#define LTT_GET_FLOAT_BO(t) \
(((t)->float_word_order==__BYTE_ORDER)?0:1)
+#define SEQUENCE_AVG_ELEMENTS 1000
+
/* Hardcoded core events */
enum ltt_core_events {
LTT_EVENT_FACILITY_LOAD,
struct LttFacilityLoad {
guint32 checksum;
guint32 id;
+ guint32 int_size;
guint32 long_size;
guint32 pointer_size;
guint32 size_t_size;
- guint32 alignment;
+ guint32 has_alignment;
} LTT_PACKED_STRUCT;
struct LttFacilityUnload {
struct LttStateDumpFacilityLoad {
guint32 checksum;
guint32 id;
+ guint32 int_size;
guint32 long_size;
guint32 pointer_size;
guint32 size_t_size;
- guint32 alignment;
+ guint32 has_alignment;
} LTT_PACKED_STRUCT;
typedef struct _TimeHeartbeat {
uint64_t start_freq;
uint64_t start_tsc;
uint64_t start_monotonic;
- struct timespec start_time;
+ struct timeval start_time;
} LTT_PACKED_STRUCT;
struct _LttType{
- GQuark type_name; //type name if it is a named type
- GQuark element_name; //elements name of the struct
+// LTTV does not care about type names. Everything is a field.
+// GQuark type_name; //type name if it is a named type
gchar * fmt;
- unsigned int size;
+ guint size;
LttTypeEnum type_class; //which type
- GQuark * enum_strings; //for enum labels
- struct _LttType ** element_type; //for array, sequence and struct
- unsigned element_number; //the number of elements
- //for enum, array, sequence and structure
+ GData *enum_map; //maps enum labels to numbers.
+ GArray *fields; // Array of LttFields, for array, sequence, union, struct.
+ GData *fields_by_name;
};
struct _LttEventType{
GQuark name;
gchar * description;
- guint index; //id of the event type within the facility
+ guint index; //id of the event type within the facility
LttFacility * facility; //the facility that contains the event type
- LttField * root_field; //root field
+ GArray * fields; //event's fields (LttField)
+ GData *fields_by_name;
};
/* Structure LttEvent and LttEventPosition must begin with the _exact_ same
enum field_status { FIELD_UNKNOWN, FIELD_VARIABLE, FIELD_FIXED };
struct _LttField{
- //guint field_pos; //field position within its parent
- LttType * field_type; //field type, if it is root field
- //then it must be struct type
-
- off_t offset_root; //offset from the root, -1:uninitialized
- enum field_status fixed_root; //offset fixed according to the root
- //-1:uninitialized, 0:unfixed, 1:fixed
- off_t offset_parent; //offset from the parent,-1:uninitialized
- enum field_status fixed_parent; //offset fixed according to its parent
- //-1:uninitialized, 0:unfixed, 1:fixed
- // void * base_address; //base address of the field ????
-
- guint field_size; // //>0: size of the field,
- // //0 : uncertain
- // //-1: uninitialize
- enum field_status fixed_size;
-
- /* for sequence */
- gint sequ_number_size; //the size of unsigned used to save the
- //number of elements in the sequence
-
- gint element_size; //the element size of the sequence
- //int field_fixed; //0: field has string or sequence
- //1: field has no string or sequenc
- //-1: uninitialize
-
- struct _LttField * parent;
- struct _LttField ** child; //for array, sequence, struct and union:
- //list of fields, it may have only one
- //field if the element is not a struct or
- //union
- unsigned current_element; //which element is currently processed
- // Used for sequences and arrays.
+ GQuark name;
+ gchar *description;
+ LttType field_type; //field type
+
+ off_t offset_root; //offset from the root
+ enum field_status fixed_root; //offset fixed according to the root
+
+ guint field_size; // size of the field
+ // Only if field type size is set to 0
+ // (it's variable), then the field_size should be
+ // dynamically calculated while reading the trace
+ // and put here. Otherwise, the field_size always
+ // equels the type size.
+ off_t array_offset; // offset of the beginning of the array (for array
+ // and sequences)
+ GArray * dynamic_offsets; // array of offsets calculated dynamically at
+ // each event for sequences and arrays that
+ // contain variable length fields.
};
-
struct _LttFacility{
LttTrace *trace;
- //gchar * name; //facility name
GQuark name;
guint32 checksum; //checksum of the facility
guint32 id; //id of the facility
- guint32 pointer_size;
+ guint32 int_size;
guint32 long_size;
+ guint32 pointer_size;
guint32 size_t_size;
guint32 alignment;
-
- //LttEventType ** events; //array of event types
- //unsigned int event_number; //number of events in the facility
- //LttType ** named_types;
- //unsigned int named_types_number;
-
GArray *events;
GData *events_by_name;
- // GArray *named_types;
- //GData *named_types_by_name;
- GData *named_types;
+ // not necessary in LTTV GData *named_types;
unsigned char exists; /* 0 does not exist, 1 exists */
};
int fd; //file descriptor
off_t file_size; //file size
//unsigned block_size; //block_size
- unsigned int num_blocks; //number of blocks in the file
+ guint num_blocks; //number of blocks in the file
gboolean reverse_bo; //must we reverse byte order ?
gboolean float_word_order; //what is the byte order of floats ?
+ size_t has_alignment; //alignment of events in the tracefile.
+ // 0 or the architecture size in bytes.
size_t buffer_header_size;
guint8 ltt_minor_version;
guint8 flight_recorder;
guint8 has_heartbeat;
- guint8 has_alignment;
guint8 has_tsc;
uint64_t start_freq;
uint64_t start_tsc;
//#define EVENT_HEADER_SIZE (TIMESTAMP_SIZE + EVENT_ID_SIZE)
+/* Calculate the offset needed to align the type.
+ * If has_alignment is 0, alignment is disactivated.
+ * else, the function returns the offset needed to
+ * align align_drift on the has_alignment value (should be
+ * the size of the architecture). */
+static inline unsigned int ltt_align(size_t align_drift,
+ size_t size_of_type,
+ size_t has_alignment)
+{
+ size_t alignment = min(has_alignment, size_of_type);
+
+ return ((alignment - align_drift) & (alignment-1));
+}
+
+off_t field_align(LttTracefile *tf, LttField *field, off_t offset);
+
+
#endif /* LTT_PRIVATE_H */
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