![\"image\"](\"https:\/\/img.picgo.net\/2024\/09\/30\/image3853dedf74de3d52.png\")
<\/div> ![\"\u8054\u60f3\u622a\u56fe](\"https:\/\/img.picgo.net\/2024\/09\/30\/_202409301450133f331c7220b3502f.png\")
<\/div><\/p>\n\n\n\n\n\n
\u5806<\/h2>\n\u5806\u7684\u7279\u70b9<\/h3>\n\n- \u7ebf\u7a0b\u5171\u4eab\uff0c\u4e00\u5757\u6700\u5927\u7684\u5185\u5b58\u5b58\u50a8\u533a<\/li>\n
- \u901a\u8fc7new\u521b\u5efa\u7684\u5bf9\u8c61\uff0c\u6570\u7ec4\u548c\u5b57\u7b26\u5e38\u91cf\u6c60\u90fd\u5728\u5806\u4e2d<\/li>\n
- \u9700\u8981\u8003\u8651\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\uff0c\u6709\u5783\u573e\u56de\u6536\u673a\u5236<\/li>\n<\/ul>\n
\u5806\u5185\u5b58\u5206\u914d<\/h3>\n<\/p>\n
![\"image\"](\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\")
<\/div><\/p>\n<\/p>\n\u5806\u5185\u5b58\u6709\u65b0\u751f\u4ee3\u548c\u8001\u5e74\u4ee3\u4e4b\u5206<\/p>\n
\n- \u65b0\u751f\u4ee3\uff1a
\u65b0\u751f\u4ee3\u7531\u4f0a\u7538\u56ed\uff08Eden\uff09\u548c\u4e24\u4e2a\u5e78\u5b58\u8005\u533a\uff08suervior space\uff09\u7ec4\u6210
\u4f0a\u7538\u56ed\u7528\u6765\u5b58\u653e\u65b0\u521b\u5efa\u7684\u5bf9\u8c61
\u5e78\u5b58\u8005\u533a\u662f\u901a\u8fc7 from\u548cto\u533a\u4e0d\u65ad\u4ea4\u6362\u6765\u8fd0\u884c\u7684\uff0c\u4e00\u6b21gc\uff0c\u5e78\u5b58\u5bf9\u8c61\u4f1a\u4ecefrom\u5230to\uff0c\u518d\u4e00\u6b21gc\uff0c\u5e78\u5b58\u5bf9\u8c61\u53c8\u4f1a\u4eceto\u5230from<\/li>\n - \u8001\u5e74\u4ee3\uff1a\u65b0\u751f\u4ee3\u4e2d\u7ecf\u8fc7\u591a\u6b21gc\u4ecd\u7136\u6ca1\u6709\u88ab\u56de\u6536\u7684\u5bf9\u8c61\u548c\u592a\u5927\u7684\u65b0\u751f\u4ee3\u533a\u5b58\u4e0d\u4e0b\u7684\u5bf9\u8c61<\/li>\n<\/ul>\n
\u664b\u5347\u5230\u8001\u5e74\u4ee3\u7684\u65b9\u6cd5<\/h3>\n\n- \u5e74\u9f84\u9608\u503c\uff1a\u5f53\u5bf9\u8c61\u5728 survivor \u533a\u5b58\u6d3b\u4e86 15 \u6b21(\u9ed8\u8ba4)\u4e4b\u540e\uff0c\u4f1a\u88ab\u79fb\u5230\u8001\u5e74\u4ee3\u533a\u3002\u53ef\u4ee5\u901a\u8fc7JVM\u53c2\u6570
-XX:MaxTenuringThreshold \u4fee\u6539\u3002<\/li>\n - \u52a8\u6001\u5bf9\u8c61\u5e74\u9f84\u5224\u5b9a\uff1a\u52a8\u6001\u5bf9\u8c61\u5e74\u9f84\u5224\u5b9a\uff1a\u5f53 Survivor \u7a7a\u95f4\u4e2d\u76f8\u540c\u5e74\u9f84\u6240\u6709\u5bf9\u8c61\u7684\u5927\u5c0f\u603b\u548c\u5927\u4e8e Survivor \u7a7a\u95f4\u7684\u4e00\u534a\uff0c\u5e74\u9f84\u5927\u4e8e\u6216\u7b49\u4e8e\u8be5\u5e74\u9f84\u7684\u5bf9\u8c61\u5c31\u53ef\u4ee5\u76f4\u63a5\u8fdb\u5165\u8001\u5e74\u4ee3\uff0c\u800c\u4e0d\u9700\u8981\u8fbe\u5230\u9ed8\u8ba4\u7684\u5206\u4ee3\u5e74\u9f84\u3002<\/li>\n
- survior\u7a7a\u95f4\u4e0d\u8db3\uff1a\u5f53\u5b58\u6d3b\u4e0b\u6765\u7684\u5bf9\u8c61\u5927\u4e8esurvivor\u533a\u5bb9\u91cf\u7684\u65f6\u5019\uff0c\u4f1a\u88ab\u79fb\u5230\u8001\u5e74\u4ee3\u533a\u3002\n
\u793a\u4f8b\uff1a<\/p>\n
\u5047\u8bbe\u65b0\u751f\u4ee3\u7531100MB\u7684Eden\u7a7a\u95f4\u548c\u4e24\u4e2a50MB\u7684Survivor\u7a7a\u95f4\u7ec4\u6210\uff0c\u8001\u5e74\u4ee3\u6709500MB\u7684\u7a7a\u95f4\u3002
\u521d\u59cb\u60c5\u51b5\u4e0b\uff0c\u6240\u6709\u65b0\u521b\u5efa\u7684\u5bf9\u8c61\u90fd\u5206\u914d\u5728Eden\u7a7a\u95f4\u3002
\u8fdb\u884c\u7b2c\u4e00\u6b21GC\uff0c\u6b64\u65f6Eden\u7a7a\u95f4\u670980MB\u7684\u5bf9\u8c61\uff0c\u88abGC\u540e\u53ea\u670930MB\u7684\u5bf9\u8c61\u5b58\u6d3b\u3002\u8fd9\u4e9b\u5b58\u6d3b\u7684\u5bf9\u8c61\u88ab\u79fb\u52a8\u5230Survivor1\uff0cEden\u88ab\u6e05\u7a7a\u3002
\u518d\u6b21\u5206\u914d\u5bf9\u8c61\uff0cEden\u7a7a\u95f4\u518d\u6b21\u586b\u6ee1\u523080MB\uff0c\u6b64\u65f6Survivor1\u4e2d\u8fd8\u670930MB\u7684\u5b58\u6d3b\u5bf9\u8c61\u3002
\u8fdb\u884c\u7b2c\u4e8c\u6b21GC\uff0cEden\u533a\u768480MB\u5bf9\u8c61\u4e2d\uff0c60MB\u5b58\u6d3b\uff0c\u52a0\u4e0aSurvivor1\u4e2d\u768430MB\u5b58\u6d3b\u5bf9\u8c61\uff0c\u4e00\u5171\u670990MB\u9700\u8981\u88ab\u79fb\u52a8\u5230Survivor2\uff0c\u4f46Survivor2\u53ea\u670950MB\u7684\u5bb9\u91cf\u3002
\u6b64\u65f6\uff0cJVM\u4f1a\u68c0\u67e5Survivor1\u4e2d\u5bf9\u8c61\u7684\u5e74\u9f84\uff0c\u5e76\u5c06\u5e74\u9f84\u5927\u7684\u5bf9\u8c61\u63d0\u524d\u664b\u5347\u5230\u8001\u5e74\u4ee3\uff0c\u5047\u8bbe10MB\u7684\u5bf9\u8c61\u88ab\u664b\u5347\uff0c\u8fd9\u6837\u5269\u4e0b20MB\u7684\u5bf9\u8c61\u4e0eEden\u533a\u768460MB\u5b58\u6d3b\u5bf9\u8c61\u80fd\u591f\u88ab\u79fb\u52a8\u5230Survivor2\u3002
\u5982\u679cSurvivor\u7a7a\u95f4\u4f9d\u65e7\u4e0d\u8db3\u4ee5\u5904\u7406\u8fd960MB\u7684\u5bf9\u8c61\uff0c\u90a3\u4e48\u65e0\u8bba\u5e74\u9f84\u5982\u4f55\uff0c\u90fd\u4f1a\u5c06\u591a\u51fa\u6765\u7684\u90e8\u5206\u63d0\u524d\u664b\u5347\u5230\u8001\u5e74\u4ee3\u3002
GC\u7684\u8fd9\u4e9b\u7ec6\u8282\u5b9e\u9645\u4e0a\u53d6\u51b3\u4e8e\u4f7f\u7528\u7684\u5783\u573e\u6536\u96c6\u5668\u4ee5\u53caJVM\u7684\u914d\u7f6e\u53c2\u6570\uff0c\u4e0d\u540c\u7684\u5783\u573e\u6536\u96c6\u5668\uff08\u5982Serial, Parallel, CMS, G1,
ZGC\u7b49\uff09\u4f1a\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u7ba1\u7406\u8fd9\u4e9b\u533a\u57df\u3002<\/p>\n<\/li>\n<\/ul>\n
\n
\u5806\u5185\u5b58\u68c0\u9a8c\u65b9\u5f0f<\/a><\/h3>\n\n- jmp
jps \u67e5\u770b\u6709\u54ea\u4e9b\u8fdb\u7a0b
jmp -heap[\u8fdb\u7a0bID] \u67e5\u770b\u8fdb\u7a0b\u7684\u5806\u5185\u5b58<\/li>\n - jconsole
\u8fd9\u4e2a\u6307\u4ee4\u53ef\u4ee5\u56fe\u5f62\u67e5\u770b\u7ebf\u7a0b\u5806\u5185\u5b58\u7684\u53d8\u5316\u8fc7\u7a0b<\/li>\n - jvisualvm
\u8fd9\u662fjvm\u7684\u4e00\u4e2a\u76d1\u63a7\u548c\u8c03\u8bd5\u7a0b\u5e8f<\/li>\n<\/ol>\n\n\n
\n\n\n\u865a\u62df\u673a\u6808<\/h2>\n
\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u81ea\u5df1\u7684\u865a\u62df\u673a\u6808\uff0c\u8fd9\u4e2a\u6808\u7528\u4e8e\u5b58\u50a8\u6808\u5e27\u3002\u6bcf\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u8c03\u7528\u4e00\u4e2a\u65b9\u6cd5\u65f6\uff0cJVM\u5c31\u4f1a\u4e3a\u8fd9\u4e2a\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u6808\u5e27\uff0c\u5e76\u4e14\u5c06\u5b83\u538b\u5165\u865a\u62df\u673a\u6808\u4e2d\u3002\u6808\u5e27\u662f\u7528\u6765\u5b58\u50a8\u5c40\u90e8\u53d8\u91cf\u3001\u6267\u884c\u8fd0\u7b97\u8fc7\u7a0b\u4e2d\u7684\u64cd\u4f5c\u6808\u3001\u52a8\u6001\u94fe\u63a5\u4fe1\u606f\u4ee5\u53ca\u65b9\u6cd5\u8fd4\u56de\u5730\u5740\u7b49\u6570\u636e\u3002<\/p>\n
<\/div><\/p>\n<\/p>\n\n- \u7279\u70b9\uff1a
\u7ebf\u7a0b\u79c1\u6709\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u8fd0\u884c\u6240\u9700\u8981\u7684\u5185\u5b58\uff0c\u6210\u4e3a\u865a\u62df\u673a\u6808
\u6bcf\u4e2a\u6808\u7531\u591a\u4e2a\u6808\u5e27\uff08Frame\uff09\u7ec4\u6210\uff0c\u5bf9\u5e94\u7740\u6bcf\u6b21\u65b9\u6cd5\u8c03\u7528\u65f6\u6240\u5360\u7528\u7684\u5185\u5b58
\u6bcf\u4e2a\u7ebf\u7a0b\u53ea\u80fd\u6709\u4e00\u4e2a\u6d3b\u52a8\u6808\u5e27<\/strong>\uff0c\u5bf9\u5e94\u7740\u5f53\u524d\u6b63\u5728\u6267\u884c\u7684\u90a3\u4e2a\u65b9\u6cd5<\/li>\n- \u5c40\u90e8\u53d8\u91cf\u8868
