/* Preallocate this many fields for structures */
#define DEFAULT_NR_STRUCT_FIELDS 8
-/*
- * Always update stream_pos with move_pos and init_pos.
- */
-struct stream_pos {
- char *base; /* Base address */
- size_t offset; /* Offset from base, in bits */
- int dummy; /* Dummy position, for length calculation */
-};
-
-static inline
-void init_pos(struct stream_pos *pos, char *base)
-{
- pos->base = base; /* initial base, page-aligned */
- pos->offset = 0;
- pos->dummy = false;
-}
-
-/*
- * move_pos - move position of a relative bit offset
- *
- * TODO: allow larger files by updating base too.
- */
-static inline
-void move_pos(struct stream_pos *pos, size_t offset)
-{
- pos->offset = pos->offset + offset;
-}
-
-/*
- * align_pos - align position on a bit offset (> 0)
- *
- * TODO: allow larger files by updating base too.
- */
-static inline
-void align_pos(struct stream_pos *pos, size_t offset)
-{
- pos->offset += offset_align(pos->offset, offset);
-}
-
-static inline
-void copy_pos(struct stream_pos *dest, struct stream_pos *src)
-{
- memcpy(dest, src, sizeof(struct stream_pos));
-}
-
-static inline
-char *get_pos_addr(struct stream_pos *pos)
-{
- /* Only makes sense to get the address after aligning on CHAR_BIT */
- assert(!(pos->offset % CHAR_BIT));
- return pos->base + (pos->offset / CHAR_BIT);
-}
-
+struct ctf_stream_class;
+struct stream_pos;
struct format;
struct definition;
/* type scope */
struct declaration_scope {
/* Hash table mapping type name GQuark to "struct declaration" */
+ /* Used for both typedef and typealias. */
GHashTable *typedef_declarations;
/* Hash table mapping struct name GQuark to "struct declaration_struct" */
GHashTable *struct_declarations;
struct definition_scope *parent_scope;
/*
* Complete "path" leading to this definition scope.
- * Includes trace/stream/event '.' field name '.' field name '.' ....
+ * Includes dynamic scope name '.' field name '.' field name '.' ....
* Array of GQuark elements (which are each separated by dots).
+ * The dynamic scope name can contain dots, and is encoded into
+ * a single GQuark. Thus, scope_path[0] returns the GQuark
+ * identifying the dynamic scope.
*/
GArray *scope_path; /* array of GQuark */
};
CTF_TYPE_ENUM,
CTF_TYPE_STRING,
CTF_TYPE_STRUCT,
+ CTF_TYPE_UNTAGGED_VARIANT,
CTF_TYPE_VARIANT,
CTF_TYPE_ARRAY,
CTF_TYPE_SEQUENCE,
struct declaration {
enum ctf_type_id id;
- GQuark name; /* type name */
size_t alignment; /* type alignment, in bits */
int ref; /* number of references to the type */
/*
* definition_free called with definition ref is decremented to 0.
*/
void (*definition_free)(struct definition *definition);
- /*
- * Definition copy function. Knows how to find the child
- * definition from the parent definition.
