linux文件读写 文件锁、select、poll【转】

#define MAX_BUFFER_SIZE 1024  
#define IO_IN_FILES 3  
#define TIME_DELAY 60000  
  
int main() {  
    struct pollfd fds[IO_IN_FILES];  
    char buff[MAX_BUFFER_SIZE];  
    int i,res,real_read;  
  
    fds[0].fd=0;  
    if((fds[1].fd=open("in1",O_RDONLY|O_NONBLOCK))<0) {  
        printf("Open in1 error!\n");  
        return 1;  
    }  
      
    if((fds[2].fd=open("in2",O_RDONLY|O_NONBLOCK))<0) {  
        printf("Open in2 error!\n");  
        return 1;  
    }  
  
    for(i=0;i