\u7528\u6765\u5b58\u50a8\u65b9\u6cd5\u7684\u53c2\u6570\u548c\u65b9\u6cd5\u5185\u90e8\u5b9a\u4e49\u7684\u5c40\u90e8\u53d8\u91cf\u3002\u8fd9\u4e9b\u6570\u636e\u5305\u62ec\u5404\u79cd\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff08int\u3001float\u3001long\u3001double\u7b49\uff09\u3001\u5bf9\u8c61\u5f15\u7528\u548creturnAddress\u7c7b\u578b\uff08\u6307\u5411\u4e86\u4e00\u6761\u5b57\u8282\u7801\u6307\u4ee4\u7684\u5730\u5740\uff09\u3002<\/li>\n - \u64cd\u4f5c\u6808
\u6bcf\u4e2a\u6808\u5e27\u5185\u90e8\u542b\u6709\u4e00\u4e2a\u64cd\u4f5c\u6570\u6808\uff0c\u901a\u5e38\u4e5f\u53eb\u505a\u64cd\u4f5c\u6808\u3002\u8fd9\u662f\u4e00\u4e2a\u540e\u8fdb\u5148\u51fa\uff08LIFO\uff09\u7684\u6808\uff0c\u7528\u4e8e\u6267\u884c\u65b9\u6cd5\u4e2d\u7684\u5b57\u8282\u7801\u6307\u4ee4\u3002\u64cd\u4f5c\u6570\u6808\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u4f5c\u4e3a\u8ba1\u7b97\u8fc7\u7a0b\u4e2d\u7684\u4e34\u65f6\u5b58\u50a8\u7a7a\u95f4\uff0c\u7528\u4e8e\u5b58\u50a8\u64cd\u4f5c\u6307\u4ee4\u7684\u8f93\u5165\u548c\u8f93\u51fa\u53c2\u6570\u3002<\/strong><\/li>\n- \u52a8\u6001\u94fe\u63a5
\u6bcf\u4e2a\u6808\u5e27\u5185\u90e8\u542b\u6709\u4e00\u4e2a\u6307\u5411\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4e2d\u8be5\u6808\u5e27\u6240\u5c5e\u65b9\u6cd5\u7684\u5f15\u7528\uff0c\u8fd9\u4f7f\u5f97\u5f53\u524d\u65b9\u6cd5\u80fd\u591f\u52a8\u6001\u94fe\u63a5\u5230\u5176\u5b83\u65b9\u6cd5\u548c\u53d8\u91cf\u3002\u7b80\u800c\u8a00\u4e4b\uff0c\u52a8\u6001\u8fde\u63a5\u662f\u6307\u65b9\u6cd5\u5728\u8fd0\u884c\u65f6\u5b9e\u9645\u5f15\u7528\u7684\u5730\u5740\u53ef\u4ee5\u88ab\u66ff\u6362\u6210\u5176\u4ed6\u7684\u65b9\u6cd5\u6216\u53d8\u91cf\u5730\u5740\uff0c\u8fd9\u4e3aJava\u7684\u591a\u6001\u548c\u65b9\u6cd5\u91cd\u8f7d\u63d0\u4f9b\u4e86\u57fa\u7840\u3002<\/strong><\/li>\n- \u65b9\u6cd5\u8fd4\u56de\u5730\u5740
\u5f53\u4e00\u4e2a\u65b9\u6cd5\u5f00\u59cb\u6267\u884c\u540e\uff0c\u5b83\u9700\u8981\u77e5\u9053\u5728\u5b8c\u6210\u6267\u884c\u540e\u8fd4\u56de\u5230\u54ea\u91cc\u3002\u65b9\u6cd5\u8fd4\u56de\u5730\u5740\u5c31\u662f\u4fdd\u5b58\u8fd9\u4e2a\u4fe1\u606f\u7684\u5730\u65b9\uff0c\u5b83\u6307\u5411\u8c03\u7528\u8be5\u65b9\u6cd5\u7684\u4f4d\u7f6e\u7684\u4e0b\u4e00\u6761\u6307\u4ee4\u5730\u5740\u3002<\/li>\n - \u6808\u5185\u5b58\u6ea2\u51fa
\u6808\u5e27\u8fc7\u591a\u5bfc\u81f4\u6808\u5185\u5b58\u6ea2\u51fa\uff08\u5982\u65b9\u6cd5\u9012\u5f52\u8c03\u7528\u6ca1\u6709\u8bbe\u7f6e\u4e0b\u7ebf\uff09
\u6808\u5e27\u8fc7\u5927\u5bfc\u81f4\u6808\u5185\u5b58\u6ea2\u51fa\n\u6808\u5185\u5b58\u81ea\u5df1\u4f1a\u91ca\u653e\uff0c\u6240\u4ee5\u4e0d\u9700\u8981\u5783\u573e\u56de\u6536<\/li>\n<\/ol>\n\n\n
\n\n\n\u7a0b\u5e8f\u8ba1\u6570\u5668<\/h2>\n\n- \u7279\u70b9\uff1a
\u662f\u7ebf\u7a0b\u79c1\u6709\u7684\uff08\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u81ea\u5df1\u7684\u7a0b\u5e8f\u8ba1\u6570\u5668\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u7ebf\u7a0b\u6267\u884c\u5730\u5740\u4e0d\u4e00\u6837\uff09
\u4e0d\u4f1a\u5b58\u5728\u5185\u5b58\u6ea2\u51fa\uff08\u7531jvm\u89c4\u5b9a\u7684\uff09<\/li>\n - \u793a\u4f8b\uff1a\n
public class Example {
public static void main(String[] args) { \/\/ 1
int a = 5; \/\/ 2
int b = 10; \/\/ 3
int c = addNumbers(a, b); \/\/ 4
System.out.println(c); \/\/ 7
}<\/p>\n
public static int addNumbers(int a, int b) {
int result = a + b; \/\/ 5
return result; \/\/ 6
}
}<\/p>\n
\u5728\u4e0a\u9762\u7684\u65b9\u6cd5\u4e2d\uff0c\u7a0b\u5e8f\u8ba1\u7b97\u5668\u6307\u5411\u7684\u5730\u5740\u5206\u522b\u662f1\u52307\uff0c\u4ee3\u7801\u6267\u884c\u7684\u6bcf\u4e00\u6b65\u64cd\u4f5c\u90fd\u4f1a\u88ab\u8bb0\u5f55<\/li>\n<\/ol>\n\n\n
\n\n\n\u672c\u5730\u65b9\u6cd5\u6808<\/h2>\n
\u672c\u5730\u65b9\u6cd5\u6808\u7684\u7ed3\u6784\u4e0e\u865a\u62df\u673a\u6808\u7c7b\u4f3c\uff0c\u4e5f\u662f\u7531\u6808\u5e27\uff08Stack Frame\uff09\u7ec4\u6210\u7684\uff0c\u6808\u5e27\u4e2d\u4fdd\u5b58\u4e86Native\u65b9\u6cd5\u7684\u5c40\u90e8\u53d8\u91cf\u3001\u64cd\u4f5c\u6570\u6808\u3001\u65b9\u6cd5\u51fa\u53e3\u7b49\u4fe1\u606f\u3002\u4e0e\u865a\u62df\u673a\u6808\u4e0d\u540c\u7684\u662f\uff0c\u672c\u5730\u65b9\u6cd5\u6808\u4e2d\u7684\u65b9\u6cd5\u4e0d\u662f\u7528Java\u8bed\u8a00\u7f16\u5199\u7684\uff0c\u800c\u662f\u7528\u5176\u5b83\u8bed\u8a00\u7f16\u5199\u7684\uff0c\u6bd4\u5982C\u3001C++\u7b49\u3002\u56e0\u6b64\uff0c\u672c\u5730\u65b9\u6cd5\u6808\u7684\u7ed3\u6784\u4e0e\u865a\u62df\u673a\u6808\u7c7b\u4f3c\uff0c\u4f46\u662f\u7528\u4e8e\u8c03\u7528\u672c\u5730\u65b9\u6cd5\u3002<\/p>\n
\u8fd9\u91cc\u6709\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u6f14\u793a\u4e86\u4e00\u4e2aJava\u7a0b\u5e8f\u5982\u4f55\u8c03\u7528\u4e00\u4e2a\u4f7f\u7528C\u8bed\u8a00\u7f16\u5199\u7684Native\u65b9\u6cd5\uff1a<\/p>\n
public class NativeExample {
static {
System.loadLibrary(“NativeLibrary”);
}<\/p>\n
public native void nativeMethod();<\/p>\n
public static void main(String[] args) {
NativeExample example = new NativeExample();
example.nativeMethod();
}
}<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cNativeExample\u7c7b\u4e2d\u7684nativeMethod\u65b9\u6cd5\u662f\u4e00\u4e2a\u672c\u5730\u65b9\u6cd5\uff0c\u5b83\u7528native\u5173\u952e\u5b57\u4fee\u9970\uff0c\u8868\u793a\u8fd9\u4e2a\u65b9\u6cd5\u662f\u7528\u5176\u5b83\u8bed\u8a00\u5b9e\u73b0\u7684\u3002\u5728main\u65b9\u6cd5\u4e2d\uff0c\u901a\u8fc7example.nativeMethod()\u8c03\u7528\u4e86\u8fd9\u4e2a\u672c\u5730\u65b9\u6cd5\u3002\u5728\u6267\u884c\u65f6\uff0c\u865a\u62df\u673a\u4f1a\u4f7f\u7528\u672c\u5730\u65b9\u6cd5\u6808\u6765\u6267\u884cnative Method\u65b9\u6cd5\u7684\u76f8\u5173\u64cd\u4f5c\u3002<\/p>\n\n\n
\n\n\n\u65b9\u6cd5\u533a<\/h2>\n
\u65b9\u6cd5\u533a\u5b9e\u73b0\u65b9\u5f0f\uff1a\u6c38\u4e45\u4ee3\u3001\u5143\u7a7a\u95f4<\/p>\n
\u5728\u65e9\u671f\u7684 Java \u7248\u672c\u4e2d\uff0c\u65b9\u6cd5\u533a\u4e0e\u6c38\u4e45\u4ee3\u6709\u7740\u5bc6\u5207\u7684\u5173\u7cfb\u3002\u65b9\u6cd5\u533a\u662f\u4e00\u5757\u7528\u4e8e\u5b58\u50a8\u7c7b\u7684\u76f8\u5173\u4fe1\u606f\u3001\u5e38\u91cf\u3001\u9759\u6001\u53d8\u91cf\u3001\u5373\u65f6\u7f16\u8bd1\u5668\u4f18\u5316\u540e\u7684\u4ee3\u7801\u7b49\u6570\u636e\u7684\u5185\u5b58\u533a\u57df\u3002\u800c\u6c38\u4e45\u4ee3\u662f HotSpot \u865a\u62df\u673a\u4e2d\u7684\u6982\u5ff5\uff0c\u5b83\u5b9e\u9645\u4e0a\u5c31\u662f\u65b9\u6cd5\u533a\u7684\u4e00\u79cd\u5b9e\u73b0\u3002<\/p>\n
\u5728 Java 7 \u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\uff0c\u6c38\u4e45\u4ee3\u7528\u4e8e\u5b58\u50a8\u7c7b\u548c\u65b9\u6cd5\u76f8\u5173\u7684\u4fe1\u606f\uff0c\u5305\u62ec\u7c7b\u7684\u5b57\u8282\u7801\u3001\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u3001\u5b57\u6bb5\u3001\u65b9\u6cd5\u3001\u6784\u9020\u51fd\u6570\u7b49\u3002\u7531\u4e8e\u6c38\u4e45\u4ee3\u7684\u5927\u5c0f\u5728JVM\u542f\u52a8\u65f6\u56fa\u5b9a\uff0c\u5e76\u4e14\u968f\u7740\u5e94\u7528\u7684\u8fd0\u884c\u53ef\u80fd\u4f1a\u51fa\u73b0\u6c38\u4e45\u4ee3\u5185\u5b58\u6ea2\u51fa\u7684\u9519\u8bef\uff08OutOfMemoryError\uff09\uff0c\u5728Java 8\u4e2d\u88ab\u5143\u7a7a\u95f4\u6240\u66ff\u4ee3\u3002<\/p>\n
