C++ TRACE_OUT函数代码示例

static int
on_mp_read_session_read_response_write2(struct query_state *qstate)
{
	struct cache_mp_read_session_read_response *read_response;
	ssize_t	result;

	TRACE_IN(on_mp_read_session_read_response_write2);
	read_response = get_cache_mp_read_session_read_response(
		&qstate->response);
	result = qstate->write_func(qstate, read_response->data,
		read_response->data_size);
	if (result < 0 || (size_t)result != qstate->kevent_watermark) {
		LOG_ERR_3("on_mp_read_session_read_response_write2",
			"write failed");
		TRACE_OUT(on_mp_read_session_read_response_write2);
		return (-1);
	}

	finalize_comm_element(&qstate->request);
	finalize_comm_element(&qstate->response);

	qstate->kevent_watermark = sizeof(int);
	qstate->process_func = on_mp_read_session_mapper;
	qstate->kevent_filter = EVFILT_READ;

	TRACE_OUT(on_mp_read_session_read_response_write2);
	return (0);
}

/*
 * on_rw_mapper is used to process multiple read/write requests during
 * one connection session. It's never called in the beginning (on query_state
 * creation) as it does not process the multipart requests and does not
 * receive credentials
 */
static int
on_rw_mapper(struct query_state *qstate)
{
	ssize_t	result;
	int	elem_type;

	TRACE_IN(on_rw_mapper);
	if (qstate->kevent_watermark == 0) {
		qstate->kevent_watermark = sizeof(int);
	} else {
		result = qstate->read_func(qstate, &elem_type, sizeof(int));
		if (result != sizeof(int)) {
			TRACE_OUT(on_rw_mapper);
			return (-1);
		}

		switch (elem_type) {
		case CET_WRITE_REQUEST:
			qstate->kevent_watermark = sizeof(size_t);
			qstate->process_func = on_write_request_read1;
		break;
		case CET_READ_REQUEST:
			qstate->kevent_watermark = sizeof(size_t);
			qstate->process_func = on_read_request_read1;
		break;
		default:
			TRACE_OUT(on_rw_mapper);
			return (-1);
		break;
		}
	}
	TRACE_OUT(on_rw_mapper);
	return (0);
}

static int __post_summary_for_contest(unsigned int contestid)
{
  u32 iterhi, iterlo; int rc = -1;
  unsigned int packets, swucount;
  struct timeval ttime;

  TRACE_OUT((+1,"__post_summary_for_contest(%u)\n",contestid));

  if (CliGetContestInfoSummaryData( contestid, &packets, &iterhi, &iterlo,
                                    &ttime, &swucount ) == 0)
  {
    if (packets)
    {
      char ratebuf[15];
      TRACE_OUT((0,"pkts=%u, iter=%u:%u, time=%lu:%lu, swucount=%u\n", packets,
                    iterhi, iterlo, ttime.tv_sec, ttime.tv_usec, swucount ));
      Log("%s: Summary: %u packet%s (%u.%02u stats units)\n%s%c- [%s/s]\n",
          CliGetContestNameFromID(contestid),
          packets, ((packets==1)?(""):("s")),
          swucount/100, swucount%100,
          CliGetTimeString(&ttime,2), ((packets)?(' '):(0)),
          ProblemComputeRate( contestid, ttime.tv_sec, ttime.tv_usec,
                            iterhi, iterlo, 0, 0, ratebuf, sizeof(ratebuf)) );
    }
    rc = 0;
  }

  TRACE_OUT((-1,"__post_summary_for_contest()\n"));
  return rc;
}

static int
on_write_response_write1(struct query_state *qstate)
{
	struct cache_write_response	*write_response;
	ssize_t	result;

	TRACE_IN(on_write_response_write1);
	write_response = get_cache_write_response(&qstate->response);
	result = qstate->write_func(qstate, &write_response->error_code,
		sizeof(int));
	if (result != sizeof(int)) {
		TRACE_OUT(on_write_response_write1);
		return (-1);
	}

	finalize_comm_element(&qstate->request);
	finalize_comm_element(&qstate->response);

	qstate->kevent_watermark = sizeof(int);
	qstate->kevent_filter = EVFILT_READ;
	qstate->process_func = on_rw_mapper;

	TRACE_OUT(on_write_response_write1);
	return (0);
}

static int
on_write_request_read2(struct query_state *qstate)
{
	struct cache_write_request	*write_request;
	ssize_t	result;