- */
- void (*copy)(struct stream_pos *dest, const struct format *fdest,
- struct stream_pos *src, const struct format *fsrc,
- struct definition *definition);
};
struct definition {
struct declaration *declaration;
int index; /* Position of the definition in its container */
+ GQuark name; /* Field name in its container (or 0 if unset) */
int ref; /* number of references to the definition */
+ GQuark path;
};
+typedef int (*rw_dispatch)(struct stream_pos *pos,
+ struct definition *definition);
+
+/* Parent of per-plugin positions */
+struct stream_pos {
+ /* read/write dispatch table. Specific to plugin used for stream. */
+ rw_dispatch *rw_table; /* rw dispatch table */
+ int (*event_cb)(struct stream_pos *pos,
+ struct ctf_stream_class *stream_class);
+};
+
+static inline
+int generic_rw(struct stream_pos *pos, struct definition *definition)
+{
+ enum ctf_type_id dispatch_id = definition->declaration->id;
+ rw_dispatch call;
+
+ assert(pos->rw_table[dispatch_id] != NULL);
+ call = pos->rw_table[dispatch_id];
+ return call(pos, definition);
+}
+
/*
* Because we address in bits, bitfields end up being exactly the same as
* integers, except that their read/write functions must be able to deal with
struct definition_float {
struct definition p;
struct declaration_float *declaration;
+ struct definition_integer *sign;
+ struct definition_integer *mantissa;
+ struct definition_integer *exp;
/* Last values read */
long double value;
};
GArray *value;
};
+enum ctf_string_encoding {
+ CTF_STRING_UTF8 = 0,
+ CTF_STRING_ASCII,
+ CTF_STRING_UNKNOWN,
+};
+
struct declaration_string {
struct declaration p;
+ enum ctf_string_encoding encoding;
};
struct definition_string {
struct definition p;
struct declaration_string *declaration;
char *value; /* freed at definition_string teardown */
+ size_t len, alloc_len;
};
struct declaration_field {
struct declaration *declaration;
};
-struct field {
- GQuark name;
- struct definition *definition;
-};
-
struct declaration_struct {
struct declaration p;
GHashTable *fields_by_name; /* Tuples (field name, field index) */
struct definition p;
struct declaration_struct *declaration;
struct definition_scope *scope;
- GArray *fields; /* Array of struct field */
+ GPtrArray *fields; /* Array of pointers to struct definition */
};
-struct declaration_variant {
+struct declaration_untagged_variant {
struct declaration p;
GHashTable *fields_by_tag; /* Tuples (field tag, field index) */
struct declaration_scope *scope;
GArray *fields; /* Array of declaration_field */
- GQuark tag_name; /* TODO */
- /* Tag name must be nonzero and must exist when defining the variant */
};
+struct declaration_variant {
+ struct declaration p;
+ struct declaration_untagged_variant *untagged_variant;
+ GArray *tag_name; /* Array of GQuark */
+};
+
+/* A variant needs to be tagged to be defined. */
struct definition_variant {
struct definition p;
struct declaration_variant *declaration;
struct definition_scope *scope;
struct definition *enum_tag;
- GArray *fields; /* Array of struct field */
- struct field *current_field; /* Last field read */
+ GPtrArray *fields; /* Array of pointers to struct definition */
+ struct definition *current_field; /* Last field read */
};
struct declaration_array {
struct definition p;
struct declaration_array *declaration;
struct definition_scope *scope;
- struct field current_element; /* struct field */
+ GPtrArray *elems; /* Array of pointers to struct definition */
};
struct declaration_sequence {
struct declaration_sequence *declaration;
struct definition_scope *scope;
struct definition_integer *len;
- struct field current_element; /* struct field */
+ GPtrArray *elems; /* Array of pointers to struct definition */
};
int register_declaration(GQuark declaration_name,
struct declaration *declaration,
struct declaration_scope *scope);
struct declaration *lookup_declaration(GQuark declaration_name,
- struct declaration_scope *scope);
+ struct declaration_scope *scope);
/*
* Type scopes also contain a separate registry for struct, variant and
lookup_struct_declaration(GQuark struct_name,
struct declaration_scope *scope);
int register_variant_declaration(GQuark variant_name,
- struct declaration_variant *variant_declaration,
+ struct declaration_untagged_variant *untagged_variant_declaration,
struct declaration_scope *scope);
-struct declaration_variant *lookup_variant_declaration(GQuark variant_name,
+struct declaration_untagged_variant *lookup_variant_declaration(GQuark variant_name,
struct declaration_scope *scope);
int register_enum_declaration(GQuark enum_name,
struct declaration_enum *enum_declaration,
struct definition_scope *
new_definition_scope(struct definition_scope *parent_scope,
GQuark field_name);
+void set_dynamic_definition_scope(struct definition *definition,
+ struct definition_scope *scope,
+ const char *root_name);
void free_definition_scope(struct definition_scope *scope);
+GQuark new_definition_path(struct definition_scope *parent_scope, GQuark field_name);
+
+static inline
+int compare_definition_path(struct definition *definition, GQuark path)
+{
+ return definition->path == path;
+}
+
void declaration_ref(struct declaration *declaration);
void declaration_unref(struct declaration *declaration);
void definition_ref(struct definition *definition);
void definition_unref(struct definition *definition);
-/* Nameless declarations can be created by passing a NULL name */
-
-struct declaration_integer *integer_declaration_new(const char *name,
- size_t len, int byte_order,
+struct declaration_integer *integer_declaration_new(size_t len, int byte_order,
int signedness, size_t alignment);
/*
* mantissa_len is the length of the number of bytes represented by the mantissa
* (e.g. result of DBL_MANT_DIG). It includes the leading 1.