\u56e0\u6b64\uff0c\u4ece Java 8 \u5f00\u59cb\uff0c\u6c38\u4e45\u4ee3\u9010\u6e10\u88ab\u5143\u7a7a\u95f4\uff08Metaspace\uff09\u6240\u53d6\u4ee3\u3002\u5b83\u4f7f\u7528\u672c\u5730\u5185\u5b58\uff08\u5373\u975eJVM\u5806\u5185\u5b58\uff09<\/strong>\u6765\u5b58\u50a8\u7c7b\u5143\u6570\u636e\u3002\u8fd9\u6837\u7684\u8bbe\u8ba1\u51cf\u5c11\u4e86\u5185\u5b58\u6ea2\u51fa\u7684\u53ef\u80fd\u6027\uff0c\u56e0\u4e3a\u5143\u7a7a\u95f4\u7684\u5927\u5c0f\u4ec5\u53d7\u5230\u7cfb\u7edf\u53ef\u7528\u5185\u5b58\u7684\u9650\u5236\u3002\u5f53\u7136\uff0c\u5143\u7a7a\u95f4\u4e2d\u8fd8\u662f\u6709\u4e00\u4e2a\u521d\u59cb\u5927\u5c0f\uff0c\u5e76\u4e14\u53ef\u4ee5\u8bbe\u7f6e\u4e0a\u9650\uff0c\u4e00\u65e6\u8d85\u8fc7\u8fd9\u4e2a\u4e0a\u9650\uff0c\u4ecd\u7136\u4f1a\u629b\u51faOutOfMemoryError\u5f02\u5e38\u3002\u56e0\u6b64\uff0c\u65b9\u6cd5\u533a\u4e0e\u6c38\u4e45\u4ee3\u4e4b\u95f4\u7684\u5173\u7cfb\u5728 Java 8 \u53ca\u4ee5\u540e\u7684\u7248\u672c\u4e2d\u5df2\u7ecf\u4e0d\u518d\u5b58\u5728\u3002<\/p>\n<\/p>\n<\/div><\/p>\n\u5143\u7a7a\u95f4\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n
\u7c7b\u7684\u5143\u6570\u636e\u4fe1\u606f\uff1a\u5305\u62ec\u7c7b\u7684\u540d\u79f0\u3001\u65b9\u6cd5\u540d\u3001\u8bbf\u95ee\u4fee\u9970\u7b26\u3001\u5b57\u6bb5\u63cf\u8ff0\u7b26\u7b49\u3002
\u9759\u6001\u53d8\u91cf\uff1a\u7c7b\u7684\u9759\u6001\u53d8\u91cf\u5b58\u653e\u5728\u5143\u7a7a\u95f4\u4e2d\u3002
\u5e38\u91cf\u6c60\uff1a\u5176\u4e2d\u5b58\u653e\u7740\u5b57\u7b26\u4e32\u5e38\u91cf\u3001\u5b57\u9762\u91cf\u548c\u7b26\u53f7\u5f15\u7528\u3002
\u65b9\u6cd5\u533a\u7684\u5bf9\u8c61\u4e0d\u4f1a\u88abJava\u5806\u4e2d\u7684\u5783\u573e\u56de\u6536\u5668\u4ee5\u76f8\u540c\u7684\u65b9\u5f0f\u56de\u6536\uff0c\u5b83\u6709\u81ea\u5df1\u7684\u5185\u5b58\u7ba1\u7406\u7cfb\u7edf\uff08\u5728\u4f7f\u7528\u5143\u7a7a\u95f4\u7684\u60c5\u51b5\u4e0b\uff0c\u5185\u5b58\u53ef\u4ee5\u4ece\u64cd\u4f5c\u7cfb\u7edf\u76f4\u63a5\u83b7\u53d6\uff09\u3002<\/p>\n
\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u6bb5\u7b80\u5355\u7684Java\u4ee3\u7801\uff0c\u8bf4\u660e\u65b9\u6cd5\u533a\u4e2d\u67d0\u4e9b\u90e8\u5206\u662f\u5982\u4f55\u88ab\u4f7f\u7528\u7684\uff1a<\/p>\n
public class ExampleClass {
\/\/ \u5e38\u91cf\u6c60\u4e2d\u7684\u5185\u5bb9
private final static String CONSTANT_STRING = “Hello, World!”;<\/p>\n
\/\/ \u65b9\u6cd5\u533a\u4e2d\u9759\u6001\u53d8\u91cf
private static int counter = 0;<\/p>\n
\/\/ \u7c7b\u578b\u4fe1\u606f\u548c\u65b9\u6cd5\u4ee3\u7801
public static void increment() {
counter++;
}<\/p>\n
public static void main(String[] args) {
ExampleClass.increment();
System.out.println(CONSTANT_STRING);
}
}<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff1a<\/p>\n
\u5b57\u7b26\u4e32”Hello, World!”\u4f1a\u88ab\u5b58\u50a8\u5728\u5e38\u91cf\u6c60\u4e2d\u3002
\u9759\u6001\u53d8\u91cfcounter\u4f1a\u88ab\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\u3002
\u7c7bExampleClass\u7684\u7c7b\u578b\u4fe1\u606f\uff08\u6bd4\u5982\u5b83\u7684\u65b9\u6cd5\u548c\u5b57\u6bb5\uff09\u4e5f\u4f1a\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\u3002
increment\u65b9\u6cd5\u548cmain\u65b9\u6cd5\u7684\u4ee3\u7801\uff0c\u5728\u88ab\u5373\u65f6\u7f16\u8bd1\u5668\u7f16\u8bd1\u4e4b\u540e\uff0c\u7f16\u8bd1\u540e\u7684\u673a\u5668\u7801\u4e5f\u4f1a\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\u3002<\/p>\n
\u5f53Java\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0cJVM\u4f1a\u52a0\u8f7dExampleClass\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u4f1a\u5c06ExampleClass\u7684\u7c7b\u578b\u4fe1\u606f\u3001\u5e38\u91cf\u6c60\u4e2d\u7684\u5e38\u91cf\u3001increment\u548cmain\u65b9\u6cd5\u7684\u5b57\u8282\u7801\u7b49\u6570\u636e\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\uff0c\u9759\u6001\u53d8\u91cfcounter\u540c\u6837\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\u5185\uff0c\u4f46\u5177\u4f53\u662f\u5728\u6c38\u4e45\u4ee3\u8fd8\u662f\u5143\u7a7a\u95f4\u5219\u53d6\u51b3\u4e8eJVM\u7684\u7248\u672c\u53ca\u914d\u7f6e\u3002\u5728Java 8\u53ca\u4e4b\u540e\u7248\u672c\uff0c\u8fd9\u90e8\u5206\u6570\u636e\u4f1a\u5b58\u50a8\u5728\u64cd\u4f5c\u7cfb\u7edf\u7684\u672c\u5730\u5185\u5b58\u4e2d\uff0c\u79f0\u4f5c\u5143\u7a7a\u95f4\u3002<\/p>\n<\/p>\n\n\n
\n\n\n\u65b9\u6cd5\u6808\u548c\u672c\u5730\u65b9\u6cd5\u6808\u7684\u533a\u522b<\/h2>\n
\u65b9\u6cd5\u6808\uff08Method stack\uff09\uff1a<\/strong><\/p>\n\u65b9\u6cd5\u6808\u5b58\u50a8\u7684\u662f Java \u65b9\u6cd5\u7684\u8c03\u7528\u4fe1\u606f\u3002\u6bcf\u5f53\u4e00\u4e2a\u65b9\u6cd5\u88ab\u8c03\u7528\u65f6\uff0cJVM\u90fd\u4f1a\u5728\u65b9\u6cd5\u6808\u4e2d\u5206\u914d\u4e00\u4e2a\u6808\u5e27\uff08Stack Frame\uff09\uff0c\u7528\u4e8e\u5b58\u50a8\u8be5\u65b9\u6cd5\u7684\u8c03\u7528\u4fe1\u606f\u3002
\u65b9\u6cd5\u6808\u4e2d\u7684\u6808\u5e27\u4f1a\u968f\u7740\u65b9\u6cd5\u7684\u8c03\u7528\u548c\u8fd4\u56de\u800c\u52a8\u6001\u5730\u88ab\u521b\u5efa\u548c\u9500\u6bc1\uff0c\u65b9\u6cd5\u6808\u7684\u6808\u5e27\u4e5f\u5305\u62ec\u4e86\u65b9\u6cd5\u7684\u53c2\u6570\u3001\u5c40\u90e8\u53d8\u91cf\u4ee5\u53ca\u7528\u4e8e\u8fd4\u56de\u7684\u6307\u4ee4\u5730\u5740\u7b49\u4fe1\u606f\u3002
\u672c\u5730\u65b9\u6cd5\u6808\uff08Native method stack\uff09\uff1a<\/strong><\/p>\n\u672c\u5730\u65b9\u6cd5\u6808\u5219\u662f\u7528\u4e8e\u6267\u884c\u672c\u5730\uff08Native\uff09\u65b9\u6cd5\u7684\u6808\uff0c\u5373\u4f7f\u7528\u672c\u5730\u8bed\u8a00\uff08\u5982 C \u6216 C++\uff09\u7f16\u5199\u7684\u65b9\u6cd5\u3002\u5b83\u4e0e\u65b9\u6cd5\u6808\u7c7b\u4f3c\uff0c\u4f46\u662f\u7528\u4e8e\u6267\u884c\u672c\u5730\u65b9\u6cd5\u3002
\u672c\u5730\u65b9\u6cd5\u6808\u4e5f\u4f1a\u4e3a\u6bcf\u4e2a\u672c\u5730\u65b9\u6cd5\u5206\u914d\u4e00\u4e2a\u6808\u5e27\uff0c\u7528\u4e8e\u5b58\u50a8\u672c\u5730\u65b9\u6cd5\u7684\u8c03\u7528\u4fe1\u606f\u3002<\/p>\n\n\n
\n\n\n\u8fd0\u884c\u65f6\u5e38\u91cf\u503c\u548c\u5b57\u7b26\u4e32\u5e38\u91cf\u503c\u7684\u533a\u522b<\/h2>\n\n- \u5b58\u50a8\u4f4d\u7f6e\uff1a\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\uff08\u5143\u7a7a\u95f4\uff09\u4e2d\uff0c\u800c\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u5728 JDK 8 \u65f6\u5b58\u50a8\u5728\u5806\u4e2d\u3002
\u4f5c\u7528\uff1a\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4e3b\u8981\u5b58\u50a8\u7f16\u8bd1\u671f\u95f4\u751f\u6210\u7684\u5b57\u9762\u91cf\u3001\u7b26\u53f7\u5f15\u7528\u7b49\uff0c\u800c\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u5219\u7528\u4e8e\u5b58\u50a8\u5b57\u7b26\u4e32\u5bf9\u8c61\u5b9e\u4f8b\u7684\u5f15\u7528\u3002
\u52a8\u6001\u6027\uff1a\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u5728\u8fd0\u884c\u671f\u95f4\u53ef\u4ee5\u52a8\u6001\u5730\u653e\u5165\u65b0\u7684\u5e38\u91cf\uff0c\u800c\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u5219\u76f8\u5bf9\u8f83\u4e3a\u56fa\u5b9a\u3002
