From 2284451019a796eb2a37d70544e19d686de7f8c0 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Tue, 27 Sep 2011 17:26:23 +0300 Subject: event_notifier: move to top-level directory Has no business in hw/. Signed-off-by: Avi Kivity Signed-off-by: Anthony Liguori --- hw/event_notifier.c | 62 ----------------------------------------------------- 1 file changed, 62 deletions(-) delete mode 100644 hw/event_notifier.c (limited to 'hw/event_notifier.c') 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 - * - * 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 -#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); -} -- cgit 1.4.1