*/
-struct declaration_float *float_declaration_new(const char *name,
- size_t mantissa_len,
+struct declaration_float *float_declaration_new(size_t mantissa_len,
size_t exp_len, int byte_order,
size_t alignment);
size_t enum_get_nr_enumerators(struct declaration_enum *enum_declaration);
struct declaration_enum *
- enum_declaration_new(const char *name,
- struct declaration_integer *integer_declaration);
+ enum_declaration_new(struct declaration_integer *integer_declaration);
+
+struct declaration_string *
+ string_declaration_new(enum ctf_string_encoding encoding);
struct declaration_struct *
- struct_declaration_new(const char *name,
- struct declaration_scope *parent_scope);
+ struct_declaration_new(struct declaration_scope *parent_scope);
void struct_declaration_add_field(struct declaration_struct *struct_declaration,
const char *field_name,
struct declaration *field_declaration);
/*
* Returns the index of a field within a structure.
*/
-unsigned long struct_declaration_lookup_field_index(struct declaration_struct *struct_declaration,
+int struct_declaration_lookup_field_index(struct declaration_struct *struct_declaration,
GQuark field_name);
/*
* 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);
-struct field *
-struct_get_field_from_index(struct definition_struct *struct_definition,
- unsigned long index);
+ int index);
+struct definition *
+struct_definition_get_field_from_index(struct definition_struct *struct_definition,
+ int index);
+int struct_rw(struct stream_pos *pos, struct definition *definition);
/*
* The tag enumeration is validated to ensure that it contains only mappings
* from numeric values to a single tag. Overlapping tag value ranges are
* therefore forbidden.
*/
-struct declaration_variant *variant_declaration_new(const char *name,
+struct declaration_untagged_variant *untagged_variant_declaration_new(
struct declaration_scope *parent_scope);
-void variant_declaration_add_field(struct declaration_variant *variant_declaration,
- const char *tag_name,
- struct declaration *tag_declaration);
+struct declaration_variant *variant_declaration_new(struct declaration_untagged_variant *untagged_variant,
+ const char *tag);
+
+void untagged_variant_declaration_add_field(struct declaration_untagged_variant *untagged_variant_declaration,
+ const char *field_name,
+ struct declaration *field_declaration);
struct declaration_field *
- variant_declaration_get_field_from_tag(struct declaration_variant *variant_declaration,
+ untagged_variant_declaration_get_field_from_tag(struct declaration_untagged_variant *untagged_variant_declaration,
GQuark tag);
/*
* Returns 0 on success, -EPERM on error.
* field returned only valid as long as the variant structure is not appended
* to.
*/
-struct field *variant_get_current_field(struct definition_variant *variant);
+struct definition *variant_get_current_field(struct definition_variant *variant);
+int variant_rw(struct stream_pos *pos, struct definition *definition);
/*
* elem_declaration passed as parameter now belongs to the array. No
* array.
*/
struct declaration_array *
- array_declaration_new(const char *name,
- size_t len, struct declaration *elem_declaration,
+ array_declaration_new(size_t len, struct declaration *elem_declaration,
struct declaration_scope *parent_scope);
+uint64_t array_len(struct definition_array *array);
+struct definition *array_index(struct definition_array *array, uint64_t i);
+int array_rw(struct stream_pos *pos, struct definition *definition);
/*
* int_declaration and elem_declaration passed as parameter now belong
* to the sequence. No need to free them explicitly.
*/
struct declaration_sequence *
- sequence_declaration_new(const char *name,
- struct declaration_integer *len_declaration,
+ sequence_declaration_new(struct declaration_integer *len_declaration,
struct declaration *elem_declaration,
struct declaration_scope *parent_scope);
+uint64_t sequence_len(struct definition_sequence *sequence);
+struct definition *sequence_index(struct definition_sequence *sequence, uint64_t i);
+int sequence_rw(struct stream_pos *pos, struct definition *definition);
+
+/*
+ * in: path (dot separated), out: q (GArray of GQuark)
+ */
+void append_scope_path(const char *path, GArray *q);
-#endif /* _BABELTRACE_declarationS_H */
+#endif /* _BABELTRACE_TYPES_H */
projects / babeltrace.git / blobdiff