[babeltrace.git] / plugins / trimmer / iterator.c

/*
 * iterator.c
 *
 * Babeltrace Trace Trimmer Iterator
 *
 * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include "trimmer.h"
#include "iterator.h"
#include <babeltrace/component/notification/iterator.h>
#include <babeltrace/component/notification/notification.h>
#include <babeltrace/component/notification/event.h>
#include <babeltrace/component/notification/stream.h>
#include <babeltrace/component/notification/packet.h>
#include <babeltrace/component/component-filter.h>
#include <babeltrace/ctf-ir/event.h>
#include <babeltrace/ctf-ir/stream.h>
#include <babeltrace/ctf-ir/stream-class.h>
#include <babeltrace/ctf-ir/clock-class.h>
#include <babeltrace/ctf-ir/packet.h>
#include <babeltrace/ctf-ir/trace.h>
#include <babeltrace/ctf-ir/fields.h>
#include <assert.h>
#include <plugins-common.h>

BT_HIDDEN
void trimmer_iterator_destroy(struct bt_notification_iterator *it)
{
	struct trimmer_iterator *it_data;

	it_data = bt_notification_iterator_get_private_data(it);
	assert(it_data);

	if (it_data->input_iterator_group) {
		g_ptr_array_free(it_data->input_iterator_group, TRUE);
	}
	bt_put(it_data->current_notification);
	g_free(it_data);
}

BT_HIDDEN
enum bt_notification_iterator_status trimmer_iterator_init(
		struct bt_component *component,
		struct bt_notification_iterator *iterator,
		UNUSED_VAR void *init_method_data)
{
	enum bt_notification_iterator_status ret =
		BT_NOTIFICATION_ITERATOR_STATUS_OK;
	enum bt_notification_iterator_status it_ret;
	struct trimmer_iterator *it_data = g_new0(struct trimmer_iterator, 1);

	if (!it_data) {
		ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM;
		goto end;
	}

	/* FIXME init trimmer_iterator */
	it_ret = bt_notification_iterator_set_private_data(iterator, it_data);
	if (it_ret) {
		goto end;
	}
end:
	return ret;
}

BT_HIDDEN
struct bt_notification *trimmer_iterator_get(
		struct bt_notification_iterator *iterator)
{
	struct trimmer_iterator *trim_it;

	trim_it = bt_notification_iterator_get_private_data(iterator);
	assert(trim_it);

	if (!trim_it->current_notification) {
		enum bt_notification_iterator_status it_ret;

		it_ret = trimmer_iterator_next(iterator);
		if (it_ret) {
			goto end;
		}
	}
end:
	return bt_get(trim_it->current_notification);
}

static
int update_lazy_bound(struct trimmer_bound *bound, const char *name,
		int64_t ts, bool *lazy_update)
{
	struct tm tm;
	int64_t value;
	time_t timeval;

	*lazy_update = false;

	if (!bound->lazy) {
		return 0;
	}
	tm.tm_isdst = -1;
	timeval = ts / NSEC_PER_SEC;

	if (bound->lazy_values.gmt) {
		/* Get day, month, year. */
		if (!gmtime_r(&timeval, &tm)) {
			printf_error("Failure in gmtime_r()");
			goto error;
		}
		tm.tm_sec = bound->lazy_values.ss;
		tm.tm_min = bound->lazy_values.mm;
		tm.tm_hour = bound->lazy_values.hh;
		timeval = timegm(&tm);
		if (timeval < 0) {
			printf_error("Failure in timegm(), incorrectly formatted %s timestamp",
					name);
			goto error;
		}
	} else {
		/* Get day, month, year. */
		if (!localtime_r(&timeval, &tm)) {
			printf_error("Failure in localtime_r()");
			goto error;
		}
		tm.tm_sec = bound->lazy_values.ss;
		tm.tm_min = bound->lazy_values.mm;
		tm.tm_hour = bound->lazy_values.hh;
		timeval = mktime(&tm);
		if (timeval < 0) {
			printf_error("Failure in mktime(), incorrectly formatted %s timestamp",
				name);
			goto error;
		}
	}
	value = (int64_t) timeval;
	value *= NSEC_PER_SEC;
	value += bound->lazy_values.ns;
	bound->value = value;
	bound->set = true;
	bound->lazy = false;
	*lazy_update = true;
	return 0;

