\u4e0e\u7528\u6237\u7a0b\u5e8f\u4ea4\u66ff\u8fd0\u884c\uff0c\u6240\u4ee5\u6211\u4eec\u9700\u8981\u4f7f\u7528\u5c4f\u969c\u6280\u672f\u4fdd\u8bc1\u5783\u573e\u6536\u96c6\u7684\u6b63\u786e\u6027\uff1b\u4e0e\u6b64\u540c\u65f6\uff0c\u5e94\u7528\u7a0b\u5e8f\u4e5f\u4e0d\u80fd\u7b49\u5230\u5185\u5b58\u6ea2\u51fa\u65f6\u89e6\u53d1\u5783\u573e\u6536\u96c6\uff0c\u56e0\u4e3a\u5f53\u5185\u5b58\u4e0d\u8db3\u65f6\uff0c\u5e94\u7528\u7a0b\u5e8f\u5df2\u7ecf\u65e0\u6cd5\u5206\u914d\u5185\u5b58\uff0c\u8fd9\u4e0e\u76f4\u63a5\u6682\u505c\u7a0b\u5e8f\u6ca1\u6709\u4ec0\u4e48\u533a\u522b\uff0c\u589e\u91cf\u548c\u5e76\u53d1\u7684\u5783\u573e\u6536\u96c6\u9700\u8981\u63d0\u524d\u89e6\u53d1\u5e76\u5728\u5185\u5b58\u4e0d\u8db3\u524d\u5b8c\u6210\u6574\u4e2a\u5faa\u73af\uff0c\u907f\u514d\u7a0b\u5e8f\u7684\u957f\u65f6\u95f4\u6682\u505c\u3002<\/p>\n<h5>\u589e\u91cf\u6536\u96c6<\/h5>\n<p>\u589e\u91cf\u5f0f\uff08Incremental\uff09\u7684\u5783\u573e\u6536\u96c6\u662f\u51cf\u5c11\u7a0b\u5e8f\u6700\u957f\u6682\u505c\u65f6\u95f4\u7684\u4e00\u79cd\u65b9\u6848\uff0c\u5b83\u53ef\u4ee5\u5c06\u539f\u672c\u65f6\u95f4\u8f83\u957f\u7684\u6682\u505c\u65f6\u95f4\u5207\u5206\u6210\u591a\u4e2a\u66f4\u5c0f\u7684 GC \u65f6\u95f4\u7247\uff0c\u867d\u7136\u4ece\u5783\u573e\u6536\u96c6\u5f00\u59cb\u5230\u7ed3\u675f\u7684\u65f6\u95f4\u66f4\u957f\u4e86\uff0c\u4f46\u662f\u8fd9\u4e5f\u51cf\u5c11\u4e86\u5e94\u7528\u7a0b\u5e8f\u6682\u505c\u7684\u6700\u5927\u65f6\u95f4\uff1a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc12.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc12.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u589e\u91cf\u5f0f\u7684\u5783\u573e\u6536\u96c6\u9700\u8981\u4e0e\u4e09\u8272\u6807\u8bb0\u6cd5\u4e00\u8d77\u4f7f\u7528\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u5783\u573e\u6536\u96c6\u7684\u6b63\u786e\u6027\uff0c\u6211\u4eec\u9700\u8981\u5728\u5783\u573e\u6536\u96c6\u5f00\u59cb\u524d\u6253\u5f00\u5199\u5c4f\u969c\uff0c\u8fd9\u6837\u7528\u6237\u7a0b\u5e8f\u4fee\u6539\u5185\u5b58\u90fd\u4f1a\u5148\u7ecf\u8fc7\u5199\u5c4f\u969c\u7684\u5904\u7406\uff0c\u4fdd\u8bc1\u4e86\u5806\u5185\u5b58\u4e2d\u5bf9\u8c61\u5173\u7cfb\u7684\u5f3a\u4e09\u8272\u4e0d\u53d8\u6027\u6216\u8005\u5f31\u4e09\u8272\u4e0d\u53d8\u6027\u3002\u867d\u7136\u589e\u91cf\u5f0f\u7684\u5783\u573e\u6536\u96c6\u80fd\u591f\u51cf\u5c11\u6700\u5927\u7684\u7a0b\u5e8f\u6682\u505c\u65f6\u95f4\uff0c\u4f46\u662f\u589e\u91cf\u5f0f\u6536\u96c6\u4e5f\u4f1a\u589e\u52a0\u4e00\u6b21 GC \u5faa\u73af\u7684\u603b\u65f6\u95f4\uff0c\u5728\u5783\u573e\u6536\u96c6\u671f\u95f4\uff0c\u56e0\u4e3a\u5199\u5c4f\u969c\u7684\u5f71\u54cd\u7528\u6237\u7a0b\u5e8f\u4e5f\u9700\u8981\u627f\u62c5\u989d\u5916\u7684\u8ba1\u7b97\u5f00\u9500\uff0c\u6240\u4ee5\u589e\u91cf\u5f0f\u7684\u5783\u573e\u6536\u96c6\u4e5f\u4e0d\u662f\u53ea\u5e26\u6765\u597d\u5904\u7684\uff0c\u4f46\u662f\u603b\u4f53\u6765\u8bf4\u8fd8\u662f\u5229\u5927\u4e8e\u5f0a\u3002<\/p>\n<h5>\u5e76\u53d1\u6536\u96c6<\/h5>\n<p>\u5e76\u53d1\uff08Concurrent\uff09\u7684\u5783\u573e\u6536\u96c6\u4e0d\u4ec5\u80fd\u591f\u51cf\u5c11\u7a0b\u5e8f\u7684\u6700\u957f\u6682\u505c\u65f6\u95f4\uff0c\u8fd8\u80fd\u51cf\u5c11\u6574\u4e2a\u5783\u573e\u6536\u96c6\u9636\u6bb5\u7684\u65f6\u95f4\uff0c\u901a\u8fc7\u5f00\u542f\u8bfb\u5199\u5c4f\u969c\u3001\u5229\u7528\u591a\u6838\u4f18\u52bf\u4e0e\u7528\u6237\u7a0b\u5e8f\u5e76\u884c\u6267\u884c\uff0c\u5e76\u53d1\u5783\u573e\u6536\u96c6\u5668\u786e\u5b9e\u80fd\u591f\u51cf\u5c11\u5783\u573e\u6536\u96c6\u5bf9\u5e94\u7528\u7a0b\u5e8f\u7684\u5f71\u54cd\uff1a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc13-e1674886235436.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc13-e1674886235436.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u867d\u7136\u5e76\u53d1\u6536\u96c6\u5668\u80fd\u591f\u4e0e\u7528\u6237\u7a0b\u5e8f\u4e00\u8d77\u8fd0\u884c\uff0c\u4f46\u662f\u5e76\u4e0d\u662f\u6240\u6709\u9636\u6bb5\u90fd\u53ef\u4ee5\u4e0e\u7528\u6237\u7a0b\u5e8f\u4e00\u8d77\u8fd0\u884c\uff0c\u90e8\u5206\u9636\u6bb5\u8fd8\u662f\u9700\u8981\u6682\u505c\u7528\u6237\u7a0b\u5e8f\u7684\uff0c\u4e0d\u8fc7\u4e0e\u4f20\u7edf\u7684\u7b97\u6cd5\u76f8\u6bd4\uff0c\u5e76\u53d1\u7684\u5783\u573e\u6536\u96c6\u53ef\u4ee5\u5c06\u80fd\u591f\u5e76\u53d1\u6267\u884c\u7684\u5de5\u4f5c\u5c3d\u91cf\u5e76\u53d1\u6267\u884c\uff1b\u5f53\u7136\uff0c\u56e0\u4e3a\u8bfb\u5199\u5c4f\u969c\u7684\u5f15\u5165\uff0c\u5e76\u53d1\u7684\u5783\u573e\u6536\u96c6\u5668\u4e5f\u4e00\u5b9a\u4f1a\u5e26\u6765\u989d\u5916\u5f00\u9500\uff0c\u4e0d\u4ec5\u4f1a\u589e\u52a0\u5783\u573e\u6536\u96c6\u7684\u603b\u65f6\u95f4\uff0c\u8fd8\u4f1a\u5f71\u54cd\u7528\u6237\u7a0b\u5e8f\uff0c\u8fd9\u662f\u6211\u4eec\u5728\u8bbe\u8ba1\u5783\u573e\u6536\u96c6\u7b56\u7565\u65f6\u5fc5\u987b\u8981\u6ce8\u610f\u7684\u3002<\/p>\n<h3>GC\u7684\u65f6\u673a<\/h3>\n<p>\u8fd0\u884c\u65f6\u4f1a\u901a\u8fc7\u5982\u4e0b\u6240\u793a\u7684 <a