[lttv.git] / lttv / lttv / traceset-process.c

/* This file is part of the Linux Trace Toolkit viewer
 * Copyright (C) 2003-2004 Michel Dagenais
 * Copyright (C) 2012 Yannick Brosseau
 *
 * 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.
 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <lttv/traceset-process.h>
#include <lttv/traceset.h>
#include <lttv/event.h>
#include <babeltrace/context.h>
#include <babeltrace/iterator.h>
#include <babeltrace/trace-handle.h>
#include <babeltrace/ctf/events.h>
#include <babeltrace/ctf/iterator.h>

void lttv_process_traceset_begin(LttvTraceset *traceset,
		LttvHooks *before_traceset,
		LttvHooks *before_trace,
		LttvHooks *event)
{
	struct bt_iter_pos begin_pos;
	/* simply add hooks in context. _before hooks are called by add_hooks. */
	/* It calls all before_traceset, before_trace, and before_tracefile hooks. */
	lttv_traceset_add_hooks(traceset,
				before_traceset,
				before_trace,
				event);
	

	begin_pos.type = BT_SEEK_BEGIN;

	if(!traceset->iter) {
        traceset->iter = bt_ctf_iter_create(lttv_traceset_get_context(traceset),
                                        &begin_pos,
                                        NULL);
	}
}

guint lttv_process_traceset_middle(LttvTraceset *traceset,
					LttTime end,
					gulong nb_events,
					const LttvTracesetPosition *end_position)
{
	unsigned count = 0;
	gint last_ret = 0;
	LttvTracesetPosition *currentPos;
        
	struct bt_ctf_event *bt_event;
	
	LttvEvent event;
  
	while(TRUE) {

		if(last_ret == TRUE || ((count >= nb_events) && (nb_events != G_MAXULONG))) {
			break;
		}

		if((bt_event = bt_ctf_iter_read_event(traceset->iter)) != NULL) {

			LttTime time = ltt_time_from_uint64(bt_ctf_get_timestamp(bt_event));
			if(ltt_time_compare(end, time) <= 0) {
				break;
			}
			
			currentPos = lttv_traceset_create_current_position(traceset);
			if(lttv_traceset_position_compare(currentPos,end_position ) == 0){
				lttv_traceset_destroy_position(currentPos);
				break;
			}
			lttv_traceset_destroy_position(currentPos);
			count++;

			event.bt_event = bt_event;

			/* Retreive the associated state */
			event.state = g_ptr_array_index(traceset->state_trace_handle_index,
							bt_ctf_event_get_handle_id(bt_event));
			
			last_ret = lttv_hooks_call(traceset->event_hooks, &event);

			if(bt_iter_next(bt_ctf_get_iter(traceset->iter)) < 0) {
				printf("ERROR NEXT\n");
				break;
			}
		} else {
			/* READ FAILED */
			
			break;
		
		}
	}
	return count;
}

void lttv_process_traceset_end(LttvTraceset *traceset,
			       LttvHooks *after_traceset,
			       LttvHooks *after_trace,	
			       LttvHooks *event)
{
	/* Remove hooks from context. _after hooks are called by remove_hooks. */
	/* It calls all after_traceset, after_trace, and after_tracefile hooks. */
	lttv_traceset_remove_hooks(traceset,
				   after_traceset,
				   after_trace,
				   event);

}


void lttv_traceset_add_hooks(LttvTraceset *traceset,
			     LttvHooks *before_traceset,
			     LttvHooks *before_trace,
			     LttvHooks *event)
{
	guint i, nb_trace;

	LttvTrace *trace;

	lttv_hooks_call(before_traceset, traceset);
	
	lttv_hooks_add_list(traceset->event_hooks, event);

	nb_trace = lttv_traceset_number(traceset);

	for(i = 0 ; i < nb_trace ; i++) {
		trace = (LttvTrace *)g_ptr_array_index(traceset->traces,i);
		lttv_trace_add_hooks(trace,
					     before_trace,
					     event
					     );
	}
}
void lttv_traceset_remove_hooks(LttvTraceset *traceset,
				LttvHooks *after_traceset,
				LttvHooks *after_trace,
				LttvHooks *event)
{
	guint i, nb_trace;

	LttvTrace *trace;

	nb_trace = lttv_traceset_number(traceset);

	for(i = 0 ; i < nb_trace ; i++) {
		trace = (LttvTrace *)g_ptr_array_index(traceset->traces,i);
		lttv_trace_remove_hooks(trace,
						after_trace,
						event);