error:
	return -1;
}

static
enum bt_notification_iterator_status
evaluate_event_notification(struct bt_notification *notification,
		struct trimmer_bound *begin, struct trimmer_bound *end,
		bool *_event_in_range)
{
	int64_t ts;
	int clock_ret;
	struct bt_ctf_event *event = NULL;
	bool in_range = true;
	struct bt_ctf_clock_class *clock_class = NULL;
	struct bt_ctf_trace *trace = NULL;
	struct bt_ctf_stream *stream = NULL;
	struct bt_ctf_stream_class *stream_class = NULL;
	struct bt_ctf_clock_value *clock_value = NULL;
	enum bt_notification_iterator_status ret =
			BT_NOTIFICATION_ITERATOR_STATUS_OK;
	bool lazy_update = false;

	event = bt_notification_event_get_event(notification);
	assert(event);

	stream = bt_ctf_event_get_stream(event);
	assert(stream);

	stream_class = bt_ctf_stream_get_class(stream);
	assert(stream_class);

	trace = bt_ctf_stream_class_get_trace(stream_class);
	assert(trace);

	/* FIXME multi-clock? */
	clock_class = bt_ctf_trace_get_clock_class(trace, 0);
	if (!clock_class) {
		goto end;
	}

	clock_value = bt_ctf_event_get_clock_value(event, clock_class);
	if (!clock_value) {
		printf_error("Failed to retrieve clock value");
		ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
		goto end;
	}

	clock_ret = bt_ctf_clock_value_get_value_ns_from_epoch(
			clock_value, &ts);
	if (clock_ret) {
		printf_error("Failed to retrieve clock value timestamp");
		ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
		goto end;
	}
	if (update_lazy_bound(begin, "begin", ts, &lazy_update)) {
		ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
		goto end;
	}
	if (update_lazy_bound(end, "end", ts, &lazy_update)) {
		ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
		goto end;
	}
	if (lazy_update && begin->set && end->set) {
		if (begin->value > end->value) {
			printf_error("Unexpected: time range begin value is above end value");
			ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
			goto end;
		}
	}
	if (begin->set && ts < begin->value) {
		in_range = false;
	}
	if (end->set && ts > end->value) {
		in_range = false;
	}
end:
	bt_put(event);
	bt_put(clock_class);
	bt_put(trace);
	bt_put(stream);
	bt_put(stream_class);
	bt_put(clock_value);
	*_event_in_range = in_range;
	return ret;
}

static
int ns_from_integer_field(struct bt_ctf_field *integer, int64_t *ns)
{
	int ret = 0;
	int is_signed;
	uint64_t raw_clock_value;
	struct bt_ctf_field_type *integer_type = NULL;
	struct bt_ctf_clock_class *clock_class = NULL;
	struct bt_ctf_clock_value *clock_value = NULL;

	integer_type = bt_ctf_field_get_type(integer);
	assert(integer_type);
	clock_class = bt_ctf_field_type_integer_get_mapped_clock_class(
		integer_type);
	if (!clock_class) {
		ret = -1;
		goto end;
	}

	is_signed = bt_ctf_field_type_integer_get_signed(integer_type);
	if (!is_signed) {
		ret = bt_ctf_field_unsigned_integer_get_value(integer,
				&raw_clock_value);
		if (ret) {
			goto end;
		}
	} else {
		/* Signed clock values are unsupported. */
		goto end;
	}

	clock_value = bt_ctf_clock_value_create(clock_class, raw_clock_value);
        if (!clock_value) {
		goto end;
	}

	ret = bt_ctf_clock_value_get_value_ns_from_epoch(clock_value, ns);
end:
	bt_put(integer_type);
	bt_put(clock_class);
	bt_put(clock_value);
	return ret;
}

