[lttng-tools.git] / include / lttng / condition / on-event-internal.h

/*
 * Copyright (C) 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
 *
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 */

#ifndef LTTNG_CONDITION_ON_EVENT_INTERNAL_H
#define LTTNG_CONDITION_ON_EVENT_INTERNAL_H

#include <lttng/condition/condition-internal.h>
#include <common/buffer-view.h>
#include <common/macros.h>
#include <common/optional.h>
#include <lttng/condition/evaluation-internal.h>
#include <common/dynamic-array.h>
#include <lttng/event-field-value.h>

struct lttng_capture_descriptor {
	struct lttng_event_expr *event_expression;
	struct lttng_bytecode *bytecode;
};

struct lttng_condition_on_event {
	struct lttng_condition parent;
	struct lttng_event_rule *rule;

	/*
	 * Internal use only.
	 * Error accounting counter index.
	 */
	LTTNG_OPTIONAL(uint64_t) error_counter_index;

	/* Array of `struct lttng_capture_descriptor *`. */
	struct lttng_dynamic_pointer_array capture_descriptors;
};

struct lttng_evaluation_on_event {
	struct lttng_evaluation parent;

	/* MessagePack-encoded captured event field values. */
	struct lttng_dynamic_buffer capture_payload;

	/*
	 * The content of this array event field value is the decoded
	 * version of `capture_payload` above.
	 *
	 * This is a cache: it's not serialized/deserialized in
	 * communications from/to the library and the session daemon.
	 */
	struct lttng_event_field_value *captured_values;
};

LTTNG_HIDDEN
ssize_t lttng_condition_on_event_create_from_payload(
		struct lttng_payload_view *view,
		struct lttng_condition **condition);

LTTNG_HIDDEN
enum lttng_condition_status
lttng_condition_on_event_borrow_rule_mutable(
		const struct lttng_condition *condition,
		struct lttng_event_rule **rule);

LTTNG_HIDDEN
void lttng_condition_on_event_set_error_counter_index(
		struct lttng_condition *condition, uint64_t error_counter_index);

LTTNG_HIDDEN
uint64_t lttng_condition_on_event_get_error_counter_index(
		const struct lttng_condition *condition);

LTTNG_HIDDEN
struct lttng_evaluation *lttng_evaluation_on_event_create(
		const struct lttng_condition_on_event *condition,
		const char *capture_payload, size_t capture_payload_size,
		bool decode_capture_payload);

LTTNG_HIDDEN
ssize_t lttng_evaluation_on_event_create_from_payload(
		const struct lttng_condition_on_event *condition,
		struct lttng_payload_view *view,
		struct lttng_evaluation **_evaluation);

LTTNG_HIDDEN
enum lttng_error_code
lttng_condition_on_event_generate_capture_descriptor_bytecode(
		struct lttng_condition *condition);

LTTNG_HIDDEN
const struct lttng_bytecode *
lttng_condition_on_event_get_capture_bytecode_at_index(
		const struct lttng_condition *condition, unsigned int index);

#endif /* LTTNG_CONDITION_ON_EVENT_INTERNAL_H */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
	3	*
	4	* SPDX-License-Identifier: LGPL-2.1-only
	5	*
	6	*/
	7
	8	#ifndef LTTNG_CONDITION_ON_EVENT_INTERNAL_H
	9	#define LTTNG_CONDITION_ON_EVENT_INTERNAL_H
	10
	11	#include <lttng/condition/condition-internal.h>
	12	#include <common/buffer-view.h>
	13	#include <common/macros.h>
	14	#include <common/optional.h>
	15	#include <lttng/condition/evaluation-internal.h>
	16	#include <common/dynamic-array.h>
	17	#include <lttng/event-field-value.h>
	18
	19	struct lttng_capture_descriptor {
	20	struct lttng_event_expr *event_expression;
	21	struct lttng_bytecode *bytecode;
	22	};
	23
	24	struct lttng_condition_on_event {
	25	struct lttng_condition parent;
	26	struct lttng_event_rule *rule;
	27
	28	/*
	29	* Internal use only.
	30	* Error accounting counter index.
	31	*/
	32	LTTNG_OPTIONAL(uint64_t) error_counter_index;
	33
	34	/* Array of `struct lttng_capture_descriptor `. /
	35	struct lttng_dynamic_pointer_array capture_descriptors;
	36	};
	37
	38	struct lttng_evaluation_on_event {
	39	struct lttng_evaluation parent;
	40
	41	/* MessagePack-encoded captured event field values. */
	42	struct lttng_dynamic_buffer capture_payload;
	43
	44	/*
	45	* The content of this array event field value is the decoded
	46	* version of `capture_payload` above.
	47	*
	48	* This is a cache: it's not serialized/deserialized in
	49	* communications from/to the library and the session daemon.
	50	*/
	51	struct lttng_event_field_value *captured_values;
	52	};
	53
	54	LTTNG_HIDDEN
	55	ssize_t lttng_condition_on_event_create_from_payload(
	56	struct lttng_payload_view *view,
	57	struct lttng_condition **condition);
	58
	59	LTTNG_HIDDEN
	60	enum lttng_condition_status
	61	lttng_condition_on_event_borrow_rule_mutable(
	62	const struct lttng_condition *condition,
	63	struct lttng_event_rule **rule);
	64
	65	LTTNG_HIDDEN
	66	void lttng_condition_on_event_set_error_counter_index(
	67	struct lttng_condition *condition, uint64_t error_counter_index);
	68
	69	LTTNG_HIDDEN
	70	uint64_t lttng_condition_on_event_get_error_counter_index(
	71	const struct lttng_condition *condition);
	72
	73	LTTNG_HIDDEN
	74	struct lttng_evaluation *lttng_evaluation_on_event_create(
	75	const struct lttng_condition_on_event *condition,
	76	const char *capture_payload, size_t capture_payload_size,
	77	bool decode_capture_payload);
	78
	79	LTTNG_HIDDEN
	80	ssize_t lttng_evaluation_on_event_create_from_payload(
	81	const struct lttng_condition_on_event *condition,
	82	struct lttng_payload_view *view,
	83	struct lttng_evaluation **_evaluation);
	84
	85	LTTNG_HIDDEN
	86	enum lttng_error_code
	87	lttng_condition_on_event_generate_capture_descriptor_bytecode(
	88	struct lttng_condition *condition);
	89
	90	LTTNG_HIDDEN
	91	const struct lttng_bytecode *
	92	lttng_condition_on_event_get_capture_bytecode_at_index(
	93	const struct lttng_condition *condition, unsigned int index);
	94
	95	#endif /* LTTNG_CONDITION_ON_EVENT_INTERNAL_H */