Commit | Line | Data |
---|---|---|
a58c490f | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
a58c490f | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
a58c490f | 5 | * |
a58c490f JG |
6 | */ |
7 | ||
8 | #include <lttng/condition/condition-internal.h> | |
9 | #include <lttng/condition/buffer-usage-internal.h> | |
5024c2ac | 10 | #include <lttng/condition/event-rule-internal.h> |
e8360425 | 11 | #include <lttng/condition/session-consumed-size-internal.h> |
c19092cd | 12 | #include <lttng/condition/session-rotation-internal.h> |
a58c490f JG |
13 | #include <common/macros.h> |
14 | #include <common/error.h> | |
15 | #include <common/dynamic-buffer.h> | |
16 | #include <common/buffer-view.h> | |
17 | #include <stdbool.h> | |
18 | #include <assert.h> | |
19 | ||
20 | enum lttng_condition_type lttng_condition_get_type( | |
21 | const struct lttng_condition *condition) | |
22 | { | |
23 | return condition ? condition->type : LTTNG_CONDITION_TYPE_UNKNOWN; | |
24 | } | |
25 | ||
26 | void lttng_condition_destroy(struct lttng_condition *condition) | |
27 | { | |
28 | if (!condition) { | |
29 | return; | |
30 | } | |
31 | ||
32 | assert(condition->destroy); | |
33 | condition->destroy(condition); | |
34 | } | |
35 | ||
36 | LTTNG_HIDDEN | |
37 | bool lttng_condition_validate(const struct lttng_condition *condition) | |
38 | { | |
39 | bool valid; | |
40 | ||
41 | if (!condition) { | |
42 | valid = false; | |
43 | goto end; | |
44 | } | |
45 | ||
46 | if (!condition->validate) { | |
47 | /* Sub-class guarantees that it can never be invalid. */ | |
48 | valid = true; | |
49 | goto end; | |
50 | } | |
51 | ||
52 | valid = condition->validate(condition); | |
53 | end: | |
54 | return valid; | |
55 | } | |
56 | ||
57 | LTTNG_HIDDEN | |
3647288f | 58 | int lttng_condition_serialize(const struct lttng_condition *condition, |
5024c2ac JR |
59 | struct lttng_dynamic_buffer *buf, |
60 | int *fd_to_send) | |
a58c490f | 61 | { |
3647288f JG |
62 | int ret; |
63 | struct lttng_condition_comm condition_comm = { 0 }; | |
a58c490f JG |
64 | |
65 | if (!condition) { | |
66 | ret = -1; | |
67 | goto end; | |
68 | } | |
69 | ||
3647288f JG |
70 | condition_comm.condition_type = (int8_t) condition->type; |
71 | ||
72 | ret = lttng_dynamic_buffer_append(buf, &condition_comm, | |
73 | sizeof(condition_comm)); | |
74 | if (ret) { | |
75 | goto end; | |
a58c490f JG |
76 | } |
77 | ||
5024c2ac | 78 | ret = condition->serialize(condition, buf, fd_to_send); |
3647288f | 79 | if (ret) { |
a58c490f JG |
80 | goto end; |
81 | } | |
a58c490f JG |
82 | end: |
83 | return ret; | |
84 | } | |
85 | ||
86 | LTTNG_HIDDEN | |
87 | bool lttng_condition_is_equal(const struct lttng_condition *a, | |
88 | const struct lttng_condition *b) | |
89 | { | |
90 | bool is_equal = false; | |
91 | ||
92 | if (!a || !b) { | |
93 | goto end; | |
94 | } | |
95 | ||
96 | if (a->type != b->type) { | |
97 | goto end; | |
98 | } | |
99 | ||
6c2fe319 JG |
100 | if (a == b) { |
101 | is_equal = true; | |
102 | goto end; | |
103 | } | |
104 | ||
a58c490f JG |
105 | is_equal = a->equal ? a->equal(a, b) : true; |
106 | end: | |
107 | return is_equal; | |
108 | } | |
109 | ||
110 | LTTNG_HIDDEN | |
111 | ssize_t lttng_condition_create_from_buffer( | |
112 | const struct lttng_buffer_view *buffer, | |
113 | struct lttng_condition **condition) | |
114 | { | |
115 | ssize_t ret, condition_size = 0; | |
