Commit | Line | Data |
---|---|---|
2e7d72cf | 1 | /* |
ccd7e1c8 | 2 | * sequence.c |
2e7d72cf | 3 | * |
ccd7e1c8 | 4 | * BabelTrace - Sequence Type Converter |
2e7d72cf | 5 | * |
64fa3fec MD |
6 | * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation |
7 | * | |
8 | * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
2e7d72cf | 9 | * |
ccd7e1c8 MD |
10 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
11 | * of this software and associated documentation files (the "Software"), to deal | |
12 | * in the Software without restriction, including without limitation the rights | |
13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
14 | * copies of the Software, and to permit persons to whom the Software is | |
15 | * furnished to do so, subject to the following conditions: | |
2e7d72cf | 16 | * |
ccd7e1c8 MD |
17 | * The above copyright notice and this permission notice shall be included in |
18 | * all copies or substantial portions of the Software. | |
2e7d72cf MD |
19 | */ |
20 | ||
21 | #include <babeltrace/compiler.h> | |
4c8bfb7e | 22 | #include <babeltrace/format.h> |
0f980a35 | 23 | #include <inttypes.h> |
2e7d72cf | 24 | |
c054553d | 25 | static |
f6625916 | 26 | struct definition *_sequence_definition_new(struct declaration *declaration, |
05c749e5 | 27 | struct definition_scope *parent_scope, |
98df1c9f MD |
28 | GQuark field_name, int index, |
29 | const char *root_name); | |
c054553d | 30 | static |
e1151715 | 31 | void _sequence_definition_free(struct definition *definition); |
c054553d | 32 | |
c5e74408 | 33 | int sequence_rw(struct stream_pos *pos, struct definition *definition) |
2e7d72cf | 34 | { |
d11e9c49 | 35 | struct definition_sequence *sequence_definition = |
e1151715 | 36 | container_of(definition, struct definition_sequence, p); |
d11e9c49 MD |
37 | const struct declaration_sequence *sequence_declaration = |
38 | sequence_definition->declaration; | |
0f980a35 | 39 | uint64_t len, oldlen, i; |
c5e74408 | 40 | int ret; |
2e7d72cf | 41 | |
98df1c9f | 42 | len = sequence_definition->length->value._unsigned; |
0f980a35 MD |
43 | /* |
44 | * Yes, large sequences could be _painfully slow_ to parse due | |
45 | * to memory allocation for each event read. At least, never | |
46 | * shrink the sequence. Note: the sequence GArray len should | |
47 | * never be used as indicator of the current sequence length. | |
48 | * One should always look at the sequence->len->value._unsigned | |
49 | * value for that. | |
50 | */ | |
d11e9c49 | 51 | oldlen = sequence_definition->elems->len; |
0f980a35 | 52 | if (oldlen < len) |
b1a2f580 | 53 | g_ptr_array_set_size(sequence_definition->elems, len); |
0f980a35 MD |
54 | |
55 | for (i = oldlen; i < len; i++) { | |
b1a2f580 | 56 | struct definition **field; |
0f980a35 MD |
57 | GString *str; |
58 | GQuark name; | |
59 | ||
60 | str = g_string_new(""); | |
61 | g_string_printf(str, "[%" PRIu64 "]", i); | |
62 | (void) g_string_free(str, TRUE); | |
63 | name = g_quark_from_string(str->str); | |
2e7d72cf | 64 | |
b1a2f580 MD |
65 | field = (struct definition **) &g_ptr_array_index(sequence_definition->elems, i); |
66 | *field = sequence_declaration->elem->definition_new(sequence_declaration->elem, | |
a35173fe | 67 | sequence_definition->p.scope, |
98df1c9f | 68 | name, i, NULL); |
b1a2f580 | 69 | ret = generic_rw(pos, *field); |
c5e74408 MD |
70 | if (ret) |
71 | return ret; | |