static
enum bt_notification_iterator_status evaluate_packet_notification(
		struct bt_notification *notification,
		struct trimmer_bound *begin, struct trimmer_bound *end,
		bool *_packet_in_range)
{
        enum bt_notification_iterator_status ret =
			BT_NOTIFICATION_ITERATOR_STATUS_OK;
	int64_t begin_ns, pkt_begin_ns, end_ns, pkt_end_ns;
	bool in_range = true;
	struct bt_ctf_packet *packet = NULL;
	struct bt_ctf_field *packet_context = NULL,
			*timestamp_begin = NULL,
			*timestamp_end = NULL;

        switch (bt_notification_get_type(notification)) {
	case BT_NOTIFICATION_TYPE_PACKET_BEGIN:
		packet = bt_notification_packet_begin_get_packet(notification);
		break;
	case BT_NOTIFICATION_TYPE_PACKET_END:
		packet = bt_notification_packet_end_get_packet(notification);
		break;
	default:
		break;
	}
	assert(packet);

	packet_context = bt_ctf_packet_get_context(packet);
	if (!packet_context) {
		goto end;
	}

	if (!bt_ctf_field_is_structure(packet_context)) {
		goto end;
	}

	timestamp_begin = bt_ctf_field_structure_get_field(
			packet_context, "timestamp_begin");
	if (!timestamp_begin || !bt_ctf_field_is_integer(timestamp_begin)) {
		goto end;
	}
	timestamp_end = bt_ctf_field_structure_get_field(
			packet_context, "timestamp_end");
	if (!timestamp_end || !bt_ctf_field_is_integer(timestamp_end)) {
		goto end;
	}

	if (ns_from_integer_field(timestamp_begin, &pkt_begin_ns)) {
		goto end;
	}
	if (ns_from_integer_field(timestamp_end, &pkt_end_ns)) {
		goto end;
	}

	begin_ns = begin->set ? begin->value : INT64_MIN;
	end_ns = end->set ? end->value : INT64_MAX;

	/*
	 * Accept if there is any overlap between the selected region and the
	 * packet.
	 */
	in_range = (pkt_end_ns >= begin_ns) && (pkt_begin_ns <= end_ns);
end:
	*_packet_in_range = in_range;
	bt_put(packet);
	bt_put(packet_context);
	bt_put(timestamp_begin);
	bt_put(timestamp_end);
	return ret;
}

/* Return true if the notification should be forwarded. */
static
enum bt_notification_iterator_status evaluate_notification(
		struct bt_notification *notification,
		struct trimmer_bound *begin, struct trimmer_bound *end,
		bool *in_range)
{
	enum bt_notification_type type;
	enum bt_notification_iterator_status ret =
			BT_NOTIFICATION_ITERATOR_STATUS_OK;

	*in_range = true;
	type = bt_notification_get_type(notification);
	switch (type) {
	case BT_NOTIFICATION_TYPE_EVENT:
	        ret = evaluate_event_notification(notification, begin,
				end, in_range);
		break;
	case BT_NOTIFICATION_TYPE_PACKET_BEGIN:
	case BT_NOTIFICATION_TYPE_PACKET_END:
	        ret = evaluate_packet_notification(notification, begin,
				end, in_range);
		break;
	default:
		/* Accept all other notifications. */
		break;
	}
	return ret;
}

BT_HIDDEN
enum bt_notification_iterator_status trimmer_iterator_next(
		struct bt_notification_iterator *iterator)
{
	struct trimmer_iterator *trim_it = NULL;
	struct bt_component *component = NULL;
	struct trimmer *trimmer = NULL;
	struct bt_notification_iterator *source_it = NULL;
	enum bt_notification_iterator_status ret =
			BT_NOTIFICATION_ITERATOR_STATUS_OK;
	enum bt_component_status component_ret;
	bool notification_in_range = false;

	trim_it = bt_notification_iterator_get_private_data(iterator);
	assert(trim_it);

	component = bt_notification_iterator_get_component(iterator);
	assert(component);
	trimmer = bt_component_get_private_data(component);
	assert(trimmer);

