Memory Layout of C Programs   A typical memory representation of C program consists of following sections. 1. Text segment2. Initialized data segment3. Uninitialized data segment4. Stack5. Heap A typical memory layout of a running process 1. Text Seg…

这是内核自带的文档,讲解ARM芯片的内存是如何布局的!比较简单,对于初学者可以看一下!但要想深入理解Linux内存管理,建议还是找几本好书看看,如深入理解Linux虚拟内存,嵌入系统分析,Linux内核分析及程序设计等:  Kernel Memory Layout on ARM Linux Linux在ARM平台上的内存布局 Russell King <rmk@arm.linux.org.uk>       November 17, 2005 (2.6.15) This document de…

Memory Layout for Multiple and Virtual Inheritance(By Edsko de Vries, January 2006)Warning. This article is rather technical and assumes a good knowledge of C++ and some assembly language.In this article we explain the object layout implemented by gc…

参考 MDK-ARM Linker Scatter File的用法(转载) keil报错 Rebuild target 'Target 1' assembling test1.s... linking... .\Objects\pro.axf: Error: L6630E: Invalid token start expected number or ( but found n at position 5 on line 5 .\Objects\pro.axf: Error: L6629E: U…

Memory Layout (Virtual address space of a C process) 分类: C语言基础2012-12-06 23:16 2174人阅读 评论(0) 收藏 举报 found a good example to demostrate the memory layout and its stack info of a user-mode process, only that this example is for Linux. But it is still wo…

原文:Linux内存管理:ARM Memory Layout以及mmu配置 在内核进行page初始化以及mmu配置之前,首先需要知道整个memory map. 1. ARM Memory Layout PAGE_OFFSET  Start address of Kernel space  0xC000_0000 lowmem  Kernel direct-mapped RAM region (1:1 mapping)  Maximum 896M HIGH_MEMORY  End address…

Blue : User Space 128TBRed : Kernel Space 512MBThe rest of the address space goes to various parts of the system, along with a few unusable holes. ----------- <previous description obsolete, deleted> Virtual memory map with 4 level page tables: 0000…

参考 http://www.cnblogs.com/skynet/archive/2011/03/07/1975479.html…

在C语言中,内存的主要分为下列几部分: 1. Text/Code Segment 文本/代码区 2. Initialized Data Segments 初始化的数据区 3. Uninitialized Data Segments 未初始化的数据区 4. Stack Segment 栈区 5. Heap Segment 堆区…

Text Segment       Text Segment,通常也被称为代码段. 为了防止 heap 或是 stack 的溢出,text 段常被安排在 heap 或是 stack 之后. Text 段通常是sharable 的, 所以对于使用频次比较高的程序,在内存中一般只有一份拷贝.另外,Text 段也常常只是 read-only 的,其目的是防止其中存放的指令被意外的修改. Initialized Data Segment Initialized Data Segment 通常被称作数据…

今天尝试用Valgrind调试程序时,发现堆和栈的一些问题没有理解透彻,于是Google了下"Memory Layout C",接着就通过Memory Layout of C Programs以及Anatomy of a Program in Memory复习了以前的一些知识点并且学习了一些新的点, 在阅读过程中查看mallopt的manual时了解到 M_MXFAST 参数时,顺便搜了下"Fastbins linux",结果就看到了这篇待翻译的文章,大概看了下后觉…

理解ELF的BSS section, 可以概括为: Uninitialized global/static data "Block Started by Symbol" "Better Save Space" Has section header but occupies no space CSAPP一书对bss的描述如下: .bss: 未被初始化的全局的C变量.这一节在o文件中不占实际的空间,只是一个place holder.o文件格式之所以区分初始化的变量和未被…

http://www.cocoachina.com/ios/20150625/12234.html 说起内存管理,看似老生常谈,而真正掌握内存管理的核心其实并不简单.ARC/MRR以及“谁分配谁就负责释放”这种基本原则是很重要的,但不是本文要讨论的重点.之前本人还没在小站发过相关的文章,本篇文章中,我本人是想结合实际开发和调试中遇到的一些细节问题,来谈谈iOS的内存管理内在机制和调试方法. 上一篇文章已经是4月份的了,时间飞快又过去了好久,小站5月份没有文章更新,罪过罪过.最近小站的站长我又转换…

Faster, more memory efficient and more ordered dictionaries on PyPy https://morepypy.blogspot.com/2015/01/faster-more-memory-efficient-and-more.html https://en.wikipedia.org/wiki/Stackless_Python Stackless Python, or Stackless, is a Python programmin…

摘要 简述启动过程的内存分配,各个映像的烧写,加载,logo的刷新,文件系统mount. DRAM:外部RAM: ISRAM:内部RAM(128K),(PL会跑在ISRAM里面,去初始化DRAM,loadub映像到DRAM): 目录 概述-分区layout以及虚拟内存布局 一概述 首先了解mt6573nand flash的16分区结构:如下 1.preloader: 下载和程序启动引导,初始化EMI和PLL... 2.DSP_BL modem+dsp 3.NVRAM 是一个yaffs2的文件系统…

