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2012-10-30event_notifier: enable it to use pipesPaolo Bonzini1-1/+2
This takes the eventfd emulation code from the main loop. When the EventNotifier is used for the main loop too, we need this compatibility code. Without CONFIG_EVENTFD, event_notifier_get_fd is only usable for the "read" side of the notifier, for example to set a select() handler. The return value of event_notifier_set changes to the cleaner 0/-errno. No caller is actually checking the return value. Reviewed-by: Anthony Liguori <anthony@codemonkey.ws> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-30event_notifier: add Win32 implementationPaolo Bonzini1-2/+15
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-07-12event_notifier: add event_notifier_set_handlerPaolo Bonzini1-0/+3
Win32 event notifiers are not file descriptors, so they will not be able to use qemu_set_fd_handler. But even if for now we only have a POSIX version of EventNotifier, we can add a specific function that wraps the call. The wrapper passes the EventNotifier as the opaque value so that it will be used with container_of. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-07-12event_notifier: add event_notifier_init_fdPaolo Bonzini1-1/+2
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-07-12event_notifier: remove event_notifier_testPaolo Bonzini1-1/+0
The function is useless (and unused). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-07-12event_notifier: add event_notifier_setPaolo Bonzini1-0/+1
EventNotifier right now cannot be used as an inter-thread communication primitive. It only works if something else (the kernel) sets the eventfd. Add a primitive to signal an EventNotifier that another thread is waiting on. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-01-13prepare for future GPLv2+ relicensingPaolo Bonzini1-0/+12
All files under GPLv2 will get GPLv2+ changes starting tomorrow. event_notifier.c and exec-obsolete.h were only ever touched by Red Hat employees and can be relicensed now. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-01event_notifier: move to top-level directoryAvi Kivity1-0/+16
Has no business in hw/. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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