	/* FIXME, should handle input iterator groups. */
	component_ret = bt_component_filter_get_input_iterator(component, 0,
			&source_it);
	assert((component_ret == BT_COMPONENT_STATUS_OK) && source_it);

	while (!notification_in_range) {
		struct bt_notification *notification;

		ret = bt_notification_iterator_next(source_it);
		if (ret != BT_NOTIFICATION_ITERATOR_STATUS_OK) {
			goto end;
		}

		notification = bt_notification_iterator_get_notification(
			        source_it);
		if (!notification) {
			ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
			goto end;
		}

	        ret = evaluate_notification(notification,
				&trimmer->begin, &trimmer->end,
				&notification_in_range);
		if (notification_in_range) {
			BT_MOVE(trim_it->current_notification, notification);
		} else {
			bt_put(notification);
		}

		if (ret != BT_NOTIFICATION_ITERATOR_STATUS_OK) {
			break;
		}
	}
end:
	bt_put(source_it);
	bt_put(component);
	return ret;
}

BT_HIDDEN
enum bt_notification_iterator_status trimmer_iterator_seek_time(
		struct bt_notification_iterator *iterator, int64_t time)
{
	enum bt_notification_iterator_status ret;

	ret = BT_NOTIFICATION_ITERATOR_STATUS_OK;
end:
	return ret;
}
Commit	Line	Data
cab3f160 JG	1	/*
	2	* iterator.c
	3	*
	4	* Babeltrace Trace Trimmer Iterator
	5	*
	6	* Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
	7	*
	8	* Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
	9	*
	10	* Permission is hereby granted, free of charge, to any person obtaining a copy
	11	* of this software and associated documentation files (the "Software"), to deal
	12	* in the Software without restriction, including without limitation the rights
	13	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	14	* copies of the Software, and to permit persons to whom the Software is
	15	* furnished to do so, subject to the following conditions:
	16	*
	17	* The above copyright notice and this permission notice shall be included in
	18	* all copies or substantial portions of the Software.
	19	*
	20	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	21	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	23	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	24	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	25	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	26	* SOFTWARE.
	27	*/
	28
	29	#include "trimmer.h"
	30	#include "iterator.h"
33b34c43 PP	31	#include <babeltrace/component/notification/iterator.h>
	32	#include <babeltrace/component/notification/notification.h>
	33	#include <babeltrace/component/notification/event.h>
	34	#include <babeltrace/component/notification/stream.h>
	35	#include <babeltrace/component/notification/packet.h>
d71dcf2c	36	#include <babeltrace/component/component-filter.h>
44d3cbf0 JG	37	#include <babeltrace/ctf-ir/event.h>
	38	#include <babeltrace/ctf-ir/stream.h>
	39	#include <babeltrace/ctf-ir/stream-class.h>
ac0c6bdd	40	#include <babeltrace/ctf-ir/clock-class.h>
44d3cbf0 JG	41	#include <babeltrace/ctf-ir/packet.h>
44d3cbf0 JG	42	#include <babeltrace/ctf-ir/trace.h>
72208f03	43	#include <babeltrace/ctf-ir/fields.h>
44d3cbf0	44	#include <assert.h>
8b0ce102	45	#include <plugins-common.h>
44d3cbf0	46
d3eb6e8f	47	BT_HIDDEN
44d3cbf0 JG	48	void trimmer_iterator_destroy(struct bt_notification_iterator *it)
	49	{
	50	struct trimmer_iterator *it_data;
	51
	52	it_data = bt_notification_iterator_get_private_data(it);
