Make the synchronization module interfaces more generic

[lttv.git] / lttv / lttv / sync / data_structures.h

/* This file is part of the Linux Trace Toolkit viewer
 * Copyright (C) 2009 Benjamin Poirier <benjamin.poirier@polymtl.ca>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License Version 2 as
 * published by the Free Software Foundation;
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA 02111-1307, USA.
 */

#ifndef DATA_STRUCTURES_H
#define DATA_STRUCTURES_H

#include <glib.h>
#include <stdbool.h>
#include <stdint.h>

#include <ltt/ltt.h>

// Stage 1 to 2: These structures are passed from processing to matching modules
// TCP events
typedef struct
{
	uint32_t saddr, daddr;
	uint16_t source, dest;
} ConnectionKey;

typedef struct
{
	ConnectionKey connectionKey;
	uint8_t ihl;
	uint16_t tot_len;
	uint32_t seq, ack_seq;
	uint8_t doff;
	uint8_t ack, rst, syn, fin;
} SegmentKey;

enum Direction
{
	OUT,
	IN,
};

typedef struct
{
	enum Direction direction;
	SegmentKey* segmentKey;
} TCPEvent;

// UDP events
typedef struct
{
	uint32_t saddr, daddr;
	uint8_t dataKey[8];
} DatagramKey;

typedef struct
{
	enum Direction direction;
	DatagramKey* datagramKey;
	bool unicast;
} UDPEvent;

typedef struct _Event
{
	unsigned long traceNum;
	uint64_t time;

	// specific event structures and functions could be in separate files and
	// type could be an int
	enum {TCP, UDP} type;
	// event could be a void*, this union is to avoid having to cast
	union {
		TCPEvent* tcpEvent;
		UDPEvent* udpEvent;
	} event;

	void (*destroy)(struct _Event* const event);
} Event;

// Stage 2 to 3: These structures are passed from matching to analysis modules
typedef struct _Message
{
	Event* inE, * outE;

	void (*print)(const struct _Message* const message);
} Message;

typedef struct
{
	Message* message;
	GQueue* acks;
} Exchange;

typedef struct
{
	GQueue* events;
} Broadcast;

// One set of factors for each trace, this is the result of synchronization
typedef struct
{
	double drift, offset;
} Factors;


// ConnectionKey-related functions
guint ghfConnectionKeyHash(gconstpointer key);

gboolean gefConnectionKeyEqual(gconstpointer a, gconstpointer b);
bool connectionKeyEqual(const ConnectionKey* const a, const ConnectionKey*
	const b);

void gdnConnectionKeyDestroy(gpointer data);

// SegmentKey-related functions
guint ghfSegmentKeyHash(gconstpointer key);
gboolean gefSegmentKeyEqual(gconstpointer a, gconstpointer b);

// Event-related functions
void gdnDestroyEvent(gpointer data);
void destroyEvent(Event* const event);
void destroyTCPEvent(Event* const event);
void destroyUDPEvent(Event* const event);

// Message-related functions
void printTCPSegment(const Message* const segment);
void convertIP(char* const str, const uint32_t addr);

gint gcfTCPSegmentAckCompare(gconstpointer a, gconstpointer b);
bool isAcking(const Message* const ackSegment, const Message* const ackedSegment);

void gdnTCPSegmentListDestroy(gpointer data);
void gfTCPSegmentDestroy(gpointer data, gpointer user_data);
void destroyTCPSegment(Message* const segment);

// Exchange-related functions
void destroyTCPExchange(Exchange* const exchange);
#endif