href=\"https:\/\/draveness.me\/golang\/tree\/runtime.gcTrigger.test\"><code>runtime.gcTrigger.test<\/code><\/a> \u65b9\u6cd5\u51b3\u5b9a\u662f\u5426\u9700\u8981\u89e6\u53d1\u5783\u573e\u6536\u96c6\uff0c\u5f53\u6ee1\u8db3\u89e6\u53d1\u5783\u573e\u6536\u96c6\u7684\u57fa\u672c\u6761\u4ef6\u65f6 \u2014 \u5141\u8bb8\u5783\u573e\u6536\u96c6\u3001\u7a0b\u5e8f\u6ca1\u6709\u5d29\u6e83\u5e76\u4e14\u6ca1\u6709\u5904\u4e8e\u5783\u573e\u6536\u96c6\u5faa\u73af\uff0c\u8be5\u65b9\u6cd5\u4f1a\u6839\u636e\u4e09\u79cd\u4e0d\u540c\u65b9\u5f0f\u89e6\u53d1\u8fdb\u884c\u4e0d\u540c\u7684\u68c0\u67e5\uff1a<\/p>\n<pre><code class=\"language-go\">func (t gcTrigger) test() bool {\n    if !memstats.enablegc || panicking != 0 || gcphase != _GCoff {\n        return false\n    }\n    switch t.kind {\n    case gcTriggerHeap:\n        return memstats.heap_live &gt;= memstats.gc_trigger\n    case gcTriggerTime:\n        if gcpercent &lt; 0 {\n            return false\n        }\n        lastgc := int64(atomic.Load64(&amp;memstats.last_gc_nanotime))\n        return lastgc != 0 &amp;&amp; t.now-lastgc &gt; forcegcperiod\n    case gcTriggerCycle:\n        return int32(t.n-work.cycles) &gt; 0\n    }\n    return true\n}<\/code><\/pre>\n<ol>\n<li><code>gcTriggerHeap<\/code> \uff1a\u5806\u5185\u5b58\u7684\u5206\u914d\u8fbe\u5230\u8fbe\u63a7\u5236\u5668\u8ba1\u7b97\u7684\u89e6\u53d1\u5806\u5927\u5c0f\uff1b<\/li>\n<li><code>gcTriggerTime<\/code> \uff1a\u5982\u679c\u4e00\u5b9a\u65f6\u95f4\u5185\u6ca1\u6709\u89e6\u53d1\uff0c\u5c31\u4f1a\u89e6\u53d1\u65b0\u7684\u5faa\u73af\uff0c\u8be5\u51fa\u53d1\u6761\u4ef6\u7531 <a href=\"https:\/\/draveness.me\/golang\/tree\/runtime.forcegcperiod\"><code>runtime.forcegcperiod<\/code><\/a> \u53d8\u91cf\u63a7\u5236\uff0c\u9ed8\u8ba4\u4e3a 2 \u5206\u949f\uff1b<\/li>\n<li><code>gcTriggerCycle<\/code>\uff1a\u5982\u679c\u5f53\u524d\u6ca1\u6709\u5f00\u542f\u5783\u573e\u6536\u96c6\uff0c\u5219\u89e6\u53d1\u65b0\u7684\u5faa\u73af\uff1b<\/li>\n<li><a href=\"https:\/\/draveness.me\/golang\/tree\/runtime.gcpercent\"><code>runtime.gcpercent<\/code><\/a> \u662f\u89e6\u53d1\u5783\u573e\u6536\u96c6\u7684\u5185\u5b58\u589e\u957f\u767e\u5206\u6bd4\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4e3a 100\uff0c\u5373\u5806\u5185\u5b58\u76f8\u6bd4\u4e0a\u6b21\u5783\u573e\u6536\u96c6\u589e\u957f 100% \u65f6\u5e94\u8be5\u89e6\u53d1 GC\uff0c\u5e76\u884c\u7684\u5783\u573e\u6536\u96c6\u5668\u4f1a\u5728\u5230\u8fbe\u8be5\u76ee\u6807\u524d\u5b8c\u6210\u5783\u573e\u6536\u96c6\u3002<\/li>\n<\/ol>\n<p>\u7528\u4e8e\u5f00\u542f\u5783\u573e\u6536\u96c6\u7684\u65b9\u6cd5 <a