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a58c490f JG |
1 | /* |
2 | * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License | |
11 | * for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public License | |
14 | * along with this library; if not, write to the Free Software Foundation, | |
15 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
16 | */ | |
17 | ||
18 | #include <lttng/condition/evaluation-internal.h> | |
19 | #include <lttng/condition/buffer-usage-internal.h> | |
e8360425 | 20 | #include <lttng/condition/session-consumed-size-internal.h> |
c19092cd | 21 | #include <lttng/condition/session-rotation-internal.h> |
a58c490f JG |
22 | #include <common/macros.h> |
23 | #include <common/error.h> | |
24 | #include <stdbool.h> | |
25 | #include <assert.h> | |
26 | ||
c19092cd JG |
27 | LTTNG_HIDDEN |
28 | void lttng_evaluation_init(struct lttng_evaluation *evaluation, | |
29 | enum lttng_condition_type type) | |
30 | { | |
31 | evaluation->type = type; | |
32 | } | |
33 | ||
a58c490f | 34 | LTTNG_HIDDEN |
9b63a4aa | 35 | int lttng_evaluation_serialize(const struct lttng_evaluation *evaluation, |
3647288f | 36 | struct lttng_dynamic_buffer *buf) |
a58c490f | 37 | { |
3647288f | 38 | int ret; |
db315d75 JG |
39 | struct lttng_evaluation_comm evaluation_comm = { |
40 | .type = (int8_t) evaluation->type | |
41 | }; | |
a58c490f | 42 | |
3647288f JG |
43 | ret = lttng_dynamic_buffer_append(buf, &evaluation_comm, |
44 | sizeof(evaluation_comm)); | |
45 | if (ret) { | |
46 | goto end; | |
a58c490f | 47 | } |
a58c490f JG |
48 | |
49 | if (evaluation->serialize) { | |
3647288f JG |
50 | ret = evaluation->serialize(evaluation, buf); |
51 | if (ret) { | |
a58c490f JG |
52 | goto end; |
53 | } | |
a58c490f | 54 | } |
a58c490f JG |
55 | end: |
56 | return ret; | |
57 | } | |
58 | ||
59 | LTTNG_HIDDEN | |
60 | ssize_t lttng_evaluation_create_from_buffer( | |
61 | const struct lttng_buffer_view *src_view, | |
62 | struct lttng_evaluation **evaluation) | |
63 | { | |
64 | ssize_t ret, evaluation_size = 0; | |
65 | const struct lttng_evaluation_comm *evaluation_comm; | |
66 | const struct lttng_buffer_view evaluation_view = | |
67 | lttng_buffer_view_from_view(src_view, | |
68 | sizeof(*evaluation_comm), -1); | |
69 | ||
70 | if (!src_view || !evaluation) { | |
71 | ret = -1; | |
72 | goto end; | |
73 | } | |
74 | ||
75 | evaluation_comm = (const struct lttng_evaluation_comm *) src_view->data; | |
76 | evaluation_size += sizeof(*evaluation_comm); | |
77 | ||
78 | switch ((enum lttng_condition_type) evaluation_comm->type) { | |
79 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW: | |
80 | ret = lttng_evaluation_buffer_usage_low_create_from_buffer( | |
81 | &evaluation_view, evaluation); | |
82 | if (ret < 0) { | |
83 | goto end; | |
84 | } | |
85 | evaluation_size += ret; | |
86 | break; | |
87 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH: | |
88 | ret = lttng_evaluation_buffer_usage_high_create_from_buffer( | |
89 | &evaluation_view, evaluation); | |
90 | if (ret < 0) { | |
91 | goto end; | |
92 | } | |
93 | evaluation_size += ret; | |
94 | break; | |
e8360425 JD |
95 | case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE: |
96 | ret = lttng_evaluation_session_consumed_size_create_from_buffer( | |
97 | &evaluation_view, evaluation); | |
98 | if (ret < 0) { | |
99 | goto end; | |
100 | } | |
101 | evaluation_size += ret; | |
102 | break; | |
c19092cd JG |
103 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING: |
104 | ret = lttng_evaluation_session_rotation_ongoing_create_from_buffer( | |
105 | &evaluation_view, evaluation); | |
106 | if (ret < 0) { | |
107 | goto end; | |
108 | } | |
109 | evaluation_size += ret; | |
110 | break; | |
111 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED: | |
112 | ret = lttng_evaluation_session_rotation_completed_create_from_buffer( | |
113 | &evaluation_view, evaluation); | |
114 | if (ret < 0) { | |
115 | goto end; | |
116 | } | |
117 | evaluation_size += ret; | |
118 | break; | |
a58c490f JG |
119 | default: |
120 | ERR("Attempted to create evaluation of unknown type (%i)", | |
121 | (int) evaluation_comm->type); | |
122 | ret = -1; | |
123 | goto end; | |
124 | } | |
125 | ret = evaluation_size; | |
126 | end: | |
127 | return ret; | |
128 | } | |
129 | ||
130 | enum lttng_condition_type lttng_evaluation_get_type( | |
131 | const struct lttng_evaluation *evaluation) | |
132 | { | |
133 | return evaluation ? evaluation->type : LTTNG_CONDITION_TYPE_UNKNOWN; | |
134 | } | |
135 | ||
136 | void lttng_evaluation_destroy(struct lttng_evaluation *evaluation) | |
137 | { | |
138 | if (!evaluation) { | |
139 | return; | |
140 | } | |
141 | ||
142 | assert(evaluation->destroy); | |
143 | evaluation->destroy(evaluation); | |
144 | } |