	}

	lttv_hooks_remove_list(traceset->event_hooks, event);
	lttv_hooks_call(after_traceset, traceset);


}


void lttv_trace_add_hooks(LttvTrace *trace,
			  LttvHooks *before_trace,
			  LttvHooks *event)
{
	lttv_hooks_call(before_trace, trace);
}

void lttv_trace_remove_hooks(LttvTrace *trace,
			     LttvHooks *after_trace,
			     LttvHooks *event)

{
	lttv_hooks_call(after_trace, trace);
}

void lttv_process_traceset_seek_time(LttvTraceset *traceset, LttTime start)
{
        struct bt_iter_pos seekpos;
        int ret;
	if (traceset->iter == NULL) {
		g_warning("Iterator not valid in seek_time");
		return;
	}
        seekpos.type = BT_SEEK_TIME;
        seekpos.u.seek_time = ltt_time_to_uint64(start);

        ret = bt_iter_set_pos(bt_ctf_get_iter(traceset->iter), &seekpos);
        if(ret < 0) {
                printf("Seek by time error: %s,\n",strerror(-ret));
        }
}

guint lttv_process_traceset_seek_n_forward(LttvTraceset *traceset,
                guint n,
                check_handler *check,
                gboolean *stop_flag,
                LttvFilter *filter1,
                LttvFilter *filter2,
                LttvFilter *filter3,
                gpointer data)
{
        unsigned count = 0;
        while(count < n) {
		if(bt_iter_next(bt_ctf_get_iter(traceset->iter)) < 0) {
			printf("ERROR NEXT\n");
			break;
		}
		count++;
        }
      return count;  
}

guint lttv_process_traceset_seek_n_backward(LttvTraceset *ts,
                guint n,
                gdouble ratio,
                check_handler *check,
                gboolean *stop_flag,
                LttvFilter *filter1,
                LttvFilter *filter2,
                LttvFilter *filter3,
                gpointer data)
{
        guint i, count, ret;
        gint extraEvent = 0;
        guint64 initialTimeStamp, previousTimeStamp;
        LttvTracesetPosition *initialPos, *previousPos, *currentPos, beginPos;
        struct bt_iter_pos pos;
        beginPos.bt_pos = &pos;
        beginPos.iter = ts->iter;
        beginPos.bt_pos->type = BT_SEEK_BEGIN;
        beginPos.timestamp = G_MAXUINT64;
        beginPos.cpu_id = INT_MAX;
        /*Save initial position of the traceset*/
        initialPos = lttv_traceset_create_current_position (ts);
        
        /*Get the timespan of the initial position*/
        initialTimeStamp = lttv_traceset_position_get_timestamp(initialPos);
        /* 
         * Create a position before the initial timestamp according
         * to the ratio of nanosecond/event hopefully before the
         * the desired seek position
         */
        while(1){
		previousTimeStamp = initialTimeStamp - n*(guint)ceil(ratio);

		previousPos = lttv_traceset_create_time_position(ts,ltt_time_from_uint64(previousTimeStamp));
		if(initialTimeStamp == previousTimeStamp)
			break;
                
                currentPos = lttv_traceset_create_time_position(ts,ltt_time_from_uint64(previousTimeStamp));
                /*Corner case: When we are near the beginning of the trace and the previousTimeStamp is before
                        * the beginning of the trace. We have to seek to the first event.
                        */
                if((lttv_traceset_position_compare(currentPos,&beginPos ) == 0)){
                                lttv_traceset_seek_to_position(&beginPos);
                                break;
                        }
                /*move traceset position */
                lttv_state_traceset_seek_position(ts, previousPos);
                /* iterate to the initial position counting the number of event*/
                count = 0;
                do {
                        if((ret = lttv_traceset_position_compare(currentPos,initialPos)) == 1){       
				if(bt_iter_next(bt_ctf_get_iter(ts->iter)) == 0) {
					if(bt_ctf_iter_read_event(ts->iter) != NULL) {
					lttv_traceset_destroy_position(currentPos);
					currentPos = lttv_traceset_create_current_position(ts);
					count++;
					} else  {
						break;
					}
					
				} else {

					//No more event available
					break;
				}
                        }
                }while(ret != 0);
                
                /*substract the desired number of event to the count*/
                extraEvent = count - n;
                if (extraEvent >= 0) {
                        //if the extraEvent is over 0 go back to previousPos and 
                        //move forward the value of extraEvent times
                        lttv_state_traceset_seek_position(ts, previousPos);
                        
