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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 | #ifndef LTTNG_CONDITION_BUFFER_USAGE_INTERNAL_H | |
19 | #define LTTNG_CONDITION_BUFFER_USAGE_INTERNAL_H | |
20 | ||
21 | #include <lttng/condition/buffer-usage.h> | |
22 | #include <lttng/condition/condition-internal.h> | |
23 | #include <lttng/condition/evaluation-internal.h> | |
24 | #include <lttng/domain.h> | |
25 | #include "common/buffer-view.h" | |
26 | ||
27 | struct lttng_condition_buffer_usage { | |
28 | struct lttng_condition parent; | |
29 | struct { | |
30 | bool set; | |
31 | uint64_t value; | |
32 | } threshold_bytes; | |
33 | struct { | |
34 | bool set; | |
35 | double value; | |
36 | } threshold_ratio; | |
37 | char *session_name; | |
38 | char *channel_name; | |
39 | struct { | |
40 | bool set; | |
41 | enum lttng_domain_type type; | |
42 | } domain; | |
43 | }; | |
44 | ||
45 | struct lttng_condition_buffer_usage_comm { | |
46 | uint8_t threshold_set_in_bytes; | |
47 | /* | |
48 | * Expressed in bytes if "threshold_set_in_bytes" is not 0. | |
49 | * Otherwise, it is expressed a ratio in the interval [0.0, 1.0] | |
50 | * that is mapped to the range on a 32-bit unsigned integer. | |
51 | * The ratio is obtained by (threshold / UINT32_MAX). | |
52 | */ | |
53 | uint32_t threshold; | |
54 | /* Both lengths include the trailing \0. */ | |
55 | uint32_t session_name_len; | |
56 | uint32_t channel_name_len; | |
57 | /* enum lttng_domain_type */ | |
58 | int8_t domain_type; | |
59 | /* session and channel names. */ | |
60 | char names[]; | |
61 | } LTTNG_PACKED; | |
62 | ||
63 | struct lttng_evaluation_buffer_usage { | |
64 | struct lttng_evaluation parent; | |
65 | uint64_t buffer_use; | |
66 | uint64_t buffer_capacity; | |
67 | }; | |
68 | ||
69 | struct lttng_evaluation_buffer_usage_comm { | |
70 | uint64_t buffer_use; | |
71 | uint64_t buffer_capacity; | |
72 | } LTTNG_PACKED; | |
73 | ||
74 | LTTNG_HIDDEN | |
75 | struct lttng_evaluation *lttng_evaluation_buffer_usage_create( | |
76 | enum lttng_condition_type type, uint64_t use, | |
77 | uint64_t capacity); | |
78 | ||
79 | LTTNG_HIDDEN | |
80 | ssize_t lttng_condition_buffer_usage_low_create_from_buffer( | |
81 | const struct lttng_buffer_view *view, | |
82 | struct lttng_condition **condition); | |
83 | ||
84 | LTTNG_HIDDEN | |
85 | ssize_t lttng_condition_buffer_usage_high_create_from_buffer( | |
86 | const struct lttng_buffer_view *view, | |
87 | struct lttng_condition **condition); | |
88 | ||
89 | LTTNG_HIDDEN | |
90 | ssize_t lttng_evaluation_buffer_usage_low_create_from_buffer( | |
91 | const struct lttng_buffer_view *view, | |
92 | struct lttng_evaluation **evaluation); | |
93 | ||
94 | LTTNG_HIDDEN | |
95 | ssize_t lttng_evaluation_buffer_usage_high_create_from_buffer( | |
96 | const struct lttng_buffer_view *view, | |
97 | struct lttng_evaluation **evaluation); | |
98 | ||
99 | #endif /* LTTNG_CONDITION_BUFFER_USAGE_INTERNAL_H */ |