qemu-char: simplify pty polling
There is no need to use a timer and pty_chr_read to detect a connected pty. It is simpler to just call g_poll periodically and check for POLLHUP. It is done once per second, and only if the pty is disconnected, so it is cheap enough. Tested with "-monitor pty" and "-serial mon:pty", both of which work correctly and do not freeze QEMU. (How to test ptys? "socat -,raw,echo=0 /dev/pts/4,raw"). Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Message-id: 1366385529-10329-3-git-send-email-pbonzini@redhat.com Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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