                        for(i = 0 ; i < extraEvent ; i++){
                                if(bt_iter_next(bt_ctf_get_iter(ts->iter)) < 0){
                                        printf("ERROR NEXT\n");
                                        break;
                                }
                                
                        }
                        break; /* we successfully seeked backward */
                }
                else{ 
                        /* if the extraEvent is below 0 create a position before and start over*/  
			ratio = ratio * 16;
                }
                lttv_traceset_destroy_position(currentPos);
        }
        return 0;
}
Commit	Line	Data
7a4bdb54 YB	1	/* This file is part of the Linux Trace Toolkit viewer
	2	* Copyright (C) 2003-2004 Michel Dagenais
	3	* Copyright (C) 2012 Yannick Brosseau
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License Version 2 as
	7	* published by the Free Software Foundation;
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 59 Temple Place - Suite 330, Boston,
	17	* MA 02111-1307, USA.
	18	*/
	19	#ifdef HAVE_CONFIG_H
	20	#include <config.h>
	21	#endif
	22
	23	#include <lttv/traceset-process.h>
	24	#include <lttv/traceset.h>
	25	#include <lttv/event.h>
	26	#include <babeltrace/context.h>
	27	#include <babeltrace/iterator.h>
9a366873	28	#include <babeltrace/trace-handle.h>
7a4bdb54 YB	29	#include <babeltrace/ctf/events.h>
	30	#include <babeltrace/ctf/iterator.h>
	31
	32	void lttv_process_traceset_begin(LttvTraceset *traceset,
	33	LttvHooks *before_traceset,
	34	LttvHooks *before_trace,
	35	LttvHooks *event)
	36	{
f1e5df2a	37	struct bt_iter_pos begin_pos;
7a4bdb54 YB	38	/* simply add hooks in context. _before hooks are called by add_hooks. */
	39	/* It calls all before_traceset, before_trace, and before_tracefile hooks. */
	40	lttv_traceset_add_hooks(traceset,
	41	before_traceset,
	42	before_trace,
	43	event);
	44
	45
f1e5df2a YB	46
	47	begin_pos.type = BT_SEEK_BEGIN;
	48
	49	if(!traceset->iter) {
	50	traceset->iter = bt_ctf_iter_create(lttv_traceset_get_context(traceset),
	51	&begin_pos,
	52	NULL);
	53	}
7a4bdb54 YB	54	}
	55
	56	guint lttv_process_traceset_middle(LttvTraceset *traceset,
9a366873 FD	57	LttTime end,
	58	gulong nb_events,
	59	const LttvTracesetPosition *end_position)
7a4bdb54	60	{
7a4bdb54	61	unsigned count = 0;
9a366873 FD	62	gint last_ret = 0;
	63	LttvTracesetPosition *currentPos;
	64
7a4bdb54 YB	65	struct bt_ctf_event *bt_event;
	66
	67	LttvEvent event;
f1e5df2a	68
7a4bdb54 YB	69	while(TRUE) {
7a4bdb54 YB	70
9a366873	71	if(last_ret == TRUE \|\| ((count >= nb_events) && (nb_events != G_MAXULONG))) {
7a4bdb54 YB	72	break;
	73	}
	74
	75	if((bt_event = bt_ctf_iter_read_event(traceset->iter)) != NULL) {
9a366873	76
762e15b0	77	LttTime time = ltt_time_from_uint64(bt_ctf_get_timestamp(bt_event));
9a366873 FD	78	if(ltt_time_compare(end, time) <= 0) {
	79	break;
	80	}
7a4bdb54	81
68573dd0	82	currentPos = lttv_traceset_create_current_position(traceset);
9a366873 FD	83	if(lttv_traceset_position_compare(currentPos,end_position ) == 0){
9a366873 FD	84	lttv_traceset_destroy_position(currentPos);
2dd99ee2 YB	85	break;
2dd99ee2 YB	86	}
9a366873	87	lttv_traceset_destroy_position(currentPos);
7a4bdb54 YB	88	count++;
	89
	90	event.bt_event = bt_event;
115c78c2 YB	91
	92	/* Retreive the associated state */