	TRACE_IN(on_write_request_read2);
	write_request = get_cache_write_request(&qstate->request);

	result = qstate->read_func(qstate, write_request->entry,
		write_request->entry_length);
	result += qstate->read_func(qstate, write_request->cache_key +
		qstate->eid_str_length, write_request->cache_key_size);
	if (write_request->data_size != 0)
		result += qstate->read_func(qstate, write_request->data,
			write_request->data_size);

	if (result != qstate->kevent_watermark) {
		TRACE_OUT(on_write_request_read2);
		return (-1);
	}
	write_request->cache_key_size += qstate->eid_str_length;

	qstate->kevent_watermark = 0;
	if (write_request->data_size != 0)
		qstate->process_func = on_write_request_process;
	else
		qstate->process_func = on_negative_write_request_process;
	TRACE_OUT(on_write_request_read2);
	return (0);
}

static int
on_read_request_read2(struct query_state *qstate)
{
	struct cache_read_request	*read_request;
	ssize_t	result;

	TRACE_IN(on_read_request_read2);
	read_request = get_cache_read_request(&qstate->request);

	result = qstate->read_func(qstate, read_request->entry,
		read_request->entry_length);
	result += qstate->read_func(qstate,
		read_request->cache_key + qstate->eid_str_length,
		read_request->cache_key_size);

	if (result != qstate->kevent_watermark) {
		TRACE_OUT(on_read_request_read2);
		return (-1);
	}
	read_request->cache_key_size += qstate->eid_str_length;

	qstate->kevent_watermark = 0;
	qstate->process_func = on_read_request_process;

	TRACE_OUT(on_read_request_read2);
	return (0);
}

static int
on_read_response_write1(struct query_state *qstate)
{
	struct cache_read_response	*read_response;
	ssize_t	result;

	TRACE_IN(on_read_response_write1);
	read_response = get_cache_read_response(&qstate->response);

	result = qstate->write_func(qstate, &read_response->error_code,
		sizeof(int));

	if (read_response->error_code == 0) {
		result += qstate->write_func(qstate, &read_response->data_size,
			sizeof(size_t));
		if (result != qstate->kevent_watermark) {
			TRACE_OUT(on_read_response_write1);
			return (-1);
		}

		qstate->kevent_watermark = read_response->data_size;
		qstate->process_func = on_read_response_write2;
	} else {
		if (result != qstate->kevent_watermark) {
			TRACE_OUT(on_read_response_write1);
			return (-1);
		}

		qstate->kevent_watermark = 0;
		qstate->process_func = NULL;
	}

	TRACE_OUT(on_read_response_write1);
	return (0);
}

static int
on_read_response_write2(struct query_state *qstate)
{
	struct cache_read_response	*read_response;
	ssize_t	result;

	TRACE_IN(on_read_response_write2);
	read_response = get_cache_read_response(&qstate->response);
	if (read_response->data_size > 0) {
		result = qstate->write_func(qstate, read_response->data,
			read_response->data_size);
		if (result != qstate->kevent_watermark) {
			TRACE_OUT(on_read_response_write2);
			return (-1);
		}
	}

	finalize_comm_element(&qstate->request);
	finalize_comm_element(&qstate->response);

	qstate->kevent_watermark = sizeof(int);
	qstate->kevent_filter = EVFILT_READ;
	qstate->process_func = on_rw_mapper;
	TRACE_OUT(on_read_response_write2);
	return (0);
}

/*
 * The functions below are used to process write requests.
 * - on_write_request_read1 and on_write_request_read2 read the request itself
 * - on_write_request_process processes it (if the client requests to
 *    cache the negative result, the on_negative_write_request_process is used)
 * - on_write_response_write1 sends the response
 */
static int
on_write_request_read1(struct query_state *qstate)
{
	struct cache_write_request	*write_request;
	ssize_t	result;

	TRACE_IN(on_write_request_read1);
	if (qstate->kevent_watermark == 0)
		qstate->kevent_watermark = sizeof(size_t) * 3;
	else {
		init_comm_element(&qstate->request, CET_WRITE_REQUEST);
		write_request = get_cache_write_request(&qstate->request);

		result = qstate->read_func(qstate, &write_request->entry_length,
			sizeof(size_t));
		result += qstate->read_func(qstate,
			&write_request->cache_key_size, sizeof(size_t));
		result += qstate->read_func(qstate,
			&write_request->data_size, sizeof(size_t));

		if (result != sizeof(size_t) * 3) {
			TRACE_OUT(on_write_request_read1);
			return (-1);
		}

		if (BUFSIZE_INVALID(write_request->entry_length) ||
			BUFSIZE_INVALID(write_request->cache_key_size) ||
			(BUFSIZE_INVALID(write_request->data_size) &&
			(write_request->data_size != 0))) {
			TRACE_OUT(on_write_request_read1);
			return (-1);
		}

		write_request->entry = (char *)calloc(1,
			write_request->entry_length + 1);
		assert(write_request->entry != NULL);

		write_request->cache_key = (char *)calloc(1,
			write_request->cache_key_size +
			qstate->eid_str_length);
		assert(write_request->cache_key != NULL);
		memcpy(write_request->cache_key, qstate->eid_str,
			qstate->eid_str_length);

		if (write_request->data_size != 0) {
			write_request->data = (char *)calloc(1,
				write_request->data_size);
			assert(write_request->data != NULL);
		}

		qstate->kevent_watermark = write_request->entry_length +
			write_request->cache_key_size +
			write_request->data_size;
		qstate->process_func = on_write_request_read2;
	}

