Commit | Line | Data |
---|---|---|
11796b96 | 1 | /* |
ccd7e1c8 | 2 | * struct.c |
11796b96 | 3 | * |
ccd7e1c8 | 4 | * BabelTrace - Structure Type Converter |
11796b96 | 5 | * |
c054553d | 6 | * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
11796b96 | 7 | * |
ccd7e1c8 MD |
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: | |
11796b96 | 14 | * |
ccd7e1c8 MD |
15 | * The above copyright notice and this permission notice shall be included in |
16 | * all copies or substantial portions of the Software. | |
11796b96 MD |
17 | */ |
18 | ||
19 | #include <babeltrace/compiler.h> | |
4c8bfb7e | 20 | #include <babeltrace/format.h> |
11796b96 | 21 | |
be85c1c7 MD |
22 | #ifndef max |
23 | #define max(a, b) ((a) < (b) ? (b) : (a)) | |
24 | #endif | |
25 | ||
c054553d | 26 | static |
e19c3d69 MD |
27 | struct declaration *_struct_declaration_new(struct type *type, |
28 | struct declaration_scope *parent_scope); | |
c054553d | 29 | static |
e19c3d69 | 30 | void _struct_declaration_free(struct declaration *declaration); |
c054553d | 31 | |
11796b96 MD |
32 | void struct_copy(struct stream_pos *dest, const struct format *fdest, |
33 | struct stream_pos *src, const struct format *fsrc, | |
e19c3d69 | 34 | struct declaration *declaration) |
11796b96 | 35 | { |
e19c3d69 MD |
36 | struct declaration_struct *_struct = |
37 | container_of(declaration, struct declaration_struct, p); | |
38 | struct type_struct *struct_type = _struct->type; | |
c054553d | 39 | unsigned long i; |
11796b96 | 40 | |
e19c3d69 MD |
41 | fsrc->struct_begin(src, struct_type); |
42 | fdest->struct_begin(dest, struct_type); | |
11796b96 | 43 | |
c054553d MD |
44 | for (i = 0; i < _struct->fields->len; i++) { |
45 | struct field *field = &g_array_index(_struct->fields, | |
11796b96 | 46 | struct field, i); |
e19c3d69 | 47 | struct type *field_type = field->type->p.type; |
11796b96 | 48 | |
e19c3d69 | 49 | field_type->copy(dest, fdest, src, fsrc, &field->type->p); |
11796b96 MD |
50 | |
51 | } | |
e19c3d69 MD |
52 | fsrc->struct_end(src, struct_type); |
53 | fdest->struct_end(dest, struct_type); | |
11796b96 MD |
54 | } |
55 | ||
c054553d | 56 | static |
e19c3d69 | 57 | void _struct_type_free(struct type *type) |
11796b96 | 58 | { |
e19c3d69 MD |
59 | struct type_struct *struct_type = |
60 | container_of(type, struct type_struct, p); | |
c054553d | 61 | unsigned long i; |
4c8bfb7e | 62 | |
e19c3d69 | 63 | g_hash_table_destroy(struct_type->fields_by_name); |
4c8bfb7e | 64 | |
e19c3d69 MD |
65 | for (i = 0; i < struct_type->fields->len; i++) { |
66 | struct field *type_field = | |
67 | &g_array_index(struct_type->fields, | |
68 | struct type_field, i); | |
69 | type_unref(field->type); | |
4c8bfb7e | 70 | } |
e19c3d69 MD |
71 | g_array_free(struct_type->fields, true); |
72 | g_free(struct_type); | |
11796b96 MD |
73 | } |
74 | ||
e19c3d69 | 75 | struct type_struct *struct_type_new(const char *name) |
11796b96 | 76 | { |
e19c3d69 MD |
77 | struct type_struct *struct_type; |
78 | struct type *type; | |
11796b96 MD |
79 | int ret; |
80 | ||
e19c3d69 MD |
81 | struct_type = g_new(struct type_struct, 1); |
82 | type = &struct_type->p; | |
83 | struct_type->fields_by_name = g_hash_table_new(g_direct_hash, | |
84 | g_direct_equal); | |
85 | struct_type->fields = g_array_sized_new(FALSE, TRUE, | |
86 | sizeof(struct type_field), | |
87 | DEFAULT_NR_STRUCT_FIELDS); | |
88 | type->name = g_quark_from_string(name); | |
89 | type->alignment = 1; | |
90 | type->copy = struct_copy; | |
91 | type->type_free = _struct_type_free; | |
92 | type->declaration_new = _struct_declaration_new; | |
93 | type->declaration_free = _struct_declaration_free; | |
94 | type->ref = 1; | |
95 | ||
96 | if (type->name) { | |
97 | ret = register_type(type); | |
11796b96 MD |
98 | if (ret) |
99 | goto error_register; | |
100 | } | |
e19c3d69 | 101 | return struct_type; |
11796b96 MD |
102 | |
103 | error_register: | |
e19c3d69 MD |
104 | g_hash_table_destroy(struct_type->fields_by_name); |