原文链接:http://www.linuxjournal.com/article/6556?page=0,0 An earlier article [“Memory Leak Detection in Embedded Systems”, LJ, September 2002, available atwww.linuxjournal.com/article/6059] discussed the detection of memory leaks when using C as the pro…

A data processor supports the use of multiple memory models by computer programs. At a device external to a data processor, such as a memory controller, memory transactions requests are received from the data processor. Each memory transaction reques…

An improved memory model and implementation is disclosed. The memory model includes a Total Store Ordering (TSO) and Partial Store Ordering (PSO) memory model to provide a partial order for the memory operations which are issued by multiple processor…

A framework is provided for automatic inference of memory fences in concurrent programs. A method is provided for generating a set of ordering constraints that prevent executions of a program violating a specification. One or more incoming avoidable…

http://www.oracle.com/technetwork/java/javase/memleaks-137499.html 3.1 Meaning of OutOfMemoryError One common indication of a memory leak is the java.lang.OutOfMemoryError error. This error is thrown when there is insufficient space to allocate an ob…

Handling memory leaks in Java programs Find out when memory leaks are a concern and how to prevent them   Published on February 01, 2001 How memory leaks manifest themselves in Java programs Most programmers know that one of the beauties of using a p…

虚拟内存地址空间 Linux内核属于微内核的范畴,内核控制计算机的硬件资源,运行在特权模式:用户态应用程序运行在普通用户模式,无法直接访问硬件资源,必须依托于内核提供的资源,如CPU资源.Memory资源.I/O资源等. Linux采用沙箱机制,每一个进程运行在独立的虚拟地址空间,最大限度避免单个进程异常导致整个系统崩溃. 每一个进程的虚拟地址空间分为内核虚拟地址空间和用户虚拟地址空间两部分,内核虚拟地址空间为内核态代码和内核堆栈,所有进程的内核虚拟地址空间是复用的:用户虚拟地址空间则是各进程的…

https://en.wikipedia.org/wiki/Memory_leak In computer science, a memory leak is a type of resource leak that occurs when a computer program incorrectly manages memory allocations[1] in such a way that memory which is no longer needed is not released.…

在Android中存在着C和Java两个完全不同的世界,前者直接建立在Linux的基础上,后者直接建立在JVM的基础上.zygote的中文名字为"受精卵",这个名字很好的诠释了zygote进程的作用.作为java世界的孵化者,zygote本身是一个native程序,是由init根据init.rc文件中的配置项创建的. @/system/core/rootdir/init.rc service zygote /system/bin/app_process -Xzygote /system…

linux内核调试指南 一些前言 作者前言 知识从哪里来 为什么撰写本文档 为什么需要汇编级调试 ***第一部分:基础知识*** 总纲:内核世界的陷阱 源码阅读的陷阱 代码调试的陷阱 原理理解的陷阱 建立调试环境 发行版的选择和安装 安装交叉编译工具 bin工具集的使用 qemu的使用 initrd.img的原理与制作 x86虚拟调试环境的建立 arm虚拟调试环境的建立 arm开发板调试环境的建立 gdb基础 基本命令 gdb之gui gdb技巧 gdb宏 汇编基础--X86篇 用户手册 AT&…

MON166: SOFTWARE RESET USING THE MONITOR QUESTION What happens when debugging using MON166 and my program executes a software reset using the SRTS instruction? Specifically, does SRST restart the monitor or does it restart my program? ANSWER The beha…

/************************************************************************************** * RPi 2B UART作为调试口或者普通串口 * 声明: * 本文主要记录RPi 2B UART如何设置为调试口或者普通串口,本来早就做出来了,由于接错 * 了线,GND和TXD接反了,导致SecureCRT发不出信号,但能接收到. * * 2016-2-24 深圳 南山平山村 曾剑锋 ****************…

This chapter describes in detail the troubleshooting tools that are available in JDK 7. In addition, the chapter lists operating-system-specific tools that may be used in conjunction with these troubleshooting tools. Finally, the chapter explains how…

Delphi是市场上最好的RAD工具,但是现在C++占据着主导地位,有时针对一个问题很难找到Delphi或Pascal的解决方案.可是却可能找到了一个相关的C++类.本文描述几种在Delphi代码中使用C++类的方法. Delphi is one of the greatest RAD tools on the market, but it in this currently C++-dominated world, it can sometimes be hard to find a Delp…

static_cast和reinterpret_cast揭秘 收藏 本文讨论static_cast<> 和 reinterpret_cast<>. reinterpret_cast可以转换任意一个32bit整数,包括所有的指针和整数.可以把任何整数转成指针,也可以把任何指针转成整数,以及把指针转化为任意类型的指针,威力最为强大!但不能将非32bit的实例转成指针.总之,只要是32bit的东东,怎么转都行! static_cast和dynamic_cast可以执行指针到指针的转换,或…