static ssize_t buffered_flush(MigrationState *s)
{
size_t offset = 0;
ssize_t ret = 0;
DPRINTF("flushing %zu byte(s) of data\n", s->buffer_size);
while (s->bytes_xfer < s->xfer_limit && offset < s->buffer_size) {
size_t to_send = MIN(s->buffer_size - offset, s->xfer_limit - s->bytes_xfer);
ret = migrate_fd_put_buffer(s, s->buffer + offset, to_send);
if (ret <= 0) {
DPRINTF("error flushing data, %zd\n", ret);
break;
} else {
DPRINTF("flushed %zd byte(s)\n", ret);
offset += ret;
s->bytes_xfer += ret;
}
}
DPRINTF("flushed %zu of %zu byte(s)\n", offset, s->buffer_size);
memmove(s->buffer, s->buffer + offset, s->buffer_size - offset);
s->buffer_size -= offset;
if (ret < 0) {
return ret;
}
return offset;
}
static ssize_t buffered_flush(QEMUFileBuffered *s)
{
size_t offset = 0;
ssize_t ret = 0;
DPRINTF("flushing %zu byte(s) of data\n", s->buffer_size);
while (s->bytes_xfer < s->xfer_limit && offset < s->buffer_size) {
ret = migrate_fd_put_buffer(s->migration_state, s->buffer + offset,
s->buffer_size - offset);
if (ret == -EAGAIN) {
DPRINTF("backend not ready, freezing\n");
ret = 0;
s->freeze_output = 1;
break;
}
if (ret <= 0) {
DPRINTF("error flushing data, %zd\n", ret);
break;
} else {
DPRINTF("flushed %zd byte(s)\n", ret);
offset += ret;
s->bytes_xfer += ret;
}
}
DPRINTF("flushed %zu of %zu byte(s)\n", offset, s->buffer_size);
memmove(s->buffer, s->buffer + offset, s->buffer_size - offset);
s->buffer_size -= offset;
if (ret < 0) {
return ret;
}
return offset;
}