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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 | ||
28ab034a JG |
8 | #include "condition-internal.hpp" |
9 | ||
c9e313bc | 10 | #include <common/hashtable/hashtable.hpp> |
28ab034a | 11 | #include <common/hashtable/utils.hpp> |
e98a976a | 12 | |
c9e313bc | 13 | #include <lttng/condition/buffer-usage-internal.hpp> |
28ab034a JG |
14 | #include <lttng/condition/condition-internal.hpp> |
15 | #include <lttng/condition/condition.h> | |
c9e313bc | 16 | #include <lttng/condition/event-rule-matches-internal.hpp> |
670a26e4 | 17 | #include <lttng/condition/event-rule-matches.h> |
28ab034a JG |
18 | #include <lttng/condition/session-consumed-size-internal.hpp> |
19 | #include <lttng/condition/session-rotation-internal.hpp> | |
c9e313bc | 20 | #include <lttng/event-rule/event-rule-internal.hpp> |
e98a976a | 21 | |
28ab034a | 22 | static unsigned long lttng_condition_buffer_usage_hash(const struct lttng_condition *_condition) |
e98a976a FD |
23 | { |
24 | unsigned long hash; | |
25 | unsigned long condition_type; | |
26 | struct lttng_condition_buffer_usage *condition; | |
27 | ||
28ab034a | 28 | condition = lttng::utils::container_of(_condition, <tng_condition_buffer_usage::parent); |
e98a976a FD |
29 | |
30 | condition_type = (unsigned long) condition->parent.type; | |
31 | hash = hash_key_ulong((void *) condition_type, lttng_ht_seed); | |
32 | if (condition->session_name) { | |
33 | hash ^= hash_key_str(condition->session_name, lttng_ht_seed); | |
34 | } | |
35 | if (condition->channel_name) { | |
36 | hash ^= hash_key_str(condition->channel_name, lttng_ht_seed); | |
37 | } | |
38 | if (condition->domain.set) { | |
28ab034a | 39 | hash ^= hash_key_ulong((void *) condition->domain.type, lttng_ht_seed); |
e98a976a FD |
40 | } |
41 | if (condition->threshold_ratio.set) { | |
f66473ac | 42 | hash ^= hash_key_u64(&condition->threshold_ratio.value, lttng_ht_seed); |
e98a976a FD |
43 | } else if (condition->threshold_bytes.set) { |
44 | uint64_t val; | |
45 | ||
46 | val = condition->threshold_bytes.value; | |
47 | hash ^= hash_key_u64(&val, lttng_ht_seed); | |
48 | } | |
49 | return hash; | |
50 | } | |
51 | ||
28ab034a JG |
52 | static unsigned long |
53 | lttng_condition_session_consumed_size_hash(const struct lttng_condition *_condition) | |
e98a976a FD |
54 | { |
55 | unsigned long hash; | |
07c4863f JG |
56 | const unsigned long condition_type = |
57 | (unsigned long) LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE; | |
e98a976a FD |
58 | struct lttng_condition_session_consumed_size *condition; |
59 | uint64_t val; | |
60 | ||
0114db0e | 61 | condition = lttng::utils::container_of(_condition, |
28ab034a | 62 | <tng_condition_session_consumed_size::parent); |
e98a976a FD |
63 | |
64 | hash = hash_key_ulong((void *) condition_type, lttng_ht_seed); | |
65 | if (condition->session_name) { | |
66 | hash ^= hash_key_str(condition->session_name, lttng_ht_seed); | |
67 | } | |
68 | val = condition->consumed_threshold_bytes.value; | |
69 | hash ^= hash_key_u64(&val, lttng_ht_seed); | |
70 | return hash; | |
71 | } | |
72 | ||
28ab034a | 73 | static unsigned long lttng_condition_session_rotation_hash(const struct lttng_condition *_condition) |
e98a976a FD |
74 | { |
75 | unsigned long hash, condition_type; | |
76 | struct lttng_condition_session_rotation *condition; | |
77 | ||
28ab034a JG |
78 | condition = |
79 | lttng::utils::container_of(_condition, <tng_condition_session_rotation::parent); | |
e98a976a FD |
80 | condition_type = (unsigned long) condition->parent.type; |
81 | hash = hash_key_ulong((void *) condition_type, lttng_ht_seed); | |
a0377dfe | 82 | LTTNG_ASSERT(condition->session_name); |
e98a976a FD |
83 | hash ^= hash_key_str(condition->session_name, lttng_ht_seed); |
84 | return hash; | |
85 | } | |
86 | ||
28ab034a JG |
87 | static unsigned long |
88 | lttng_condition_event_rule_matches_hash(const struct lttng_condition *condition) | |
e98a976a FD |
89 | { |
90 | unsigned long hash, condition_type; | |
91 | enum lttng_condition_status condition_status; | |
92 | const struct lttng_event_rule *event_rule; | |
93 | ||
94 | condition_type = (unsigned long) condition->type; | |
28ab034a | 95 | condition_status = lttng_condition_event_rule_matches_get_rule(condition, &event_rule); |
a0377dfe | 96 | LTTNG_ASSERT(condition_status == LTTNG_CONDITION_STATUS_OK); |
e98a976a FD |
97 | |
98 | hash = hash_key_ulong((void *) condition_type, lttng_ht_seed); | |
99 | return hash ^ lttng_event_rule_hash(event_rule); | |
100 | } | |
101 | ||
102 | /* | |
103 | * The lttng_condition hashing code is kept in this file (rather than | |
104 | * condition.c) since it makes use of GPLv2 code (hashtable utils), which we | |
105 | * don't want to link in liblttng-ctl. | |
106 | */ | |
107 | unsigned long lttng_condition_hash(const struct lttng_condition *condition) | |
108 | { | |
109 | switch (condition->type) { | |
110 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW: | |
111 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH: | |
112 | return lttng_condition_buffer_usage_hash(condition); | |
113 | case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE: | |
114 | return lttng_condition_session_consumed_size_hash(condition); | |
115 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING: | |
116 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED: | |
117 | return lttng_condition_session_rotation_hash(condition); | |
8dbb86b8 JR |
118 | case LTTNG_CONDITION_TYPE_EVENT_RULE_MATCHES: |
119 | return lttng_condition_event_rule_matches_hash(condition); | |
e98a976a | 120 | default: |
e98a976a FD |
121 | abort(); |
122 | } | |
123 | } | |
091fa780 | 124 | |
091fa780 FD |
125 | struct lttng_condition *lttng_condition_copy(const struct lttng_condition *condition) |
126 | { | |
127 | int ret; | |
128 | struct lttng_payload copy_buffer; | |
cd9adb8b | 129 | struct lttng_condition *copy = nullptr; |
091fa780 FD |
130 | |
131 | lttng_payload_init(©_buffer); | |
132 | ||
133 | ret = lttng_condition_serialize(condition, ©_buffer); | |
134 | if (ret < 0) { | |
135 | goto end; | |
136 | } | |
137 | ||
138 | { | |
139 | struct lttng_payload_view view = | |
28ab034a | 140 | lttng_payload_view_from_payload(©_buffer, 0, -1); |
091fa780 | 141 | |
28ab034a | 142 | ret = lttng_condition_create_from_payload(&view, ©); |
091fa780 | 143 | if (ret < 0) { |
cd9adb8b | 144 | copy = nullptr; |
091fa780 FD |
145 | goto end; |
146 | } | |
147 | } | |
148 | ||
149 | end: | |
150 | lttng_payload_reset(©_buffer); | |
151 | return copy; | |
152 | } |