href=\"https:\/\/draveness.me\/golang\/tree\/runtime.gcStart\"><code>runtime.gcStart<\/code><\/a> \u4f1a\u63a5\u6536\u4e00\u4e2a <a href=\"https:\/\/draveness.me\/golang\/tree\/runtime.gcTrigger\"><code>runtime.gcTrigger<\/code><\/a> \u7c7b\u578b\u7684\u7ed3\u6784\uff0c\u6240\u6709\u51fa\u73b0 <a href=\"https:\/\/draveness.me\/golang\/tree\/runtime.gcTrigger\"><code>runtime.gcTrigger<\/code><\/a> \u7ed3\u6784\u4f53\u7684\u4f4d\u7f6e\u90fd\u662f\u89e6\u53d1\u5783\u573e\u6536\u96c6\u7684\u4ee3\u7801\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/draveness.me\/golang\/tree\/runtime.sysmon\"><code>runtime.sysmon<\/code><\/a> \u548c <a href=\"https:\/\/draveness.me\/golang\/tree\/runtime.forcegchelper\"><code>runtime.forcegchelper<\/code><\/a> \uff1a\u540e\u53f0\u8fd0\u884c\u5b9a\u65f6\u68c0\u67e5\u548c\u5783\u573e\u6536\u96c6\uff1b<\/li>\n<li><a href=\"https:\/\/draveness.me\/golang\/tree\/runtime.GC\"><code>runtime.GC<\/code><\/a> \uff1a\u7528\u6237\u7a0b\u5e8f\u624b\u52a8\u89e6\u53d1\u5783\u573e\u6536\u96c6\uff1b<\/li>\n<li><a href=\"https:\/\/draveness.me\/golang\/tree\/runtime.mallocgc\"><code>runtime.mallocgc<\/code><\/a> \uff1a\u7533\u8bf7\u5185\u5b58\u65f6\u6839\u636e\u5806\u5927\u5c0f\u89e6\u53d1\u5783\u573e\u6536\u96c6\u3002<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc13-e1674886235436.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2023\/01\/gogc13-e1674886235436.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u66f4\u591a\u53c2\u8003\uff1a<\/p>\n<p><a href=\"https:\/\/draveness.me\/golang\/docs\/part3-runtime\/ch07-memory\/golang-garbage-collector\/\">\u5783\u573e\u6536\u96c6\u5668<\/a><\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000018161588\">GO GC \u5783\u573e\u56de\u6536\u673a\u5236<\/a><\/p>\n<p><a href=\"https:\/\/juejin.cn\/post\/6844903917650722829\">\u641e\u61c2Go\u5783\u573e\u56de\u6536<\/a><\/p>\n<p><a href=\"https:\/\/wingsxdu.com\/post\/golang\/gc\/\">Go \u8bed\u8a00 GC \u673a\u5236 \u00b7 Analyze<\/a><\/p>\n<p>\u8fd9\u4e2aGC\u4ec0\u4e48\u65f6\u5019\u4f1a\u88ab\u89e6\u53d1\u5462\uff1f<\/p>\n<p>\u8003\u70b9\uff1aGC\u7ec6\u8282<\/p>\n<p>\u8d85\u8d85\uff1a\u89e6\u53d1GC\u6709\u4fe9\u4e2a\u6761\u4ef6\uff0c\u4e00\u662f\u5806\u5185\u5b58\u7684\u5206\u914d\u8fbe\u5230\u63a7\u5236\u5668\u8ba1\u7b97\u7684\u89e6\u53d1\u5806\u5927\u5c0f\uff0c\u521d\u59cb\u5927\u5c0f\u73af\u5883\u53d8\u91cfGOGC\uff0c\u4e4b\u540e\u5806\u5185\u5b58\u8fbe\u5230\u4e0a\u4e00\u6b21\u5783\u573e\u6536\u96c6\u7684 2 \u500d\u65f6\u624d\u4f1a\u89e6\u53d1GC\u3002\u4e8c\u662f\u5982\u679c\u4e00\u5b9a\u65f6\u95f4\u5185\u6ca1\u6709\u89e6\u53d1\uff0c\u5c31\u4f1a\u89e6\u53d1\u65b0\u7684\u5faa\u73af\uff0c\u8be5\u89e6\u53d1\u6761\u4ef6\u7531<code>runtime.forcegcperiod<\/code>\u53d8\u91cf\u63a7\u5236\uff0c\u9ed8\u8ba4\u4e3a 2 \u5206\u949f\u3002<\/p>\n<p>\u5728\u5b8c\u6210\u4e09\u8272\u6807\u8bb0\u540e\uff0c\u53ef\u80fd\u7528\u6237\u7a0b\u5e8f\u5728\u6807\u8bb0\u6267\u884c\u7684\u8fc7\u7a0b\u4e2d\u4fee\u6539\u5bf9\u8c61\u7684\u6307\u9488\uff0c\u56e0\u4e3a\u4e09\u8272\u6807\u8bb0\u6e05\u9664\u7b97\u6cd5\u4e0d\u652f\u6301\u5e76\u53d1\u548c\u589e\u91cf\u6267\u884c\uff0c\u6240\u6709\u9700\u8981STW\u3002\u5982\u679c\u7528\u6237\u7a0b\u5e8f\u5efa\u7acb\u4eceA\u5bf9\u8c61\u5230D\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u4f46\u7a0b\u5e8f\u4e2d\u5df2\u7ecf\u4e0d\u5b58\u5728\u7070\u8272\u5bf9\u8c61\u4e86\uff0c\u6240\u6709D\u5bf9\u8c61\u4f1a\u88ab\u5783\u573e\u6536\u96c6\u5668\u9519\u8bef\u5730\u56de\u6536\u3002\u672c\u6765\u4e0d\u5e94\u8be5\u88ab\u56de\u6536\u7684\u5bf9\u8c61\u88ab\u56de\u6536\u4e86\uff0c\u5728\u5185\u5b58\u7ba1\u7406\u4e2d\u662f\u975e\u5e38\u4e25\u91cd\u7684\u9519\u8bef\uff0c\u8fd9\u79cd\u9519\u8bef\u79f0\u4e3a\u60ac\u6302\u6307\u9488\uff0c\u5373\u6307\u9488\u6ca1\u6709\u6307\u5411\u7279\u5b9a\u7c7b\u578b\u7684\u5408\u6cd5\u5bf9\u8c61\uff0c\u5f71\u54cd\u5185\u5b58\u5b89\u5168\u6027\uff0c\u60f3\u8981\u5e76\u53d1\u6216\u8005\u589e\u91cf\u5730\u6807\u8bb0\u5bf9\u8c61\u9700\u8981\u4f7f\u7528\u5c4f\u969c\u6280\u672f\u3002<\/p>\n<p>\u7136\u540e\u4ecb\u7ecd\u5c4f\u969c\u6280\u672f<\/p>\n<p>\u90a3\u4e48\u4e09\u8272\u7b97\u6cd5\u662f\u5982\u4f55\u89e3\u51b3STW\u95ee\u9898\u7684\uff1f\uff1f\uff1f<\/p>\n<p>\u4e09\u8272\u7b97\u6cd5<\/p>\n<p>\u540c\u65f6\u5f15\u5165\u4e86\u4e0a\u6587\u4ecb\u7ecd\u7684\u4e09\u8272\u6807\u8bb0\u6cd5\uff0c\u8fd9\u79cd\u65b9\u6cd5\u7684mark\u64cd\u4f5c\u662f\u53ef\u4ee5\u6e10\u8fdb\u6267\u884c\u7684\u800c\u4e0d\u9700\u6bcf\u6b21\u90fd\u626b\u63cf\u6574\u4e2a\u5185\u5b58\u7a7a\u95f4\uff0c\u53ef\u4ee5\u51cf\u5c11stop the world\u7684\u65f6\u95f4<\/p>\n<p>\u6e10\u8fdb\u5f0f\uff1a<br \/>\n\u5185\u5b58\u7ba1\u7406\u4e0e\u7528\u6237\u7a0b\u5e8f\u7684\u6267\u884c\u4ea4\u7ec7\u5728\u4e00\u8d77\uff0c\u8bb2GC\u7684\u4ee3\u7801\u5206\u6563\u5230\u6574\u4e2a\u627f\u8bfa\u9700\uff0c\u4e0d\u50cf\u4f20\u7edf\u7684\u6807\u8bb0\u6e05\u9664\u7b97\u6cd5\u90a3\u6837\u9700\u8981STW\uff0c<\/p>\n<p>\u4e0d\u8fc7<\/p>\n<p>\u76f8\u4fe1\u5f88\u591a\u4eba\u5bf9\u5783\u573e\u6536\u96c6\u5668\u7684\u5370\u8c61\u90fd\u662f\u6682\u505c\u7a0b\u5e8f\uff08Stop