mkshm.c

来自「基于网络编程的例子」· C语言 代码 · 共 26 行

/*
 * mkshm.c - Create and initialize shared memory segment
 */
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <stdio.h>
#include <stdlib.h>

#define BUFSZ 4096 /* Size of the segment */

int main(void)
{
    int shmid;
    
    if((shmid = shmget(IPC_PRIVATE, BUFSZ, 0666)) < 0) {
        perror("shmget");
        exit(EXIT_FAILURE);
    }

    printf("segment created: %d\n", shmid);
    system("ipcs -m");

    exit(EXIT_SUCCESS);
}