shm_read.c

linux下进程间通讯列子

#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <errno.h>
#include <stdio.h>
#define SHARE_SIZE 2048

struct student
{
        char name[30];
        int age;
};

int main(int argc,char *argv[])
{
	int shmid;
        struct student *stu_info;
        void *shm_addr=NULL;
        shmid=shmget((key_t)5566,SHARE_SIZE,IPC_CREAT|0666);
        shm_addr=shmat(shmid,NULL,0);
        stu_info=(struct student*)shm_addr;
	printf("student name %s\n",stu_info->name);
	shmdt(shm_addr);
	shmctl(shmid,IPC_RMID,NULL);
	return 0;
}