{"id":156463,"date":"2020-09-17T05:06:01","date_gmt":"2020-09-16T21:06:01","guid":{"rendered":"http:\/\/4563.org\/?p=156463"},"modified":"2020-09-17T05:06:01","modified_gmt":"2020-09-16T21:06:01","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e5%90%8c%e6%ad%a5%e4%bb%a3%e7%a0%81%e5%9d%97%e5%8d%87%e7%ba%a7%e5%88%b0%e8%bd%bb%e9%87%8f%e7%ba%a7%e9%94%81%ef%bc%8c%e8%80%8c%e4%b8%8d%e6%98%af%e5%81%8f%e5%90%91%e9%94%81","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=156463","title":{"rendered":"\u4e3a\u4ec0\u4e48\u540c\u6b65\u4ee3\u7801\u5757\u5347\u7ea7\u5230\u8f7b\u91cf\u7ea7\u9501\uff0c\u800c\u4e0d\u662f\u504f\u5411\u9501\u4e86\u5462"},"content":{"rendered":"
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\u4e3a\u4ec0\u4e48\u540c\u6b65\u4ee3\u7801\u5757\u5347\u7ea7\u5230\u8f7b\u91cf\u7ea7\u9501\uff0c\u800c\u4e0d\u662f\u504f\u5411\u9501\u4e86\u5462 <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : git00ll <\/span> <\/i> 0<\/span> <\/div>\n
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\u6309\u7167\u5982\u4e0b\u4ee3\u7801\u8fdb\u884c\u6d4b\u8bd5\uff0c\u7406\u8bba\u4e0a\u540c\u6b65\u4ee3\u7801\u5757\u91cc\u5e94\u8be5\u5bf9\u5bf9\u8c61\u6dfb\u52a0\u504f\u5411\u9501\uff0c\u53ef\u662f\u4e3a\u4ec0\u4e48\u4ece\u8f93\u51fa\u4e0a\u6765\u770b\uff0c\u6dfb\u52a0\u7684\u662f\u8f7b\u91cf\u9501\u5462<\/p>\n

java \u7248\u672c 1.8.0_192-b12<\/h3>\n
 public static void test(){   Object o = new Object();   System.out.println(ClassLayout.parseInstance(o).toPrintable());   synchronized (o){    System.out.println(ClassLayout.parseInstance(o).toPrintable());   }   System.out.println(ClassLayout.parseInstance(o).toPrintable());  } <\/code><\/pre>\n
java.lang.Object object internals:  OFFSET  SIZE   TYPE DESCRIPTION                               VALUE       0     4        (object header)                           01 00 00 00 (00000001 00000000 00000000 00000000) (1)       4     4        (object header)                           00 00 00 00 (00000000 00000000 00000000 00000000) (0)       8     4        (object header)                           e5 01 00 f8 (11100101 00000001 00000000 11111000) (-134217243)   java.lang.Object object internals:  OFFSET  SIZE   TYPE DESCRIPTION                               VALUE       0     4        (object header)                           b0 f4 70 01 (10110000 11110100 01110000 00000001) (24179888)       4     4        (object header)                           00 00 00 00 (00000000 00000000 00000000 00000000) (0)       8     4        (object header)                           e5 01 00 f8 (11100101 00000001 00000000 11111000) (-134217243)   java.lang.Object object internals:  OFFSET  SIZE   TYPE DESCRIPTION                               VALUE       0     4        (object header)                           01 00 00 00 (00000001 00000000 00000000 00000000) (1)       4     4        (object header)                           00 00 00 00 (00000000 00000000 00000000 00000000) (0)       8     4        (object header)                           e5 01 00 f8 (11100101 00000001 00000000 11111000) (-134217243)   <\/code><\/pre>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (3<\/span>)        <\/div>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : git00ll <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u81ea\u95ee\u81ea\u7b54\u4e00\u4e0b\uff0c\u662f\u56e0\u4e3a jvm \u5728\u52a0\u8f7d\u8fc7\u7a0b\u4e2d\u4f1a\u6682\u65f6\u7981\u7528\u504f\u5411\u9501\uff0c\u6240\u4ee5\u6b64\u5904\u53ea\u6709\u8f7b\u91cf\u7ea7\u9501\u3002
    \u53ef\u4ee5\u5728\u8c03\u7528 test \u65b9\u6cd5\u4e4b\u524d\uff0c\u5148\u4f11\u7720 5 \u79d2\uff0c\u8fd9\u6837\u7b49 jvm \u5b8c\u5168\u52a0\u8f7d\u5b8c\u6210\u540e\uff0c\u504f\u5411\u9501\u624d\u80fd\u751f\u6548\uff0c\u5c31\u80fd\u770b\u5230\u6548\u679c\u4e86\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : sagaxu <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 JDK15 \u5f00\u59cb\u5df2\u7ecf\u9ed8\u8ba4\u7981\u7528\u504f\u5411\u9501\uff0c\u672a\u6765\u7248\u672c\u4f1a\u79fb\u9664\u8fd9\u4e2a\u529f\u80fd                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : HiShan <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u522b\u5b66\u4e86\uff0c\u90fd\u88ab\u5f03\u7528\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    \u4e3a\u4ec0\u4e48\u540c\u6b65\u4ee3\u7801\u5757\u5347\u7ea7\u5230\u8f7b\u91cf\u7ea7\u9501\uff0c\u800c…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/156463"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=156463"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/156463\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=156463"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=156463"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=156463"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}