Object header get complicated

Object header, sync block, thin lock vs fat lock, hashcode – all of this and more will be explained in the following post.

First, let’s make a brief overview on the object header in the CLR.

What is the object header?

An header is – like it sound – header “above” the object.
If I try to illustrate it, it will be like this —->

Every object in CLR has an header that contains
info related to the object. The run -time use this info as we’ll see later in this post.


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