Linux进程的地址空间
Linux进程的地址空间
1、进程的地址空间
① 通过打印地址查看数据保存的位置：
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
int INIT_GLOBAL_VALUE1 = 0;
int INIT_GLOBAL_VALUE2 = 0;
int INIT_GLOBAL_VALUE3 = 0;
int INIT_GLOBAL_VALUE4 = 0;
int INIT_GLOBAL_VALUE5 = 0;
int INIT_GLOBAL_VALUE6 = 0;
int UNINIT_GLOBAL_VALUE1;
int UNINIT_GLOBAL_VALUE2;
int UNINIT_GLOBAL_VALUE3;
int UNINIT_GLOBAL_VALUE4;
int UNINIT_GLOBAL_VALUE5;
int UNINIT_GLOBAL_VALUE6;
int main(int argc,char* argv[],char* env[])
{
int val_stack = 10;
int *heap = NULL;
heap = (int *)malloc(sizeof(int)*5);
/*打印存储在text代码段的地址*/
printf("\naddress of printf is %p\n",printf);
printf("address of main is %p\n\n",main);
/*打印存储在.data处的初始化数据*/
printf("address of INIT_GLOBAL_VALUE1 is %p\n",&INIT_GLOBAL_VALUE1);
printf("address of INIT_GLOBAL_VALUE2 is %p\n",&INIT_GLOBAL_VALUE2);
printf("address of INIT_GLOBAL_VALUE3 is %p\n",&INIT_GLOBAL_VALUE3);
printf("address of INIT_GLOBAL_VALUE4 is %p\n",&INIT_GLOBAL_VALUE4);
printf("address of INIT_GLOBAL_VALUE5 is %p\n",&INIT_GLOBAL_VALUE5);
printf("address of INIT_GLOBAL_VALUE6 is %p\n\n",&INIT_GLOBAL_VALUE6);
/*打印存储在.bss处的未初始化数据*/
printf("address of UNINIT_GLOBAL_VALUE1 is %p\n",&UNINIT_GLOBAL_VALUE1);
printf("address of UNINIT_GLOBAL_VALUE2 is %p\n",&UNINIT_GLOBAL_VALUE2);
printf("address of UNINIT_GLOBAL_VALUE3 is %p\n",&UNINIT_GLOBAL_VALUE3);
printf("address of UNINIT_GLOBAL_VALUE4 is %p\n",&UNINIT_GLOBAL_VALUE4);
printf("address of UNINIT_GLOBAL_VALUE5 is %p\n",&UNINIT_GLOBAL_VALUE5);
printf("address of UNINIT_GLOBAL_VALUE6 is %p\n\n",&UNINIT_GLOBAL_VALUE6);
/*打印堆区*/
printf("address of heap is %p\n\n",heap);
/*打印栈区*/
printf("address of val_stack is %p\n\n",&val_stack);
free(heap);
heap = NULL;
/*打印命令行参数*/
printf("argv[%d]:%p\n\n",0,argv[0]);
/*打印环境变量*/
printf("env[%d]:%p\n",0,env[0]);
return 0;
}
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