e34e47eb28
Add 'initialized' field and use it to avoid touching event notifiers which are either not initialized or if their initialization failed. This is somewhat a hack, but it seems the less intrusive way to make virtio code deal with event notifiers that failed initialization. Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Message-Id: <20201217150040.906961-4-mlevitsk@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
46 lines
924 B
C
46 lines
924 B
C
/*
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* event notifier support
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*
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* Copyright Red Hat, Inc. 2010
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*
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* Authors:
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* Michael S. Tsirkin <mst@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef QEMU_EVENT_NOTIFIER_H
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#define QEMU_EVENT_NOTIFIER_H
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#ifdef _WIN32
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#include <windows.h>
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#endif
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struct EventNotifier {
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#ifdef _WIN32
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HANDLE event;
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#else
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int rfd;
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int wfd;
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bool initialized;
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#endif
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};
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typedef void EventNotifierHandler(EventNotifier *);
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int event_notifier_init(EventNotifier *, int active);
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void event_notifier_cleanup(EventNotifier *);
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int event_notifier_set(EventNotifier *);
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int event_notifier_test_and_clear(EventNotifier *);
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#ifdef CONFIG_POSIX
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void event_notifier_init_fd(EventNotifier *, int fd);
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int event_notifier_get_fd(const EventNotifier *);
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#else
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HANDLE event_notifier_get_handle(EventNotifier *);
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#endif
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#endif
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