C++ (Cpp) tws_q_remove_tailの例

コード例 #1

ファイル: tws_cam.c プロジェクト: dcui/FreeBSD-9.3_kernel

static void
tws_drain_busy_queue(struct tws_softc *sc)
{
    struct tws_request *req;
    union ccb          *ccb;
    TWS_TRACE_DEBUG(sc, "entry", 0, 0);

    mtx_lock(&sc->q_lock);
    req = tws_q_remove_tail(sc, TWS_BUSY_Q);
    mtx_unlock(&sc->q_lock);
    while ( req ) {
        TWS_TRACE_DEBUG(sc, "moved to TWS_COMPLETE_Q", 0, req->request_id);
        untimeout(tws_timeout, req, req->ccb_ptr->ccb_h.timeout_ch);

        req->error_code = TWS_REQ_RET_RESET;
        ccb = (union ccb *)(req->ccb_ptr);

        ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
        ccb->ccb_h.status |=  CAM_REQUEUE_REQ;
        ccb->ccb_h.status |=  CAM_SCSI_BUS_RESET;

        tws_unmap_request(req->sc, req);

        mtx_lock(&sc->sim_lock);
        xpt_done(req->ccb_ptr);
        mtx_unlock(&sc->sim_lock);

        mtx_lock(&sc->q_lock);
        tws_q_insert_tail(sc, req, TWS_FREE_Q);
        req = tws_q_remove_tail(sc, TWS_BUSY_Q);
        mtx_unlock(&sc->q_lock);
    } 
}

コード例 #2

ファイル: tws_cam.c プロジェクト: kusumi/DragonFlyBSD

static void
tws_drain_busy_queue(struct tws_softc *sc)
{

    struct tws_request *req;
    TWS_TRACE_DEBUG(sc, "entry", 0, 0);

    lockmgr(&sc->q_lock, LK_EXCLUSIVE);
    req = tws_q_remove_tail(sc, TWS_BUSY_Q);
    lockmgr(&sc->q_lock, LK_RELEASE);
    while ( req ) {
	callout_stop(req->ccb_ptr->ccb_h.timeout_ch);
        tws_unmap_request(req->sc, req);

        TWS_TRACE_DEBUG(sc, "drained", 0, req->request_id);

        lockmgr(&sc->sim_lock, LK_EXCLUSIVE);
        req->ccb_ptr->ccb_h.status = CAM_REQUEUE_REQ;
        xpt_done(req->ccb_ptr);
        lockmgr(&sc->sim_lock, LK_RELEASE);

        lockmgr(&sc->q_lock, LK_EXCLUSIVE);
        tws_q_insert_tail(sc, req, TWS_FREE_Q);
        req = tws_q_remove_tail(sc, TWS_BUSY_Q);
        lockmgr(&sc->q_lock, LK_RELEASE);
    }

}