Fig 1. - Memory layout of a C program Heap SegmentHeap segment is also part of RAM where dynamically allocated variables are stored. In C language dynamic memory allocation is done by using malloc and calloc functions. When some more memory need to be allocated using malloc and calloc ...
APUE Chapter 7(3) – Memory layout of a C program 一个C语言的可执行程序(a.out)通常被分成以下几个部分: · Text segment: 即汇编中的.text segemnt。machine instruction, sharable, only one copy in memory, read-only · Initialized data: 即汇编中的.data segment。是已经初始化的数据。是出现在...
Memory Layout of a C Program A typical memory representation of C program consists of following sections. 1. Text segment2. Initialized data segment 2.1 initialized read-only area 2.2 initialized read-write area3. Uninitialized data segment4. Heap5. Stack Read Memory Layout of C Programs for ...
The stack area contains the program stack, a LIFO structure, typically located in the higher parts of memory. On the standard PC x86 computer architecture, it grows toward address zero; on some other architectures, it grows in the opposite direction. A “stack pointer” register tracks the top...
1 vote Anurag Gupta 10 years ago Hello sir,Your explanation about memory layout of a C program is very good but there is one fact that in OS, programs are considered as processes and every process that is entering into running state, Four segments are created - Data segement, code segment...
当然,这么一大块内存空间为了能够被更好地管理,我们通常要对内存进行布局,也就是划分功能块,我们称之为 内存布局(memory layout) 我们这里以c语言为例。通常我们的划分是连续的,如Fig 1所示,通常我们把连续的虚拟内存空间,从低地址位到高地址位,划分为五大段(segment): 文本段(test segment) 初始化后的数据段(...
pi是一个局部指针,指向堆中的一块内存块,该块的大小为sizeof(int),pi本身存储在内存的栈中,生命期是main函数内 新申请的内存块在堆中,生命期是malloc/free之间 用图表示如下: 图3 例子的内存布局 总结 本文介绍了C/C++中由源程序到可执行文件的步骤,和可执行程序的内存布局,数据存储类别,最后还通过一个例子...
pi是一个局部指针,指向堆中的一块内存块,该块的大小为sizeof(int),pi本身存储在内存的栈中,生命期是main函数内 新申请的内存块在堆中,生命期是malloc/free之间 用图表示如下: 图3 例子的内存布局 总结 本文介绍了C/C++中由源程序到可执行文件的步骤,和可执行程序的内存布局,数据存储类别,最后还通过一个例子...
典型C Memory Layout 一个典型的C语言程序加载到内存中分为以下几个部分: 命令行参数 栈 堆 未初始化的数据段 有初始值的数据段 代码段 对于静态链接生成的可执行文件来说,基本就是由这六个部分组成;如果是动态链接,可能还有动态链接库加载区。关于动态链接,是一个很复杂的部分,哪天抽出时间来单独写一篇,本文...
1.4Memory layout of an executing program Computer memory consists of number of storage locations, or cells, each of which has a unique numericaddress. Addresses are usually written in hexadecimal. Each storage location can contain a fixed number ofbinary digits. The most common size is one byte...