[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/on-event-internal.h>
#include <lttng/condition/on-event.h>
#include <lttng/event-rule/event-rule-internal.h>
#include <lttng/condition/on-event-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>
e393070a JR	16	#include <lttng/condition/on-event-internal.h>
e393070a JR	17	#include <lttng/condition/on-event.h>
e98a976a	18	#include <lttng/event-rule/event-rule-internal.h>
e393070a	19	#include <lttng/condition/on-event-internal.h>
e98a976a FD	20	#include "condition-internal.h"
	21
	22	static
	23	unsigned long lttng_condition_buffer_usage_hash(
	24	const struct lttng_condition *_condition)
	25	{
	26	unsigned long hash;
	27	unsigned long condition_type;
	28	struct lttng_condition_buffer_usage *condition;
	29
	30	condition = container_of(_condition,
	31	struct lttng_condition_buffer_usage, parent);
	32
	33	condition_type = (unsigned long) condition->parent.type;
	34	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
	35	if (condition->session_name) {
	36	hash ^= hash_key_str(condition->session_name, lttng_ht_seed);
	37	}
	38	if (condition->channel_name) {
	39	hash ^= hash_key_str(condition->channel_name, lttng_ht_seed);
	40	}
	41	if (condition->domain.set) {
	42	hash ^= hash_key_ulong(
	43	(void *) condition->domain.type,
	44	lttng_ht_seed);
	45	}
	46	if (condition->threshold_ratio.set) {
	47	uint64_t val;
	48
	49	val = condition->threshold_ratio.value * (double) UINT32_MAX;
	50	hash ^= hash_key_u64(&val, lttng_ht_seed);
	51	} else if (condition->threshold_bytes.set) {
	52	uint64_t val;
	53
	54	val = condition->threshold_bytes.value;
	55	hash ^= hash_key_u64(&val, lttng_ht_seed);
	56	}
	57	return hash;
	58	}
	59
	60	static
	61	unsigned long lttng_condition_session_consumed_size_hash(
	62	const struct lttng_condition *_condition)
	63	{
	64	unsigned long hash;
	65	unsigned long condition_type =
	66	(unsigned long) LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE;
	67	struct lttng_condition_session_consumed_size *condition;
	68	uint64_t val;
	69
	70	condition = container_of(_condition,
	71	struct lttng_condition_session_consumed_size, parent);
	72
	73	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
	74	if (condition->session_name) {
	75	hash ^= hash_key_str(condition->session_name, lttng_ht_seed);
	76	}
	77	val = condition->consumed_threshold_bytes.value;
	78	hash ^= hash_key_u64(&val, lttng_ht_seed);
	79	return hash;
	80	}
	81
	82	static
	83	unsigned long lttng_condition_session_rotation_hash(
84	const struct lttng_condition *_condition)
85	{
86	unsigned long hash, condition_type;
87	struct lttng_condition_session_rotation *condition;
88
89	condition = container_of(_condition,
90	struct lttng_condition_session_rotation, parent);
91	condition_type = (unsigned long) condition->parent.type;
92	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
93	assert(condition->session_name);
94	hash ^= hash_key_str(condition->session_name, lttng_ht_seed);
95	return hash;
96	}
97
98	static
d602bd6a	99	unsigned long lttng_condition_on_event_hash(
e98a976a FD	100	const struct lttng_condition *condition)
	101	{
	102	unsigned long hash, condition_type;
	103	enum lttng_condition_status condition_status;
	104	const struct lttng_event_rule *event_rule;
	105
	106	condition_type = (unsigned long) condition->type;
d602bd6a	107	condition_status = lttng_condition_on_event_get_rule(condition,
e98a976a FD	108	&event_rule);
	109	assert(condition_status == LTTNG_CONDITION_STATUS_OK);
	110
	111	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
	112	return hash ^ lttng_event_rule_hash(event_rule);
	113	}
	114
	115	/*
	116	* The lttng_condition hashing code is kept in this file (rather than
	117	* condition.c) since it makes use of GPLv2 code (hashtable utils), which we
	118	* don't want to link in liblttng-ctl.
	119	*/
	120	unsigned long lttng_condition_hash(const struct lttng_condition *condition)
	121	{
	122	switch (condition->type) {
	123	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
	124	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
	125	return lttng_condition_buffer_usage_hash(condition);
	126	case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
	127	return lttng_condition_session_consumed_size_hash(condition);
	128	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
	129	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
	130	return lttng_condition_session_rotation_hash(condition);
d602bd6a JR	131	case LTTNG_CONDITION_TYPE_ON_EVENT:
d602bd6a JR	132	return lttng_condition_on_event_hash(condition);
e98a976a FD	133	default:
	134	//ERR("[notification-thread] Unexpected condition type caught");
	135	abort();
	136	}
	137	}