有名管道

有名管道

进程A

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#define MESSAGE "can you hear me?"

int main()
{
    int fd;
    fd = open("myfifo", O_RDWR);

    char buf[1024];
    memset(buf, 0, sizeof(buf));

    int len = read(fd, buf, sizeof(buf));

    printf("process recv message:%s\n", buf);

    return 0;
}

进程B

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#define MESSAGE "can you hear me?"

int main()
{
    int fd;
    fd = open("myfifo", O_WRONLY);

    printf("process send message:%s\n", MESSAGE);
    write(fd, MESSAGE, strlen(MESSAGE));


    return 0;
}