| 1 | /* |
| 2 | * sequence.c |
| 3 | * |
| 4 | * BabelTrace - Sequence Type Converter |
| 5 | * |
| 6 | * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 7 | * |
| 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: |
| 14 | * |
| 15 | * The above copyright notice and this permission notice shall be included in |
| 16 | * all copies or substantial portions of the Software. |
| 17 | */ |
| 18 | |
| 19 | #include <babeltrace/compiler.h> |
| 20 | #include <babeltrace/format.h> |
| 21 | |
| 22 | #ifndef max |
| 23 | #define max(a, b) ((a) < (b) ? (b) : (a)) |
| 24 | #endif |
| 25 | |
| 26 | static |
| 27 | struct definition *_sequence_definition_new(struct declaration *declaration, |
| 28 | struct definition_scope *parent_scope, |
| 29 | GQuark field_name, int index); |
| 30 | static |
| 31 | void _sequence_definition_free(struct definition *definition); |
| 32 | |
| 33 | void sequence_copy(struct stream_pos *dest, const struct format *fdest, |
| 34 | struct stream_pos *src, const struct format *fsrc, |
| 35 | struct definition *definition) |
| 36 | { |
| 37 | struct definition_sequence *sequence = |
| 38 | container_of(definition, struct definition_sequence, p); |
| 39 | struct declaration_sequence *sequence_declaration = sequence->declaration; |
| 40 | uint64_t i; |
| 41 | |
| 42 | fsrc->sequence_begin(src, sequence_declaration); |
| 43 | fdest->sequence_begin(dest, sequence_declaration); |
| 44 | |
| 45 | sequence->len->p.declaration->copy(dest, fdest, src, fsrc, |
| 46 | &sequence->len->p); |
| 47 | |
| 48 | for (i = 0; i < sequence->len->value._unsigned; i++) { |
| 49 | struct definition *elem = |
| 50 | sequence->current_element.definition; |
| 51 | elem->declaration->copy(dest, fdest, src, fsrc, elem); |
| 52 | } |
| 53 | fsrc->sequence_end(src, sequence_declaration); |
| 54 | fdest->sequence_end(dest, sequence_declaration); |
| 55 | } |
| 56 | |
| 57 | static |
| 58 | void _sequence_declaration_free(struct declaration *declaration) |
| 59 | { |
| 60 | struct declaration_sequence *sequence_declaration = |
| 61 | container_of(declaration, struct declaration_sequence, p); |
| 62 | |
| 63 | free_declaration_scope(sequence_declaration->scope); |
| 64 | declaration_unref(&sequence_declaration->len_declaration->p); |
| 65 | declaration_unref(sequence_declaration->elem); |
| 66 | g_free(sequence_declaration); |
| 67 | } |
| 68 | |
| 69 | struct declaration_sequence * |
| 70 | sequence_declaration_new(struct declaration_integer *len_declaration, |
| 71 | struct declaration *elem_declaration, |
| 72 | struct declaration_scope *parent_scope) |
| 73 | { |
| 74 | struct declaration_sequence *sequence_declaration; |
| 75 | struct declaration *declaration; |
| 76 | |
| 77 | sequence_declaration = g_new(struct declaration_sequence, 1); |
| 78 | declaration = &sequence_declaration->p; |
| 79 | assert(!len_declaration->signedness); |
| 80 | declaration_ref(&len_declaration->p); |
| 81 | sequence_declaration->len_declaration = len_declaration; |
| 82 | declaration_ref(elem_declaration); |
| 83 | sequence_declaration->elem = elem_declaration; |
| 84 | sequence_declaration->scope = new_declaration_scope(parent_scope); |
| 85 | declaration->id = CTF_TYPE_SEQUENCE; |
| 86 | declaration->alignment = max(len_declaration->p.alignment, elem_declaration->alignment); |
| 87 | declaration->copy = sequence_copy; |
| 88 | declaration->declaration_free = _sequence_declaration_free; |
| 89 | declaration->definition_new = _sequence_definition_new; |
| 90 | declaration->definition_free = _sequence_definition_free; |
| 91 | declaration->ref = 1; |
| 92 | return sequence_declaration; |
| 93 | } |
| 94 | |
| 95 | static |
| 96 | struct definition *_sequence_definition_new(struct declaration *declaration, |
| 97 | struct definition_scope *parent_scope, |
| 98 | GQuark field_name, int index) |
| 99 | { |
| 100 | struct declaration_sequence *sequence_declaration = |
| 101 | container_of(declaration, struct declaration_sequence, p); |
| 102 | struct definition_sequence *sequence; |
| 103 | struct definition *len_parent; |
| 104 | |
| 105 | sequence = g_new(struct definition_sequence, 1); |
| 106 | declaration_ref(&sequence_declaration->p); |
| 107 | sequence->p.declaration = declaration; |
| 108 | sequence->declaration = sequence_declaration; |
| 109 | sequence->p.ref = 1; |
| 110 | sequence->p.index = index; |
| 111 | sequence->scope = new_definition_scope(parent_scope, field_name); |
| 112 | len_parent = sequence_declaration->len_declaration->p.definition_new(&sequence_declaration->len_declaration->p, |
| 113 | parent_scope, |
| 114 | g_quark_from_static_string("length"), 0); |
| 115 | sequence->len = |
| 116 | container_of(len_parent, struct definition_integer, p); |
| 117 | sequence->current_element.definition = |
| 118 | sequence_declaration->elem->definition_new(sequence_declaration->elem, |
| 119 | parent_scope, |
| 120 | g_quark_from_static_string("[]"), 1); |
| 121 | return &sequence->p; |
| 122 | } |
| 123 | |
| 124 | static |
| 125 | void _sequence_definition_free(struct definition *definition) |
| 126 | { |
| 127 | struct definition_sequence *sequence = |
| 128 | container_of(definition, struct definition_sequence, p); |
| 129 | struct definition *len_definition = &sequence->len->p; |
| 130 | struct definition *elem_definition = |
| 131 | sequence->current_element.definition; |
| 132 | |
| 133 | len_definition->declaration->definition_free(len_definition); |
| 134 | elem_definition->declaration->definition_free(elem_definition); |
| 135 | free_definition_scope(sequence->scope); |
| 136 | declaration_unref(sequence->p.declaration); |
| 137 | g_free(sequence); |
| 138 | } |