	53	assert(it_data);
	54
	55	if (it_data->input_iterator_group) {
	56	g_ptr_array_free(it_data->input_iterator_group, TRUE);
	57	}
	58	bt_put(it_data->current_notification);
44d3cbf0 JG	59	g_free(it_data);
44d3cbf0 JG	60	}
cab3f160 JG	61
cab3f160 JG	62	BT_HIDDEN
d3eb6e8f PP	63	enum bt_notification_iterator_status trimmer_iterator_init(
d3eb6e8f PP	64	struct bt_component *component,
8b0ce102 PP	65	struct bt_notification_iterator *iterator,
8b0ce102 PP	66	UNUSED_VAR void *init_method_data)
cab3f160	67	{
d3eb6e8f PP	68	enum bt_notification_iterator_status ret =
d3eb6e8f PP	69	BT_NOTIFICATION_ITERATOR_STATUS_OK;
cab3f160	70	enum bt_notification_iterator_status it_ret;
44d3cbf0 JG	71	struct trimmer_iterator *it_data = g_new0(struct trimmer_iterator, 1);
	72
	73	if (!it_data) {
d3eb6e8f	74	ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM;
44d3cbf0 JG	75	goto end;
	76	}
	77
	78	/* FIXME init trimmer_iterator */
	79	it_ret = bt_notification_iterator_set_private_data(iterator, it_data);
	80	if (it_ret) {
	81	goto end;
	82	}
cab3f160 JG	83	end:
	84	return ret;
	85	}
	86
	87	BT_HIDDEN
	88	struct bt_notification *trimmer_iterator_get(
	89	struct bt_notification_iterator *iterator)
	90	{
44d3cbf0 JG	91	struct trimmer_iterator *trim_it;
	92
	93	trim_it = bt_notification_iterator_get_private_data(iterator);
	94	assert(trim_it);
	95
	96	if (!trim_it->current_notification) {
	97	enum bt_notification_iterator_status it_ret;
	98
	99	it_ret = trimmer_iterator_next(iterator);
	100	if (it_ret) {
	101	goto end;
	102	}
	103	}
	104	end:
	105	return bt_get(trim_it->current_notification);
	106	}
	107
528debdf MD	108	static
528debdf MD	109	int update_lazy_bound(struct trimmer_bound bound, const char name,
55595636	110	int64_t ts, bool *lazy_update)
528debdf MD	111	{
	112	struct tm tm;
	113	int64_t value;
	114	time_t timeval;
	115
55595636 MD	116	*lazy_update = false;
55595636 MD	117
528debdf MD	118	if (!bound->lazy) {
	119	return 0;
	120	}
	121	tm.tm_isdst = -1;
	122	timeval = ts / NSEC_PER_SEC;
	123
	124	if (bound->lazy_values.gmt) {
	125	/* Get day, month, year. */
	126	if (!gmtime_r(&timeval, &tm)) {
55595636	127	printf_error("Failure in gmtime_r()");
528debdf MD	128	goto error;
	129	}
	130	tm.tm_sec = bound->lazy_values.ss;
	131	tm.tm_min = bound->lazy_values.mm;
	132	tm.tm_hour = bound->lazy_values.hh;
	133	timeval = timegm(&tm);
	134	if (timeval < 0) {
55595636 MD	135	printf_error("Failure in timegm(), incorrectly formatted %s timestamp",
55595636 MD	136	name);
528debdf MD	137	goto error;
	138	}
	139	} else {
	140	/* Get day, month, year. */
	141	if (!localtime_r(&timeval, &tm)) {
55595636	142	printf_error("Failure in localtime_r()");
528debdf MD	143	goto error;
	144	}
	145	tm.tm_sec = bound->lazy_values.ss;
	146	tm.tm_min = bound->lazy_values.mm;
	147	tm.tm_hour = bound->lazy_values.hh;
	148	timeval = mktime(&tm);
	149	if (timeval < 0) {
55595636	150	printf_error("Failure in mktime(), incorrectly formatted %s timestamp",
528debdf MD	151	name);
	152	goto error;
	153	}
	154	}
	155	value = (int64_t) timeval;
	156	value *= NSEC_PER_SEC;
	157	value += bound->lazy_values.ns;
	158	bound->value = value;
	159	bound->set = true;
	160	bound->lazy = false;
55595636	161	*lazy_update = true;
528debdf MD	162	return 0;
	163
	164	error:
528debdf MD	165	return -1;
	166	}
	167
44d3cbf0	168	static
55595636 MD	169	enum bt_notification_iterator_status