	TRACE_OUT(on_write_request_read1);
	return (0);
}

bool Pattern::Compare(const wchar_t* wildStr, int wildOff, const wchar_t* rawStr, int rawOff)
{
#ifdef TRACING
	std::wcout << std::endl << "\tCompare: " << TRACE_OUT(wildStr) << TRACE_OUT(wildOff) << TRACE_OUT(rawStr) << TRACE_OUT(rawOff) << std::endl;
#endif

    const wchar_t EOS = L'\0';
    while (wildStr[wildOff])
    {
        if (rawStr[rawOff] == EOS)
            return (wcscmp(wildStr+wildOff, L"*") == 0);

        if (wildStr[wildOff] == L'*')
        {
            if (wildStr[wildOff + 1] == EOS)
                return true;

            do
            {
                // Find match with char after '*'
                while (rawStr[rawOff] && 
                    !Pattern::ChrCmp(rawStr[rawOff], wildStr[wildOff+1]))
                    rawOff++;
                if (rawStr[rawOff] &&
                    Compare(wildStr, wildOff + 1, rawStr, rawOff))
                        return true;
                if (rawStr[rawOff])
                    ++rawOff;
            } while (rawStr[rawOff]);

            if (rawStr[rawOff] == EOS)
                return (wcscmp(wildStr+wildOff+1,  L"*") == 0);
        }
        else if (wildStr[wildOff] == L'?')
        {
            if (rawStr[rawOff] == EOS)
                return false;
            rawOff++;
        }
        else
        {
            if (!Pattern::ChrCmp(rawStr[rawOff], wildStr[wildOff]))
                return false;
            if (wildStr[wildOff] == EOS)
                return true;
            ++rawOff;
        }

        ++wildOff;
    }

    return (wildStr[wildOff] == rawStr[rawOff]);
}

/*
 * The functions below are used to process write requests.
 * - on_transform_request_read1 and on_transform_request_read2 read the
 *   request itself
 * - on_transform_request_process processes it
 * - on_transform_response_write1 sends the response
 */
static int
on_transform_request_read1(struct query_state *qstate)
{
	struct cache_transform_request *transform_request;
	ssize_t	result;

	TRACE_IN(on_transform_request_read1);
	if (qstate->kevent_watermark == 0)
		qstate->kevent_watermark = sizeof(size_t) + sizeof(int);
	else {
		init_comm_element(&qstate->request, CET_TRANSFORM_REQUEST);
		transform_request =
			get_cache_transform_request(&qstate->request);

		result = qstate->read_func(qstate,
			&transform_request->entry_length, sizeof(size_t));
		result += qstate->read_func(qstate,
			&transform_request->transformation_type, sizeof(int));

		if (result != sizeof(size_t) + sizeof(int)) {
			TRACE_OUT(on_transform_request_read1);
			return (-1);
		}

		if ((transform_request->transformation_type != TT_USER) &&
		    (transform_request->transformation_type != TT_ALL)) {
			TRACE_OUT(on_transform_request_read1);
			return (-1);
		}

		if (transform_request->entry_length != 0) {
			if (BUFSIZE_INVALID(transform_request->entry_length)) {
				TRACE_OUT(on_transform_request_read1);
				return (-1);
			}

			transform_request->entry = (char *)calloc(1,
				transform_request->entry_length + 1);
			assert(transform_request->entry != NULL);

			qstate->process_func = on_transform_request_read2;
		} else
			qstate->process_func = on_transform_request_process;

		qstate->kevent_watermark = transform_request->entry_length;
	}

	TRACE_OUT(on_transform_request_read1);
	return (0);
}

/*
 * The functions below are used to process read requests.
 * - on_read_request_read1 and on_read_request_read2 read the request itself
 * - on_read_request_process processes it
 * - on_read_response_write1 and on_read_response_write2 send the response
 */
static int
on_read_request_read1(struct query_state *qstate)
{
	struct cache_read_request *read_request;
	ssize_t	result;

