[lttng-tools.git] / src / bin / lttng-sessiond / condition-internal.c

/*
 * Copyright (C) 2020 Francis Deslauriers <francis.deslauriers@efficios.com>
 *
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 */

#include <common/hashtable/utils.h>
#include <common/hashtable/hashtable.h>

#include <lttng/condition/condition.h>
#include <lttng/condition/condition-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 <lttng/condition/event-rule.h>
#include <lttng/event-rule/event-rule-internal.h>
#include "condition-internal.h"

static
unsigned long lttng_condition_buffer_usage_hash(
	const struct lttng_condition *_condition)
{
	unsigned long hash;
	unsigned long condition_type;
	struct lttng_condition_buffer_usage *condition;

	condition = container_of(_condition,
			struct lttng_condition_buffer_usage, parent);

	condition_type = (unsigned long) condition->parent.type;
	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
	if (condition->session_name) {
		hash ^= hash_key_str(condition->session_name, lttng_ht_seed);
	}
	if (condition->channel_name) {
		hash ^= hash_key_str(condition->channel_name, lttng_ht_seed);
	}
	if (condition->domain.set) {
		hash ^= hash_key_ulong(
				(void *) condition->domain.type,
				lttng_ht_seed);
	}
	if (condition->threshold_ratio.set) {
		uint64_t val;

		val = condition->threshold_ratio.value * (double) UINT32_MAX;
		hash ^= hash_key_u64(&val, lttng_ht_seed);
	} else if (condition->threshold_bytes.set) {
		uint64_t val;

		val = condition->threshold_bytes.value;
		hash ^= hash_key_u64(&val, lttng_ht_seed);
	}
	return hash;
}

static
unsigned long lttng_condition_session_consumed_size_hash(
	const struct lttng_condition *_condition)
{
	unsigned long hash;
	unsigned long condition_type =
			(unsigned long) LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE;
	struct lttng_condition_session_consumed_size *condition;
	uint64_t val;

	condition = container_of(_condition,
			struct lttng_condition_session_consumed_size, parent);

	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
	if (condition->session_name) {
		hash ^= hash_key_str(condition->session_name, lttng_ht_seed);
	}
	val = condition->consumed_threshold_bytes.value;
	hash ^= hash_key_u64(&val, lttng_ht_seed);
	return hash;
}

static
unsigned long lttng_condition_session_rotation_hash(
	const struct lttng_condition *_condition)
{
	unsigned long hash, condition_type;
	struct lttng_condition_session_rotation *condition;

	condition = container_of(_condition,
			struct lttng_condition_session_rotation, parent);
	condition_type = (unsigned long) condition->parent.type;
	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
	assert(condition->session_name);
	hash ^= hash_key_str(condition->session_name, lttng_ht_seed);
	return hash;
}

static
unsigned long lttng_condition_on_event_hash(
	const struct lttng_condition *condition)
{
	unsigned long hash, condition_type;
	enum lttng_condition_status condition_status;
	const struct lttng_event_rule *event_rule;

	condition_type = (unsigned long) condition->type;
	condition_status = lttng_condition_on_event_get_rule(condition,
			&event_rule);
	assert(condition_status == LTTNG_CONDITION_STATUS_OK);

	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
	return hash ^ lttng_event_rule_hash(event_rule);
}

