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/*
This file is part of GNUnet.
Copyright (C) 2001-2014 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
* @author Christian Grothoff
* @file statistics/statistics.h
*/
#ifndef STATISTICS_H
#define STATISTICS_H
#include "gnunet_common.h"
GNUNET_NETWORK_STRUCT_BEGIN
/**
* Statistics message. Contains how long the system is up
* and one value.
*
* The struct is be followed by the service name and
* name of the statistic, both 0-terminated.
*/
struct GNUNET_STATISTICS_ReplyMessage
{
/**
* Type: GNUNET_MESSAGE_TYPE_STATISTICS_VALUE
*/
struct GNUNET_MessageHeader header;
/**
* Unique numerical identifier for the value (will
* not change during the same client-session). Highest
* bit will be set for persistent values (see
* #GNUNET_STATISTICS_PERSIST_BIT).
*/
uint32_t uid GNUNET_PACKED;
/**
* The value.
*/
uint64_t value GNUNET_PACKED;
};
/**
* Flag for the `struct GNUNET_STATISTICS_ReplyMessage` UID only.
* Note that other messages use #GNUNET_STATISTICS_SETFLAG_PERSISTENT.
*/
#define GNUNET_STATISTICS_PERSIST_BIT ((uint32_t) (1LLU<<31))
/**
* The value being set is an absolute change.
*/
#define GNUNET_STATISTICS_SETFLAG_ABSOLUTE 0
/**
* The value being set is a relative change.
*/
#define GNUNET_STATISTICS_SETFLAG_RELATIVE 1
/**
* The value being set is to be persistent (note that
* this bit can be combined with #GNUNET_STATISTICS_SETFLAG_RELATIVE).
* This value must not be used for the `uid` member of
* `struct GNUNET_STATISTICS_ReplyMessage`!
*/
#define GNUNET_STATISTICS_SETFLAG_PERSISTENT 2
/**
* Message to set a statistic. Followed
* by the subsystem name and the name of
* the statistic (each 0-terminated).
*/
struct GNUNET_STATISTICS_SetMessage
{
/**
* Type: #GNUNET_MESSAGE_TYPE_STATISTICS_SET
*/
struct GNUNET_MessageHeader header;
/**
* 0 for absolute value, 1 for relative value; 2 to make persistent
* (see GNUNET_STATISTICS_SETFLAG_*).
*/
uint32_t flags GNUNET_PACKED;
/**
* Value. Note that if this is a relative value, it will
* be signed even though the type given here is unsigned.
*/
uint64_t value GNUNET_PACKED;
};
/**
* Message transmitted if a watched value changes.
*/
struct GNUNET_STATISTICS_WatchValueMessage
{
/**
* Type: #GNUNET_MESSAGE_TYPE_STATISTICS_WATCH_VALUE
*/
struct GNUNET_MessageHeader header;
/**
* 0 for absolute value, 1 for relative value; 2 to make persistent
* (see GNUNET_STATISTICS_SETFLAG_*).
*/
uint32_t flags GNUNET_PACKED;
/**
* Unique watch identification number (watch
* requests are enumerated in the order they
* are received, the first request having
* a wid of zero).
*/
uint32_t wid GNUNET_PACKED;
/**
* Reserved (always 0).
*/
uint32_t reserved GNUNET_PACKED;
/**
* Value. Note that if this is a relative value, it will
* be signed even though the type given here is unsigned.
*/
uint64_t value GNUNET_PACKED;
};
GNUNET_NETWORK_STRUCT_END
#endif
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