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5177\u4f53\u7684\u793a\u4f8b\u6765\u8bf4\u660e\u5b83\u4eec\u7684\u533a\u522b\uff1a<\/li>\n - \u5047\u8bbe\u6709\u4e00\u4e2a\u7c7b MyClass\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u5b57\u7b26\u4e32\u5e38\u91cf STRING_CONSTANT\u3002
\u5728\u7f16\u8bd1\u9636\u6bb5\uff0cSTRING_CONSTANT \u4f1a\u88ab\u5b58\u50a8\u5728 class \u6587\u4ef6\u7684\u5e38\u91cf\u6c60\u4e2d\u3002\u5f53\u7c7b\u52a0\u8f7d\u5668\u52a0\u8f7d MyClass \u7c7b\u65f6\uff0c\u5e38\u91cf\u6c60\u4e2d\u7684\u5185\u5bb9\u4f1a\u88ab\u590d\u5236\u5230\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4e2d\u3002<\/li>\n - \u5728\u8fd0\u884c\u65f6\uff0c\u5982\u679c\u521b\u5efa\u4e86\u4e00\u4e2a MyClass \u7684\u5b9e\u4f8b\uff0c\u5e76\u8c03\u7528\u4e86 STRING_CONSTANT\uff0c\u90a3\u4e48\u865a\u62df\u673a\u9996\u5148\u4f1a\u5728\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4e2d\u67e5\u627e\u8be5\u5b57\u7b26\u4e32\u7684\u5f15\u7528\u3002\u5982\u679c\u627e\u5230\u4e86\uff0c\u5c31\u76f4\u63a5\u4f7f\u7528\u8be5\u5f15\u7528\uff1b\u5982\u679c\u6ca1\u6709\u627e\u5230\uff0c\u5c31\u4f1a\u5728\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b57\u7b26\u4e32\u5bf9\u8c61\uff0c\u5e76\u5c06\u5176\u5f15\u7528\u5b58\u50a8\u5728\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4e2d\u3002<\/li>\n<\/ul>\n\n\n
\n\n\n\u603b\u7ed3<\/h2>\n\n- \u7a0b\u5e8f\u8ba1\u6570\u5668\uff1a\u5b58\u50a8jvm\u6307\u4ee4\u7684\u6267\u884c\u5730\u5740\uff0c\u4e0d\u4f1a\u5185\u5b58\u6ea2\u51fa<\/li>\n
- \u865a\u62df\u673a\u6808\uff1a\u6bcf\u4e2a\u7ebf\u7a0b\u8fd0\u884c\u65f6\u6240\u9700\u8981\u7684\u5185\u5b58\uff0c\u6bcf\u4e2a\u6808\u7531\u591a\u4e2a\u6808\u5e27\u7ec4\u6210\uff0c\u5bf9\u5e94\u7740\u6bcf\u6b21\u65b9\u6cd5\u8c03\u7528\u65f6\u6240\u5360\u7528\u7684\u5185\u5b58\uff0c \u6bcf\u4e2a\u7ebf\u7a0b\u53ea\u80fd\u6709\u4e00\u4e2a\u6d3b\u52a8\u6808\u5e27\uff0c\u5bf9\u5e94\u7740\u5f53\u524d\u6b63\u5728\u6267\u884c\u7684\u90a3\u4e2a\u65b9\u6cd5<\/li>\n
- \u672c\u5730\u65b9\u6cd5\u6808\uff1a\u5b58\u50a8\u975ejava\u4ee3\u7801\u7f16\u5199\u7684\u672c\u5730\u65b9\u6cd5<\/li>\n
- \u5806\uff1a\u901a\u8fc7 new \u5173\u952e\u5b57\uff0c\u521b\u5efa\u5bf9\u8c61\u90fd\u4f1a\u4f7f\u7528\u5806\u5185\u5b58\u3002\u540c\u65f6\u5305\u542b\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u548c\u6570\u7ec4\u3002<\/li>\n
- \u65b9\u6cd5\u533a\uff1a\u5b83\u5b58\u50a8\u6bcf\u4e2a\u7c7b\u7684\u7ed3\u6784,\u5982\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60,\u5b57\u6bb5\u548c\u65b9\u6cd5\u6570\u636e,\u4ee5\u53ca\u65b9\u6cd5\u548c\u6784\u9020\u51fd\u6570\u7684\u4ee3\u7801,\u5305\u62ec\u5728\u7c7b\u548c\u5b9e\u4f8b\u521d\u59cb\u5316\u4ee5\u53ca\u63a5\u53e3\u521d\u59cb\u5316\u4e2d\u4f7f\u7528\u7684\u7279\u6b8a\u65b9\u6cd5<\/li>\n
- \u5171\u540c\u7279\u70b9\uff1a\u7a0b\u5e8f\u8ba1\u6570\u5668\u3001\u6808\u662f\u7ebf\u7a0b\u79c1\u6709\uff1b\u65b9\u6cd5\u533a\u3001\u5806\u662f\u7ebf\u7a0b\u5171\u4eab\u3002
\u7a0b\u5e8f\u8ba1\u6570\u5668\u4e0d\u4f1a\u5185\u5b58\u6ea2\u51fa\uff0c\u5176\u4ed6\u90fd\u4f1a\u3002<\/li>\n<\/ul>\n\n\n
\n\n\nJVM\u5e38\u7528\u8c03\u4f18\u53c2\u6570<\/h2>\n
\u9488\u5bf9Java\u865a\u62df\u673a\uff08JVM\uff09\u7684\u6027\u80fd\u8c03\u4f18\uff0c\u6709\u4e00\u4e9b\u5e38\u89c1\u7684\u8c03\u4f18\u53c2\u6570\u53ef\u4ee5\u7528\u6765\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684JVM\u8c03\u4f18\u53c2\u6570\uff1a<\/p>\n
\u5806\u5185\u5b58\u8bbe\u7f6e<\/h3>\n
-Xms\uff1a\u8bbe\u7f6eJVM\u521d\u59cb\u5806\u5927\u5c0f
-Xmx\uff1a\u8bbe\u7f6eJVM\u6700\u5927\u5806\u5927\u5c0f
-Xmn\uff1a\u8bbe\u7f6e\u65b0\u751f\u4ee3\u5927\u5c0f<\/p>\n
\u5783\u573e\u56de\u6536\u5668\u9009\u62e9<\/h3>\n
-XX:+UseSerialGC\uff1a\u4f7f\u7528\u4e32\u884c\u5783\u573e\u56de\u6536\u5668
-XX:+UseParallelGC\uff1a\u4f7f\u7528\u5e76\u884c\u5783\u573e\u56de\u6536\u5668
-XX:+UseConcMarkSweepGC\uff1a\u4f7f\u7528CMS\u5783\u573e\u56de\u6536\u5668
-XX:+UseG1GC\uff1a\u4f7f\u7528G1\u5783\u573e\u56de\u6536\u5668<\/p>\n
\u5783\u573e\u56de\u6536\u76f8\u5173\u53c2\u6570<\/h3>\n
-XX:NewRatio\uff1a\u8bbe\u7f6e\u65b0\u751f\u4ee3\u4e0e\u8001\u5e74\u4ee3\u7684\u6bd4\u4f8b
-XX:SurvivorRatio\uff1a\u8bbe\u7f6eEden\u533a\u4e0eSurvivor\u533a\u7684\u6bd4\u4f8b
-XX:MaxTenuringThreshold\uff1a\u8bbe\u7f6e\u5bf9\u8c61\u8fdb\u5165\u8001\u5e74\u4ee3\u7684\u5e74\u9f84\u9608\u503c<\/p>\n
\u5143\u7a7a\u95f4\uff08Metaspace\uff09\u8bbe\u7f6e<\/h3>\n
-XX:MaxMetaspaceSize\uff1a\u8bbe\u7f6e\u5143\u7a7a\u95f4\u6700\u5927\u5927\u5c0f
-XX:MetaspaceSize\uff1a\u8bbe\u7f6e\u5143\u7a7a\u95f4\u521d\u59cb\u5927\u5c0f<\/p>\n
\u5e76\u53d1\u6807\u8bb0<\/h3>\n
-XX:+UseConcMarkSweepGC\uff1a\u542f\u7528CMS\u5783\u573e\u56de\u6536\u5668
-XX:+UseG1GC\uff1a\u542f\u7528G1\u5783\u573e\u56de\u6536\u5668<\/p>\n
\u7ebf\u7a0b\u5806\u6808\u5927\u5c0f<\/h3>\n
-Xss\uff1a\u8bbe\u7f6e\u6bcf\u4e2a\u7ebf\u7a0b\u7684\u5806\u6808\u5927\u5c0f<\/p>\n
\u6027\u80fd\u76d1\u63a7\u53c2\u6570<\/h3>\n
-XX:+HeapDumpOnOutOfMemoryError \uff1aOOM\u65f6\u81ea\u52a8\u6253\u5370\u5806\u8f6c\u50a8\u6587\u4ef6<\/p>\n
-XX:HeapDumpPath\uff1a \u5b58\u50a8\u6587\u4ef6\u5730\u5740<\/p>\n
-XX:+PrintGCDetails\uff1a\u8f93\u51faGC\u7684\u8be6\u7ec6\u65e5\u5fd7<\/p>\n
-XX:+PrintGCTimeStamps\uff1a\u8f93\u51faGC\u53d1\u751f\u7684\u65f6\u95f4\u6233<\/p>\n
JVM\u8c03\u4f18\u5b9e\u4f8b\u6f14\u793a<\/h3>\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
JVM\u5185\u5b58\u7ed3\u6784 \u5806 \u5806\u7684\u7279\u70b9 \u7ebf\u7a0b\u5171\u4eab\uff0c\u4e00\u5757\u6700\u5927\u7684\u5185\u5b58\u5b58\u50a8\u533a \u901a\u8fc7new\u521b\u5efa\u7684\u5bf9\u8c61\uff0c\u6570\u7ec4\u548c\u5b57\u7b26\u5e38\u91cf\u6c60\u90fd\u5728\u5806\u4e2d […]<\/p>\n","protected":false},"author":1,"featured_media":257,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[6],"class_list":["post-256","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-jvm"],"_links":{"self":[{"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/posts\/256","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/comments?post=256"}],"version-history":[{"count":4,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/posts\/256\/revisions"}],"predecessor-version":[{"id":288,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/posts\/256\/revisions\/288"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/media\/257"}],"wp:attachment":[{"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/media?parent=256"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/categories?post=256"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/tags?post=256"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- \n
- \u7ebf\u7a0b\u5171\u4eab\uff0c\u4e00\u5757\u6700\u5927\u7684\u5185\u5b58\u5b58\u50a8\u533a<\/li>\n
- \u901a\u8fc7new\u521b\u5efa\u7684\u5bf9\u8c61\uff0c\u6570\u7ec4\u548c\u5b57\u7b26\u5e38\u91cf\u6c60\u90fd\u5728\u5806\u4e2d<\/li>\n
