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-rw-r--r--hw/event_notifier.c62
1 files changed, 0 insertions, 62 deletions
diff --git a/hw/event_notifier.c b/hw/event_notifier.c
deleted file mode 100644
index 13f3656460..0000000000
--- a/hw/event_notifier.c
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * event notifier support
- *
- * Copyright Red Hat, Inc. 2010
- *
- * Authors:
- * Michael S. Tsirkin <mst@redhat.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2. See
- * the COPYING file in the top-level directory.
- */
-
-#include "hw.h"
-#include "event_notifier.h"
-#ifdef CONFIG_EVENTFD
-#include <sys/eventfd.h>
-#endif
-
-int event_notifier_init(EventNotifier *e, int active)
-{
-#ifdef CONFIG_EVENTFD
- int fd = eventfd(!!active, EFD_NONBLOCK | EFD_CLOEXEC);
- if (fd < 0)
- return -errno;
- e->fd = fd;
- return 0;
-#else
- return -ENOSYS;
-#endif
-}
-
-void event_notifier_cleanup(EventNotifier *e)
-{
- close(e->fd);
-}
-
-int event_notifier_get_fd(EventNotifier *e)
-{
- return e->fd;
-}
-
-int event_notifier_test_and_clear(EventNotifier *e)
-{
- uint64_t value;
- int r = read(e->fd, &value, sizeof(value));
- return r == sizeof(value);
-}
-
-int event_notifier_test(EventNotifier *e)
-{
- uint64_t value;
- int r = read(e->fd, &value, sizeof(value));
- if (r == sizeof(value)) {
- /* restore previous value. */
- int s = write(e->fd, &value, sizeof(value));
- /* never blocks because we use EFD_SEMAPHORE.
- * If we didn't we'd get EAGAIN on overflow
- * and we'd have to write code to ignore it. */
- assert(s == sizeof(value));
- }
- return r == sizeof(value);
-}