C++ (Cpp) vtblk_drain示例

示例#1

文件： virtio_blk.c 项目： rchander/freebsd

static int
vtblk_detach(device_t dev)
{
	struct vtblk_softc *sc;

	sc = device_get_softc(dev);

	VTBLK_LOCK(sc);
	sc->vtblk_flags |= VTBLK_FLAG_DETACH;
	if (device_is_attached(dev))
		vtblk_stop(sc);
	VTBLK_UNLOCK(sc);

	if (sc->vtblk_tq != NULL) {
		taskqueue_drain(sc->vtblk_tq, &sc->vtblk_intr_task);
		taskqueue_free(sc->vtblk_tq);
		sc->vtblk_tq = NULL;
	}

	vtblk_drain(sc);

	if (sc->vtblk_disk != NULL) {
		disk_destroy(sc->vtblk_disk);
		sc->vtblk_disk = NULL;
	}

	if (sc->vtblk_sglist != NULL) {
		sglist_free(sc->vtblk_sglist);
		sc->vtblk_sglist = NULL;
	}

	VTBLK_LOCK_DESTROY(sc);

	return (0);
}

示例#2

文件： virtio_blk.c 项目： wan721/DragonFlyBSD

static int
vtblk_detach(device_t dev)
{
	struct vtblk_softc *sc;

	sc = device_get_softc(dev);

	lwkt_serialize_enter(&sc->vtblk_slz);
	sc->vtblk_flags |= VTBLK_FLAG_DETACH;
	if (device_is_attached(dev))
		vtblk_stop(sc);
	lwkt_serialize_exit(&sc->vtblk_slz);

	vtblk_drain(sc);

	if (sc->cdev != NULL) {
		disk_destroy(&sc->vtblk_disk);
		sc->cdev = NULL;
	}

	if (sc->vtblk_sglist != NULL) {
		sglist_free(sc->vtblk_sglist);
		sc->vtblk_sglist = NULL;
	}

	return (0);
}