- \u9700\u8981\u8003\u8651\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\uff0c\u6709\u5783\u573e\u56de\u6536\u673a\u5236<\/li>\n<\/ul>\n
\u5806\u5185\u5b58\u5206\u914d<\/h3>\n<\/p>\n
<\/div><\/p>\n<\/p>\n\u5806\u5185\u5b58\u6709\u65b0\u751f\u4ee3\u548c\u8001\u5e74\u4ee3\u4e4b\u5206<\/p>\n
- \n
- \u65b0\u751f\u4ee3\uff1a
\u65b0\u751f\u4ee3\u7531\u4f0a\u7538\u56ed\uff08Eden\uff09\u548c\u4e24\u4e2a\u5e78\u5b58\u8005\u533a\uff08suervior space\uff09\u7ec4\u6210
\u4f0a\u7538\u56ed\u7528\u6765\u5b58\u653e\u65b0\u521b\u5efa\u7684\u5bf9\u8c61
\u5e78\u5b58\u8005\u533a\u662f\u901a\u8fc7 from\u548cto\u533a\u4e0d\u65ad\u4ea4\u6362\u6765\u8fd0\u884c\u7684\uff0c\u4e00\u6b21gc\uff0c\u5e78\u5b58\u5bf9\u8c61\u4f1a\u4ecefrom\u5230to\uff0c\u518d\u4e00\u6b21gc\uff0c\u5e78\u5b58\u5bf9\u8c61\u53c8\u4f1a\u4eceto\u5230from<\/li>\n - \u8001\u5e74\u4ee3\uff1a\u65b0\u751f\u4ee3\u4e2d\u7ecf\u8fc7\u591a\u6b21gc\u4ecd\u7136\u6ca1\u6709\u88ab\u56de\u6536\u7684\u5bf9\u8c61\u548c\u592a\u5927\u7684\u65b0\u751f\u4ee3\u533a\u5b58\u4e0d\u4e0b\u7684\u5bf9\u8c61<\/li>\n<\/ul>\n
\u664b\u5347\u5230\u8001\u5e74\u4ee3\u7684\u65b9\u6cd5<\/h3>\n
- \n
- \u5e74\u9f84\u9608\u503c\uff1a\u5f53\u5bf9\u8c61\u5728 survivor \u533a\u5b58\u6d3b\u4e86 15 \u6b21(\u9ed8\u8ba4)\u4e4b\u540e\uff0c\u4f1a\u88ab\u79fb\u5230\u8001\u5e74\u4ee3\u533a\u3002\u53ef\u4ee5\u901a\u8fc7JVM\u53c2\u6570
-XX:MaxTenuringThreshold \u4fee\u6539\u3002<\/li>\n - \u52a8\u6001\u5bf9\u8c61\u5e74\u9f84\u5224\u5b9a\uff1a\u52a8\u6001\u5bf9\u8c61\u5e74\u9f84\u5224\u5b9a\uff1a\u5f53 Survivor \u7a7a\u95f4\u4e2d\u76f8\u540c\u5e74\u9f84\u6240\u6709\u5bf9\u8c61\u7684\u5927\u5c0f\u603b\u548c\u5927\u4e8e Survivor \u7a7a\u95f4\u7684\u4e00\u534a\uff0c\u5e74\u9f84\u5927\u4e8e\u6216\u7b49\u4e8e\u8be5\u5e74\u9f84\u7684\u5bf9\u8c61\u5c31\u53ef\u4ee5\u76f4\u63a5\u8fdb\u5165\u8001\u5e74\u4ee3\uff0c\u800c\u4e0d\u9700\u8981\u8fbe\u5230\u9ed8\u8ba4\u7684\u5206\u4ee3\u5e74\u9f84\u3002<\/li>\n
- survior\u7a7a\u95f4\u4e0d\u8db3\uff1a\u5f53\u5b58\u6d3b\u4e0b\u6765\u7684\u5bf9\u8c61\u5927\u4e8esurvivor\u533a\u5bb9\u91cf\u7684\u65f6\u5019\uff0c\u4f1a\u88ab\u79fb\u5230\u8001\u5e74\u4ee3\u533a\u3002\n
\u793a\u4f8b\uff1a<\/p>\n
\u5047\u8bbe\u65b0\u751f\u4ee3\u7531100MB\u7684Eden\u7a7a\u95f4\u548c\u4e24\u4e2a50MB\u7684Survivor\u7a7a\u95f4\u7ec4\u6210\uff0c\u8001\u5e74\u4ee3\u6709500MB\u7684\u7a7a\u95f4\u3002
\u521d\u59cb\u60c5\u51b5\u4e0b\uff0c\u6240\u6709\u65b0\u521b\u5efa\u7684\u5bf9\u8c61\u90fd\u5206\u914d\u5728Eden\u7a7a\u95f4\u3002
\u8fdb\u884c\u7b2c\u4e00\u6b21GC\uff0c\u6b64\u65f6Eden\u7a7a\u95f4\u670980MB\u7684\u5bf9\u8c61\uff0c\u88abGC\u540e\u53ea\u670930MB\u7684\u5bf9\u8c61\u5b58\u6d3b\u3002\u8fd9\u4e9b\u5b58\u6d3b\u7684\u5bf9\u8c61\u88ab\u79fb\u52a8\u5230Survivor1\uff0cEden\u88ab\u6e05\u7a7a\u3002
\u518d\u6b21\u5206\u914d\u5bf9\u8c61\uff0cEden\u7a7a\u95f4\u518d\u6b21\u586b\u6ee1\u523080MB\uff0c\u6b64\u65f6Survivor1\u4e2d\u8fd8\u670930MB\u7684\u5b58\u6d3b\u5bf9\u8c61\u3002
\u8fdb\u884c\u7b2c\u4e8c\u6b21GC\uff0cEden\u533a\u768480MB\u5bf9\u8c61\u4e2d\uff0c60MB\u5b58\u6d3b\uff0c\u52a0\u4e0aSurvivor1\u4e2d\u768430MB\u5b58\u6d3b\u5bf9\u8c61\uff0c\u4e00\u5171\u670990MB\u9700\u8981\u88ab\u79fb\u52a8\u5230Survivor2\uff0c\u4f46Survivor2\u53ea\u670950MB\u7684\u5bb9\u91cf\u3002
\u6b64\u65f6\uff0cJVM\u4f1a\u68c0\u67e5Survivor1\u4e2d\u5bf9\u8c61\u7684\u5e74\u9f84\uff0c\u5e76\u5c06\u5e74\u9f84\u5927\u7684\u5bf9\u8c61\u63d0\u524d\u664b\u5347\u5230\u8001\u5e74\u4ee3\uff0c\u5047\u8bbe10MB\u7684\u5bf9\u8c61\u88ab\u664b\u5347\uff0c\u8fd9\u6837\u5269\u4e0b20MB\u7684\u5bf9\u8c61\u4e0eEden\u533a\u768460MB\u5b58\u6d3b\u5bf9\u8c61\u80fd\u591f\u88ab\u79fb\u52a8\u5230Survivor2\u3002
\u5982\u679cSurvivor\u7a7a\u95f4\u4f9d\u65e7\u4e0d\u8db3\u4ee5\u5904\u7406\u8fd960MB\u7684\u5bf9\u8c61\uff0c\u90a3\u4e48\u65e0\u8bba\u5e74\u9f84\u5982\u4f55\uff0c\u90fd\u4f1a\u5c06\u591a\u51fa\u6765\u7684\u90e8\u5206\u63d0\u524d\u664b\u5347\u5230\u8001\u5e74\u4ee3\u3002
GC\u7684\u8fd9\u4e9b\u7ec6\u8282\u5b9e\u9645\u4e0a\u53d6\u51b3\u4e8e\u4f7f\u7528\u7684\u5783\u573e\u6536\u96c6\u5668\u4ee5\u53caJVM\u7684\u914d\u7f6e\u53c2\u6570\uff0c\u4e0d\u540c\u7684\u5783\u573e\u6536\u96c6\u5668\uff08\u5982Serial, Parallel, CMS, G1,
ZGC\u7b49\uff09\u4f1a\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u7ba1\u7406\u8fd9\u4e9b\u533a\u57df\u3002<\/p>\n<\/li>\n<\/ul>\n\n
\u5806\u5185\u5b58\u68c0\u9a8c\u65b9\u5f0f<\/a><\/h3>\n
- \n
- jmp
jps \u67e5\u770b\u6709\u54ea\u4e9b\u8fdb\u7a0b
jmp -heap[\u8fdb\u7a0bID] \u67e5\u770b\u8fdb\u7a0b\u7684\u5806\u5185\u5b58<\/li>\n - jconsole
\u8fd9\u4e2a\u6307\u4ee4\u53ef\u4ee5\u56fe\u5f62\u67e5\u770b\u7ebf\u7a0b\u5806\u5185\u5b58\u7684\u53d8\u5316\u8fc7\u7a0b<\/li>\n - jvisualvm
\u8fd9\u662fjvm\u7684\u4e00\u4e2a\u76d1\u63a7\u548c\u8c03\u8bd5\u7a0b\u5e8f<\/li>\n<\/ol>\n\n\n
\n\n\n\u865a\u62df\u673a\u6808<\/h2>\n
\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u81ea\u5df1\u7684\u865a\u62df\u673a\u6808\uff0c\u8fd9\u4e2a\u6808\u7528\u4e8e\u5b58\u50a8\u6808\u5e27\u3002\u6bcf\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u8c03\u7528\u4e00\u4e2a\u65b9\u6cd5\u65f6\uff0cJVM\u5c31\u4f1a\u4e3a\u8fd9\u4e2a\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u6808\u5e27\uff0c\u5e76\u4e14\u5c06\u5b83\u538b\u5165\u865a\u62df\u673a\u6808\u4e2d\u3002\u6808\u5e27\u662f\u7528\u6765\u5b58\u50a8\u5c40\u90e8\u53d8\u91cf\u3001\u6267\u884c\u8fd0\u7b97\u8fc7\u7a0b\u4e2d\u7684\u64cd\u4f5c\u6808\u3001\u52a8\u6001\u94fe\u63a5\u4fe1\u606f\u4ee5\u53ca\u65b9\u6cd5\u8fd4\u56de\u5730\u5740\u7b49\u6570\u636e\u3002<\/p>\n
<\/div><\/p>\n<\/p>\n- \n
- \u7279\u70b9\uff1a
\u7ebf\u7a0b\u79c1\u6709\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u8fd0\u884c\u6240\u9700\u8981\u7684\u5185\u5b58\uff0c\u6210\u4e3a\u865a\u62df\u673a\u6808
\u6bcf\u4e2a\u6808\u7531\u591a\u4e2a\u6808\u5e27\uff08Frame\uff09\u7ec4\u6210\uff0c\u5bf9\u5e94\u7740\u6bcf\u6b21\u65b9\u6cd5\u8c03\u7528\u65f6\u6240\u5360\u7528\u7684\u5185\u5b58
\u6bcf\u4e2a\u7ebf\u7a0b\u53ea\u80fd\u6709\u4e00\u4e2a\u6d3b\u52a8\u6808\u5e27<\/strong>\uff0c\u5bf9\u5e94\u7740\u5f53\u524d\u6b63\u5728\u6267\u884c\u7684\u90a3\u4e2a\u65b9\u6cd5<\/li>\n- \u5c40\u90e8\u53d8\u91cf\u8868
\u7528\u6765\u5b58\u50a8\u65b9\u6cd5\u7684\u53c2\u6570\u548c\u65b9\u6cd5\u5185\u90e8\u5b9a\u4e49\u7684\u5c40\u90e8\u53d8\u91cf\u3002\u8fd9\u4e9b\u6570\u636e\u5305\u62ec\u5404\u79cd\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff08int\u3001float\u3001long\u3001double\u7b49\uff09\u3001\u5bf9\u8c61\u5f15\u7528\u548creturnAddress\u7c7b\u578b\uff08\u6307\u5411\u4e86\u4e00\u6761\u5b57\u8282\u7801\u6307\u4ee4\u7684\u5730\u5740\uff09\u3002<\/li>\n- \u64cd\u4f5c\u6808
