4 * BabelTrace - Structure Type Converter
6 * Copyright 2010, 2011 - 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))
27 struct definition
*_struct_definition_new(struct declaration
*declaration
,
28 struct definition_scope
*parent_scope
,
29 GQuark field_name
, int index
);
31 void _struct_definition_free(struct definition
*definition
);
33 int struct_rw(struct stream_pos
*ppos
, struct definition
*definition
)
35 struct definition_struct
*struct_definition
=
36 container_of(definition
, struct definition_struct
, p
);
40 for (i
= 0; i
< struct_definition
->fields
->len
; i
++) {
41 struct definition
*field
=
42 g_ptr_array_index(struct_definition
->fields
, i
);
43 ret
= generic_rw(ppos
, field
);
51 void _struct_declaration_free(struct declaration
*declaration
)
53 struct declaration_struct
*struct_declaration
=
54 container_of(declaration
, struct declaration_struct
, p
);
57 free_declaration_scope(struct_declaration
->scope
);
58 g_hash_table_destroy(struct_declaration
->fields_by_name
);
60 for (i
= 0; i
< struct_declaration
->fields
->len
; i
++) {
61 struct declaration_field
*declaration_field
=
62 &g_array_index(struct_declaration
->fields
,
63 struct declaration_field
, i
);
64 declaration_unref(declaration_field
->declaration
);
66 g_array_free(struct_declaration
->fields
, true);
67 g_free(struct_declaration
);
70 struct declaration_struct
*
71 struct_declaration_new(struct declaration_scope
*parent_scope
)
73 struct declaration_struct
*struct_declaration
;
74 struct declaration
*declaration
;
76 struct_declaration
= g_new(struct declaration_struct
, 1);
77 declaration
= &struct_declaration
->p
;
78 struct_declaration
->fields_by_name
= g_hash_table_new(g_direct_hash
,
80 struct_declaration
->fields
= g_array_sized_new(FALSE
, TRUE
,
81 sizeof(struct declaration_field
),
82 DEFAULT_NR_STRUCT_FIELDS
);
83 struct_declaration
->scope
= new_declaration_scope(parent_scope
);
84 declaration
->id
= CTF_TYPE_STRUCT
;
85 declaration
->alignment
= 1;
86 declaration
->declaration_free
= _struct_declaration_free
;
87 declaration
->definition_new
= _struct_definition_new
;
88 declaration
->definition_free
= _struct_definition_free
;
90 return struct_declaration
;
95 _struct_definition_new(struct declaration
*declaration
,
96 struct definition_scope
*parent_scope
,
97 GQuark field_name
, int index
)
99 struct declaration_struct
*struct_declaration
=
100 container_of(declaration
, struct declaration_struct
, p
);
101 struct definition_struct
*_struct
;
105 _struct
= g_new(struct definition_struct
, 1);
106 declaration_ref(&struct_declaration
->p
);
107 _struct
->p
.declaration
= declaration
;
108 _struct
->declaration
= struct_declaration
;
110 _struct
->p
.index
= index
;
111 _struct
->p
.name
= field_name
;
112 _struct
->scope
= new_definition_scope(parent_scope
, field_name
);
113 _struct
->fields
= g_ptr_array_sized_new(DEFAULT_NR_STRUCT_FIELDS
);
114 g_ptr_array_set_size(_struct
->fields
, struct_declaration
->fields
->len
);
115 for (i
= 0; i
< struct_declaration
->fields
->len
; i
++) {
116 struct declaration_field
*declaration_field
=
117 &g_array_index(struct_declaration
->fields
,
118 struct declaration_field
, i
);
119 struct definition
**field
=
120 (struct definition
**) &g_ptr_array_index(_struct
->fields
, i
);
122 *field
= declaration_field
->declaration
->definition_new(declaration_field
->declaration
,
124 declaration_field
->name
, i
);
125 ret
= register_field_definition(declaration_field
->name
,
134 void _struct_definition_free(struct definition
*definition
)
136 struct definition_struct
*_struct
=
137 container_of(definition
, struct definition_struct
, p
);
140 assert(_struct
->fields
->len
== _struct
->declaration
->fields
->len
);
141 for (i
= 0; i
< _struct
->fields
->len
; i
++) {
142 struct definition
*field
= g_ptr_array_index(_struct
->fields
, i
);
143 definition_unref(field
);
145 free_definition_scope(_struct
->scope
);
146 declaration_unref(_struct
->p
.declaration
);
150 void struct_declaration_add_field(struct declaration_struct
*struct_declaration
,
151 const char *field_name
,
152 struct declaration
*field_declaration
)
154 struct declaration_field
*field
;
157 g_array_set_size(struct_declaration
->fields
, struct_declaration
->fields
->len
+ 1);
158 index
= struct_declaration
->fields
->len
- 1; /* last field (new) */
159 field
= &g_array_index(struct_declaration
->fields
, struct declaration_field
, index
);
160 field
->name
= g_quark_from_string(field_name
);
161 declaration_ref(field_declaration
);
162 field
->declaration
= field_declaration
;
163 /* Keep index in hash rather than pointer, because array can relocate */
164 g_hash_table_insert(struct_declaration
->fields_by_name
,
165 (gpointer
) (unsigned long) field
->name
,
168 * Alignment of structure is the max alignment of declarations contained
171 struct_declaration
->p
.alignment
= max(struct_declaration
->p
.alignment
,
172 field_declaration
->alignment
);
176 * struct_declaration_lookup_field_index - returns field index
178 * Returns the index of a field in a structure, or -1 if it does not
181 int struct_declaration_lookup_field_index(struct declaration_struct
*struct_declaration
,
187 found
= g_hash_table_lookup_extended(struct_declaration
->fields_by_name
,
188 (gconstpointer
) (unsigned long) field_name
,
192 return (int) (unsigned long) index
;
196 * field returned only valid as long as the field structure is not appended to.
198 struct declaration_field
*
199 struct_declaration_get_field_from_index(struct declaration_struct
*struct_declaration
,
204 return &g_array_index(struct_declaration
->fields
, struct declaration_field
, index
);
208 * field returned only valid as long as the field structure is not appended to.
211 struct_definition_get_field_from_index(struct definition_struct
*_struct
,
216 return g_ptr_array_index(_struct
->fields
, index
);
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