	170	evaluate_event_notification(struct bt_notification *notification,
	171	struct trimmer_bound begin, struct trimmer_bound end,
	172	bool *_event_in_range)
44d3cbf0	173	{
72208f03 JG	174	int64_t ts;
	175	int clock_ret;
	176	struct bt_ctf_event *event = NULL;
	177	bool in_range = true;
ac0c6bdd	178	struct bt_ctf_clock_class *clock_class = NULL;
72208f03	179	struct bt_ctf_trace *trace = NULL;
44d3cbf0	180	struct bt_ctf_stream *stream = NULL;
72208f03 JG	181	struct bt_ctf_stream_class *stream_class = NULL;
72208f03 JG	182	struct bt_ctf_clock_value *clock_value = NULL;
55595636 MD	183	enum bt_notification_iterator_status ret =
	184	BT_NOTIFICATION_ITERATOR_STATUS_OK;
	185	bool lazy_update = false;
44d3cbf0	186
72208f03 JG	187	event = bt_notification_event_get_event(notification);
72208f03 JG	188	assert(event);
44d3cbf0	189
72208f03 JG	190	stream = bt_ctf_event_get_stream(event);
72208f03 JG	191	assert(stream);
44d3cbf0	192
72208f03 JG	193	stream_class = bt_ctf_stream_get_class(stream);
	194	assert(stream_class);
	195
	196	trace = bt_ctf_stream_class_get_trace(stream_class);
	197	assert(trace);
	198
	199	/* FIXME multi-clock? */
ac0c6bdd PP	200	clock_class = bt_ctf_trace_get_clock_class(trace, 0);
ac0c6bdd PP	201	if (!clock_class) {
72208f03	202	goto end;
44d3cbf0	203	}
44d3cbf0	204
ac0c6bdd	205	clock_value = bt_ctf_event_get_clock_value(event, clock_class);
72208f03	206	if (!clock_value) {
55595636 MD	207	printf_error("Failed to retrieve clock value");
55595636 MD	208	ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
72208f03	209	goto end;
44d3cbf0	210	}
72208f03 JG	211
	212	clock_ret = bt_ctf_clock_value_get_value_ns_from_epoch(
	213	clock_value, &ts);
	214	if (clock_ret) {
55595636 MD	215	printf_error("Failed to retrieve clock value timestamp");
55595636 MD	216	ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
44d3cbf0 JG	217	goto end;
44d3cbf0 JG	218	}
55595636 MD	219	if (update_lazy_bound(begin, "begin", ts, &lazy_update)) {
55595636 MD	220	ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
528debdf MD	221	goto end;
528debdf MD	222	}
55595636 MD	223	if (update_lazy_bound(end, "end", ts, &lazy_update)) {
55595636 MD	224	ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
528debdf MD	225	goto end;
528debdf MD	226	}
55595636 MD	227	if (lazy_update && begin->set && end->set) {
	228	if (begin->value > end->value) {
	229	printf_error("Unexpected: time range begin value is above end value");
	230	ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
	231	goto end;
	232	}
	233	}
72208f03 JG	234	if (begin->set && ts < begin->value) {
	235	in_range = false;
	236	}
	237	if (end->set && ts > end->value) {
	238	in_range = false;
	239	}
44d3cbf0	240	end:
72208f03	241	bt_put(event);
ac0c6bdd	242	bt_put(clock_class);
72208f03 JG	243	bt_put(trace);
	244	bt_put(stream);
	245	bt_put(stream_class);
	246	bt_put(clock_value);
55595636 MD	247	*_event_in_range = in_range;
55595636 MD	248	return ret;
44d3cbf0 JG	249	}
44d3cbf0 JG	250
44d3cbf0	251	static
72208f03	252	int ns_from_integer_field(struct bt_ctf_field integer, int64_t ns)
44d3cbf0	253	{
72208f03 JG	254	int ret = 0;
	255	int is_signed;
	256	uint64_t raw_clock_value;
	257	struct bt_ctf_field_type *integer_type = NULL;
ac0c6bdd	258	struct bt_ctf_clock_class *clock_class = NULL;
44d3cbf0 JG	259	struct bt_ctf_clock_value *clock_value = NULL;