\u6bcf\u4e2a\u6808\u5e27\u5185\u90e8\u542b\u6709\u4e00\u4e2a\u64cd\u4f5c\u6570\u6808\uff0c\u901a\u5e38\u4e5f\u53eb\u505a\u64cd\u4f5c\u6808\u3002\u8fd9\u662f\u4e00\u4e2a\u540e\u8fdb\u5148\u51fa\uff08LIFO\uff09\u7684\u6808\uff0c\u7528\u4e8e\u6267\u884c\u65b9\u6cd5\u4e2d\u7684\u5b57\u8282\u7801\u6307\u4ee4\u3002\u64cd\u4f5c\u6570\u6808\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u4f5c\u4e3a\u8ba1\u7b97\u8fc7\u7a0b\u4e2d\u7684\u4e34\u65f6\u5b58\u50a8\u7a7a\u95f4\uff0c\u7528\u4e8e\u5b58\u50a8\u64cd\u4f5c\u6307\u4ee4\u7684\u8f93\u5165\u548c\u8f93\u51fa\u53c2\u6570\u3002<\/strong><\/li>\n- \u52a8\u6001\u94fe\u63a5
\u6bcf\u4e2a\u6808\u5e27\u5185\u90e8\u542b\u6709\u4e00\u4e2a\u6307\u5411\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4e2d\u8be5\u6808\u5e27\u6240\u5c5e\u65b9\u6cd5\u7684\u5f15\u7528\uff0c\u8fd9\u4f7f\u5f97\u5f53\u524d\u65b9\u6cd5\u80fd\u591f\u52a8\u6001\u94fe\u63a5\u5230\u5176\u5b83\u65b9\u6cd5\u548c\u53d8\u91cf\u3002\u7b80\u800c\u8a00\u4e4b\uff0c\u52a8\u6001\u8fde\u63a5\u662f\u6307\u65b9\u6cd5\u5728\u8fd0\u884c\u65f6\u5b9e\u9645\u5f15\u7528\u7684\u5730\u5740\u53ef\u4ee5\u88ab\u66ff\u6362\u6210\u5176\u4ed6\u7684\u65b9\u6cd5\u6216\u53d8\u91cf\u5730\u5740\uff0c\u8fd9\u4e3aJava\u7684\u591a\u6001\u548c\u65b9\u6cd5\u91cd\u8f7d\u63d0\u4f9b\u4e86\u57fa\u7840\u3002<\/strong><\/li>\n- \u65b9\u6cd5\u8fd4\u56de\u5730\u5740
\u5f53\u4e00\u4e2a\u65b9\u6cd5\u5f00\u59cb\u6267\u884c\u540e\uff0c\u5b83\u9700\u8981\u77e5\u9053\u5728\u5b8c\u6210\u6267\u884c\u540e\u8fd4\u56de\u5230\u54ea\u91cc\u3002\u65b9\u6cd5\u8fd4\u56de\u5730\u5740\u5c31\u662f\u4fdd\u5b58\u8fd9\u4e2a\u4fe1\u606f\u7684\u5730\u65b9\uff0c\u5b83\u6307\u5411\u8c03\u7528\u8be5\u65b9\u6cd5\u7684\u4f4d\u7f6e\u7684\u4e0b\u4e00\u6761\u6307\u4ee4\u5730\u5740\u3002<\/li>\n- \u6808\u5185\u5b58\u6ea2\u51fa
\u6808\u5e27\u8fc7\u591a\u5bfc\u81f4\u6808\u5185\u5b58\u6ea2\u51fa\uff08\u5982\u65b9\u6cd5\u9012\u5f52\u8c03\u7528\u6ca1\u6709\u8bbe\u7f6e\u4e0b\u7ebf\uff09
\u6808\u5e27\u8fc7\u5927\u5bfc\u81f4\u6808\u5185\u5b58\u6ea2\u51fa\n\u6808\u5185\u5b58\u81ea\u5df1\u4f1a\u91ca\u653e\uff0c\u6240\u4ee5\u4e0d\u9700\u8981\u5783\u573e\u56de\u6536<\/li>\n<\/ol>\n\n\n
\n\n\n\u7a0b\u5e8f\u8ba1\u6570\u5668<\/h2>\n
- \n
- \u7279\u70b9\uff1a
\u662f\u7ebf\u7a0b\u79c1\u6709\u7684\uff08\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u81ea\u5df1\u7684\u7a0b\u5e8f\u8ba1\u6570\u5668\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u7ebf\u7a0b\u6267\u884c\u5730\u5740\u4e0d\u4e00\u6837\uff09
\u4e0d\u4f1a\u5b58\u5728\u5185\u5b58\u6ea2\u51fa\uff08\u7531jvm\u89c4\u5b9a\u7684\uff09<\/li>\n - \u793a\u4f8b\uff1a\n
public class Example {
public static void main(String[] args) { \/\/ 1
int a = 5; \/\/ 2
int b = 10; \/\/ 3
int c = addNumbers(a, b); \/\/ 4
System.out.println(c); \/\/ 7
}<\/p>\npublic static int addNumbers(int a, int b) {
int result = a + b; \/\/ 5
return result; \/\/ 6
}
}<\/p>\n\u5728\u4e0a\u9762\u7684\u65b9\u6cd5\u4e2d\uff0c\u7a0b\u5e8f\u8ba1\u7b97\u5668\u6307\u5411\u7684\u5730\u5740\u5206\u522b\u662f1\u52307\uff0c\u4ee3\u7801\u6267\u884c\u7684\u6bcf\u4e00\u6b65\u64cd\u4f5c\u90fd\u4f1a\u88ab\u8bb0\u5f55<\/li>\n<\/ol>\n\n\n
\n\n\n\u672c\u5730\u65b9\u6cd5\u6808<\/h2>\n
\u672c\u5730\u65b9\u6cd5\u6808\u7684\u7ed3\u6784\u4e0e\u865a\u62df\u673a\u6808\u7c7b\u4f3c\uff0c\u4e5f\u662f\u7531\u6808\u5e27\uff08Stack Frame\uff09\u7ec4\u6210\u7684\uff0c\u6808\u5e27\u4e2d\u4fdd\u5b58\u4e86Native\u65b9\u6cd5\u7684\u5c40\u90e8\u53d8\u91cf\u3001\u64cd\u4f5c\u6570\u6808\u3001\u65b9\u6cd5\u51fa\u53e3\u7b49\u4fe1\u606f\u3002\u4e0e\u865a\u62df\u673a\u6808\u4e0d\u540c\u7684\u662f\uff0c\u672c\u5730\u65b9\u6cd5\u6808\u4e2d\u7684\u65b9\u6cd5\u4e0d\u662f\u7528Java\u8bed\u8a00\u7f16\u5199\u7684\uff0c\u800c\u662f\u7528\u5176\u5b83\u8bed\u8a00\u7f16\u5199\u7684\uff0c\u6bd4\u5982C\u3001C++\u7b49\u3002\u56e0\u6b64\uff0c\u672c\u5730\u65b9\u6cd5\u6808\u7684\u7ed3\u6784\u4e0e\u865a\u62df\u673a\u6808\u7c7b\u4f3c\uff0c\u4f46\u662f\u7528\u4e8e\u8c03\u7528\u672c\u5730\u65b9\u6cd5\u3002<\/p>\n
\u8fd9\u91cc\u6709\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u6f14\u793a\u4e86\u4e00\u4e2aJava\u7a0b\u5e8f\u5982\u4f55\u8c03\u7528\u4e00\u4e2a\u4f7f\u7528C\u8bed\u8a00\u7f16\u5199\u7684Native\u65b9\u6cd5\uff1a<\/p>\n
public class NativeExample {
static {
System.loadLibrary(“NativeLibrary”);
}<\/p>\npublic native void nativeMethod();<\/p>\n
public static void main(String[] args) {
NativeExample example = new NativeExample();
example.nativeMethod();
}
}<\/p>\n\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cNativeExample\u7c7b\u4e2d\u7684nativeMethod\u65b9\u6cd5\u662f\u4e00\u4e2a\u672c\u5730\u65b9\u6cd5\uff0c\u5b83\u7528native\u5173\u952e\u5b57\u4fee\u9970\uff0c\u8868\u793a\u8fd9\u4e2a\u65b9\u6cd5\u662f\u7528\u5176\u5b83\u8bed\u8a00\u5b9e\u73b0\u7684\u3002\u5728main\u65b9\u6cd5\u4e2d\uff0c\u901a\u8fc7example.nativeMethod()\u8c03\u7528\u4e86\u8fd9\u4e2a\u672c\u5730\u65b9\u6cd5\u3002\u5728\u6267\u884c\u65f6\uff0c\u865a\u62df\u673a\u4f1a\u4f7f\u7528\u672c\u5730\u65b9\u6cd5\u6808\u6765\u6267\u884cnative Method\u65b9\u6cd5\u7684\u76f8\u5173\u64cd\u4f5c\u3002<\/p>\n\n\n
\n\n\n\u65b9\u6cd5\u533a<\/h2>\n
\u65b9\u6cd5\u533a\u5b9e\u73b0\u65b9\u5f0f\uff1a\u6c38\u4e45\u4ee3\u3001\u5143\u7a7a\u95f4<\/p>\n
\u5728\u65e9\u671f\u7684 Java \u7248\u672c\u4e2d\uff0c\u65b9\u6cd5\u533a\u4e0e\u6c38\u4e45\u4ee3\u6709\u7740\u5bc6\u5207\u7684\u5173\u7cfb\u3002\u65b9\u6cd5\u533a\u662f\u4e00\u5757\u7528\u4e8e\u5b58\u50a8\u7c7b\u7684\u76f8\u5173\u4fe1\u606f\u3001\u5e38\u91cf\u3001\u9759\u6001\u53d8\u91cf\u3001\u5373\u65f6\u7f16\u8bd1\u5668\u4f18\u5316\u540e\u7684\u4ee3\u7801\u7b49\u6570\u636e\u7684\u5185\u5b58\u533a\u57df\u3002\u800c\u6c38\u4e45\u4ee3\u662f HotSpot \u865a\u62df\u673a\u4e2d\u7684\u6982\u5ff5\uff0c\u5b83\u5b9e\u9645\u4e0a\u5c31\u662f\u65b9\u6cd5\u533a\u7684\u4e00\u79cd\u5b9e\u73b0\u3002<\/p>\n
\u5728 Java 7 \u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\uff0c\u6c38\u4e45\u4ee3\u7528\u4e8e\u5b58\u50a8\u7c7b\u548c\u65b9\u6cd5\u76f8\u5173\u7684\u4fe1\u606f\uff0c\u5305\u62ec\u7c7b\u7684\u5b57\u8282\u7801\u3001\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u3001\u5b57\u6bb5\u3001\u65b9\u6cd5\u3001\u6784\u9020\u51fd\u6570\u7b49\u3002\u7531\u4e8e\u6c38\u4e45\u4ee3\u7684\u5927\u5c0f\u5728JVM\u542f\u52a8\u65f6\u56fa\u5b9a\uff0c\u5e76\u4e14\u968f\u7740\u5e94\u7528\u7684\u8fd0\u884c\u53ef\u80fd\u4f1a\u51fa\u73b0\u6c38\u4e45\u4ee3\u5185\u5b58\u6ea2\u51fa\u7684\u9519\u8bef\uff08OutOfMemoryError\uff09\uff0c\u5728Java 8\u4e2d\u88ab\u5143\u7a7a\u95f4\u6240\u66ff\u4ee3\u3002<\/p>\n
