This's my first version.The logic is simple, just the selection sort. I spent much time learning how to write AT&T assembly on 64-bit Linux.almost all books just talk about 32-bit assembly. Such as registers, on 64-bit linux, rax, rbx, rcx..... are a…

Computer Systems A Programmer's Perspective Second Edition To this point in our study of computer systems, we have assumed thatprograms run in isolation, with minimal input and output. How-ever, in the real world, application programs use services pr…

转自:https://dave.cheney.net/practical-go/presentations/qcon-china.html?from=timeline   1. Guiding principles If I’m going to talk about best practices in any programming language I need some way to define what I mean by best. If you came to my keynote…

Profiling Go Programs  分析go语言项目 24 June 2011 At Scala Days 2011, Robert Hundt presented a paper titled Loop Recognition in C++/Java/Go/Scala. The paper implemented a specific loop finding algorithm, such as you might use in a flow analysis pass of a…

Writing Reentrant and Thread-Safe Code 编写可重入和线程安全的代码 (http://www.ualberta.ca/dept/chemeng/AIX-43/share/man/info/C/a_doc_lib/aixprggd/genprogc/writing_reentrant_thread_safe_code.htm) In single-threaded processes there is only one flow of control. The…

spark集群中的节点可以只处理自身独立数据库里的数据,然后汇总吗? 修改 我将spark搭建在两台机器上,其中一台既是master又是slave,另一台是slave,两台机器上均装有独立的mongodb数据库.我是否可以让它们只统计自身数据库的内容,然后将结果汇总到一台服务器上的数据库里?目前我的代码如下,但是最终只统计了master里的数据,另一个worker没有统计上. val config = new Configuration() //以下代码表示只统计本机数据库上的数据,猜测问题可能…

Contents Tutorial Hello, World Command-Line Arguments Finding Duplicate Lines A Web Server Loose Ends Program Structure Names Declarations Variables Assignments Type Declarations Packages and Files Scope Basic Data Types Integers Floating-Point Numbe…

很多话说得很透彻,把一些觉比较精彩的摘抄一下. ... It seems to me that if the authors I studied were writing today, they would agree with the following characterization: Science is knowledge which we understand so well that we can teach it to a computer; and if we don't fu…

bsdasm 来源 http://www.int80h.org/bsdasm/ Preface by G. Adam StanislavWhiz Kid Technomagic Assembly language programing under Unix is highly undocumented. It is generally assumed that no one would ever want to use it because various Unix systems run on…

BACKGROUND OF THE INVENTION The present invention relates to virtual machine implementations, and in particular to a safe general purpose virtual machine that generates optimized virtual machine computer programs that are executable in a general purp…