	93	event.state = g_ptr_array_index(traceset->state_trace_handle_index,
	94	bt_ctf_event_get_handle_id(bt_event));
7a4bdb54	95
9a366873	96	last_ret = lttv_hooks_call(traceset->event_hooks, &event);
7a4bdb54 YB	97
	98	if(bt_iter_next(bt_ctf_get_iter(traceset->iter)) < 0) {
	99	printf("ERROR NEXT\n");
	100	break;
	101	}
	102	} else {
	103	/* READ FAILED */
	104
	105	break;
	106
	107	}
	108	}
7a4bdb54 YB	109	return count;
	110	}
	111
	112	void lttv_process_traceset_end(LttvTraceset *traceset,
	113	LttvHooks *after_traceset,
	114	LttvHooks *after_trace,
	115	LttvHooks *event)
	116	{
	117	/* Remove hooks from context. _after hooks are called by remove_hooks. */
	118	/* It calls all after_traceset, after_trace, and after_tracefile hooks. */
	119	lttv_traceset_remove_hooks(traceset,
	120	after_traceset,
	121	after_trace,
	122	event);
	123
	124	}
	125
	126
	127	void lttv_traceset_add_hooks(LttvTraceset *traceset,
	128	LttvHooks *before_traceset,
	129	LttvHooks *before_trace,
	130	LttvHooks *event)
	131	{
7a4bdb54 YB	132	guint i, nb_trace;
	133
	134	LttvTrace *trace;
	135
	136	lttv_hooks_call(before_traceset, traceset);
	137
	138	lttv_hooks_add_list(traceset->event_hooks, event);
	139
	140	nb_trace = lttv_traceset_number(traceset);
	141
	142	for(i = 0 ; i < nb_trace ; i++) {
	143	trace = (LttvTrace *)g_ptr_array_index(traceset->traces,i);
	144	lttv_trace_add_hooks(trace,
	145	before_trace,
	146	event
	147	);
	148	}
	149	}
	150	void lttv_traceset_remove_hooks(LttvTraceset *traceset,
	151	LttvHooks *after_traceset,
	152	LttvHooks *after_trace,
	153	LttvHooks *event)
	154	{
7a4bdb54 YB	155	guint i, nb_trace;
	156
	157	LttvTrace *trace;
	158
	159	nb_trace = lttv_traceset_number(traceset);
	160
	161	for(i = 0 ; i < nb_trace ; i++) {
	162	trace = (LttvTrace *)g_ptr_array_index(traceset->traces,i);
	163	lttv_trace_remove_hooks(trace,
	164	after_trace,
	165	event);
	166
	167	}
	168
9a366873	169	lttv_hooks_remove_list(traceset->event_hooks, event);
7a4bdb54 YB	170	lttv_hooks_call(after_traceset, traceset);
	171
	172
	173	}
	174
	175
	176	void lttv_trace_add_hooks(LttvTrace *trace,
	177	LttvHooks *before_trace,
	178	LttvHooks *event)
	179	{
	180	lttv_hooks_call(before_trace, trace);
	181	}
	182
	183	void lttv_trace_remove_hooks(LttvTrace *trace,
	184	LttvHooks *after_trace,
	185	LttvHooks *event)
	186
	187	{
	188	lttv_hooks_call(after_trace, trace);
7a4bdb54 YB	189	}
	190
	191	void lttv_process_traceset_seek_time(LttvTraceset *traceset, LttTime start)
	192	{
7a4bdb54 YB	193	struct bt_iter_pos seekpos;
7a4bdb54 YB	194	int ret;
f1e5df2a YB	195	if (traceset->iter == NULL) {
	196	g_warning("Iterator not valid in seek_time");
	197	return;
	198	}
7a4bdb54 YB	199	seekpos.type = BT_SEEK_TIME;
7a4bdb54 YB	200	seekpos.u.seek_time = ltt_time_to_uint64(start);
f1e5df2a YB	201
f1e5df2a YB	202	ret = bt_iter_set_pos(bt_ctf_get_iter(traceset->iter), &seekpos);
7a4bdb54 YB	203	if(ret < 0) {
	204	printf("Seek by time error: %s,\n",strerror(-ret));
	205	}
9a366873 FD	206	}
	207
	208	guint lttv_process_traceset_seek_n_forward(LttvTraceset *traceset,
	209	guint n,
	210	check_handler *check,
	211	gboolean *stop_flag,
	212	LttvFilter *filter1,
	213	LttvFilter *filter2,
	214	LttvFilter *filter3,
	215	gpointer data)
	216	{
9a366873 FD	217	unsigned count = 0;
	218	while(count < n) {
	219	if(bt_iter_next(bt_ctf_get_iter(traceset->iter)) < 0) {
	220	printf("ERROR NEXT\n");
	221	break;
	222	}