44d3cbf0 JG	260
72208f03 JG	261	integer_type = bt_ctf_field_get_type(integer);
72208f03 JG	262	assert(integer_type);
ac0c6bdd PP	263	clock_class = bt_ctf_field_type_integer_get_mapped_clock_class(
	264	integer_type);
	265	if (!clock_class) {
72208f03	266	ret = -1;
44d3cbf0 JG	267	goto end;
	268	}
	269
72208f03 JG	270	is_signed = bt_ctf_field_type_integer_get_signed(integer_type);
	271	if (!is_signed) {
	272	ret = bt_ctf_field_unsigned_integer_get_value(integer,
	273	&raw_clock_value);
	274	if (ret) {
44d3cbf0 JG	275	goto end;
44d3cbf0 JG	276	}
72208f03 JG	277	} else {
	278	/* Signed clock values are unsupported. */
	279	goto end;
	280	}
44d3cbf0	281
ac0c6bdd	282	clock_value = bt_ctf_clock_value_create(clock_class, raw_clock_value);
72208f03 JG	283	if (!clock_value) {
	284	goto end;
	285	}
44d3cbf0	286
72208f03 JG	287	ret = bt_ctf_clock_value_get_value_ns_from_epoch(clock_value, ns);
	288	end:
	289	bt_put(integer_type);
ac0c6bdd	290	bt_put(clock_class);
72208f03 JG	291	bt_put(clock_value);
	292	return ret;
	293	}
44d3cbf0	294
72208f03	295	static
55595636 MD	296	enum bt_notification_iterator_status evaluate_packet_notification(
	297	struct bt_notification *notification,
	298	struct trimmer_bound begin, struct trimmer_bound end,
	299	bool *_packet_in_range)
72208f03	300	{
55595636 MD	301	enum bt_notification_iterator_status ret =
55595636 MD	302	BT_NOTIFICATION_ITERATOR_STATUS_OK;
72208f03 JG	303	int64_t begin_ns, pkt_begin_ns, end_ns, pkt_end_ns;
	304	bool in_range = true;
	305	struct bt_ctf_packet *packet = NULL;
	306	struct bt_ctf_field *packet_context = NULL,
	307	*timestamp_begin = NULL,
	308	*timestamp_end = NULL;
	309
	310	switch (bt_notification_get_type(notification)) {
	311	case BT_NOTIFICATION_TYPE_PACKET_BEGIN:
	312	packet = bt_notification_packet_begin_get_packet(notification);
44d3cbf0	313	break;
72208f03 JG	314	case BT_NOTIFICATION_TYPE_PACKET_END:
	315	packet = bt_notification_packet_end_get_packet(notification);
	316	break;
	317	default:
55595636	318	break;
44d3cbf0	319	}
72208f03 JG	320	assert(packet);
	321
	322	packet_context = bt_ctf_packet_get_context(packet);
	323	if (!packet_context) {
	324	goto end;
	325	}
	326
	327	if (!bt_ctf_field_is_structure(packet_context)) {
	328	goto end;
	329	}
	330
	331	timestamp_begin = bt_ctf_field_structure_get_field(
	332	packet_context, "timestamp_begin");
	333	if (!timestamp_begin \|\| !bt_ctf_field_is_integer(timestamp_begin)) {
	334	goto end;
	335	}
	336	timestamp_end = bt_ctf_field_structure_get_field(
	337	packet_context, "timestamp_end");
	338	if (!timestamp_end \|\| !bt_ctf_field_is_integer(timestamp_end)) {
	339	goto end;
	340	}
	341
55595636	342	if (ns_from_integer_field(timestamp_begin, &pkt_begin_ns)) {
72208f03 JG	343	goto end;
72208f03 JG	344	}
55595636	345	if (ns_from_integer_field(timestamp_end, &pkt_end_ns)) {
72208f03 JG	346	goto end;
	347	}
	348
	349	begin_ns = begin->set ? begin->value : INT64_MIN;
	350	end_ns = end->set ? end->value : INT64_MAX;
	351
	352	/*
	353	* Accept if there is any overlap between the selected region and the
	354	* packet.
	355	*/
	356	in_range = (pkt_end_ns >= begin_ns) && (pkt_begin_ns <= end_ns);
	357	end:
55595636	358	*_packet_in_range = in_range;
72208f03 JG	359	bt_put(packet);
	360	bt_put(packet_context);
	361	bt_put(timestamp_begin);
	362	bt_put(timestamp_end);
55595636	363	return ret;
72208f03 JG	364	}
	365