the world\uff0cSTW\uff09\uff0c\u968f\u7740\u7528\u6237\u7a0b\u5e8f\u7533\u8bf7\u8d8a\u6765\u8d8a\u591a\u7684\u5185\u5b58\uff0c\u7cfb\u7edf\u4e2d\u7684\u5783\u573e\u4e5f\u9010\u6e10\u589e\u591a\uff1b\u5f53\u7a0b\u5e8f\u7684\u5185\u5b58\u5360\u7528\u8fbe\u5230\u4e00\u5b9a\u9608\u503c\u65f6\uff0c\u6574\u4e2a\u5e94\u7528\u7a0b\u5e8f\u5c31\u4f1a\u5168\u90e8\u6682\u505c\uff0c\u5783\u573e\u6536\u96c6\u5668\u4f1a\u626b\u63cf\u5df2\u7ecf\u5206\u914d\u7684\u6240\u6709\u5bf9\u8c61\u5e76\u56de\u6536\u4e0d\u518d\u4f7f\u7528\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u5f53\u8fd9\u4e2a\u8fc7\u7a0b\u7ed3\u675f\u540e\uff0c\u7528\u6237\u7a0b\u5e8f\u624d\u53ef\u4ee5\u7ee7\u7eed\u6267\u884c\uff0cGo \u8bed\u8a00\u5728\u65e9\u671f\u4e5f\u4f7f\u7528\u8fd9\u79cd\u7b56\u7565\u5b9e\u73b0\u5783\u573e\u6536\u96c6\uff0c\u4f46\u662f\u4eca\u5929\u7684\u5b9e\u73b0\u5df2\u7ecf\u590d\u6742\u4e86\u5f88\u591a\u3002<\/p>\n<h3><strong>4. GC\u8c03\u4f18\u5e38\u89c1\u65b9\u6cd5<\/strong><\/h3>\n<ul>\n<li>\u5c3d\u91cf\u4f7f\u7528\u5c0f\u6570\u636e\u7c7b\u578b\uff0c\u6bd4\u5982\u4f7f\u7528<code>int8<\/code>\u4ee3\u66ff<code>int<\/code>\u3002<\/li>\n<li>\u5c11\u4f7f\u7528<code>+<\/code>\u8fde\u63a5<code>string<\/code>\uff1ago\u8bed\u8a00\u4e2dstring\u662f\u4e00\u4e2a\u53ea\u8bfb\u7c7b\u578b\uff0c\u9488\u5bf9string\u7684\u6bcf\u4e00\u4e2a\u64cd\u4f5c\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684string\u3002\u5927\u91cf\u5c0f\u6587\u672c\u62fc\u63a5\u65f6\u4f18\u5148\u4f7f\u7528<code>strings.Join<\/code>\uff0c\u5927\u91cf\u5927\u6587\u672c\u62fc\u63a5\u65f6\u4f7f\u7528<code>bytes.Buffer<\/code>\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u53d8\u91cf\u58f0\u660e\u5468\u671f\u4e0eGC\u673a\u5236 \u4e00 \u53d8\u91cf\u7684\u751f\u547d\u5468\u671f 1.1 \u533a\u5206\u4f5c\u7528\u57df\u4e0e\u751f\u547d\u5468\u671f \u53d8\u91cf\u7684\u4f5c\u7528\u57df VS \u53d8\u91cf\u7684\u751f\u547d\u5468\u671f  [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,450],"tags":[],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/7953"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7953"}],"version-history":[{"count":0,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/7953\/revisions"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7953"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7953"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}