	223	count++;
	224	}
	225	return count;
	226	}
	227
	228	guint lttv_process_traceset_seek_n_backward(LttvTraceset *ts,
	229	guint n,
	230	gdouble ratio,
	231	check_handler *check,
	232	gboolean *stop_flag,
	233	LttvFilter *filter1,
	234	LttvFilter *filter2,
	235	LttvFilter *filter3,
	236	gpointer data)
	237	{
	238	guint i, count, ret;
	239	gint extraEvent = 0;
	240	guint64 initialTimeStamp, previousTimeStamp;
88bf15f0 FD	241	LttvTracesetPosition initialPos, previousPos, *currentPos, beginPos;
	242	struct bt_iter_pos pos;
	243	beginPos.bt_pos = &pos;
	244	beginPos.iter = ts->iter;
	245	beginPos.bt_pos->type = BT_SEEK_BEGIN;
c73ce169 FD	246	beginPos.timestamp = G_MAXUINT64;
c73ce169 FD	247	beginPos.cpu_id = INT_MAX;
9a366873	248	/Save initial position of the traceset/
68573dd0	249	initialPos = lttv_traceset_create_current_position (ts);
9a366873 FD	250
	251	/Get the timespan of the initial position/
	252	initialTimeStamp = lttv_traceset_position_get_timestamp(initialPos);
	253	/*
	254	* Create a position before the initial timestamp according
68573dd0	255	* to the ratio of nanosecond/event hopefully before the
9a366873 FD	256	* the desired seek position
	257	*/
	258	while(1){
	259	previousTimeStamp = initialTimeStamp - n*(guint)ceil(ratio);
	260
	261	previousPos = lttv_traceset_create_time_position(ts,ltt_time_from_uint64(previousTimeStamp));
	262	if(initialTimeStamp == previousTimeStamp)
	263	break;
	264
	265	currentPos = lttv_traceset_create_time_position(ts,ltt_time_from_uint64(previousTimeStamp));
88bf15f0 FD	266	/*Corner case: When we are near the beginning of the trace and the previousTimeStamp is before
	267	* the beginning of the trace. We have to seek to the first event.
	268	*/
	269	if((lttv_traceset_position_compare(currentPos,&beginPos ) == 0)){
	270	lttv_traceset_seek_to_position(&beginPos);
	271	break;
	272	}
9a366873	273	/move traceset position /
58b4e4ae	274	lttv_state_traceset_seek_position(ts, previousPos);
9a366873 FD	275	/* iterate to the initial position counting the number of event*/
	276	count = 0;
	277	do {
	278	if((ret = lttv_traceset_position_compare(currentPos,initialPos)) == 1){
993046ef YB	279	if(bt_iter_next(bt_ctf_get_iter(ts->iter)) == 0) {
	280	if(bt_ctf_iter_read_event(ts->iter) != NULL) {
	281	lttv_traceset_destroy_position(currentPos);
	282	currentPos = lttv_traceset_create_current_position(ts);
	283	count++;
	284	} else {
	285	break;
	286	}
	287
	288	} else {
	289
	290	//No more event available
	291	break;
	292	}
9a366873 FD	293	}
9a366873 FD	294	}while(ret != 0);
88bf15f0	295
9a366873 FD	296	/substract the desired number of event to the count/
9a366873 FD	297	extraEvent = count - n;
88bf15f0	298	if (extraEvent >= 0) {
9a366873 FD	299	//if the extraEvent is over 0 go back to previousPos and
9a366873 FD	300	//move forward the value of extraEvent times
58b4e4ae	301	lttv_state_traceset_seek_position(ts, previousPos);
9a366873 FD	302
	303	for(i = 0 ; i < extraEvent ; i++){
	304	if(bt_iter_next(bt_ctf_get_iter(ts->iter)) < 0){
	305	printf("ERROR NEXT\n");
	306	break;
	307	}
	308
	309	}
	310	break; /* we successfully seeked backward */
	311	}
88bf15f0 FD	312	else{
	313	/* if the extraEvent is below 0 create a position before and start over*/
	314	ratio = ratio * 16;
9a366873	315	}
88bf15f0	316	lttv_traceset_destroy_position(currentPos);
9a366873 FD	317	}
9a366873 FD	318	return 0;
7a4bdb54	319	}