Commit | Line | Data |
---|---|---|
2e7d72cf | 1 | /* |
ccd7e1c8 | 2 | * sequence.c |
2e7d72cf | 3 | * |
ccd7e1c8 | 4 | * BabelTrace - Sequence Type Converter |
2e7d72cf | 5 | * |
c054553d | 6 | * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
2e7d72cf | 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: | |
2e7d72cf | 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. | |
2e7d72cf MD |
17 | */ |
18 | ||
19 | #include <babeltrace/compiler.h> | |
4c8bfb7e | 20 | #include <babeltrace/format.h> |
0f980a35 | 21 | #include <inttypes.h> |
2e7d72cf | 22 | |
be85c1c7 MD |
23 | #ifndef max |
24 | #define max(a, b) ((a) < (b) ? (b) : (a)) | |
25 | #endif | |
26 | ||
c054553d | 27 | static |
f6625916 | 28 | struct definition *_sequence_definition_new(struct declaration *declaration, |
05c749e5 MD |
29 | struct definition_scope *parent_scope, |
30 | GQuark field_name, int index); | |
c054553d | 31 | static |
e1151715 | 32 | void _sequence_definition_free(struct definition *definition); |
c054553d | 33 | |
c5e74408 | 34 | int sequence_rw(struct stream_pos *pos, struct definition *definition) |
2e7d72cf | 35 | { |
d11e9c49 | 36 | struct definition_sequence *sequence_definition = |
e1151715 | 37 | container_of(definition, struct definition_sequence, p); |
d11e9c49 MD |
38 | const struct declaration_sequence *sequence_declaration = |
39 | sequence_definition->declaration; | |
0f980a35 | 40 | uint64_t len, oldlen, i; |
c5e74408 | 41 | int ret; |
2e7d72cf | 42 | |
c5e74408 MD |
43 | ret = generic_rw(pos, &sequence_definition->len->p); |
44 | if (ret) | |
45 | return ret; | |
d11e9c49 | 46 | len = sequence_definition->len->value._unsigned; |
0f980a35 MD |
47 | /* |
48 | * Yes, large sequences could be _painfully slow_ to parse due | |
49 | * to memory allocation for each event read. At least, never | |
50 | * shrink the sequence. Note: the sequence GArray len should | |
51 | * never be used as indicator of the current sequence length. | |
52 | * One should always look at the sequence->len->value._unsigned | |
53 | * value for that. | |
54 | */ | |
d11e9c49 | 55 | oldlen = sequence_definition->elems->len; |
0f980a35 | 56 | if (oldlen < len) |
b1a2f580 | 57 | g_ptr_array_set_size(sequence_definition->elems, len); |
0f980a35 MD |
58 | |
59 | for (i = oldlen; i < len; i++) { | |
b1a2f580 | 60 | struct definition **field; |
0f980a35 MD |
61 | GString *str; |
62 | GQuark name; | |
63 | ||
64 | str = g_string_new(""); | |
65 | g_string_printf(str, "[%" PRIu64 "]", i); | |
66 | (void) g_string_free(str, TRUE); | |
67 | name = g_quark_from_string(str->str); | |
2e7d72cf | 68 | |
b1a2f580 MD |
69 | field = (struct definition **) &g_ptr_array_index(sequence_definition->elems, i); |
70 | *field = sequence_declaration->elem->definition_new(sequence_declaration->elem, | |
d11e9c49 | 71 | sequence_definition->scope, |
0f980a35 | 72 | name, i); |
b1a2f580 | 73 | ret = generic_rw(pos, *field); |
c5e74408 MD |
74 | if (ret) |
75 | return ret; | |
2e7d72cf | 76 | } |
c5e74408 | 77 | return 0; |
2e7d72cf MD |
78 | } |
79 | ||
c054553d | 80 | static |
f6625916 | 81 | void _sequence_declaration_free(struct declaration *declaration) |
2e7d72cf | 82 | { |
f6625916 MD |
83 | struct declaration_sequence *sequence_declaration = |
84 | container_of(declaration, struct declaration_sequence, p); | |
c054553d | 85 | |
f6625916 MD |
86 | free_declaration_scope(sequence_declaration->scope); |
87 | declaration_unref(&sequence_declaration->len_declaration->p); | |
88 | declaration_unref(sequence_declaration->elem); | |
89 | g_free(sequence_declaration); | |
2e7d72cf MD |
90 | } |
91 | ||
f6625916 | 92 | struct declaration_sequence * |
ab4cf058 | 93 | sequence_declaration_new(struct declaration_integer *len_declaration, |
f6625916 MD |
94 | struct declaration *elem_declaration, |
95 | struct declaration_scope *parent_scope) | |
2e7d72cf | 96 | { |
f6625916 MD |
