-#include <babeltrace/compat/limits.h>
-#include <string.h>
-#include <glib.h>
-#include <assert.h>
-
-/* Preallocate this many fields for structures */
-#define DEFAULT_NR_STRUCT_FIELDS 8
-
-struct ctf_stream_definition;
-struct bt_stream_pos;
-struct bt_format;
-struct bt_definition;
-struct ctf_clock;
-
-/* 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;
- /* Hash table mapping variant name GQuark to "struct declaration_variant" */
- GHashTable *variant_declarations;
- /* Hash table mapping enum name GQuark to "struct type_enum" */
- GHashTable *enum_declarations;
- struct declaration_scope *parent_scope;
-};
-
-/* definition scope */
-struct definition_scope {
- /* Hash table mapping field name GQuark to "struct definition" */
- GHashTable *definitions;
- struct definition_scope *parent_scope;
- /*
- * Complete "path" leading to this definition scope.
- * 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 */
-};
-
-struct bt_declaration {
- enum bt_ctf_type_id id;
- size_t alignment; /* type alignment, in bits */
- int ref; /* number of references to the type */
- /*
- * declaration_free called with declaration ref is decremented to 0.
- */
- void (*declaration_free)(struct bt_declaration *declaration);
- struct bt_definition *
- (*definition_new)(struct bt_declaration *declaration,
- struct definition_scope *parent_scope,
- GQuark field_name, int index,
- const char *root_name);
- /*
- * definition_free called with definition ref is decremented to 0.
- */
- void (*definition_free)(struct bt_definition *definition);
-};
-
-struct bt_definition {
- struct bt_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;
- struct definition_scope *scope;
-};
-
-typedef int (*rw_dispatch)(struct bt_stream_pos *pos,
- struct bt_definition *definition);
-
-/* Parent of per-plugin positions */
-struct bt_stream_pos {
- /* read/write dispatch table. Specific to plugin used for stream. */
- rw_dispatch *rw_table; /* rw dispatch table */
- int (*event_cb)(struct bt_stream_pos *pos,
- struct ctf_stream_definition *stream);
- int (*pre_trace_cb)(struct bt_stream_pos *pos,
- struct bt_trace_descriptor *trace);
- int (*post_trace_cb)(struct bt_stream_pos *pos,
- struct bt_trace_descriptor *trace);
- struct bt_trace_descriptor *trace;
-};
-
-static inline
-int generic_rw(struct bt_stream_pos *pos, struct bt_definition *definition)
-{
- enum bt_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
- * read/write non aligned on CHAR_BIT.
- */
-struct declaration_integer {
- struct bt_declaration p;
- size_t len; /* length, in bits. */
- int byte_order; /* LITTLE_ENDIAN/BIG_ENDIAN, 0 == "Native" */
- int signedness;
- int base; /* Base for pretty-printing: 2, 8, 10, 16 */
- enum ctf_string_encoding encoding;
- struct ctf_clock *clock;
-};
-
-struct definition_integer {
- struct bt_definition p;
- struct declaration_integer *declaration;
- /* Last values read */
- union {
- uint64_t _unsigned;
- int64_t _signed;
- } value;
-};
-
-struct declaration_float {
- struct bt_declaration p;
- struct declaration_integer *sign;
- struct declaration_integer *mantissa;
- struct declaration_integer *exp;
- int byte_order; /* LITTLE_ENDIAN/BIG_ENDIAN, 0 == "Native" */
- /* TODO: we might want to express more info about NaN, +inf and -inf */
-};
-
-struct definition_float {
- struct bt_definition p;
- struct declaration_float *declaration;
- struct definition_integer *sign;
- struct definition_integer *mantissa;
- struct definition_integer *exp;
- /* Last values read */
- double value;
-};
-
-/*
- * enum_val_equal assumes that signed and unsigned memory layout overlap.
- */
-struct enum_range {
- union {
- int64_t _signed;
- uint64_t _unsigned;
- } start; /* lowest range value */
- union {
- int64_t _signed;
- uint64_t _unsigned;
- } end; /* highest range value */
-};
-
-struct enum_range_to_quark {
- struct bt_list_head node;
- struct enum_range range;
- GQuark quark;
-};
-
-/*
- * We optimize the common case (range of size 1: single value) by creating a
- * hash table mapping values to quark sets. We then lookup the ranges to
- * complete the quark set.
- *
- * TODO: The proper structure to hold the range to quark set mapping would be an
- * interval tree, with O(n) size, O(n*log(n)) build time and O(log(n)) query
- * time. Using a simple O(n) list search for now for implementation speed and
- * given that we can expect to have a _relatively_ small number of enumeration
- * ranges. This might become untrue if we are fed with symbol tables often
- * required to lookup function names from instruction pointer value.
- */
-struct enum_table {
- GHashTable *value_to_quark_set; /* (value, GQuark GArray) */
- struct bt_list_head range_to_quark; /* (range, GQuark) */
- GHashTable *quark_to_range_set; /* (GQuark, range GArray) */
-};
-
-struct declaration_enum {
- struct bt_declaration p;
- struct declaration_integer *integer_declaration;
- struct enum_table table;
-};
-
-struct definition_enum {
- struct bt_definition p;
- struct definition_integer *integer;
- struct declaration_enum *declaration;
- /* Last GQuark values read. Keeping a reference on the GQuark array. */
- GArray *value;
-};
-
-struct declaration_string {
- struct bt_declaration p;
- enum ctf_string_encoding encoding;
-};
-
-struct definition_string {
- struct bt_definition p;
- struct declaration_string *declaration;
- char *value; /* freed at definition_string teardown */
- size_t len, alloc_len;
-};
-
-struct declaration_field {
- GQuark name;
- struct bt_declaration *declaration;
-};