[lttng-tools.git] / src / common / evaluation.c

/*
 * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 */

#include <lttng/condition/evaluation-internal.h>
#include <lttng/condition/buffer-usage-internal.h>
#include <lttng/condition/session-consumed-size-internal.h>
#include <lttng/condition/session-rotation-internal.h>
#include <lttng/condition/event-rule-internal.h>
#include <common/macros.h>
#include <common/error.h>
#include <stdbool.h>
#include <assert.h>

LTTNG_HIDDEN
void lttng_evaluation_init(struct lttng_evaluation *evaluation,
		enum lttng_condition_type type)
{
	evaluation->type = type;
}

LTTNG_HIDDEN
int lttng_evaluation_serialize(const struct lttng_evaluation *evaluation,
		struct lttng_dynamic_buffer *buf)
{
	int ret;
	struct lttng_evaluation_comm evaluation_comm = {
		.type = (int8_t) evaluation->type
	};

	ret = lttng_dynamic_buffer_append(buf, &evaluation_comm,
			sizeof(evaluation_comm));
	if (ret) {
		goto end;
	}

	if (evaluation->serialize) {
		ret = evaluation->serialize(evaluation, buf);
		if (ret) {
			goto end;
		}
	}
end:
	return ret;
}

LTTNG_HIDDEN
ssize_t lttng_evaluation_create_from_buffer(
		const struct lttng_buffer_view *src_view,
		struct lttng_evaluation **evaluation)
{
	ssize_t ret, evaluation_size = 0;
	const struct lttng_evaluation_comm *evaluation_comm;
	const struct lttng_buffer_view evaluation_view =
			lttng_buffer_view_from_view(src_view,
			sizeof(*evaluation_comm), -1);

	if (!src_view || !evaluation) {
		ret = -1;
		goto end;
	}

	evaluation_comm = (const struct lttng_evaluation_comm *) src_view->data;
	evaluation_size += sizeof(*evaluation_comm);

	switch ((enum lttng_condition_type) evaluation_comm->type) {
	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
		ret = lttng_evaluation_buffer_usage_low_create_from_buffer(
				&evaluation_view, evaluation);
		if (ret < 0) {
			goto end;
		}
		evaluation_size += ret;
		break;
	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
		ret = lttng_evaluation_buffer_usage_high_create_from_buffer(
				&evaluation_view, evaluation);
		if (ret < 0) {
			goto end;
		}
		evaluation_size += ret;
		break;
	case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
		ret = lttng_evaluation_session_consumed_size_create_from_buffer(
				&evaluation_view, evaluation);
		if (ret < 0) {
			goto end;
		}
		evaluation_size += ret;
		break;
	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
		ret = lttng_evaluation_session_rotation_ongoing_create_from_buffer(
				&evaluation_view, evaluation);
		if (ret < 0) {
			goto end;
		}
		evaluation_size += ret;
		break;
	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
		ret = lttng_evaluation_session_rotation_completed_create_from_buffer(
				&evaluation_view, evaluation);
		if (ret < 0) {
			goto end;
		}
		evaluation_size += ret;
		break;
	case LTTNG_CONDITION_TYPE_EVENT_RULE_HIT:
		ret = lttng_evaluation_event_rule_create_from_buffer(&evaluation_view, evaluation);
		if (ret < 0) {
			goto end;
		}
		evaluation_size += ret;
		break;
	default:
		ERR("Attempted to create evaluation of unknown type (%i)",
				(int) evaluation_comm->type);
		ret = -1;
		goto end;
	}
	ret = evaluation_size;
end:
	return ret;
}

enum lttng_condition_type lttng_evaluation_get_type(
		const struct lttng_evaluation *evaluation)
{
	return evaluation ? evaluation->type : LTTNG_CONDITION_TYPE_UNKNOWN;
}

void lttng_evaluation_destroy(struct lttng_evaluation *evaluation)
{
	if (!evaluation) {
		return;
	}

