Ruby2.6的一个新的功能:Just in time complier 特点: 和传统的JIT编译器不一样之处:把代码写成C并存储在磁盘,并使用一个C编译器来生成native code.这样就节省了运行时间.改善了Ruby程序的执行效率. 传统的编译器如bootsnap会在第一次运行一个Ruby Script时,把YARV instruciton存到disk.之后还运行这个脚本就省略了parse和complie的过程,直接使用YARV instruction.这会提升大概30%的运行速度. 使…

https://flink.apache.org/news/2015/09/16/off-heap-memory.html   Running data-intensive code in the JVM and making it well-behaved is tricky. Systems that put billions of data objects naively onto the JVM heap face unpredictable OutOfMemoryErrors and…

Ahead-of-Time (AOT) compilation is in contrast to Just-in-Time compilation (JIT). In a nutshell, .NET compilers do not generate platform specific assembly code, they generate .NET bytecode, instructions which are interpreted by the .NET virtual machi…

https://chrisseaton.com/truffleruby/jokerconf17/ https://chrisseaton.com/truffleruby/tenthings/ https://chrisseaton.com/truffleruby/oraclecode17/oraclecode17.pdf…

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原文Understanding How Graal Works - a Java JIT Compiler Written in Java,讲了jvmci和ideal graph的基本概念以及一些优化技术,很不错的一篇文章,开头结尾不太重要的部分已经省略,请见谅. JIT编译器是什么 我敢说很多读者都知道JIT编译器是什么,但是我还是会覆盖基本概念,让在场各位都没有基础上的疑问. 当你运行javac命令,或者用IDE保存的时候就做编译,你的java程序会从java代码编译成JVM字节码.JVM字…

深入理解Java Class文件格式(九) http://blog.csdn.net/zhangjg_blog/article/details/22432599 http://blog.csdn.net/zhangjg_blog/article/details/22205831 Introduction to Compiler Construction in a Java World http://download.csdn.net/download/jetsong/6908145 https:…

简介 之前在一篇实时深度图优化的论文中看到球谐光照(Spherical Harmonics Lighting)的应用,在查阅了许许多多资料之后还是无法完全理解,我个人觉得如果之前对实时渲染技术不是很了解的话,球谐光照还是有一定难度的.大多数的资料都是从原理上描述球谐函数及其光照过程,而没有对具体的应用做解释,我直到真正动手实现了一遍球谐光照之后,才完全理解球谐光照具体的过程以及作用. 球谐光照实际上是一种对光照的简化,对于空间上的一点,受到的光照在各个方向上是不同的,也即各向异性,所以空间上一点…

Java Class字节码知识点回顾 https://yq.aliyun.com/articles/2358?spm=5176.8067842.tagmain.105.fQdvH3 JVM Class详解之一 https://yq.aliyun.com/articles/7241?spm=5176.8067842.tagmain.58.fQdvH3 JVM Class详解之二 Method字节码指令 https://yq.aliyun.com/articles/7242?spm=5176.806…

Introduction All .NET developers know that one of the best features of the CLR is JIT-compilation: Just-In-Time compilation. Its name describes how it works: right before calling your method (just in time), the CLR triggers the JIT-compiler to produc…