/*
 * The lttng_condition hashing code is kept in this file (rather than
 * condition.c) since it makes use of GPLv2 code (hashtable utils), which we
 * don't want to link in liblttng-ctl.
 */
unsigned long lttng_condition_hash(const struct lttng_condition *condition)
{
	switch (condition->type) {
	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
		return lttng_condition_buffer_usage_hash(condition);
	case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
		return lttng_condition_session_consumed_size_hash(condition);
	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
		return lttng_condition_session_rotation_hash(condition);
	case LTTNG_CONDITION_TYPE_ON_EVENT:
		return lttng_condition_on_event_hash(condition);
	default:
		//ERR("[notification-thread] Unexpected condition type caught");
		abort();
	}
}
Commit	Line	Data
e98a976a FD	1	/*
	2	* Copyright (C) 2020 Francis Deslauriers <francis.deslauriers@efficios.com>
	3	*
	4	* SPDX-License-Identifier: LGPL-2.1-only
	5	*
	6	*/
	7
	8	#include <common/hashtable/utils.h>
	9	#include <common/hashtable/hashtable.h>
	10
	11	#include <lttng/condition/condition.h>
	12	#include <lttng/condition/condition-internal.h>
	13	#include <lttng/condition/buffer-usage-internal.h>
	14	#include <lttng/condition/session-consumed-size-internal.h>
	15	#include <lttng/condition/session-rotation-internal.h>
	16	#include <lttng/condition/event-rule-internal.h>
	17	#include <lttng/condition/event-rule.h>
	18	#include <lttng/event-rule/event-rule-internal.h>
	19	#include "condition-internal.h"
	20
	21	static
	22	unsigned long lttng_condition_buffer_usage_hash(
	23	const struct lttng_condition *_condition)
	24	{
	25	unsigned long hash;
	26	unsigned long condition_type;
	27	struct lttng_condition_buffer_usage *condition;
	28
	29	condition = container_of(_condition,
	30	struct lttng_condition_buffer_usage, parent);
	31
	32	condition_type = (unsigned long) condition->parent.type;
	33	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
	34	if (condition->session_name) {
	35	hash ^= hash_key_str(condition->session_name, lttng_ht_seed);
	36	}
	37	if (condition->channel_name) {
	38	hash ^= hash_key_str(condition->channel_name, lttng_ht_seed);
	39	}
	40	if (condition->domain.set) {
	41	hash ^= hash_key_ulong(
	42	(void *) condition->domain.type,
	43	lttng_ht_seed);
	44	}
	45	if (condition->threshold_ratio.set) {
	46	uint64_t val;
	47
	48	val = condition->threshold_ratio.value * (double) UINT32_MAX;
	49	hash ^= hash_key_u64(&val, lttng_ht_seed);
	50	} else if (condition->threshold_bytes.set) {
	51	uint64_t val;
	52
	53	val = condition->threshold_bytes.value;
	54	hash ^= hash_key_u64(&val, lttng_ht_seed);
	55	}
	56	return hash;
	57	}
	58
	59	static
	60	unsigned long lttng_condition_session_consumed_size_hash(
	61	const struct lttng_condition *_condition)
	62	{
	63	unsigned long hash;
	64	unsigned long condition_type =
65	(unsigned long) LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE;
66	struct lttng_condition_session_consumed_size *condition;
67	uint64_t val;
68
69	condition = container_of(_condition,
70	struct lttng_condition_session_consumed_size, parent);
71
72	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
73	if (condition->session_name) {
74	hash ^= hash_key_str(condition->session_name, lttng_ht_seed);
75	}
76	val = condition->consumed_threshold_bytes.value;
77	hash ^= hash_key_u64(&val, lttng_ht_seed);
78	return hash;
79	}
80
81	static
82	unsigned long lttng_condition_session_rotation_hash(
83	const struct lttng_condition *_condition)
84	{
85	unsigned long hash, condition_type;
86	struct lttng_condition_session_rotation *condition;
87
88	condition = container_of(_condition,
89	struct lttng_condition_session_rotation, parent);
90	condition_type = (unsigned long) condition->parent.type;
91	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
92	assert(condition->session_name);
93	hash ^= hash_key_str(condition->session_name, lttng_ht_seed);
94	return hash;
95	}
96
97	static
d602bd6a	98	unsigned long lttng_condition_on_event_hash(
e98a976a FD	99	const struct lttng_condition *condition)
	100	{
	101	unsigned long hash, condition_type;
	102	enum lttng_condition_status condition_status;
	103	const struct lttng_event_rule *event_rule;
	104
	105	condition_type = (unsigned long) condition->type;
d602bd6a	106	condition_status = lttng_condition_on_event_get_rule(condition,
e98a976a FD	107	&event_rule);
	108	assert(condition_status == LTTNG_CONDITION_STATUS_OK);
	109
	110	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
	111	return hash ^ lttng_event_rule_hash(event_rule);
	112	}
	113
	114	/*
	115	* The lttng_condition hashing code is kept in this file (rather than
	116	* condition.c) since it makes use of GPLv2 code (hashtable utils), which we
	117	* don't want to link in liblttng-ctl.
	118	*/
	119	unsigned long lttng_condition_hash(const struct lttng_condition *condition)
	120	{
	121	switch (condition->type) {
	122	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
	123	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
	124	return lttng_condition_buffer_usage_hash(condition);
	125	case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
	126	return lttng_condition_session_consumed_size_hash(condition);
	127	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
	128	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
	129	return lttng_condition_session_rotation_hash(condition);
d602bd6a JR	130	case LTTNG_CONDITION_TYPE_ON_EVENT:
d602bd6a JR	131	return lttng_condition_on_event_hash(condition);
e98a976a FD	132	default:
	133	//ERR("[notification-thread] Unexpected condition type caught");
	134	abort();
	135	}
	136	}