Various fixes for prototype branch
[lttng-tools.git] / include / lttng / condition / buffer-usage-internal.h
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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>
e892d3f7 23#include <lttng/condition/evaluation-internal.h>
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24#include <lttng/domain.h>
25
26struct lttng_condition_buffer_usage {
27 struct lttng_condition parent;
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28 struct {
29 bool set;
30 uint64_t value;
31 } threshold_bytes;
32 struct {
33 bool set;
34 double value;
3c47cdaf 35 } threshold_ratio;
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36 char *session_name;
37 char *channel_name;
38 struct {
39 bool set;
40 enum lttng_domain_type type;
41 } domain;
42};
43
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44struct lttng_condition_buffer_usage_comm {
45 uint8_t threshold_set_in_bytes;
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46 /*
47 * Expressed in bytes if "threshold_set_in_bytes" is not 0.
48 * Otherwise, it is expressed a ratio in the interval [0.0, 1.0]
49 * that is mapped to the range on a 64-bit unsigned integer.
50 * The ratio is obtained by (threshold / UINT64_MAX).
51 */
52 uint64_t threshold;
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53 /* Both lengths include the trailing \0. */
54 uint32_t session_name_len;
55 uint32_t channel_name_len;
56 /* enum lttng_domain_type */
57 int8_t domain_type;
58 /* session and channel names. */
59 char names[];
60} LTTNG_PACKED;
61
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62struct lttng_evaluation_buffer_usage {
63 struct lttng_evaluation parent;
64 uint64_t buffer_use;
65 uint64_t buffer_capacity;
66};
67
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68struct lttng_evaluation_buffer_usage_comm {
69 uint64_t buffer_use;
70 uint64_t buffer_capacity;
71} LTTNG_PACKED;
72
e892d3f7 73LTTNG_HIDDEN
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74struct lttng_evaluation *lttng_evaluation_buffer_usage_create(
75 enum lttng_condition_type type, uint64_t use,
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76 uint64_t capacity);
77
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78LTTNG_HIDDEN
79ssize_t lttng_condition_buffer_usage_low_create_from_buffer(const char *buf,
80 struct lttng_condition **condition);
81
82LTTNG_HIDDEN
83ssize_t lttng_condition_buffer_usage_high_create_from_buffer(const char *buf,
84 struct lttng_condition **condition);
85
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86LTTNG_HIDDEN
87ssize_t lttng_evaluation_buffer_usage_low_create_from_buffer(const char *buf,
88 struct lttng_evaluation **evaluation);
89
90LTTNG_HIDDEN
91ssize_t lttng_evaluation_buffer_usage_high_create_from_buffer(const char *buf,
92 struct lttng_evaluation **evaluation);
93
94
95
f42dcd79 96#endif /* LTTNG_CONDITION_BUFFER_USAGE_INTERNAL_H */
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