Alibaba architects' deep learning java virtual machine experience PDF, worthy of entering Ali

Why do java programmers need to learn JVM?

1. You can understand why Java was called an interpreted language at the earliest, and why it was later called a language where interpretation and compilation coexist (you can answer this question by understanding the interpreter and just-in-time compiler in the JVM);
2. You can understand the difference between dynamic compilation and static compilation, and what are the benefits of dynamic compilation over static compilation (JVM JIT);
3. You can use some tools, such as jmap, jvisualvm, jstat, jconsole and other tools to assist you in observing the heap layout of Java applications at runtime, so you can improve the performance of Java applications by adjusting JVM related parameters;
4. Can clearly know how the Java program is executed;
5. It can be understood why high-level languages ​​such as Java are highly portable.

Java virtual machine, as a knowledge that middle and senior developers must cultivate, has a high learning threshold. This PDF by the architect of Ali can be used as an excellent textbook for learning virtual machines.

Deep learning virtual machine PDF:

This PDF will let everyone learn the java virtual machine from the shallower to the deeper from 5 places. Compared with the recent interview environment, after you master the java virtual machine, your probability of getting an offer will be much higher!

method of obtaining:

If you need to get it, you can get it for free after one-click, three-connection, and then look at the assistant's WeChat: ( vip1024x )

• The first part approached java
• The second part of automatic memory management mechanism
• The third part of the virtual machine execution subsystem
• The fourth part of the program compilation and code optimization
• Part 5 Efficient Concurrency

The first part approached java

Through actual combat, how to independently compile an OpenJDK 7 by yourself

The second part of automatic memory management mechanism

Java automatic memory management mechanism consists of two parts: memory allocation and memory recovery. To understand the mechanism of memory allocation and recovery, you need to understand the Java memory area (Java runtime data area)

 

 

The third part of the virtual machine execution subsystem

Stack frame: It is a data structure used to support the virtual machine to call and execute the method. It stores the method's local variable table, operand stack, dynamic connection and method return value and other information. The process from invocation to execution of each method corresponds to the process of a stack frame from stacking to stacking in the virtual machine

 

The fourth part program compilation and code optimization

The pursuit of performance and efficiency has always been the eternal purpose of program development. In addition to our own coding process, we must fully consider the performance and efficiency of the code. The virtual machine will also optimize the code during the compilation phase. This article will take a look at what optimization methods the virtual machine uses for the code we write from the virtual machine level.

Part 5 Efficient Concurrency

 

How to obtain the PDF of the deep learning virtual machine:

If you need to get it, you can get it for free after one-click, three-connection, and then look at the assistant's WeChat: ( vip1024x )