| 1 | /* |
| 2 | * array.c |
| 3 | * |
| 4 | * BabelTrace - Array 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 | #include <inttypes.h> |
| 22 | |
| 23 | static |
| 24 | struct definition *_array_definition_new(struct declaration *declaration, |
| 25 | struct definition_scope *parent_scope, |
| 26 | GQuark field_name, int index); |
| 27 | static |
| 28 | void _array_definition_free(struct definition *definition); |
| 29 | |
| 30 | void array_rw(struct stream_pos *pos, struct definition *definition) |
| 31 | { |
| 32 | struct definition_array *array_definition = |
| 33 | container_of(definition, struct definition_array, p); |
| 34 | const struct declaration_array *array_declaration = |
| 35 | array_definition->declaration; |
| 36 | uint64_t i; |
| 37 | |
| 38 | /* No need to align, because the first field will align itself. */ |
| 39 | for (i = 0; i < array_declaration->len; i++) { |
| 40 | struct definition *elem = |
| 41 | g_array_index(array_definition->elems, struct field, i).definition; |
| 42 | generic_rw(pos, elem); |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | static |
| 47 | void _array_declaration_free(struct declaration *declaration) |
| 48 | { |
| 49 | struct declaration_array *array_declaration = |
| 50 | container_of(declaration, struct declaration_array, p); |
| 51 | |
| 52 | free_declaration_scope(array_declaration->scope); |
| 53 | declaration_unref(array_declaration->elem); |
| 54 | g_free(array_declaration); |
| 55 | } |
| 56 | |
| 57 | struct declaration_array * |
| 58 | array_declaration_new(size_t len, |
| 59 | struct declaration *elem_declaration, |
| 60 | struct declaration_scope *parent_scope) |
| 61 | { |
| 62 | struct declaration_array *array_declaration; |
| 63 | struct declaration *declaration; |
| 64 | |
| 65 | array_declaration = g_new(struct declaration_array, 1); |
| 66 | declaration = &array_declaration->p; |
| 67 | array_declaration->len = len; |
| 68 | declaration_ref(elem_declaration); |
| 69 | array_declaration->elem = elem_declaration; |
| 70 | array_declaration->scope = new_declaration_scope(parent_scope); |
| 71 | declaration->id = CTF_TYPE_ARRAY; |
| 72 | /* No need to align the array, the first element will align itself */ |
| 73 | declaration->alignment = 1; |
| 74 | declaration->declaration_free = _array_declaration_free; |
| 75 | declaration->definition_new = _array_definition_new; |
| 76 | declaration->definition_free = _array_definition_free; |
| 77 | declaration->ref = 1; |
| 78 | return array_declaration; |
| 79 | } |
| 80 | |
| 81 | static |
| 82 | struct definition * |
| 83 | _array_definition_new(struct declaration *declaration, |
| 84 | struct definition_scope *parent_scope, |
| 85 | GQuark field_name, int index) |
| 86 | { |
| 87 | struct declaration_array *array_declaration = |
| 88 | container_of(declaration, struct declaration_array, p); |
| 89 | struct definition_array *array; |
| 90 | uint64_t i; |
| 91 | |
| 92 | array = g_new(struct definition_array, 1); |
| 93 | declaration_ref(&array_declaration->p); |
| 94 | array->p.declaration = declaration; |
| 95 | array->declaration = array_declaration; |
| 96 | array->p.ref = 1; |
| 97 | array->p.index = index; |
| 98 | array->scope = new_definition_scope(parent_scope, field_name); |
| 99 | array->elems = g_array_sized_new(FALSE, TRUE, sizeof(struct field), |
| 100 | array_declaration->len); |
| 101 | g_array_set_size(array->elems, array_declaration->len); |
| 102 | for (i = 0; i < array_declaration->len; i++) { |
| 103 | struct field *field; |
| 104 | GString *str; |
| 105 | GQuark name; |
| 106 | |
| 107 | str = g_string_new(""); |
| 108 | g_string_printf(str, "[%" PRIu64 "]", i); |
| 109 | name = g_quark_from_string(str->str); |
| 110 | (void) g_string_free(str, TRUE); |
| 111 | |
| 112 | field = &g_array_index(array->elems, struct field, i); |
| 113 | field->name = name; |
| 114 | field->definition = array_declaration->elem->definition_new(array_declaration->elem, |
| 115 | array->scope, |
| 116 | name, i); |
| 117 | } |
| 118 | return &array->p; |
| 119 | } |
| 120 | |
| 121 | static |
| 122 | void _array_definition_free(struct definition *definition) |
| 123 | { |
| 124 | struct definition_array *array = |
| 125 | container_of(definition, struct definition_array, p); |
| 126 | uint64_t i; |
| 127 | |
| 128 | for (i = 0; i < array->elems->len; i++) { |
| 129 | struct field *field; |
| 130 | |
| 131 | field = &g_array_index(array->elems, struct field, i); |
| 132 | field->definition->declaration->definition_free(field->definition); |
| 133 | } |
| 134 | (void) g_array_free(array->elems, TRUE); |
| 135 | free_definition_scope(array->scope); |
| 136 | declaration_unref(array->p.declaration); |
| 137 | g_free(array); |
| 138 | } |
| 139 | |
| 140 | uint64_t array_len(struct definition_array *array) |
| 141 | { |
| 142 | return array->elems->len; |
| 143 | } |
| 144 | |
| 145 | struct definition *array_index(struct definition_array *array, uint64_t i) |
| 146 | { |
| 147 | if (i >= array->elems->len) |
| 148 | return NULL; |
| 149 | return g_array_index(array->elems, struct field, i).definition; |
| 150 | } |