	366	/* Return true if the notification should be forwarded. */
	367	static
55595636 MD	368	enum bt_notification_iterator_status evaluate_notification(
	369	struct bt_notification *notification,
	370	struct trimmer_bound begin, struct trimmer_bound end,
	371	bool *in_range)
72208f03	372	{
72208f03	373	enum bt_notification_type type;
55595636 MD	374	enum bt_notification_iterator_status ret =
55595636 MD	375	BT_NOTIFICATION_ITERATOR_STATUS_OK;
72208f03	376
b61397c4	377	*in_range = true;
72208f03 JG	378	type = bt_notification_get_type(notification);
	379	switch (type) {
	380	case BT_NOTIFICATION_TYPE_EVENT:
55595636 MD	381	ret = evaluate_event_notification(notification, begin,
55595636 MD	382	end, in_range);
72208f03 JG	383	break;
	384	case BT_NOTIFICATION_TYPE_PACKET_BEGIN:
	385	case BT_NOTIFICATION_TYPE_PACKET_END:
55595636 MD	386	ret = evaluate_packet_notification(notification, begin,
55595636 MD	387	end, in_range);
72208f03	388	break;
44d3cbf0	389	default:
72208f03	390	/* Accept all other notifications. */
44d3cbf0 JG	391	break;
44d3cbf0 JG	392	}
55595636	393	return ret;
cab3f160 JG	394	}
	395
	396	BT_HIDDEN
	397	enum bt_notification_iterator_status trimmer_iterator_next(
	398	struct bt_notification_iterator *iterator)
	399	{
44d3cbf0 JG	400	struct trimmer_iterator *trim_it = NULL;
	401	struct bt_component *component = NULL;
	402	struct trimmer *trimmer = NULL;
	403	struct bt_notification_iterator *source_it = NULL;
	404	enum bt_notification_iterator_status ret =
55595636	405	BT_NOTIFICATION_ITERATOR_STATUS_OK;
44d3cbf0	406	enum bt_component_status component_ret;
72208f03	407	bool notification_in_range = false;
cab3f160	408
44d3cbf0 JG	409	trim_it = bt_notification_iterator_get_private_data(iterator);
	410	assert(trim_it);
	411
	412	component = bt_notification_iterator_get_component(iterator);
	413	assert(component);
	414	trimmer = bt_component_get_private_data(component);
	415	assert(trimmer);
	416
	417	/* FIXME, should handle input iterator groups. */
	418	component_ret = bt_component_filter_get_input_iterator(component, 0,
	419	&source_it);
	420	assert((component_ret == BT_COMPONENT_STATUS_OK) && source_it);
	421
72208f03	422	while (!notification_in_range) {
44d3cbf0 JG	423	struct bt_notification *notification;
	424
	425	ret = bt_notification_iterator_next(source_it);
	426	if (ret != BT_NOTIFICATION_ITERATOR_STATUS_OK) {
	427	goto end;
	428	}
	429
	430	notification = bt_notification_iterator_get_notification(
	431	source_it);
	432	if (!notification) {
	433	ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
	434	goto end;
	435	}
	436
55595636 MD	437	ret = evaluate_notification(notification,
	438	&trimmer->begin, &trimmer->end,
	439	&notification_in_range);
72208f03	440	if (notification_in_range) {
44d3cbf0 JG	441	BT_MOVE(trim_it->current_notification, notification);
	442	} else {
	443	bt_put(notification);
	444	}
6d5f6792 JG	445
	446	if (ret != BT_NOTIFICATION_ITERATOR_STATUS_OK) {
	447	break;
	448	}
44d3cbf0	449	}
cab3f160	450	end:
44d3cbf0 JG	451	bt_put(source_it);
44d3cbf0 JG	452	bt_put(component);
cab3f160 JG	453	return ret;
	454	}
	455
	456	BT_HIDDEN
	457	enum bt_notification_iterator_status trimmer_iterator_seek_time(
	458	struct bt_notification_iterator *iterator, int64_t time)
	459	{
	460	enum bt_notification_iterator_status ret;
	461
	462	ret = BT_NOTIFICATION_ITERATOR_STATUS_OK;
	463	end:
	464	return ret;
	465	}