C++ EPRINTF函數代碼示例

static int
remoteMouseHandler(mwlirc_keystroke * event, MWKEY * kbuf,
		   MWSCANCODE * pscancode)
{
	unsigned speed;
	unsigned dir;
	int len = 0;

	if ((sscanf(event->name, "m_%u_%u%n", &speed, &dir, &len) < 2)
	    || (len != strlen(event->name))
	    || (dir > 15)
	    || (speed > 15)) {
		EPRINTF("LIRC_Read() - Invalid mouse event '%s'\n",
		       event->name);
		return 0;
	}

	return LIRC_mouseMovedPolar(speed, dir);
}

void
GsSelect (GR_TIMEOUT timeout)
{
        struct MW_UID_MESSAGE m;
	int rc;

	/* perform pre-select duties, if any*/
	if (scrdev.PreSelect)
		scrdev.PreSelect (&scrdev);

	/* let's make sure that the type is invalid */
	m.type = MV_UID_INVALID;

	/* wait up for events */
	rc = uid_read_message (&m, timeout);

	/* return if timed-out or something went wrong */
	if (rc < 0) {
	        if (errno != ETIMEDOUT)
		        EPRINTF (" rc= %d, errno=%d\n", rc, errno);
		else {
		        /* timeout handling */
		}
		return;
	}

	/* let's pass the event up to Microwindows */
	switch (m.type) {
	case MV_UID_REL_POS:	/* Mouse or Touch Screen event */
	case MV_UID_ABS_POS:
	        m_mou = m;
		while (GsCheckMouseEvent ()) continue;
		break;
	case MV_UID_KBD:	/* KBD event */
	        m_kbd = m;
		GsCheckKeyboardEvent ();
		break;
	case MV_UID_TIMER:	/* Microwindows does nothing with these.. */
	case MV_UID_INVALID:
	default:
	        break;
	}
}

void
td_metrics_stop()
{
    if (!td_metrics.path)
        goto out;

    empty_folder(td_metrics.path);

    if (rmdir(td_metrics.path) == -1){
        EPRINTF("failed to delete metrics folder: %s\n", strerror(errno));
        goto out;
    }

    free(td_metrics.path);
    td_metrics.path = NULL;

out:
    return;
}

int
td_metrics_nbd_stop(stats_t *nbd_stats)
{
    int err = 0;

    if(!nbd_stats->shm.path)
        goto end;
    err = shm_destroy(&nbd_stats->shm);
    if (unlikely(err)) {
        err = errno;
        EPRINTF("failed to destroy NBD metrics file: %s\n", strerror(err));
    }

    free(nbd_stats->shm.path);
    nbd_stats->shm.path = NULL;

end:
    return err;
}

static int
vbd_stats_destroy(td_vbd_t *vbd) {

    int err = 0;

    ASSERT(vbd);

    err = shm_destroy(&vbd->rrd.shm);
    if (unlikely(err)) {
        EPRINTF("failed to destroy RRD file: %s\n", strerror(err));
        goto out;
    }

    free(vbd->rrd.shm.path);
    vbd->rrd.shm.path = NULL;

out:
    return -err;
}

// allocate and a Stream and associate it with a suitable device.
//
static Stream *Stream_new(int dir)
{
  AudioDeviceID id= 0;
  Stream       *s=  0;

  if (!getDefaultDevice(&id, dir))
    return 0;	// no device available

  if (!(s= (Stream *)calloc(1, sizeof(Stream))))
    {
      EPRINTF("out of memory");
      return 0;
    }
  s->id=	id;
  s->direction= dir;
  DPRINTF("stream %p[%d] created for device %ld\n", s, dir, id);

  return s;
}

void
fb_io_device::display_thread (void)
{
    int             func_ret = 0;

    while(1)
    {

        wait (m_ev_display);

        //printf ("display()\n");

        /* if DMA in use */
        /* retrieve data */
        if (m_regs->m_dmaen)
        {
            uint32_t    offset;
            uint32_t    addr        = m_regs->m_buf_addr;
            uint8_t     *data       = m_io_res->mem;

            for (offset = 0; offset < m_io_res->mem_size; offset += 4)
            {
                func_ret = master->cmd_read (addr + offset, data + offset, 4);
                if (!func_ret)
                    break;
            }

            if (!func_ret)
                EPRINTF ("Error in Read\n");
            else
                DPRINTF ("Transfer complete\n");
        }

        kill (m_pid, SIGUSR1);

        if (m_regs->m_dmaen)
        {
            m_regs->m_irqstat |= FB_IO_IRQ_DMA;
            m_ev_irq_update.notify ();
        }
    }
}

    bool Pong::execute()
    {
        /* Read the pong message and output the count.
         */
        if(false == m_ping_subscription->get()) {
            EPRINTF("Error retreiving ping data\n");
        }
        if(m_ping_subscription->was_updated()) {
            IPRINTF("Pong gets %u from ping\n",
                    m_ping_subscription->content.count);
        }

        /* Increment and publish the pong count.
         */
        ++m_pong_publication->content.count;
        IPRINTF("Pong puts %u\n", m_pong_publication->content.count);
        m_pong_publication->put();

        return true;
    }

static int
PD_Open(MOUSEDEVICE * pmd)
{
	/*
	 * open up the touch-panel device.
	 * Return the fd if successful, or negative if unsuccessful.
	 */
	if ((pd_fd = open(DEVICE, O_NONBLOCK)) < 0) {
		EPRINTF("Error %d opening touch panel\n", errno);
		return -1;
	}

	/* This is the default transform for this device */
	/* We set it here, so that the system will come up normally */
	GdSetTransform(&default_transform);