\u56e0\u6b64\uff0c\u4ece Java 8 \u5f00\u59cb\uff0c\u6c38\u4e45\u4ee3\u9010\u6e10\u88ab\u5143\u7a7a\u95f4\uff08Metaspace\uff09\u6240\u53d6\u4ee3\u3002\u5b83\u4f7f\u7528\u672c\u5730\u5185\u5b58\uff08\u5373\u975eJVM\u5806\u5185\u5b58\uff09<\/strong>\u6765\u5b58\u50a8\u7c7b\u5143\u6570\u636e\u3002\u8fd9\u6837\u7684\u8bbe\u8ba1\u51cf\u5c11\u4e86\u5185\u5b58\u6ea2\u51fa\u7684\u53ef\u80fd\u6027\uff0c\u56e0\u4e3a\u5143\u7a7a\u95f4\u7684\u5927\u5c0f\u4ec5\u53d7\u5230\u7cfb\u7edf\u53ef\u7528\u5185\u5b58\u7684\u9650\u5236\u3002\u5f53\u7136\uff0c\u5143\u7a7a\u95f4\u4e2d\u8fd8\u662f\u6709\u4e00\u4e2a\u521d\u59cb\u5927\u5c0f\uff0c\u5e76\u4e14\u53ef\u4ee5\u8bbe\u7f6e\u4e0a\u9650\uff0c\u4e00\u65e6\u8d85\u8fc7\u8fd9\u4e2a\u4e0a\u9650\uff0c\u4ecd\u7136\u4f1a\u629b\u51faOutOfMemoryError\u5f02\u5e38\u3002\u56e0\u6b64\uff0c\u65b9\u6cd5\u533a\u4e0e\u6c38\u4e45\u4ee3\u4e4b\u95f4\u7684\u5173\u7cfb\u5728 Java 8 \u53ca\u4ee5\u540e\u7684\u7248\u672c\u4e2d\u5df2\u7ecf\u4e0d\u518d\u5b58\u5728\u3002<\/p>\n<\/p>\n
<\/div><\/p>\n\u5143\u7a7a\u95f4\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n
\u7c7b\u7684\u5143\u6570\u636e\u4fe1\u606f\uff1a\u5305\u62ec\u7c7b\u7684\u540d\u79f0\u3001\u65b9\u6cd5\u540d\u3001\u8bbf\u95ee\u4fee\u9970\u7b26\u3001\u5b57\u6bb5\u63cf\u8ff0\u7b26\u7b49\u3002
\u9759\u6001\u53d8\u91cf\uff1a\u7c7b\u7684\u9759\u6001\u53d8\u91cf\u5b58\u653e\u5728\u5143\u7a7a\u95f4\u4e2d\u3002
\u5e38\u91cf\u6c60\uff1a\u5176\u4e2d\u5b58\u653e\u7740\u5b57\u7b26\u4e32\u5e38\u91cf\u3001\u5b57\u9762\u91cf\u548c\u7b26\u53f7\u5f15\u7528\u3002
\u65b9\u6cd5\u533a\u7684\u5bf9\u8c61\u4e0d\u4f1a\u88abJava\u5806\u4e2d\u7684\u5783\u573e\u56de\u6536\u5668\u4ee5\u76f8\u540c\u7684\u65b9\u5f0f\u56de\u6536\uff0c\u5b83\u6709\u81ea\u5df1\u7684\u5185\u5b58\u7ba1\u7406\u7cfb\u7edf\uff08\u5728\u4f7f\u7528\u5143\u7a7a\u95f4\u7684\u60c5\u51b5\u4e0b\uff0c\u5185\u5b58\u53ef\u4ee5\u4ece\u64cd\u4f5c\u7cfb\u7edf\u76f4\u63a5\u83b7\u53d6\uff09\u3002<\/p>\n\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u6bb5\u7b80\u5355\u7684Java\u4ee3\u7801\uff0c\u8bf4\u660e\u65b9\u6cd5\u533a\u4e2d\u67d0\u4e9b\u90e8\u5206\u662f\u5982\u4f55\u88ab\u4f7f\u7528\u7684\uff1a<\/p>\n
public class ExampleClass {
\/\/ \u5e38\u91cf\u6c60\u4e2d\u7684\u5185\u5bb9
private final static String CONSTANT_STRING = “Hello, World!”;<\/p>\n\/\/ \u65b9\u6cd5\u533a\u4e2d\u9759\u6001\u53d8\u91cf
private static int counter = 0;<\/p>\n\/\/ \u7c7b\u578b\u4fe1\u606f\u548c\u65b9\u6cd5\u4ee3\u7801
public static void increment() {
counter++;
}<\/p>\npublic static void main(String[] args) {
ExampleClass.increment();
System.out.println(CONSTANT_STRING);
}
}<\/p>\n\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff1a<\/p>\n
\u5b57\u7b26\u4e32”Hello, World!”\u4f1a\u88ab\u5b58\u50a8\u5728\u5e38\u91cf\u6c60\u4e2d\u3002
\u9759\u6001\u53d8\u91cfcounter\u4f1a\u88ab\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\u3002
\u7c7bExampleClass\u7684\u7c7b\u578b\u4fe1\u606f\uff08\u6bd4\u5982\u5b83\u7684\u65b9\u6cd5\u548c\u5b57\u6bb5\uff09\u4e5f\u4f1a\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\u3002
increment\u65b9\u6cd5\u548cmain\u65b9\u6cd5\u7684\u4ee3\u7801\uff0c\u5728\u88ab\u5373\u65f6\u7f16\u8bd1\u5668\u7f16\u8bd1\u4e4b\u540e\uff0c\u7f16\u8bd1\u540e\u7684\u673a\u5668\u7801\u4e5f\u4f1a\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\u3002<\/p>\n\u5f53Java\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0cJVM\u4f1a\u52a0\u8f7dExampleClass\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u4f1a\u5c06ExampleClass\u7684\u7c7b\u578b\u4fe1\u606f\u3001\u5e38\u91cf\u6c60\u4e2d\u7684\u5e38\u91cf\u3001increment\u548cmain\u65b9\u6cd5\u7684\u5b57\u8282\u7801\u7b49\u6570\u636e\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\uff0c\u9759\u6001\u53d8\u91cfcounter\u540c\u6837\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\u5185\uff0c\u4f46\u5177\u4f53\u662f\u5728\u6c38\u4e45\u4ee3\u8fd8\u662f\u5143\u7a7a\u95f4\u5219\u53d6\u51b3\u4e8eJVM\u7684\u7248\u672c\u53ca\u914d\u7f6e\u3002\u5728Java 8\u53ca\u4e4b\u540e\u7248\u672c\uff0c\u8fd9\u90e8\u5206\u6570\u636e\u4f1a\u5b58\u50a8\u5728\u64cd\u4f5c\u7cfb\u7edf\u7684\u672c\u5730\u5185\u5b58\u4e2d\uff0c\u79f0\u4f5c\u5143\u7a7a\u95f4\u3002<\/p>\n<\/p>\n\n\n
\n\n\n\u65b9\u6cd5\u6808\u548c\u672c\u5730\u65b9\u6cd5\u6808\u7684\u533a\u522b<\/h2>\n
\u65b9\u6cd5\u6808\uff08Method stack\uff09\uff1a<\/strong><\/p>\n
\u65b9\u6cd5\u6808\u5b58\u50a8\u7684\u662f Java \u65b9\u6cd5\u7684\u8c03\u7528\u4fe1\u606f\u3002\u6bcf\u5f53\u4e00\u4e2a\u65b9\u6cd5\u88ab\u8c03\u7528\u65f6\uff0cJVM\u90fd\u4f1a\u5728\u65b9\u6cd5\u6808\u4e2d\u5206\u914d\u4e00\u4e2a\u6808\u5e27\uff08Stack Frame\uff09\uff0c\u7528\u4e8e\u5b58\u50a8\u8be5\u65b9\u6cd5\u7684\u8c03\u7528\u4fe1\u606f\u3002
\u65b9\u6cd5\u6808\u4e2d\u7684\u6808\u5e27\u4f1a\u968f\u7740\u65b9\u6cd5\u7684\u8c03\u7528\u548c\u8fd4\u56de\u800c\u52a8\u6001\u5730\u88ab\u521b\u5efa\u548c\u9500\u6bc1\uff0c\u65b9\u6cd5\u6808\u7684\u6808\u5e27\u4e5f\u5305\u62ec\u4e86\u65b9\u6cd5\u7684\u53c2\u6570\u3001\u5c40\u90e8\u53d8\u91cf\u4ee5\u53ca\u7528\u4e8e\u8fd4\u56de\u7684\u6307\u4ee4\u5730\u5740\u7b49\u4fe1\u606f\u3002
\u672c\u5730\u65b9\u6cd5\u6808\uff08Native method stack\uff09\uff1a<\/strong><\/p>\n\u672c\u5730\u65b9\u6cd5\u6808\u5219\u662f\u7528\u4e8e\u6267\u884c\u672c\u5730\uff08Native\uff09\u65b9\u6cd5\u7684\u6808\uff0c\u5373\u4f7f\u7528\u672c\u5730\u8bed\u8a00\uff08\u5982 C \u6216 C++\uff09\u7f16\u5199\u7684\u65b9\u6cd5\u3002\u5b83\u4e0e\u65b9\u6cd5\u6808\u7c7b\u4f3c\uff0c\u4f46\u662f\u7528\u4e8e\u6267\u884c\u672c\u5730\u65b9\u6cd5\u3002
\u672c\u5730\u65b9\u6cd5\u6808\u4e5f\u4f1a\u4e3a\u6bcf\u4e2a\u672c\u5730\u65b9\u6cd5\u5206\u914d\u4e00\u4e2a\u6808\u5e27\uff0c\u7528\u4e8e\u5b58\u50a8\u672c\u5730\u65b9\u6cd5\u7684\u8c03\u7528\u4fe1\u606f\u3002<\/p>\n\n\n
\n\n\n\u8fd0\u884c\u65f6\u5e38\u91cf\u503c\u548c\u5b57\u7b26\u4e32\u5e38\u91cf\u503c\u7684\u533a\u522b<\/h2>\n
- \n
- \u5b58\u50a8\u4f4d\u7f6e\uff1a\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\uff08\u5143\u7a7a\u95f4\uff09\u4e2d\uff0c\u800c\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u5728 JDK 8 \u65f6\u5b58\u50a8\u5728\u5806\u4e2d\u3002
\u4f5c\u7528\uff1a\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4e3b\u8981\u5b58\u50a8\u7f16\u8bd1\u671f\u95f4\u751f\u6210\u7684\u5b57\u9762\u91cf\u3001\u7b26\u53f7\u5f15\u7528\u7b49\uff0c\u800c\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u5219\u7528\u4e8e\u5b58\u50a8\u5b57\u7b26\u4e32\u5bf9\u8c61\u5b9e\u4f8b\u7684\u5f15\u7528\u3002
\u52a8\u6001\u6027\uff1a\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u5728\u8fd0\u884c\u671f\u95f4\u53ef\u4ee5\u52a8\u6001\u5730\u653e\u5165\u65b0\u7684\u5e38\u91cf\uff0c\u800c\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u5219\u76f8\u5bf9\u8f83\u4e3a\u56fa\u5b9a\u3002
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5177\u4f53\u7684\u793a\u4f8b\u6765\u8bf4\u660e\u5b83\u4eec\u7684\u533a\u522b\uff1a<\/li>\n - \u5047\u8bbe\u6709\u4e00\u4e2a\u7c7b MyClass\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u5b57\u7b26\u4e32\u5e38\u91cf STRING_CONSTANT\u3002
