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2c5ff4e4 JG |
1 | /* |
2 | * Copyright (C) 2019 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
4 | * This program 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 program 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 program; if not, write to the Free Software Foundation, | |
15 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
16 | */ | |
17 | ||
18 | #include <common/dynamic-array.h> | |
19 | ||
20 | LTTNG_HIDDEN | |
21 | void lttng_dynamic_array_init(struct lttng_dynamic_array *array, | |
93bed9fe JG |
22 | size_t element_size, |
23 | lttng_dynamic_array_element_destructor destructor) | |
2c5ff4e4 JG |
24 | { |
25 | lttng_dynamic_buffer_init(&array->buffer); | |
26 | array->element_size = element_size; | |
93bed9fe JG |
27 | array->size = 0; |
28 | array->destructor = destructor; | |
2c5ff4e4 JG |
29 | } |
30 | ||
31 | LTTNG_HIDDEN | |
32 | int lttng_dynamic_array_add_element(struct lttng_dynamic_array *array, | |
33 | const void *element) | |
34 | { | |
35 | int ret; | |
36 | ||
37 | if (!array || !element) { | |
38 | ret = -1; | |
39 | goto end; | |
40 | } | |
41 | ||
42 | ret = lttng_dynamic_buffer_append(&array->buffer, element, | |
43 | array->element_size); | |
44 | if (ret) { | |
45 | goto end; | |
46 | } | |
47 | array->size++; | |
48 | end: | |
49 | return ret; | |
50 | } | |
51 | ||
52 | LTTNG_HIDDEN | |
93bed9fe JG |
53 | int lttng_dynamic_array_remove_element(struct lttng_dynamic_array *array, |
54 | size_t element_index) | |
2c5ff4e4 | 55 | { |
93bed9fe JG |
56 | void *element = lttng_dynamic_array_get_element(array, |
57 | element_index); | |
58 | ||
59 | if (array->destructor) { | |
60 | array->destructor(element); | |
61 | } | |
62 | if (element_index != lttng_dynamic_array_get_count(array) - 1) { | |
63 | void *next_element = lttng_dynamic_array_get_element(array, | |
64 | element_index + 1); | |
65 | ||
66 | memmove(element, next_element, | |
67 | (array->size - element_index - 1) * array->element_size); | |
68 | } | |
69 | array->size--; | |
70 | return lttng_dynamic_buffer_set_size(&array->buffer, | |
71 | array->buffer.size - array->element_size); | |
72 | } | |
73 | ||
74 | LTTNG_HIDDEN | |
75 | void lttng_dynamic_array_reset(struct lttng_dynamic_array *array) | |
76 | { | |
77 | if (array->destructor) { | |
2c5ff4e4 JG |
78 | size_t i; |
79 | ||
80 | for (i = 0; i < lttng_dynamic_array_get_count(array); i++) { | |
93bed9fe JG |
81 | array->destructor(lttng_dynamic_array_get_element(array, |
82 | i)); | |
2c5ff4e4 JG |
83 | } |
84 | } | |
85 | ||
86 | lttng_dynamic_buffer_reset(&array->buffer); | |
87 | array->size = 0; | |
88 | } | |
89 | ||
90 | LTTNG_HIDDEN | |
91 | void lttng_dynamic_pointer_array_init( | |
93bed9fe JG |
92 | struct lttng_dynamic_pointer_array *array, |
93 | lttng_dynamic_pointer_array_destructor destructor) | |
2c5ff4e4 | 94 | { |
93bed9fe | 95 | lttng_dynamic_array_init(&array->array, sizeof(void *), destructor); |
2c5ff4e4 JG |
96 | } |
97 | ||
98 | /* Release any memory used by the dynamic array. */ | |
99 | LTTNG_HIDDEN | |
100 | void lttng_dynamic_pointer_array_reset( | |
93bed9fe | 101 | struct lttng_dynamic_pointer_array *array) |
2c5ff4e4 | 102 | { |
93bed9fe | 103 | if (array->array.destructor) { |
2c5ff4e4 JG |
104 | size_t i, count = lttng_dynamic_pointer_array_get_count(array); |
105 | ||
106 | for (i = 0; i < count; i++) { | |
107 | void *ptr = lttng_dynamic_pointer_array_get_pointer( | |
108 | array, i); | |
93bed9fe | 109 | array->array.destructor(ptr); |
2c5ff4e4 | 110 | } |
93bed9fe | 111 | array->array.destructor = NULL; |
2c5ff4e4 | 112 | } |
93bed9fe | 113 | lttng_dynamic_array_reset(&array->array); |
2c5ff4e4 | 114 | } |