X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=types%2Fstruct.c;h=7eaa42426054b9a617c551da6fcc38006bcee7e7;hp=21465c732ba0075af41dce513187bae386a262ee;hb=12471830622f2f6e67bb14e3fdb112c70a5dbe5e;hpb=05c749e538ebc3a4f6735f62d022655cf92fc17e diff --git a/types/struct.c b/types/struct.c index 21465c73..7eaa4242 100644 --- a/types/struct.c +++ b/types/struct.c @@ -3,7 +3,9 @@ * * BabelTrace - Structure Type Converter * - * Copyright 2010, 2011 - Mathieu Desnoyers + * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation + * + * Author: Mathieu Desnoyers * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal @@ -14,71 +16,76 @@ * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. */ #include #include +#include +#include #ifndef max #define max(a, b) ((a) < (b) ? (b) : (a)) #endif static -struct definition *_struct_definition_new(struct declaration *declaration, +struct bt_definition *_struct_definition_new(struct bt_declaration *declaration, struct definition_scope *parent_scope, - GQuark field_name, int index); + GQuark field_name, int index, + const char *root_name); static -void _struct_definition_free(struct definition *definition); +void _struct_definition_free(struct bt_definition *definition); -void struct_copy(struct stream_pos *dest, const struct format *fdest, - struct stream_pos *src, const struct format *fsrc, - struct definition *definition) +int bt_struct_rw(struct bt_stream_pos *ppos, struct bt_definition *definition) { - struct definition_struct *_struct = + struct definition_struct *struct_definition = container_of(definition, struct definition_struct, p); - struct declaration_struct *struct_declaration = _struct->declaration; unsigned long i; + int ret; - fsrc->struct_begin(src, struct_declaration); - fdest->struct_begin(dest, struct_declaration); - - for (i = 0; i < _struct->fields->len; i++) { - struct field *field = &g_array_index(_struct->fields, - struct field, i); - struct declaration *field_declaration = field->definition->declaration; - - field_declaration->copy(dest, fdest, src, fsrc, field->definition); - + for (i = 0; i < struct_definition->fields->len; i++) { + struct bt_definition *field = + g_ptr_array_index(struct_definition->fields, i); + ret = generic_rw(ppos, field); + if (ret) + return ret; } - fsrc->struct_end(src, struct_declaration); - fdest->struct_end(dest, struct_declaration); + return 0; } static -void _struct_declaration_free(struct declaration *declaration) +void _struct_declaration_free(struct bt_declaration *declaration) { struct declaration_struct *struct_declaration = container_of(declaration, struct declaration_struct, p); unsigned long i; - free_declaration_scope(struct_declaration->scope); + bt_free_declaration_scope(struct_declaration->scope); g_hash_table_destroy(struct_declaration->fields_by_name); for (i = 0; i < struct_declaration->fields->len; i++) { struct declaration_field *declaration_field = &g_array_index(struct_declaration->fields, struct declaration_field, i); - declaration_unref(declaration_field->declaration); + bt_declaration_unref(declaration_field->declaration); } g_array_free(struct_declaration->fields, true); g_free(struct_declaration); } -struct declaration_struct *struct_declaration_new(const char *name, - struct declaration_scope *parent_scope) +struct declaration_struct * + bt_struct_declaration_new(struct declaration_scope *parent_scope, + uint64_t min_align) { struct declaration_struct *struct_declaration; - struct declaration *declaration; + struct bt_declaration *declaration; struct_declaration = g_new(struct declaration_struct, 1); declaration = &struct_declaration->p; @@ -87,11 +94,9 @@ struct declaration_struct *struct_declaration_new(const char *name, struct_declaration->fields = g_array_sized_new(FALSE, TRUE, sizeof(struct declaration_field), DEFAULT_NR_STRUCT_FIELDS); - struct_declaration->scope = new_declaration_scope(parent_scope); + struct_declaration->scope = bt_new_declaration_scope(parent_scope); declaration->id = CTF_TYPE_STRUCT; - declaration->name = g_quark_from_string(name); - declaration->alignment = 1; - declaration->copy = struct_copy; + declaration->alignment = max(1, min_align); declaration->declaration_free = _struct_declaration_free; declaration->definition_new = _struct_definition_new; declaration->definition_free = _struct_definition_free; @@ -100,50 +105,66 @@ struct declaration_struct *struct_declaration_new(const char *name, } static -struct definition * - _struct_definition_new(struct declaration *declaration, +struct bt_definition * + _struct_definition_new(struct bt_declaration *declaration, struct definition_scope *parent_scope, - GQuark field_name, int index) + GQuark field_name, int index, + const char *root_name) { struct declaration_struct *struct_declaration = container_of(declaration, struct declaration_struct, p); struct definition_struct *_struct; - unsigned long i; + int i; int ret; _struct = g_new(struct definition_struct, 1); - declaration_ref(&struct_declaration->p); + bt_declaration_ref(&struct_declaration->p); _struct->p.declaration = declaration; _struct->declaration = struct_declaration; _struct->p.ref = 1; - _struct->p.index = index; - _struct->scope = new_definition_scope(parent_scope, field_name); - _struct->fields = g_array_sized_new(FALSE, TRUE, - sizeof(struct field), - DEFAULT_NR_STRUCT_FIELDS); - g_array_set_size(_struct->fields, struct_declaration->fields->len); + /* + * Use INT_MAX order to