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
,
74 struct declaration_struct
*struct_declaration
;
75 struct declaration
*declaration
;
77 struct_declaration
= g_new(struct declaration_struct
, 1);
78 declaration
= &struct_declaration
->p
;
79 struct_declaration
->fields_by_name
= g_hash_table_new(g_direct_hash
,
81 struct_declaration
->fields
= g_array_sized_new(FALSE
, TRUE
,
82 sizeof(struct declaration_field
),
83 DEFAULT_NR_STRUCT_FIELDS
);
84 struct_declaration
->scope
= new_declaration_scope(parent_scope
);
85 declaration
->id
= CTF_TYPE_STRUCT
;
86 declaration
->alignment
= max(1, min_align
);
87 declaration
->declaration_free
= _struct_declaration_free
;
88 declaration
->definition_new
= _struct_definition_new
;
89 declaration
->definition_free
= _struct_definition_free
;
91 return struct_declaration
;
96 _struct_definition_new(struct declaration
*declaration
,
97 struct definition_scope
*parent_scope
,
98 GQuark field_name
, int index
)
100 struct declaration_struct
*struct_declaration
=
101 container_of(declaration
, struct declaration_struct
, p
);
102 struct definition_struct
*_struct
;
106 _struct
= g_new(struct definition_struct
, 1);
107 declaration_ref(&struct_declaration
->p
);
108 _struct
->p
.declaration
= declaration
;
109 _struct
->declaration
= struct_declaration
;
111 _struct
->p
.index
= index
;
112 _struct
->p
.name
= field_name
;
113 _struct
->p
.path
= new_definition_path(parent_scope
, field_name
);
114 _struct
->scope
= new_definition_scope(parent_scope
, field_name
);
115 _struct
->fields
= g_ptr_array_sized_new(DEFAULT_NR_STRUCT_FIELDS
);
116 g_ptr_array_set_size(_struct
->fields
, struct_declaration
->fields
->len
);
117 for (i
= 0; i
< struct_declaration
->fields
->len
; i
++) {
118 struct declaration_field
*declaration_field
=
119 &g_array_index(struct_declaration
->fields
,
120 struct declaration_field
, i
);
121 struct definition
**field
=
122 (struct definition
**) &g_ptr_array_index(_struct
->fields
, i
);
124 *field
= declaration_field
->declaration
->definition_new(declaration_field
->declaration
,
126 declaration_field
->name
, i
);
127 ret
= register_field_definition(declaration_field
->name
,
136 void _struct_definition_free(struct definition
*definition
)
138 struct definition_struct
*_struct
=
139 container_of(definition
, struct definition_struct
, p
);
142 assert(_struct
->fields
->len
== _struct
->declaration
->fields
->len
);
143 for (i
= 0; i
< _struct
->fields
->len
; i
++) {
144 struct definition
*field
= g_ptr_array_index(_struct
->fields
, i
);
145 definition_unref(field
);
147 free_definition_scope(_struct
->scope
);
148 declaration_unref(_struct
->p
.declaration
);
152 void struct_declaration_add_field(struct declaration_struct
*struct_declaration
,
153 const char *field_name
,
154 struct declaration
*field_declaration
)
156 struct declaration_field
*field
;
159 g_array_set_size(struct_declaration
->fields
, struct_declaration
->fields
->len
+ 1);
160 index
= struct_declaration
->fields
->len
- 1; /* last field (new) */
161 field
= &g_array_index(struct_declaration
->fields
, struct declaration_field
, index
);
162 field
->name
= g_quark_from_string(field_name
);
163 declaration_ref(field_declaration
);
164 field
->declaration
= field_declaration
;
165 /* Keep index in hash rather than pointer, because array can relocate */
166 g_hash_table_insert(struct_declaration
->fields_by_name
,
167 (gpointer
) (unsigned long) field
->name
,
170 * Alignment of structure is the max alignment of declarations contained
173 struct_declaration
->p
.alignment
= max(struct_declaration
->p
.alignment
,
174 field_declaration
->alignment
);
178 * struct_declaration_lookup_field_index - returns field index
180 * Returns the index of a field in a structure, or -1 if it does not
183 int struct_declaration_lookup_field_index(struct declaration_struct
*struct_declaration
,
189 found
= g_hash_table_lookup_extended(struct_declaration
->fields_by_name
,
190 (gconstpointer
) (unsigned long) field_name
,
194 return (int) (unsigned long) index
;
198 * field returned only valid as long as the field structure is not appended to.
200 struct declaration_field
*
201 struct_declaration_get_field_from_index(struct declaration_struct
*struct_declaration
,
206 return &g_array_index(struct_declaration
->fields
, struct declaration_field
, index
);
210 * field returned only valid as long as the field structure is not appended to.
213 struct_definition_get_field_from_index(struct definition_struct
*_struct
,
218 return g_ptr_array_index(_struct
->fields
, index
);
221 uint64_t struct_declaration_len(struct declaration_struct
*struct_declaration
)
223 return struct_declaration
->fields
->len
;
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