4 * BabelTrace - Structure Type Converter
6 * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
19 #include <babeltrace/compiler.h>
20 #include <babeltrace/format.h>
23 #define max(a, b) ((a) < (b) ? (b) : (a))
26 void struct_copy(struct stream_pos
*dest
, const struct format
*fdest
,
27 struct stream_pos
*src
, const struct format
*fsrc
,
28 const struct type_class
*type_class
)
30 struct type_class_struct
*struct_class
=
31 container_of(type_class
, struct type_class_struct
, p
);
34 fsrc
->struct_begin(src
, struct_class
);
35 fdest
->struct_begin(dest
, struct_class
);
37 for (i
= 0; i
< struct_class
->fields
->len
; i
++) {
38 struct field
*field
= &g_array_index(struct_class
->fields
,
40 struct type_class
*field_class
= field
->type_class
;
42 field_class
->copy(dest
, fdest
, src
, fsrc
, field_class
);
45 fsrc
->struct_end(src
, struct_class
);
46 fdest
->struct_end(dest
, struct_class
);
49 void struct_type_free(struct type_class_struct
*struct_class
)
53 g_hash_table_destroy(struct_class
->fields_by_name
);
55 for (i
= 0; i
< struct_class
->fields
->len
; i
++) {
56 struct field
*field
= &g_array_index(struct_class
->fields
,
58 type_unref(field
->type_class
);
60 g_array_free(struct_class
->fields
, true);
64 static void _struct_type_free(struct type_class
*type_class
)
66 struct type_class_struct
*struct_class
=
67 container_of(type_class
, struct type_class_struct
, p
);
68 struct_type_free(struct_class
);
71 struct type_class_struct
*struct_type_new(const char *name
)
73 struct type_class_struct
*struct_class
;
74 struct type_class
*type_class
;
77 struct_class
= g_new(struct type_class_struct
, 1);
78 type_class
= &struct_class
->p
;
80 struct_class
->fields_by_name
= g_hash_table_new(g_direct_hash
,
82 struct_class
->fields
= g_array_sized_new(false, false,
84 DEFAULT_NR_STRUCT_FIELDS
);
85 type_class
->name
= g_quark_from_string(name
);
86 type_class
->alignment
= 1;
87 type_class
->copy
= struct_copy
;
88 type_class
->free
= _struct_type_free
;
91 if (type_class
->name
) {
92 ret
= register_type(type_class
);
103 void struct_type_add_field(struct type_class_struct
*struct_class
,
104 const char *field_name
,
105 struct type_class
*type_class
)
110 g_array_set_size(struct_class
->fields
, struct_class
->fields
->len
+ 1);
111 index
= struct_class
->fields
->len
- 1; /* last field (new) */
112 field
= &g_array_index(struct_class
->fields
, struct field
, index
);
113 field
->name
= g_quark_from_string(field_name
);
114 type_ref(type_class
);
115 field
->type_class
= type_class
;
116 /* Keep index in hash rather than pointer, because array can relocate */
117 g_hash_table_insert(struct_class
->fields_by_name
,
118 (gpointer
) (unsigned long) field
->name
,
121 * Alignment of structure is the max alignment of types contained
124 struct_class
->p
.alignment
= max(struct_class
->p
.alignment
,
125 type_class
->alignment
);
129 struct_type_lookup_field_index(struct type_class_struct
*struct_class
,
134 index
= (unsigned long) g_hash_table_lookup(struct_class
->fields_by_name
,
135 (gconstpointer
) (unsigned long) field_name
);
140 * field returned only valid as long as the field structure is not appended to.
143 struct_type_get_field_from_index(struct type_class_struct
*struct_class
,
146 return &g_array_index(struct_class
->fields
, struct field
, index
);
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