ensure that all fields of the parent + * scope are seen as being prior to this scope. + */ + _struct->p.index = root_name ? INT_MAX : index; + _struct->p.name = field_name; + _struct->p.path = bt_new_definition_path(parent_scope, field_name, root_name); + _struct->p.scope = bt_new_definition_scope(parent_scope, field_name, root_name); + + ret = bt_register_field_definition(field_name, &_struct->p, + parent_scope); + assert(!ret || ret == -EPERM); + + _struct->fields = g_ptr_array_sized_new(DEFAULT_NR_STRUCT_FIELDS); + g_ptr_array_set_size(_struct->fields, struct_declaration->fields->len); for (i = 0; i < struct_declaration->fields->len; i++) { struct declaration_field *declaration_field = &g_array_index(struct_declaration->fields, struct declaration_field, i); - struct field *field = &g_array_index(_struct->fields, - struct field, i); - - field->name = declaration_field->name; - field->definition = - declaration_field->declaration->definition_new(declaration_field->declaration, - _struct->scope, - field->name, i); - ret = register_field_definition(field->name, - field->definition, - _struct->scope); - assert(!ret); + struct bt_definition **field = + (struct bt_definition **) &g_ptr_array_index(_struct->fields, i); + + *field = declaration_field->declaration->definition_new(declaration_field->declaration, + _struct->p.scope, + declaration_field->name, i, NULL); + if (!*field) + goto error; } return &_struct->p; + +error: + for (i--; i >= 0; i--) { + struct bt_definition *field = g_ptr_array_index(_struct->fields, i); + bt_definition_unref(field); + } + bt_free_definition_scope(_struct->p.scope); + bt_declaration_unref(&struct_declaration->p); + g_free(_struct); + return NULL; } static -void _struct_definition_free(struct definition *definition) +void _struct_definition_free(struct bt_definition *definition) { struct definition_struct *_struct = container_of(definition, struct definition_struct, p); @@ -151,18 +172,18 @@ void _struct_definition_free(struct definition *definition) assert(_struct->fields->len == _struct->declaration->fields->len); for (i = 0; i < _struct->fields->len; i++) { - struct field *field = &g_array_index(_struct->fields, - struct field, i); - definition_unref(field->definition); + struct bt_definition *field = g_ptr_array_index(_struct->fields, i); + bt_definition_unref(field); } - free_definition_scope(_struct->scope); - declaration_unref(_struct->p.declaration); + bt_free_definition_scope(_struct->p.scope); + bt_declaration_unref(_struct->p.declaration); + g_ptr_array_free(_struct->fields, TRUE); g_free(_struct); } -void struct_declaration_add_field(struct declaration_struct *struct_declaration, +void bt_struct_declaration_add_field(struct declaration_struct *struct_declaration, const char *field_name, - struct declaration *field_declaration) + struct bt_declaration *field_declaration) { struct declaration_field *field; unsigned long index; @@ -171,7 +192,7 @@ void struct_declaration_add_field(struct declaration_struct *struct_declaration, index = struct_declaration->fields->len - 1; /* last field (new) */ field = &g_array_index(struct_declaration->fields, struct declaration_field, index); field->name = g_quark_from_string(field_name); - declaration_ref(field_declaration); + bt_declaration_ref(field_declaration); field->declaration = field_declaration; /* Keep index in hash rather than pointer, because array can relocate */ g_hash_table_insert(struct_declaration->fields_by_name, @@ -185,33 +206,51 @@ void struct_declaration_add_field(struct declaration_struct *struct_declaration, field_declaration->alignment); } -unsigned long - struct_declaration_lookup_field_index(struct declaration_struct *struct_declaration, +/* + * bt_struct_declaration_lookup_field_index - returns field index + * + * Returns the index of a field in a structure, or -1 if it does not + * exist. + */ +int bt_struct_declaration_lookup_field_index(struct declaration_struct *struct_declaration, GQuark field_name) { - unsigned long index; + gpointer index; + gboolean found; - index = (unsigned long) g_hash_table_lookup(struct_declaration->fields_by_name, - (gconstpointer) (unsigned long) field_name); - return index; + found = g_hash_table_lookup_extended(struct_declaration->fields_by_name, + (gconstpointer) (unsigned long) field_name, + NULL, &index); + if (!found) + return -1; + return (int) (unsigned long) index; } /* * field returned only valid as long as the field structure is not appended to. */ struct declaration_field * - struct_declaration_get_field_from_index(struct declaration_struct *struct_declaration, - unsigned long index) + bt_struct_declaration_get_field_from_index(struct declaration_struct *struct_declaration, + int index) { + if (index < 0) + return NULL; return &g_array_index(struct_declaration->fields, struct declaration_field, index); } /* * field returned only valid as long as the field structure is not appended to. */ -struct field * -struct_definition_get_field_from_index(struct definition_struct *_struct, - unsigned long index) +struct bt_definition * +bt_struct_definition_get_field_from_index(const struct definition_struct *_struct, + int index) +{ + if (index < 0) + return NULL; + return g_ptr_array_index(_struct->fields, index); +} + +uint64_t bt_struct_declaration_len(const struct declaration_struct *struct_declaration) { - return &g_array_index(_struct->fields, struct field, index); + return struct_declaration->fields->len; }