{"id":37295,"date":"2023-12-11T14:40:54","date_gmt":"2023-12-11T06:40:54","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=37295"},"modified":"2023-12-11T14:40:54","modified_gmt":"2023-12-11T06:40:54","slug":"%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%ad%e5%af%b9%e8%b1%a1%e6%98%af%e5%90%a6%e6%ad%bb%e4%ba%a1%ef%bc%88%e4%b8%a4%e7%a7%8d%e6%96%b9%e6%b3%95%ef%bc%89%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%ad%e5%af%b9%e8%b1%a1%e6%98%af%e5%90%a6%e6%ad%bb%e4%ba%a1%ef%bc%88%e4%b8%a4%e7%a7%8d%e6%96%b9%e6%b3%95%ef%bc%89%ef%bc%9f\/","title":{"rendered":"\u5982\u4f55\u5224\u65ad\u5bf9\u8c61\u662f\u5426\u6b7b\u4ea1\uff08\u4e24\u79cd\u65b9\u6cd5\uff09\uff1f"},"content":{"rendered":"<p>&#8220;`&#8221;                    \u5806\u4e2d\u51e0\u4e4e\u653e\u7740\u6240\u6709\u7684\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u5bf9\u5806\u5783\u573e\u56de\u6536\u524d\u7684\u7b2c\u4e00\u6b65\u5c31\u662f\u8981\u5224\u65ad\u90a3\u4e9b\u5bf9\u8c61\u5df2\u7ecf\u6b7b\u4ea1\uff08\u5373\u4e0d\u80fd\u518d\u88ab\u4efb\u4f55\u9014\u5f84\u4f7f\u7528\u7684\u5bf9\u8c61\uff09\u3002<\/p>\n<p><img decoding=\"async\" alt=\"\"\"\" src=\"\"http:\/\/my-blog-to-use.oss-cn-beijing.aliyuncs.com\/18-8-27\/11034259.jpg\"\"><\/p>\n<h3>2.1 \u5f15\u7528\u8ba1\u6570\u6cd5<\/h3>\n<p>\u7ed9\u5bf9\u8c61\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u5f15\u7528\u8ba1\u6570\u5668\uff0c\u6bcf\u5f53\u6709\u4e00\u4e2a\u5730\u65b9\u5f15\u7528\u5b83\uff0c\u8ba1\u6570\u5668\u5c31\u52a0 1\uff1b\u5f53\u5f15\u7528\u5931\u6548\uff0c\u8ba1\u6570\u5668\u5c31\u51cf 1\uff1b\u4efb\u4f55\u65f6\u5019\u8ba1\u6570\u5668\u4e3a 0 \u7684\u5bf9\u8c61\u5c31\u662f\u4e0d\u53ef\u80fd\u518d\u88ab\u4f7f\u7528\u7684\u3002<\/p>\n<p><strong>\u8fd9\u4e2a\u65b9\u6cd5\u5b9e\u73b0\u7b80\u5355\uff0c\u6548\u7387\u9ad8\uff0c\u4f46\u662f\u76ee\u524d\u4e3b\u6d41\u7684\u865a\u62df\u673a\u4e2d\u5e76\u6ca1\u6709\u9009\u62e9\u8fd9\u4e2a\u7b97\u6cd5\u6765\u7ba1\u7406\u5185\u5b58\uff0c\u5176\u6700\u4e3b\u8981\u7684\u539f\u56e0\u662f\u5b83\u5f88\u96be\u89e3\u51b3\u5bf9\u8c61\u4e4b\u95f4\u76f8\u4e92\u5faa\u73af\u5f15\u7528\u7684\u95ee\u9898\u3002<\/strong> \u6240\u8c13\u5bf9\u8c61\u4e4b\u95f4\u7684\u76f8\u4e92\u5f15\u7528\u95ee\u9898\uff0c\u5982\u4e0b\u9762\u4ee3\u7801\u6240\u793a\uff1a\u9664\u4e86\u5bf9\u8c61 objA \u548c objB \u76f8\u4e92\u5f15\u7528\u7740\u5bf9\u65b9\u4e4b\u5916\uff0c\u8fd9\u4e24\u4e2a\u5bf9\u8c61\u4e4b\u95f4\u518d\u65e0\u4efb\u4f55\u5f15\u7528\u3002\u4f46\u662f\u4ed6\u4eec\u56e0\u4e3a\u4e92\u76f8\u5f15\u7528\u5bf9\u65b9\uff0c\u5bfc\u81f4\u5b83\u4eec\u7684\u5f15\u7528\u8ba1\u6570\u5668\u90fd\u4e0d\u4e3a 0\uff0c\u4e8e\u662f\u5f15\u7528\u8ba1\u6570\u7b97\u6cd5\u65e0\u6cd5\u901a\u77e5 GC \u56de\u6536\u5668\u56de\u6536\u4ed6\u4eec\u3002<\/p>\n<p><code><\/code>`javapublic class ReferenceCountingGc {    Object instance = null;   public static void main(String[] args) {        ReferenceCountingGc objA = new ReferenceCountingGc();       ReferenceCountingGc objB = new ReferenceCountingGc();       objA.instance = objB;       objB.instance = objA;       objA = null;        objB = null;<\/p>\n<pre><code>}<\/code><\/pre>\n<p>}<code><\/code>`<\/p>\n<h3>2.2 \u53ef\u8fbe\u6027\u5206\u6790\u7b97\u6cd5<\/h3>\n<p>\u8fd9\u4e2a\u7b97\u6cd5\u7684\u57fa\u672c\u601d\u60f3\u5c31\u662f\u901a\u8fc7\u4e00\u7cfb\u5217\u7684\u79f0\u4e3a <strong>\u201cGC Roots\u201d<\/strong> \u7684\u5bf9\u8c61\u4f5c\u4e3a\u8d77\u70b9\uff0c\u4ece\u8fd9\u4e9b\u8282\u70b9\u5f00\u59cb\u5411\u4e0b\u641c\u7d22\uff0c\u8282\u70b9\u6240\u8d70\u8fc7\u7684\u8def\u5f84\u79f0\u4e3a\u5f15\u7528\u94fe\uff0c\u5f53\u4e00\u4e2a\u5bf9\u8c61\u5230 GC Roots \u6ca1\u6709\u4efb\u4f55\u5f15\u7528\u94fe\u76f8\u8fde\u7684\u8bdd\uff0c\u5219\u8bc1\u660e\u6b64\u5bf9\u8c61\u662f\u4e0d\u53ef\u7528\u7684\u3002<\/p>\n<p><img decoding=\"async\" alt=\"\"\u53ef\u8fbe\u6027\u5206\u6790\u7b97\u6cd5 \"\" src=\"\"http:\/\/my-blog-to-use.oss-cn-beijing.aliyuncs.com\/18-8-27\/72762049.jpg\"\"><\/p>\n<pre><code>            \"```\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;`&#8221; 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