[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_payload *payload)
{
	int ret;
	struct lttng_evaluation_comm evaluation_comm = {
		.type = (int8_t) evaluation->type
	};

	ret = lttng_dynamic_buffer_append(&payload->buffer, &evaluation_comm,
			sizeof(evaluation_comm));
	if (ret) {
		goto end;
	}

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

LTTNG_HIDDEN
ssize_t lttng_evaluation_create_from_payload(
		struct lttng_payload_view *src_view,
		struct lttng_evaluation **evaluation)
{
	ssize_t ret, evaluation_size = 0;
	const struct lttng_evaluation_comm *evaluation_comm;
	struct lttng_payload_view evaluation_comm_view =
			lttng_payload_view_from_view(
					src_view, 0, sizeof(*evaluation_comm));
	struct lttng_payload_view evaluation_view =
			lttng_payload_view_from_view(src_view,
					sizeof(*evaluation_comm), -1);

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

	if (!lttng_payload_view_is_valid(&evaluation_comm_view)) {
		ret = -1;
		goto end;
	}

	evaluation_comm = (typeof(evaluation_comm)) evaluation_comm_view.buffer.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_payload(
				&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_payload(
				&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_payload(
				&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_payload(
				&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_payload(
				&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_payload(&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
	1	/*
	2	* Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
	3	*
	4	* SPDX-License-Identifier: LGPL-2.1-only
	5	*
	6	*/
	7
	8	#include <lttng/condition/evaluation-internal.h>
	9	#include <lttng/condition/buffer-usage-internal.h>
	10	#include <lttng/condition/session-consumed-size-internal.h>
	11	#include <lttng/condition/session-rotation-internal.h>
	12	#include <lttng/condition/event-rule-internal.h>
	13	#include <common/macros.h>
	14	#include <common/error.h>
	15	#include <stdbool.h>
	16	#include <assert.h>
	17
	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
	25	LTTNG_HIDDEN
	26	int lttng_evaluation_serialize(const struct lttng_evaluation *evaluation,
	27	struct lttng_payload *payload)
	28	{
	29	int ret;
	30	struct lttng_evaluation_comm evaluation_comm = {
	31	.type = (int8_t) evaluation->type
	32	};
	33
	34	ret = lttng_dynamic_buffer_append(&payload->buffer, &evaluation_comm,
	35	sizeof(evaluation_comm));
	36	if (ret) {
	37	goto end;
	38	}
	39
	40	if (evaluation->serialize) {
	41	ret = evaluation->serialize(evaluation, payload);
	42	if (ret) {
	43	goto end;
	44	}
	45	}
	46	end:
	47	return ret;
	48	}
	49
	50	LTTNG_HIDDEN
	51	ssize_t lttng_evaluation_create_from_payload(
	52	struct lttng_payload_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	struct lttng_payload_view evaluation_comm_view =
	58	lttng_payload_view_from_view(
	59	src_view, 0, sizeof(*evaluation_comm));
	60	struct lttng_payload_view evaluation_view =
	61	lttng_payload_view_from_view(src_view,
	62	sizeof(*evaluation_comm), -1);
	63
	64	if (!src_view \|\| !evaluation) {
	65	ret = -1;
	66	goto end;
	67	}
	68
	69	if (!lttng_payload_view_is_valid(&evaluation_comm_view)) {
	70	ret = -1;
	71	goto end;
	72	}
	73
	74	evaluation_comm = (typeof(evaluation_comm)) evaluation_comm_view.buffer.data;
	75	evaluation_size += sizeof(*evaluation_comm);
	76
	77	switch ((enum lttng_condition_type) evaluation_comm->type) {
	78	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
	79	ret = lttng_evaluation_buffer_usage_low_create_from_payload(
	80	&evaluation_view, evaluation);
	81	if (ret < 0) {
	82	goto end;
	83	}
	84	evaluation_size += ret;
	85	break;
	86	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
	87	ret = lttng_evaluation_buffer_usage_high_create_from_payload(
	88	&evaluation_view, evaluation);
	89	if (ret < 0) {
	90	goto end;
	91	}
	92	evaluation_size += ret;
	93	break;
	94	case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
	95	ret = lttng_evaluation_session_consumed_size_create_from_payload(
	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_ONGOING:
	103	ret = lttng_evaluation_session_rotation_ongoing_create_from_payload(
	104	&evaluation_view, evaluation);
	105	if (ret < 0) {
	106	goto end;
	107	}
	108	evaluation_size += ret;
	109	break;
	110	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
	111	ret = lttng_evaluation_session_rotation_completed_create_from_payload(
	112	&evaluation_view, evaluation);
	113	if (ret < 0) {
	114	goto end;
	115	}
	116	evaluation_size += ret;
	117	break;
	118	case LTTNG_CONDITION_TYPE_EVENT_RULE_HIT:
	119	ret = lttng_evaluation_event_rule_create_from_payload(&evaluation_view, evaluation);
	120	if (ret < 0) {
	121	goto end;
	122	}
	123	evaluation_size += ret;
	124	break;
	125	default:
	126	ERR("Attempted to create evaluation of unknown type (%i)",
	127	(int) evaluation_comm->type);
	128	ret = -1;
	129	goto end;
	130	}
	131
	132	ret = evaluation_size;
	133	end:
	134	return ret;
	135	}
	136
	137	enum lttng_condition_type lttng_evaluation_get_type(
	138	const struct lttng_evaluation *evaluation)
	139	{
	140	return evaluation ? evaluation->type : LTTNG_CONDITION_TYPE_UNKNOWN;
	141	}
	142
	143	void lttng_evaluation_destroy(struct lttng_evaluation *evaluation)
	144	{
	145	if (!evaluation) {
	146	return;
	147	}
	148
	149	assert(evaluation->destroy);
	150	evaluation->destroy(evaluation);
	151	}