105 | g_array_free(struct_type->fields, true); | |
106 | g_free(struct_type); | |
11796b96 MD |
107 | return NULL; |
108 | } | |
109 | ||
c054553d | 110 | static |
e19c3d69 MD |
111 | struct declaration * |
112 | _struct_declaration_new(struct type *type, | |
113 | struct declaration_scope *parent_scope) | |
11796b96 | 114 | { |
e19c3d69 MD |
115 | struct type_struct *struct_type = |
116 | container_of(type, struct type_struct, p); | |
117 | struct declaration_struct *_struct; | |
c054553d | 118 | |
e19c3d69 MD |
119 | _struct = g_new(struct declaration_struct, 1); |
120 | type_ref(&struct_type->p); | |
121 | _struct->p.type = struct_type; | |
c054553d MD |
122 | _struct->p.ref = 1; |
123 | _struct->scope = new_declaration_scope(parent_scope); | |
124 | _struct->fields = g_array_sized_new(FALSE, TRUE, | |
125 | sizeof(struct field), | |
126 | DEFAULT_NR_STRUCT_FIELDS); | |
127 | return &_struct->p; | |
128 | } | |
129 | ||
130 | static | |
e19c3d69 | 131 | void _struct_declaration_free(struct declaration *declaration) |
c054553d | 132 | { |
e19c3d69 MD |
133 | struct declaration_struct *_struct = |
134 | container_of(declaration, struct declaration_struct, p); | |
c054553d MD |
135 | unsigned long i; |
136 | ||
137 | for (i = 0; i < _struct->fields->len; i++) { | |
138 | struct field *field = &g_array_index(_struct->fields, | |
139 | struct field, i); | |
e19c3d69 | 140 | declaration_unref(field->declaration); |
c054553d MD |
141 | } |
142 | free_declaration_scope(_struct->scope); | |
e19c3d69 | 143 | type_unref(_struct->p.type); |
c054553d MD |
144 | g_free(_struct); |
145 | } | |
146 | ||
e19c3d69 MD |
147 | void struct_type_add_field(struct type_struct *struct_type, |
148 | const char *field_name, | |
149 | struct type *field_type) | |
c054553d | 150 | { |
e19c3d69 | 151 | struct type_field *field; |
11796b96 MD |
152 | unsigned long index; |
153 | ||
e19c3d69 MD |
154 | g_array_set_size(struct_type->fields, struct_type->fields->len + 1); |
155 | index = struct_type->fields->len - 1; /* last field (new) */ | |
156 | field = &g_array_index(struct_type->fields, struct type_field, index); | |
11796b96 | 157 | field->name = g_quark_from_string(field_name); |
e19c3d69 MD |
158 | type_ref(field_type); |
159 | field->type = field_type; | |
11796b96 | 160 | /* Keep index in hash rather than pointer, because array can relocate */ |
e19c3d69 | 161 | g_hash_table_insert(struct_type->fields_by_name, |
11796b96 MD |
162 | (gpointer) (unsigned long) field->name, |
163 | (gpointer) index); | |
164 | /* | |
165 | * Alignment of structure is the max alignment of types contained | |
166 | * therein. | |
167 | */ | |
e19c3d69 MD |
168 | struct_type->p.alignment = max(struct_type->p.alignment, |
169 | field_type->alignment); | |
11796b96 MD |
170 | } |
171 | ||
172 | unsigned long | |
e19c3d69 MD |
173 | struct_type_lookup_field_index(struct type_struct *struct_type, |
174 | GQuark field_name) | |
11796b96 MD |
175 | { |
176 | unsigned long index; | |
177 | ||
e19c3d69 | 178 | index = (unsigned long) g_hash_table_lookup(struct_type->fields_by_name, |
4c8bfb7e | 179 | (gconstpointer) (unsigned long) field_name); |
11796b96 MD |
180 | return index; |
181 | } | |
182 | ||
c054553d MD |
183 | /* |
184 | * field returned only valid as long as the field structure is not appended to. | |
185 | */ | |
e19c3d69 MD |
186 | struct type_field * |
187 | struct_type_get_field_from_index(struct type_struct *struct_type, | |
188 | unsigned long index) | |
c054553d | 189 | { |
e19c3d69 | 190 | return &g_array_index(struct_type->fields, struct type_field, index); |
c054553d MD |
191 | } |
192 | ||
11796b96 MD |
193 | /* |
194 | * field returned only valid as long as the field structure is not appended to. | |
195 | */ | |
196 | struct field * | |
e19c3d69 MD |
197 | struct_declaration_get_field_from_index(struct declaration_struct *_struct, |
198 | unsigned long index) | |
11796b96 | 199 | { |
e19c3d69 | 200 | return &g_array_index(_struct->fields, struct field, index); |
11796b96 | 201 | } |