116 | const struct lttng_condition_comm *condition_comm; | |
117 | condition_create_from_buffer_cb create_from_buffer = NULL; | |
118 | ||
119 | if (!buffer || !condition) { | |
120 | ret = -1; | |
121 | goto end; | |
122 | } | |
123 | ||
124 | DBG("Deserializing condition from buffer"); | |
125 | condition_comm = (const struct lttng_condition_comm *) buffer->data; | |
126 | condition_size += sizeof(*condition_comm); | |
127 | ||
128 | switch ((enum lttng_condition_type) condition_comm->condition_type) { | |
129 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW: | |
130 | create_from_buffer = lttng_condition_buffer_usage_low_create_from_buffer; | |
131 | break; | |
132 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH: | |
133 | create_from_buffer = lttng_condition_buffer_usage_high_create_from_buffer; | |
134 | break; | |
e8360425 JD |
135 | case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE: |
136 | create_from_buffer = lttng_condition_session_consumed_size_create_from_buffer; | |
137 | break; | |
c19092cd JG |
138 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING: |
139 | create_from_buffer = lttng_condition_session_rotation_ongoing_create_from_buffer; | |
140 | break; | |
141 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED: | |
142 | create_from_buffer = lttng_condition_session_rotation_completed_create_from_buffer; | |
143 | break; | |
5024c2ac JR |
144 | case LTTNG_CONDITION_TYPE_EVENT_RULE_HIT: |
145 | create_from_buffer = lttng_condition_event_rule_create_from_buffer; | |
146 | break; | |
a58c490f JG |
147 | default: |
148 | ERR("Attempted to create condition of unknown type (%i)", | |
149 | (int) condition_comm->condition_type); | |
150 | ret = -1; | |
151 | goto end; | |
152 | } | |
153 | ||
154 | if (create_from_buffer) { | |
155 | const struct lttng_buffer_view view = | |
156 | lttng_buffer_view_from_view(buffer, | |
157 | sizeof(*condition_comm), -1); | |
158 | ||
159 | ret = create_from_buffer(&view, condition); | |
160 | if (ret < 0) { | |
161 | goto end; | |
162 | } | |
163 | condition_size += ret; | |
164 | ||
165 | } else { | |
166 | abort(); | |
167 | } | |
168 | ||
169 | ret = condition_size; | |
170 | end: | |
171 | return ret; | |
172 | } | |
173 | ||
174 | LTTNG_HIDDEN | |
175 | void lttng_condition_init(struct lttng_condition *condition, | |
176 | enum lttng_condition_type type) | |
177 | { | |
178 | condition->type = type; | |
179 | } | |
5024c2ac JR |
180 | |
181 | LTTNG_HIDDEN | |
182 | const char *lttng_condition_type_str(enum lttng_condition_type type) | |
183 | { | |
184 | switch (type) { | |
185 | case LTTNG_CONDITION_TYPE_UNKNOWN: | |
186 | return "unknown"; | |
187 | ||
188 | case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE: | |
189 | return "session consumed size"; | |
190 | ||
191 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH: | |
192 | return "buffer usage high"; | |
193 | ||
194 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW: | |
195 | return "buffer usage low"; | |
196 | ||
197 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING: | |
198 | return "session rotation ongoing"; | |
199 | ||
200 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED: | |
201 | return "session rotation completed"; | |
202 | ||
203 | case LTTNG_CONDITION_TYPE_EVENT_RULE_HIT: | |
204 | return "event rule hit"; | |
205 | ||
206 | default: | |
207 | return "???"; | |
208 | } | |
209 | } |