p7.1.c

来自「linux程序设计例程」· C语言 代码 · 共 43 行

#include<stdio.h>
#include<malloc.h>
#include<unistd.h>

int bss_var;
int data_var0=1;

int main(int argc,char **argv)
{
  printf("below are addresses of types of process's mem\n");
  printf("Text location:\n"); 
  printf("\tAddress of main(Code Segment):%p\n",main);

  printf("____________________________\n");
  int stack_var0=2;
  printf("Stack Location:\n");
  printf("\tInitial end of stack:%p\n",&stack_var0);
 
  int stack_var1=3;
  printf("\tnew end of stack:%p\n",&stack_var1);
  
  printf("____________________________\n");
  printf("Data Location:\n");
  printf("\tAddress of data_var(Data Segment):%p\n",&data_var0);
  static int data_var1=4;
  printf("\tNew end of data_var(Data Segment):%p\n",&data_var1);
 
  printf("____________________________\n");
  printf("BSS Location:\n");
  printf("\tAddress of bss_var:%p\n",&bss_var);

  printf("____________________________\n");
  char *b = sbrk((ptrdiff_t)0);
  printf("Heap Location:\n");
  printf("\tInitial end of heap:%p\n",b);

  brk(b+4);
  b=sbrk((ptrdiff_t)0);
  printf("\tNew end of heap:%p\n",b);
  
  return 0;
 }