	assert(evaluation->destroy);
	evaluation->destroy(evaluation);
}
Commit	Line	Data
a58c490f	1	/*
ab5be9fa	2	* Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
a58c490f	3	*
ab5be9fa	4	* SPDX-License-Identifier: LGPL-2.1-only
a58c490f	5	*
a58c490f JG	6	*/
	7
	8	#include <lttng/condition/evaluation-internal.h>
	9	#include <lttng/condition/buffer-usage-internal.h>
e8360425	10	#include <lttng/condition/session-consumed-size-internal.h>
c19092cd	11	#include <lttng/condition/session-rotation-internal.h>
1831ae68	12	#include <lttng/condition/event-rule-internal.h>
a58c490f JG	13	#include <common/macros.h>
	14	#include <common/error.h>
	15	#include <stdbool.h>
	16	#include <assert.h>
	17
c19092cd JG	18	LTTNG_HIDDEN
	19	void lttng_evaluation_init(struct lttng_evaluation *evaluation,
	20	enum lttng_condition_type type)
	21	{
	22	evaluation->type = type;
	23	}
	24
a58c490f	25	LTTNG_HIDDEN
9b63a4aa	26	int lttng_evaluation_serialize(const struct lttng_evaluation *evaluation,
3647288f	27	struct lttng_dynamic_buffer *buf)
a58c490f	28	{
3647288f	29	int ret;
db315d75 JG	30	struct lttng_evaluation_comm evaluation_comm = {
	31	.type = (int8_t) evaluation->type
	32	};
a58c490f	33
3647288f JG	34	ret = lttng_dynamic_buffer_append(buf, &evaluation_comm,
	35	sizeof(evaluation_comm));
	36	if (ret) {
	37	goto end;
a58c490f	38	}
a58c490f JG	39
a58c490f JG	40	if (evaluation->serialize) {
3647288f JG	41	ret = evaluation->serialize(evaluation, buf);
3647288f JG	42	if (ret) {
a58c490f JG	43	goto end;
a58c490f JG	44	}
a58c490f	45	}
a58c490f JG	46	end:
	47	return ret;
	48	}
	49
	50	LTTNG_HIDDEN
	51	ssize_t lttng_evaluation_create_from_buffer(
	52	const struct lttng_buffer_view *src_view,
	53	struct lttng_evaluation **evaluation)
	54	{
	55	ssize_t ret, evaluation_size = 0;
	56	const struct lttng_evaluation_comm *evaluation_comm;
	57	const struct lttng_buffer_view evaluation_view =
	58	lttng_buffer_view_from_view(src_view,
	59	sizeof(*evaluation_comm), -1);
	60
	61	if (!src_view \|\| !evaluation) {
	62	ret = -1;
	63	goto end;
	64	}
	65
	66	evaluation_comm = (const struct lttng_evaluation_comm *) src_view->data;
	67	evaluation_size += sizeof(*evaluation_comm);
	68
	69	switch ((enum lttng_condition_type) evaluation_comm->type) {
	70	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
	71	ret = lttng_evaluation_buffer_usage_low_create_from_buffer(
	72	&evaluation_view, evaluation);
	73	if (ret < 0) {
	74	goto end;
	75	}
	76	evaluation_size += ret;
	77	break;
	78	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
	79	ret = lttng_evaluation_buffer_usage_high_create_from_buffer(
	80	&evaluation_view, evaluation);
	81	if (ret < 0) {
	82	goto end;
	83	}
	84	evaluation_size += ret;
	85	break;
e8360425 JD	86	case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
	87	ret = lttng_evaluation_session_consumed_size_create_from_buffer(
	88	&evaluation_view, evaluation);
	89	if (ret < 0) {
	90	goto end;
	91	}
	92	evaluation_size += ret;
	93	break;
c19092cd JG	94	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
	95	ret = lttng_evaluation_session_rotation_ongoing_create_from_buffer(
	96	&evaluation_view, evaluation);
	97	if (ret < 0) {
	98	goto end;
	99	}
	100	evaluation_size += ret;
	101	break;
	102	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
	103	ret = lttng_evaluation_session_rotation_completed_create_from_buffer(
	104	&evaluation_view, evaluation);
	105	if (ret < 0) {
	106	goto end;
	107	}
	108	evaluation_size += ret;
	109	break;
1831ae68 FD	110	case LTTNG_CONDITION_TYPE_EVENT_RULE_HIT:
	111	ret = lttng_evaluation_event_rule_create_from_buffer(&evaluation_view, evaluation);
	112	if (ret < 0) {
	113	goto end;
	114	}
	115	evaluation_size += ret;
	116	break;
a58c490f JG	117	default:
	118	ERR("Attempted to create evaluation of unknown type (%i)",
	119	(int) evaluation_comm->type);
	120	ret = -1;
	121	goto end;
	122	}
	123	ret = evaluation_size;
	124	end:
	125	return ret;
	126	}
	127
	128	enum lttng_condition_type lttng_evaluation_get_type(
	129	const struct lttng_evaluation *evaluation)
	130	{
	131	return evaluation ? evaluation->type : LTTNG_CONDITION_TYPE_UNKNOWN;
	132	}
	133
	134	void lttng_evaluation_destroy(struct lttng_evaluation *evaluation)
	135	{
	136	if (!evaluation) {
	137	return;
	138	}
	139
	140	assert(evaluation->destroy);
	141	evaluation->destroy(evaluation);
	142	}