	/* This should normally be disabled, but we leave it on for debugging */
	/*GdHideCursor(&scrdev);*/

	return pd_fd;
}

int
td_metrics_blktap_stop(stats_t *blktap_stats)
{
    int err = 0;

    if(!blktap_stats->shm.path)
        goto end;

    err = shm_destroy(&blktap_stats->shm);
    if (unlikely(err)) {
        err = errno;
        EPRINTF("failed to destroy blktap metrics file: %s\n", strerror(err));
    }

    free(blktap_stats->shm.path);
    blktap_stats->shm.path = NULL;

end:
    return err;

}

//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
JNIEXPORT void JNICALL Java_com_qualcomm_fastcvdemo_utils_FastCVSampleRenderer_render
(
   JNIEnv * env, 
   jobject obj, 
   jbyteArray img, 
   jint w, 
   jint h
)
{
   if( state.cameraRenderer == NULL )
   {
      state.cameraRenderer = new CameraRendererRGB565GL2();

      if (state.cameraRenderer)
      {
         state.cameraRenderer->Init();
      }
      else
      {
         EPRINTF( "Unable to get Camera Render object\n" );
      }
   }

   //if camera frame is ready, display that
   if( state.cameraRenderer && state.renderBufRGB565 )
   {
      lockRenderBuffer();
      state.cameraRenderer->Render
      (
         state.renderBufRGB565,
         state.renderBufWidth,
         state.renderBufHeight
      );
      unlockRenderBuffer();

      //glFlush();
      glFinish();
   }

}

int
tap_ctl_write_message(int fd, tapdisk_message_t * message,
                      struct timeval *timeout)
{
    fd_set writefds;
    int ret, len, offset;

    offset = 0;
    len = sizeof(tapdisk_message_t);

    DBG("sending '%s' message (uuid = %u)\n",
        tapdisk_message_name(message->type), message->cookie);

    while (offset < len) {
        FD_ZERO(&writefds);
        FD_SET(fd, &writefds);

        /* we don't bother reinitializing tv. at worst, it will wait a
         * bit more time than expected. */

        ret = select(fd + 1, NULL, &writefds, NULL, timeout);
        if (ret == -1)
            break;
        else if (FD_ISSET(fd, &writefds)) {
            ret = write(fd, message + offset, len - offset);
            if (ret <= 0)
                break;
            offset += ret;
        } else
            break;
    }

    if (offset != len) {
        EPRINTF("failure writing message\n");
        return -EIO;
    }

    return 0;
}

td_vbd_t*
tapdisk_vbd_create(uint16_t uuid)
{
	td_vbd_t *vbd;
	int i;

	vbd = calloc(1, sizeof(td_vbd_t));
	if (!vbd) {
		EPRINTF("failed to allocate tapdisk state\n");
		return NULL;
	}

	vbd->uuid     = uuid;
	vbd->minor    = -1;
	vbd->ring.fd  = -1;

	/* default blktap ring completion */
	vbd->callback = tapdisk_vbd_callback;
	vbd->argument = vbd;
    
#ifdef MEMSHR
	memshr_vbd_initialize();
#endif

	INIT_LIST_HEAD(&vbd->driver_stack);
	INIT_LIST_HEAD(&vbd->images);
	INIT_LIST_HEAD(&vbd->new_requests);
	INIT_LIST_HEAD(&vbd->pending_requests);
	INIT_LIST_HEAD(&vbd->failed_requests);
	INIT_LIST_HEAD(&vbd->completed_requests);
	INIT_LIST_HEAD(&vbd->next);
	gettimeofday(&vbd->ts, NULL);

	for (i = 0; i < MAX_REQUESTS; i++)
		tapdisk_vbd_initialize_vreq(vbd->request_list + i);

	return vbd;
}

    bool Task::spawn_thread()
    {
        Scheduler &sched = Scheduler::get_instance();

        /* If rategroup_sync is not NULL at this point, then the task has been
         * started previously and is already on the scheduler's list.
         */
        if(NULL != m_impl->rategroup_sync) {
            m_impl->first_pass = true;
        }
        else if(m_props.period && (this != &sched)) {
            m_impl->rategroup_sync = sched.add_task(*this);
            if(NULL == m_impl->rategroup_sync) {
                return false;
            }
        }

        /* Spawn the thread.
        */
        m_thread_syncpoint.lock();
        m_thread_syncpoint.condition_cleared();
        if(pthread_create(&(m_impl->tid), &(m_impl->attr), run,
                          reinterpret_cast<void *>(this)) != 0) {
            m_thread_syncpoint.unlock();
            EPRINTF("%s: Failed to spawn thread\n", m_name);
            return false;
        }

        /* We can't get the mutex back until the thread has released it. This
         * makes sure the the thread has completed it's initilization before
         * returning and allowing additional threads to be spawned.
         */
        m_thread_syncpoint.condition_cleared();
        m_thread_syncpoint.wait();
        m_thread_syncpoint.unlock();

        return true;
    }

static int PD_Read(MWCOORD *px, MWCOORD *py, MWCOORD *pz, int *pb)
{
	struct ts_sample samp;
	int ret;

	ret = ts_read(ts, &samp, 1);

	if (ret <= 0) {
		if (errno == EINTR || errno == EAGAIN)
			return 0;
		EPRINTF("Error reading from touchscreen: %s\n", strerror(errno));
		return -1;
	}

	*px = samp.x;
	*py = samp.y;
	*pb = (samp.pressure) ? MWBUTTON_L : 0;
	*pz = samp.pressure;

	if(!*pb)
		return 3;
	return 2;
}