/* write all the data in the buffer to the stream */
int tio_flush(TFILE *fp)
{
struct timespec deadline = {0, 0};
/* loop until we have written our buffer */
while (fp->writebuffer.len > 0)
{
/* wait until we can write */
if (tio_wait(fp->fd, POLLOUT, fp->writetimeout, &deadline))
return -1;
/* write one block */
if (tio_writebuf(fp))
return -1;
}
return 0;
}
/* write all the data in the buffer to the stream */
int tio_flush(TFILE *fp)
{
struct timeval deadline;
/* build a time by which we should be finished */
tio_get_deadline(&deadline,fp->writetimeout);
/* loop until we have written our buffer */
while (fp->writebuffer.len > 0)
{
/* wait until we can write */
if (tio_wait(fp,0,&deadline))
return -1;
/* write one block */
if (tio_writebuf(fp))
return -1;
}
return 0;
}
/* try a single write of data in the buffer if the file descriptor
will accept data */
static int tio_flush_nonblock(TFILE *fp)
{
struct pollfd fds[1];
int rv;
/* wait for activity */
fds[0].fd=fp->fd;
fds[0].events=POLLOUT;
rv=poll(fds,1,0);
/* check if any file descriptors were ready (timeout) or we were
interrupted */
if ((rv==0)||((rv<0)&&(errno==EINTR)))
return 0;
/* any other errors? */
if (rv<0)
return -1;
/* so file descriptor will accept writes */
return tio_writebuf(fp);
}
/* try a single write of data in the buffer if the file descriptor
will accept data */
static int tio_flush_nonblock(TFILE *fp)
{
struct timeval tv;
fd_set fdset;
int rv;
/* prepare our filedescriptorset */
FD_ZERO(&fdset);
FD_SET(fp->fd,&fdset);
/* set the timeout to 0 to poll */
tv.tv_sec=0;
tv.tv_usec=0;
/* wait for activity */
rv=select(FD_SETSIZE,NULL,&fdset,NULL,&tv);
/* check if any file descriptors were ready (timeout) or we were
interrupted */
if ((rv==0)||((rv<0)&&(errno==EINTR)))
return 0;
/* any other errors? */
if (rv<0)
return -1;
/* so file descriptor will accept writes */
return tio_writebuf(fp);
}