yaoliao
yaoliao
/ FlameGraph.java
Created
August 14, 2020 08:32
— forked from apangin/FlameGraph.java
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| /* | |
| * Copyright 2018 Andrei Pangin | |
| * | |
| * This is a specialized Java port of the FlameGraph script available at | |
| * https://github.com/brendangregg/FlameGraph/blob/master/flamegraph.pl | |
| * | |
| * Copyright 2016 Netflix, Inc. | |
| * Copyright 2011 Joyent, Inc. All rights reserved. | |
| * Copyright 2011 Brendan Gregg. All rights reserved. | |
| * |
yaoliao
/ ObjectHeader32.txt
Created
April 6, 2020 15:19
— forked from arturmkrtchyan/ObjectHeader32.txt
Java Object Header
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| |----------------------------------------------------------------------------------------|--------------------| | |
| | Object Header (64 bits) | State | | |
| |-------------------------------------------------------|--------------------------------|--------------------| | |
| | Mark Word (32 bits) | Klass Word (32 bits) | | | |
| |-------------------------------------------------------|--------------------------------|--------------------| | |
| | identity_hashcode:25 | age:4 | biased_lock:1 | lock:2 | OOP to metadata object | Normal | | |
| |-------------------------------------------------------|--------------------------------|--------------------| | |
| | thread:23 | epoch:2 | age:4 | biased_lock:1 | lock:2 | OOP to metadata object | Biased | | |
| |-------------------------------------------------------|--------------------------------|--------------------| | |
| | |