Add missing include for ssize_t on Cygwin
[lttng-tools.git] / include / lttng / condition / buffer-usage-internal.h
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 */
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