2e7d72cf | 72 | } |
c5e74408 | 73 | return 0; |
2e7d72cf MD |
74 | } |
75 | ||
c054553d | 76 | static |
f6625916 | 77 | void _sequence_declaration_free(struct declaration *declaration) |
2e7d72cf | 78 | { |
f6625916 MD |
79 | struct declaration_sequence *sequence_declaration = |
80 | container_of(declaration, struct declaration_sequence, p); | |
c054553d | 81 | |
f6625916 | 82 | free_declaration_scope(sequence_declaration->scope); |
98df1c9f | 83 | g_array_free(sequence_declaration->length_name, TRUE); |
f6625916 MD |
84 | declaration_unref(sequence_declaration->elem); |
85 | g_free(sequence_declaration); | |
2e7d72cf MD |
86 | } |
87 | ||
f6625916 | 88 | struct declaration_sequence * |
98df1c9f | 89 | sequence_declaration_new(const char *length, |
f6625916 MD |
90 | struct declaration *elem_declaration, |
91 | struct declaration_scope *parent_scope) | |
2e7d72cf | 92 | { |
f6625916 MD |
93 | struct declaration_sequence *sequence_declaration; |
94 | struct declaration *declaration; | |
2e7d72cf | 95 | |
f6625916 MD |
96 | sequence_declaration = g_new(struct declaration_sequence, 1); |
97 | declaration = &sequence_declaration->p; | |
98df1c9f MD |
98 | |
99 | sequence_declaration->length_name = g_array_new(FALSE, TRUE, sizeof(GQuark)); | |
100 | append_scope_path(length, sequence_declaration->length_name); | |
101 | ||
f6625916 MD |
102 | declaration_ref(elem_declaration); |
103 | sequence_declaration->elem = elem_declaration; | |
104 | sequence_declaration->scope = new_declaration_scope(parent_scope); | |
105 | declaration->id = CTF_TYPE_SEQUENCE; | |
98df1c9f | 106 | declaration->alignment = elem_declaration->alignment; |
f6625916 MD |
107 | declaration->declaration_free = _sequence_declaration_free; |
108 | declaration->definition_new = _sequence_definition_new; | |
109 | declaration->definition_free = _sequence_definition_free; | |
110 | declaration->ref = 1; | |
111 | return sequence_declaration; | |
2e7d72cf | 112 | } |
c054553d MD |
113 | |
114 | static | |
f6625916 | 115 | struct definition *_sequence_definition_new(struct declaration *declaration, |
05c749e5 | 116 | struct definition_scope *parent_scope, |
98df1c9f MD |
117 | GQuark field_name, int index, |
118 | const char *root_name) | |
c054553d | 119 | { |
f6625916 MD |
120 | struct declaration_sequence *sequence_declaration = |
121 | container_of(declaration, struct declaration_sequence, p); | |
e1151715 MD |
122 | struct definition_sequence *sequence; |
123 | struct definition *len_parent; | |
98df1c9f | 124 | int ret; |
c054553d | 125 | |
e1151715 | 126 | sequence = g_new(struct definition_sequence, 1); |
f6625916 MD |
127 | declaration_ref(&sequence_declaration->p); |
128 | sequence->p.declaration = declaration; | |
129 | sequence->declaration = sequence_declaration; | |
c054553d | 130 | sequence->p.ref = 1; |
98df1c9f MD |
131 | /* |
132 | * Use INT_MAX order to ensure that all fields of the parent | |
133 | * scope are seen as being prior to this scope. | |
134 | */ | |
135 | sequence->p.index = root_name ? INT_MAX : index; | |
b1a2f580 | 136 | sequence->p.name = field_name; |
98df1c9f | 137 | sequence->p.path = new_definition_path(parent_scope, field_name, root_name); |
a35173fe | 138 | sequence->p.scope = new_definition_scope(parent_scope, field_name, root_name); |
98df1c9f MD |
139 | ret = register_field_definition(field_name, &sequence->p, |