97 | struct declaration_sequence *sequence_declaration; |
98 | struct declaration *declaration; | |
2e7d72cf | 99 | |
f6625916 MD |
100 | sequence_declaration = g_new(struct declaration_sequence, 1); |
101 | declaration = &sequence_declaration->p; | |
102 | assert(!len_declaration->signedness); | |
103 | declaration_ref(&len_declaration->p); | |
104 | sequence_declaration->len_declaration = len_declaration; | |
105 | declaration_ref(elem_declaration); | |
106 | sequence_declaration->elem = elem_declaration; | |
107 | sequence_declaration->scope = new_declaration_scope(parent_scope); | |
108 | declaration->id = CTF_TYPE_SEQUENCE; | |
f6625916 | 109 | declaration->alignment = max(len_declaration->p.alignment, elem_declaration->alignment); |
f6625916 MD |
110 | declaration->declaration_free = _sequence_declaration_free; |
111 | declaration->definition_new = _sequence_definition_new; | |
112 | declaration->definition_free = _sequence_definition_free; | |
113 | declaration->ref = 1; | |
114 | return sequence_declaration; | |
2e7d72cf | 115 | } |
c054553d MD |
116 | |
117 | static | |
f6625916 | 118 | struct definition *_sequence_definition_new(struct declaration *declaration, |
05c749e5 MD |
119 | struct definition_scope *parent_scope, |
120 | GQuark field_name, int index) | |
c054553d | 121 | { |
f6625916 MD |
122 | struct declaration_sequence *sequence_declaration = |
123 | container_of(declaration, struct declaration_sequence, p); | |
e1151715 MD |
124 | struct definition_sequence *sequence; |
125 | struct definition *len_parent; | |
c054553d | 126 | |
e1151715 | 127 | sequence = g_new(struct definition_sequence, 1); |
f6625916 MD |
128 | declaration_ref(&sequence_declaration->p); |
129 | sequence->p.declaration = declaration; | |
130 | sequence->declaration = sequence_declaration; | |
c054553d | 131 | sequence->p.ref = 1; |
05c749e5 | 132 | sequence->p.index = index; |
b1a2f580 | 133 | sequence->p.name = field_name; |
05c749e5 | 134 | sequence->scope = new_definition_scope(parent_scope, field_name); |
f6625916 | 135 | len_parent = sequence_declaration->len_declaration->p.definition_new(&sequence_declaration->len_declaration->p, |
0f980a35 | 136 | sequence->scope, |
05c749e5 | 137 | g_quark_from_static_string("length"), 0); |
e19c3d69 | 138 | sequence->len = |
e1151715 | 139 | container_of(len_parent, struct definition_integer, p); |
b1a2f580 | 140 | sequence->elems = g_ptr_array_new(); |
c054553d MD |
141 | return &sequence->p; |
142 | } | |
143 | ||
144 | static | |
e1151715 | 145 | void _sequence_definition_free(struct definition *definition) |
c054553d | 146 | { |
e1151715 MD |
147 | struct definition_sequence *sequence = |
148 | container_of(definition, struct definition_sequence, p); | |
149 | struct definition *len_definition = &sequence->len->p; | |
0f980a35 MD |
150 | uint64_t i; |
151 | ||
152 | for (i = 0; i < sequence->elems->len; i++) { | |
b1a2f580 | 153 | struct definition *field; |
c054553d | 154 | |
b1a2f580 MD |
155 | field = g_ptr_array_index(sequence->elems, i); |
156 | field->declaration->definition_free(field); | |
0f980a35 | 157 | } |
b1a2f580 | 158 | (void) g_ptr_array_free(sequence->elems, TRUE); |
f6625916 | 159 | len_definition->declaration->definition_free(len_definition); |
e1151715 | 160 | free_definition_scope(sequence->scope); |
f6625916 | 161 | declaration_unref(sequence->p.declaration); |
c054553d MD |
162 | g_free(sequence); |
163 | } | |
0f980a35 | 164 | |
3838df27 MD |
165 | uint64_t sequence_len(struct definition_sequence *sequence) |
166 | { | |
167 | return sequence->len->value._unsigned; | |
168 | } | |
169 | ||
0f980a35 MD |
170 | struct definition *sequence_index(struct definition_sequence *sequence, uint64_t i) |
171 | { | |
172 | if (i >= sequence->len->value._unsigned) | |
173 | return NULL; | |
174 | assert(i < sequence->elems->len); | |
b1a2f580 | 175 | return g_ptr_array_index(sequence->elems, i); |
0f980a35 | 176 | } |