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60 lines
1.2 KiB
C
60 lines
1.2 KiB
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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#include "qemu-common.h"
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#include "qemu/event_notifier.h"
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#include "qemu/main-loop.h"
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int event_notifier_init(EventNotifier *e, int active)
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{
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e->event = CreateEvent(NULL, TRUE, FALSE, NULL);
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assert(e->event);
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return 0;
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}
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void event_notifier_cleanup(EventNotifier *e)
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{
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CloseHandle(e->event);
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}
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HANDLE event_notifier_get_handle(EventNotifier *e)
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{
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return e->event;
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}
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int event_notifier_set_handler(EventNotifier *e,
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EventNotifierHandler *handler)
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{
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if (handler) {
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return qemu_add_wait_object(e->event, (IOHandler *)handler, e);
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} else {
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qemu_del_wait_object(e->event, (IOHandler *)handler, e);
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return 0;
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}
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}
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int event_notifier_set(EventNotifier *e)
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{
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SetEvent(e->event);
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return 0;
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}
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int event_notifier_test_and_clear(EventNotifier *e)
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{
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int ret = WaitForSingleObject(e->event, 0);
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if (ret == WAIT_OBJECT_0) {
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ResetEvent(e->event);
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return true;
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}
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return false;
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}
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