iothread: use signalfd
Block SIGALRM, SIGIO and consume them via signalfd. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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Block SIGALRM, SIGIO and consume them via signalfd. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>