Java memory regions and object exploration
1. Runtime data areas During the execution of Java programs, the Memory managed by the Java VIRTUAL machine is divided into several data areas. Each...
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Tag: jvm
There are four reference types in the JVM
February 3, 2024
by 龍美玲
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Strong references As long as there are strong references, garbage collector will never collect for example: Object obj = new Object(); Help garbage object collection...
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Can you stand up to your interviewer’s barrage about the JVM class loading mechanism?
February 3, 2024
by Dr. Gregory Scott
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Let's start by reviewing one of the general principles of the JVM that we talked about yesterday. We compile it from a.java code file into...
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Openjdk 1.8 source code to add Chinese annotations
February 3, 2024
by Kaitlyn Bowden-Larsen
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Garbled characters must be a character set problem, and then watch the log to troubleshoot the problem step by step.
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JVM built-in lock synchronized keyword, bias lock optimization in batch rebias and batch undo
February 3, 2024
by Aaryahi Keer
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This is the sixth day of my participation in the First Challenge 2022. For details: First Challenge 2022. From the process of locking and unlocking...
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JVM(3) class loader
February 3, 2024
by Julie Moran
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Class loaders are used to load classes into Java virtual machines. Since JDK1.2, the loading process uses the parent delegate mechanism, which ensures the security...
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How do I set the Java thread pool size?
February 3, 2024
by Lindsey Connolly-Baker
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The KLT model is used by the JVM. Java threads have a 1:1 mapping between OS threads and Java threads
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Extended Jvm memory region allocation
February 3, 2024
by Anthony Thompson
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"This is the 14th day of my participation in the First Challenge 2022. For details: First Challenge 2022." Due to my interest in JVM, I...
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Why do singletons need double-check? Volatile tells you why.
February 3, 2024
by Judith Smith-Potter
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Is double-check necessary at all? I think it's necessary. Do you know about CPU caching? The CPU cache causes us to use volatile for bilateral...
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Big factory also had the accident of JVM SafePoint
February 3, 2024
by Kiara Jani
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"This is the 12th day of my participation in the First Challenge 2022. For details: First Challenge 2022." This article is inspired by the book...
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Java Native Syntactic Differences and Effects of Synchronized and volatile
February 3, 2024
by Jonathon Rocha
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This is the fifth day of my first text challenge 2022. We learned about the memory model of objects and the relationship between biased locks,...
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The JVM series: Stuff about JVM class loading
February 3, 2024
by Tessa McIntyre
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Either a directly generated array class or a non-array class or interface goes through a series of steps to be directly used by the JVM....
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Deep JVM series: “The Cloud Native Java Virtual Machine” reinventing and exploring GraalVM
February 3, 2024
by George Kerr-Allen
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GraalVM background The rise and rise of old and new programming languages shows that there must be a demand for power, such as the Internet...
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The layout of Java objects in memory is not as mysterious as you might think
February 2, 2024
by 錢冠霖
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Java is written in C++, so Java objects eventually map to an object in C++ that can describe all Java objects. Optimization of what is...
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Object memory layout in Java and how to calculate object size
February 2, 2024
by Miss Chelsea Akhtar
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The HotSpot VIRTUAL machine object memory layout, compression pointer, using joL to view and calculate the object memory usage, object access location method!
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Common directives for JVM tuning monitoring in Linux
February 2, 2024
by Dhanush Kota
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A back-end programmer has to deal with Linux servers all the time, so this article documents some ideas about looking at CPU, process/thread, and JVM...
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What are the optimizations for concurrent programming locks
February 2, 2024
by Alexandra Owens
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Synchronized performance was a concern prior to JDK 1.6, but since 1.6, JVM teams have done a lot of optimization for synchronized, making it comparable...
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Understanding the JVM part 5: The Java Memory Model and threads
February 2, 2024
by Megan Miles
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The Java Memory Model (JMM) is a Memory Model defined by the JVM to mask differences in Memory access between hardware and operating systems. Main...
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Understand the Java virtual machine memory region model in one diagram
February 2, 2024
by Miss Natalie Tucker
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The memory area managed by the Java Virtual machine is divided into program counters, virtual machine stacks, local method stacks, heaps, and method areas.
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JVM execution detail + memory model interaction
February 2, 2024
by Riley Cochran
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What is the JVM The JVM is an imaginary machine, but it is implemented by simulating functions on real computers. The JVM contains a set...
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JVM memory model (runtime data area)
February 2, 2024
by Samantha Edwards
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Each thread is private, so there are stacks for every thread. A stack is also a data structure that follows FILO and creates a stack...
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Understand the JVM memory model JMM
February 2, 2024
by John Davis
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The Java memory model is a compliant memory model specification, shielding a variety of hardware and operating system access differences, to ensure that the Java...
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Do you really understand the Java memory model?
February 2, 2024
by Michele Brock
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【 Small house press 】 This article mainly introduces the background of the problems generated by the model, the problems solved, the processing ideas, the...
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Explanation of the volatile keyword
February 2, 2024
by Christopher Hancock
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Volatile volatile is a lightweight synchronization mechanism provided by the JVM to ensure visibility, not guarantee atomicity to prohibit instruction reordering. JMM Memory Model Overview...
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Brief concepts related to the JVM and the Java memory model
February 2, 2024
by Samantha Edwards
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Runtime data area: Two parts, thread private and shared data area. Thread private includes local method area, virtual machine stack, program counter; The Java heap:...
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JVM — The Java Memory Model (completed)
February 2, 2024
by Neil Evans
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Send this article to the next person who asks you what the Java memory model is. (original) Hollis
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Hand in Hand teaches you to implement a programming language, Enkel, Series 1
February 2, 2024
by 蒙哲瑋
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As I mentioned in my previous blog, I'm running a "let yourself know" contest. The goal of this competition is to create a project and...
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JVM series 3 :(hardware level memory model and instruction rearrangement issues)
February 2, 2024
by Jessica Morales
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Topics: Memory models, memory models of hardware, instruction rearrangement content: Memory models at the hardware level
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How does the JVM fit the needs of a custom project
February 2, 2024
by Katherine Walton
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XX command Boolean type Non-Boolean type -xmx-xms how to view running is JVM parameter Jps &&
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JVM runtime data area – Multi-graph warning, swastika memory model interpretation
February 2, 2024
by Pamela Howell
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This article introduces the run-time data area in this diagram, also known as the memory model. For Java programmers, memory leaks and memory spills are...
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