	TRACE_IN(on_read_request_read1);
	if (qstate->kevent_watermark == 0)
		qstate->kevent_watermark = sizeof(size_t) * 2;
	else {
		init_comm_element(&qstate->request, CET_READ_REQUEST);
		read_request = get_cache_read_request(&qstate->request);

		result = qstate->read_func(qstate,
			&read_request->entry_length, sizeof(size_t));
		result += qstate->read_func(qstate,
			&read_request->cache_key_size, sizeof(size_t));

		if (result != sizeof(size_t) * 2) {
			TRACE_OUT(on_read_request_read1);
			return (-1);
		}

		if (BUFSIZE_INVALID(read_request->entry_length) ||
			BUFSIZE_INVALID(read_request->cache_key_size)) {
			TRACE_OUT(on_read_request_read1);
			return (-1);
		}

		read_request->entry = (char *)calloc(1,
			read_request->entry_length + 1);
		assert(read_request->entry != NULL);

		read_request->cache_key = (char *)calloc(1,
			read_request->cache_key_size +
			qstate->eid_str_length);
		assert(read_request->cache_key != NULL);
		memcpy(read_request->cache_key, qstate->eid_str,
			qstate->eid_str_length);

		qstate->kevent_watermark = read_request->entry_length +
			read_request->cache_key_size;
		qstate->process_func = on_read_request_read2;
	}

	TRACE_OUT(on_read_request_read1);
	return (0);
}

static struct cache_policy_item_ *
cache_lfu_policy_get_next_item(struct cache_policy_ *policy,
	struct cache_policy_item_ *item)
{
	struct cache_lfu_policy_ *lfu_policy;
	struct cache_lfu_policy_item_ *lfu_item;
	int i;

	TRACE_IN(cache_lfu_policy_get_next_item);
	lfu_policy = (struct cache_lfu_policy_ *)policy;
	lfu_item = TAILQ_NEXT((struct cache_lfu_policy_item_ *)item, entries);
	if (lfu_item == NULL)
	{
		for (i = ((struct cache_lfu_policy_item_ *)item)->frequency + 1;
			i < CACHELIB_MAX_FREQUENCY; ++i) {
			if (!TAILQ_EMPTY(&(lfu_policy->groups[i]))) {
			    lfu_item = TAILQ_FIRST(&(lfu_policy->groups[i]));
			    break;
			}
		}
	}

	TRACE_OUT(cache_lfu_policy_get_next_item);
	return ((struct cache_policy_item_ *)lfu_item);
}

/*
 * Clears the specified configuration entry (clears the cache for positive and
 * and negative entries) and also for all multipart entries.
 */
static void
clear_config_entry(struct configuration_entry *config_entry)
{
	size_t i;

	TRACE_IN(clear_config_entry);
	configuration_lock_entry(config_entry, CELT_POSITIVE);
	if (config_entry->positive_cache_entry != NULL)
		transform_cache_entry(
			config_entry->positive_cache_entry,
			CTT_CLEAR);
	configuration_unlock_entry(config_entry, CELT_POSITIVE);

	configuration_lock_entry(config_entry, CELT_NEGATIVE);
	if (config_entry->negative_cache_entry != NULL)
		transform_cache_entry(
			config_entry->negative_cache_entry,
			CTT_CLEAR);
	configuration_unlock_entry(config_entry, CELT_NEGATIVE);

	configuration_lock_entry(config_entry, CELT_MULTIPART);
	for (i = 0; i < config_entry->mp_cache_entries_size; ++i)
		transform_cache_entry(
			config_entry->mp_cache_entries[i],
			CTT_CLEAR);
	configuration_unlock_entry(config_entry, CELT_MULTIPART);

	TRACE_OUT(clear_config_entry);
}

static struct cache_policy_item_ *
cache_lfu_policy_get_prev_item(struct cache_policy_ *policy,
	struct cache_policy_item_ *item)
{
	struct cache_lfu_policy_ *lfu_policy;
	struct cache_lfu_policy_item_ *lfu_item;
	int i;

	TRACE_IN(cache_lfu_policy_get_prev_item);
	lfu_policy = (struct cache_lfu_policy_ *)policy;
	lfu_item = TAILQ_PREV((struct cache_lfu_policy_item_ *)item,
		cache_lfu_policy_group_, entries);
	if (lfu_item == NULL)
	{
		for (i = ((struct cache_lfu_policy_item_ *)item)->frequency - 1;
			i >= 0; --i)
			if (!TAILQ_EMPTY(&(lfu_policy->groups[i]))) {
				lfu_item = TAILQ_LAST(&(lfu_policy->groups[i]),
					cache_lfu_policy_group_);
				break;
		}
	}

	TRACE_OUT(cache_lfu_policy_get_prev_item);
	return ((struct cache_policy_item_ *)lfu_item);
}