{"id":11213,"date":"2023-11-28T21:55:32","date_gmt":"2023-11-28T13:55:32","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11213"},"modified":"2023-12-08T11:13:43","modified_gmt":"2023-12-08T03:13:43","slug":"jvm-zhonggc-shi-shen-me-wei-shen-me-yao-yougc","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/jvm-zhonggc-shi-shen-me-wei-shen-me-yao-yougc\/","title":{"rendered":"JVM\u4e2dGC\u662f\u4ec0\u4e48\uff1f\u4e3a\u4ec0\u4e48\u8981\u6709GC?"},"content":{"rendered":"<p>GC\uff08Garbage 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id=\"gc%E7%9A%84%E5%B7%A5%E4%BD%9C%E5%8E%9F%E7%90%86%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>GC\u7684\u5de5\u4f5c\u539f\u7406\uff1a<\/h3>\n<ol>\n<li>\n<strong>\u6807\u8bb0\u9636\u6bb5\uff08Marking\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>\u9996\u5148\uff0cGC\u4f1a\u6807\u8bb0\u6240\u6709\u80fd\u591f\u88ab\u56de\u6536\u7684\u5bf9\u8c61\u3002\u901a\u5e38\uff0cGC\u4ece\u6839\u5bf9\u8c61\uff08\u5982\u7ebf\u7a0b\u6808\u3001\u9759\u6001\u53d8\u91cf\u7b49\uff09\u51fa\u53d1\uff0c\u901a\u8fc7\u53ef\u8fbe\u6027\u5206\u6790\uff08reachability analysis\uff09\u6807\u8bb0\u6240\u6709\u88ab\u5f15\u7528\u7684\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>\u6e05\u9664\u9636\u6bb5\uff08Sweeping\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>\u5728\u6807\u8bb0\u5b8c\u6210\u540e\uff0cGC\u4f1a\u626b\u63cf\u5806\u4e2d\u7684\u6240\u6709\u5bf9\u8c61\uff0c\u6e05\u7406\u6389\u672a\u88ab\u6807\u8bb0\u7684\u5bf9\u8c61\uff0c\u5373\u90a3\u4e9b\u4e0d\u53ef\u8fbe\u7684\u5bf9\u8c61\u3002\u8fd9\u4e9b\u5bf9\u8c61\u5360\u7528\u7684\u5185\u5b58\u88ab\u91ca\u653e\uff0c\u6210\u4e3a\u53ef\u7528\u7684\u5185\u5b58\u7a7a\u95f4\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>\u538b\u7f29\u9636\u6bb5\uff08Compacting\uff0c\u6709\u65f6\u5019\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>\u5728\u6e05\u9664\u9636\u6bb5\u4e4b\u540e\uff0c\u4e3a\u4e86\u8fdb\u4e00\u6b65\u4f18\u5316\u5185\u5b58\u7684\u4f7f\u7528\uff0c\u6709\u4e9bGC\u7b97\u6cd5\u53ef\u80fd\u4f1a\u6267\u884c\u538b\u7f29\u6b65\u9aa4\uff0c\u5c06\u5b58\u6d3b\u7684\u5bf9\u8c61\u79fb\u52a8\u5230\u5185\u5b58\u7684\u4e00\u7aef\uff0c\u4ee5\u4fbf\u5728\u5806\u7684\u53e6\u4e00\u7aef\u817e\u51fa\u66f4\u5927\u7684\u8fde\u7eed\u7a7a\u95f4\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>GC\u7684\u5de5\u4f5c\u8fc7\u7a0b\u6839\u636e\u4e0d\u540c\u7684\u5783\u573e\u56de\u6536\u7b97\u6cd5\u800c\u6709\u6240\u4e0d\u540c\uff0cJava\u865a\u62df\u673a\u652f\u6301\u591a\u79cd\u5783\u573e\u56de\u6536\u5668\uff0c\u4f8b\u5982Serial 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