\u5728\u7f16\u8bd1\u9636\u6bb5\uff0cSTRING_CONSTANT \u4f1a\u88ab\u5b58\u50a8\u5728 class \u6587\u4ef6\u7684\u5e38\u91cf\u6c60\u4e2d\u3002\u5f53\u7c7b\u52a0\u8f7d\u5668\u52a0\u8f7d MyClass \u7c7b\u65f6\uff0c\u5e38\u91cf\u6c60\u4e2d\u7684\u5185\u5bb9\u4f1a\u88ab\u590d\u5236\u5230\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4e2d\u3002<\/li>\n - \u5728\u8fd0\u884c\u65f6\uff0c\u5982\u679c\u521b\u5efa\u4e86\u4e00\u4e2a MyClass \u7684\u5b9e\u4f8b\uff0c\u5e76\u8c03\u7528\u4e86 STRING_CONSTANT\uff0c\u90a3\u4e48\u865a\u62df\u673a\u9996\u5148\u4f1a\u5728\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4e2d\u67e5\u627e\u8be5\u5b57\u7b26\u4e32\u7684\u5f15\u7528\u3002\u5982\u679c\u627e\u5230\u4e86\uff0c\u5c31\u76f4\u63a5\u4f7f\u7528\u8be5\u5f15\u7528\uff1b\u5982\u679c\u6ca1\u6709\u627e\u5230\uff0c\u5c31\u4f1a\u5728\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b57\u7b26\u4e32\u5bf9\u8c61\uff0c\u5e76\u5c06\u5176\u5f15\u7528\u5b58\u50a8\u5728\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4e2d\u3002<\/li>\n<\/ul>\n\n\n
\n\n\n\u603b\u7ed3<\/h2>\n
- \n
- \u7a0b\u5e8f\u8ba1\u6570\u5668\uff1a\u5b58\u50a8jvm\u6307\u4ee4\u7684\u6267\u884c\u5730\u5740\uff0c\u4e0d\u4f1a\u5185\u5b58\u6ea2\u51fa<\/li>\n
- \u865a\u62df\u673a\u6808\uff1a\u6bcf\u4e2a\u7ebf\u7a0b\u8fd0\u884c\u65f6\u6240\u9700\u8981\u7684\u5185\u5b58\uff0c\u6bcf\u4e2a\u6808\u7531\u591a\u4e2a\u6808\u5e27\u7ec4\u6210\uff0c\u5bf9\u5e94\u7740\u6bcf\u6b21\u65b9\u6cd5\u8c03\u7528\u65f6\u6240\u5360\u7528\u7684\u5185\u5b58\uff0c \u6bcf\u4e2a\u7ebf\u7a0b\u53ea\u80fd\u6709\u4e00\u4e2a\u6d3b\u52a8\u6808\u5e27\uff0c\u5bf9\u5e94\u7740\u5f53\u524d\u6b63\u5728\u6267\u884c\u7684\u90a3\u4e2a\u65b9\u6cd5<\/li>\n
- \u672c\u5730\u65b9\u6cd5\u6808\uff1a\u5b58\u50a8\u975ejava\u4ee3\u7801\u7f16\u5199\u7684\u672c\u5730\u65b9\u6cd5<\/li>\n
- \u5806\uff1a\u901a\u8fc7 new \u5173\u952e\u5b57\uff0c\u521b\u5efa\u5bf9\u8c61\u90fd\u4f1a\u4f7f\u7528\u5806\u5185\u5b58\u3002\u540c\u65f6\u5305\u542b\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u548c\u6570\u7ec4\u3002<\/li>\n
- \u65b9\u6cd5\u533a\uff1a\u5b83\u5b58\u50a8\u6bcf\u4e2a\u7c7b\u7684\u7ed3\u6784,\u5982\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60,\u5b57\u6bb5\u548c\u65b9\u6cd5\u6570\u636e,\u4ee5\u53ca\u65b9\u6cd5\u548c\u6784\u9020\u51fd\u6570\u7684\u4ee3\u7801,\u5305\u62ec\u5728\u7c7b\u548c\u5b9e\u4f8b\u521d\u59cb\u5316\u4ee5\u53ca\u63a5\u53e3\u521d\u59cb\u5316\u4e2d\u4f7f\u7528\u7684\u7279\u6b8a\u65b9\u6cd5<\/li>\n
- \u5171\u540c\u7279\u70b9\uff1a\u7a0b\u5e8f\u8ba1\u6570\u5668\u3001\u6808\u662f\u7ebf\u7a0b\u79c1\u6709\uff1b\u65b9\u6cd5\u533a\u3001\u5806\u662f\u7ebf\u7a0b\u5171\u4eab\u3002
\u7a0b\u5e8f\u8ba1\u6570\u5668\u4e0d\u4f1a\u5185\u5b58\u6ea2\u51fa\uff0c\u5176\u4ed6\u90fd\u4f1a\u3002<\/li>\n<\/ul>\n\n\n
\n\n\nJVM\u5e38\u7528\u8c03\u4f18\u53c2\u6570<\/h2>\n
\u9488\u5bf9Java\u865a\u62df\u673a\uff08JVM\uff09\u7684\u6027\u80fd\u8c03\u4f18\uff0c\u6709\u4e00\u4e9b\u5e38\u89c1\u7684\u8c03\u4f18\u53c2\u6570\u53ef\u4ee5\u7528\u6765\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684JVM\u8c03\u4f18\u53c2\u6570\uff1a<\/p>\n
\u5806\u5185\u5b58\u8bbe\u7f6e<\/h3>\n
-Xms\uff1a\u8bbe\u7f6eJVM\u521d\u59cb\u5806\u5927\u5c0f
-Xmx\uff1a\u8bbe\u7f6eJVM\u6700\u5927\u5806\u5927\u5c0f
-Xmn\uff1a\u8bbe\u7f6e\u65b0\u751f\u4ee3\u5927\u5c0f<\/p>\n\u5783\u573e\u56de\u6536\u5668\u9009\u62e9<\/h3>\n
-XX:+UseSerialGC\uff1a\u4f7f\u7528\u4e32\u884c\u5783\u573e\u56de\u6536\u5668
-XX:+UseParallelGC\uff1a\u4f7f\u7528\u5e76\u884c\u5783\u573e\u56de\u6536\u5668
-XX:+UseConcMarkSweepGC\uff1a\u4f7f\u7528CMS\u5783\u573e\u56de\u6536\u5668
-XX:+UseG1GC\uff1a\u4f7f\u7528G1\u5783\u573e\u56de\u6536\u5668<\/p>\n\u5783\u573e\u56de\u6536\u76f8\u5173\u53c2\u6570<\/h3>\n
-XX:NewRatio\uff1a\u8bbe\u7f6e\u65b0\u751f\u4ee3\u4e0e\u8001\u5e74\u4ee3\u7684\u6bd4\u4f8b
-XX:SurvivorRatio\uff1a\u8bbe\u7f6eEden\u533a\u4e0eSurvivor\u533a\u7684\u6bd4\u4f8b
-XX:MaxTenuringThreshold\uff1a\u8bbe\u7f6e\u5bf9\u8c61\u8fdb\u5165\u8001\u5e74\u4ee3\u7684\u5e74\u9f84\u9608\u503c<\/p>\n\u5143\u7a7a\u95f4\uff08Metaspace\uff09\u8bbe\u7f6e<\/h3>\n
-XX:MaxMetaspaceSize\uff1a\u8bbe\u7f6e\u5143\u7a7a\u95f4\u6700\u5927\u5927\u5c0f
-XX:MetaspaceSize\uff1a\u8bbe\u7f6e\u5143\u7a7a\u95f4\u521d\u59cb\u5927\u5c0f<\/p>\n\u5e76\u53d1\u6807\u8bb0<\/h3>\n
-XX:+UseConcMarkSweepGC\uff1a\u542f\u7528CMS\u5783\u573e\u56de\u6536\u5668
-XX:+UseG1GC\uff1a\u542f\u7528G1\u5783\u573e\u56de\u6536\u5668<\/p>\n\u7ebf\u7a0b\u5806\u6808\u5927\u5c0f<\/h3>\n
-Xss\uff1a\u8bbe\u7f6e\u6bcf\u4e2a\u7ebf\u7a0b\u7684\u5806\u6808\u5927\u5c0f<\/p>\n
\u6027\u80fd\u76d1\u63a7\u53c2\u6570<\/h3>\n
-XX:+HeapDumpOnOutOfMemoryError \uff1aOOM\u65f6\u81ea\u52a8\u6253\u5370\u5806\u8f6c\u50a8\u6587\u4ef6<\/p>\n
-XX:HeapDumpPath\uff1a \u5b58\u50a8\u6587\u4ef6\u5730\u5740<\/p>\n
-XX:+PrintGCDetails\uff1a\u8f93\u51faGC\u7684\u8be6\u7ec6\u65e5\u5fd7<\/p>\n
-XX:+PrintGCTimeStamps\uff1a\u8f93\u51faGC\u53d1\u751f\u7684\u65f6\u95f4\u6233<\/p>\n
JVM\u8c03\u4f18\u5b9e\u4f8b\u6f14\u793a<\/h3>\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
JVM\u5185\u5b58\u7ed3\u6784 \u5806 \u5806\u7684\u7279\u70b9 \u7ebf\u7a0b\u5171\u4eab\uff0c\u4e00\u5757\u6700\u5927\u7684\u5185\u5b58\u5b58\u50a8\u533a \u901a\u8fc7new\u521b\u5efa\u7684\u5bf9\u8c61\uff0c\u6570\u7ec4\u548c\u5b57\u7b26\u5e38\u91cf\u6c60\u90fd\u5728\u5806\u4e2d […]<\/p>\n","protected":false},"author":1,"featured_media":257,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[6],"class_list":["post-256","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-jvm"],"_links":{"self":[{"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/posts\/256","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/comments?post=256"}],"version-history":[{"count":4,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/posts\/256\/revisions"}],"predecessor-version":[{"id":288,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/posts\/256\/revisions\/288"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/media\/257"}],"wp:attachment":[{"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/media?parent=256"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/categories?post=256"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.zackzzp.top\/index.php\/wp-json\/wp\/v2\/tags?post=256"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- \u5b58\u50a8\u4f4d\u7f6e\uff1a\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u5b58\u50a8\u5728\u65b9\u6cd5\u533a\uff08\u5143\u7a7a\u95f4\uff09\u4e2d\uff0c\u800c\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u5728 JDK 8 \u65f6\u5b58\u50a8\u5728\u5806\u4e2d\u3002
- \u5c40\u90e8\u53d8\u91cf\u8868
- \u7279\u70b9\uff1a
- jmp
- \u5e74\u9f84\u9608\u503c\uff1a\u5f53\u5bf9\u8c61\u5728 survivor \u533a\u5b58\u6d3b\u4e86 15 \u6b21(\u9ed8\u8ba4)\u4e4b\u540e\uff0c\u4f1a\u88ab\u79fb\u5230\u8001\u5e74\u4ee3\u533a\u3002\u53ef\u4ee5\u901a\u8fc7JVM\u53c2\u6570
- \u65b0\u751f\u4ee3\uff1a
![\"image\"](\"https:\/\/img.picgo.net\/2024\/09\/30\/imagee0ee1b90da65d85b.png\")
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