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1 | /* |
2 | * BabelTrace - Sequence Type Converter | |
3 | * | |
4 | * Copyright (c) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
5 | * | |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2.1 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with this library; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <babeltrace/compiler.h> | |
22 | #include <babeltrace/types.h> | |
23 | ||
24 | void sequence_copy(struct stream_pos *dest, const struct format *fdest, | |
25 | struct stream_pos *src, const struct format *fsrc, | |
26 | const struct type_class *type_class) | |
27 | { | |
28 | struct type_class_sequence *sequence_class = | |
29 | container_of(type_class, struct type_class_sequence, p); | |
30 | unsigned int i; | |
31 | size_t len; | |
32 | ||
33 | fsrc->sequence_begin(src, sequence_class); | |
34 | fdest->sequence_begin(dest, sequence_class); | |
35 | ||
36 | len = fsrc->uint_read(src, sequence_class->len_class); | |
37 | fdest->uint_write(dest, sequence_class->len_class, len); | |
38 | ||
39 | for (i = 0; i < len; i++) { | |
40 | struct type_class *elem_class = sequence_class->elem; | |
41 | elem_class->copy(dest, fdest, src, fsrc, &elem_class->p); | |
42 | } | |
43 | fsrc->sequence_end(src, sequence_class); | |
44 | fdest->sequence_end(dest, sequence_class); | |
45 | } | |
46 | ||
47 | void sequence_type_free(struct type_class_sequence *sequence_class) | |
48 | { | |
49 | sequence_class->elem->free(&sequence_class->elem->p); | |
50 | g_free(sequence_class); | |
51 | } | |
52 | ||
53 | static void _sequence_type_free(struct type_class *type_class) | |
54 | { | |
55 | struct type_class_struct *sequence_class = | |
56 | container_of(type_class, struct type_class_sequence, p); | |
57 | sequence_type_free(sequence_class); | |
58 | } | |
59 | ||
60 | struct type_class_sequence * | |
61 | sequence_type_new(const char *name, struct type_class_integer *len_class, | |
62 | struct type_class *elem) | |
63 | { | |
64 | struct type_class_sequence *sequence_class; | |
65 | int ret; | |
66 | ||
67 | sequence_class = g_new(struct type_class_sequence, 1); | |
68 | type_class = &float_class->p; | |
69 | ||
70 | assert(!len_class->signedness); | |
71 | ||
72 | sequence_class->len = len; | |
73 | type_class->name = g_quark_from_string(name); | |
74 | type_class->alignment = max(len_class->p.alignment, | |
75 | elem->p.alignment); | |
76 | type_class->copy = sequence_copy; | |
77 | type_class->free = _sequence_type_free; | |
78 | ||
79 | if (type_class->name) { | |
80 | ret = ctf_register_type(type_class); | |
81 | if (ret) | |
82 | goto error_register; | |
83 | } | |
84 | return sequence_class; | |
85 | ||
86 | error_register: | |
87 | len_class->p.free(&len_class->p); | |
88 | sequence_class->elem->free(&sequence_class->elem->p); | |
89 | g_free(sequence_class); | |
90 | return NULL; | |
91 | } |