140 | parent_scope); | |
141 | assert(!ret); | |
a35173fe MD |
142 | len_parent = lookup_path_definition(sequence->p.scope->scope_path, |
143 | sequence_declaration->length_name, | |
144 | parent_scope); | |
98df1c9f MD |
145 | if (!len_parent) { |
146 | printf("[error] Lookup for sequence length field failed.\n"); | |
147 | goto error; | |
148 | } | |
149 | sequence->length = | |
e1151715 | 150 | container_of(len_parent, struct definition_integer, p); |
98df1c9f MD |
151 | if (sequence->length->declaration->signedness) { |
152 | printf("[error] Sequence length field should be unsigned.\n"); | |
153 | goto error; | |
154 | } | |
155 | definition_ref(len_parent); | |
81dee1bb MD |
156 | |
157 | sequence->string = NULL; | |
158 | sequence->elems = NULL; | |
159 | ||
160 | if (sequence_declaration->elem->id == CTF_TYPE_INTEGER) { | |
161 | struct declaration_integer *integer_declaration = | |
162 | container_of(sequence_declaration->elem, struct declaration_integer, p); | |
163 | ||
164 | if (integer_declaration->encoding == CTF_STRING_UTF8 | |
165 | || integer_declaration->encoding == CTF_STRING_ASCII) { | |
166 | ||
167 | sequence->string = g_string_new(""); | |
168 | ||
169 | if (integer_declaration->len == CHAR_BIT | |
170 | && integer_declaration->p.alignment == CHAR_BIT) { | |
171 | return &sequence->p; | |
172 | } | |
173 | } | |
174 | } | |
175 | ||
b1a2f580 | 176 | sequence->elems = g_ptr_array_new(); |
c054553d | 177 | return &sequence->p; |
98df1c9f MD |
178 | |
179 | error: | |
a35173fe | 180 | free_definition_scope(sequence->p.scope); |
98df1c9f MD |
181 | declaration_unref(&sequence_declaration->p); |
182 | g_free(sequence); | |
183 | return NULL; | |
c054553d MD |
184 | } |
185 | ||
186 | static | |
e1151715 | 187 | void _sequence_definition_free(struct definition *definition) |
c054553d | 188 | { |
e1151715 MD |
189 | struct definition_sequence *sequence = |
190 | container_of(definition, struct definition_sequence, p); | |
98df1c9f | 191 | struct definition *len_definition = &sequence->length->p; |
0f980a35 MD |
192 | uint64_t i; |
193 | ||
81dee1bb MD |
194 | if (sequence->string) |
195 | (void) g_string_free(sequence->string, TRUE); | |
196 | if (sequence->elems) { | |
197 | for (i = 0; i < sequence->elems->len; i++) { | |
198 | struct definition *field; | |
c054553d | 199 | |
81dee1bb MD |
200 | field = g_ptr_array_index(sequence->elems, i); |
201 | field->declaration->definition_free(field); | |
202 | } | |
0f980a35 | 203 | } |
b1a2f580 | 204 | (void) g_ptr_array_free(sequence->elems, TRUE); |
98df1c9f | 205 | definition_unref(len_definition); |
a35173fe | 206 | free_definition_scope(sequence->p.scope); |
f6625916 | 207 | declaration_unref(sequence->p.declaration); |
c054553d MD |
208 | g_free(sequence); |
209 | } | |
0f980a35 | 210 | |
3838df27 MD |
211 | uint64_t sequence_len(struct definition_sequence *sequence) |
212 | { | |
98df1c9f | 213 | return sequence->length->value._unsigned; |
3838df27 MD |
214 | } |
215 | ||
0f980a35 MD |
216 | struct definition *sequence_index(struct definition_sequence *sequence, uint64_t i) |
217 | { | |
81dee1bb MD |
218 | if (!sequence->elems) |
219 | return NULL; | |
98df1c9f | 220 | if (i >= sequence->length->value._unsigned) |
0f980a35 MD |
221 | return NULL; |
222 | assert(i < sequence->elems->len); | |
b1a2f580 | 223 | return g_ptr_array_index(sequence->elems, i); |
0f980a35 | 224 | } |