#include <sys/types.h>
#include <ltt/ltt.h>
+#define LTT_MAGIC_NUMBER 0x00D6B7ED
+#define LTT_REV_MAGIC_NUMBER 0xEDB7D600
+
+#define NSEC_PER_USEC 1000
+
#define LTT_PACKED_STRUCT __attribute__ ((packed))
+#define NUM_FACILITIES 256
+
+/* Hardcoded facilities */
+#define LTT_FACILITY_CORE 0
+
+/* Hardcoded core events */
+enum ltt_core_events {
+ LTT_EVENT_FACILITY_LOAD,
+ LTT_EVENT_FACILITY_UNLOAD,
+ LTT_EVENT_STATE_DUMP_FACILITY_LOAD,
+ LTT_EVENT_HEARTBEAT
+};
+
+
+#if 0
/* enumeration definition */
typedef enum _BuildinEvent{
} LTT_PACKED_STRUCT FacilityLoad;
typedef struct _BlockStart {
- LttTime time; //Time stamp of this block
+ LttTime time; //Time stamp of this block
LttCycleCount cycle_count; //cycle count of the event
guint32 block_id; //block id
} LTT_PACKED_STRUCT BlockStart;
typedef struct _BlockEnd {
- LttTime time; //Time stamp of this block
+ LttTime time; //Time stamp of this block
LttCycleCount cycle_count; //cycle count of the event
guint32 block_id; //block id
} LTT_PACKED_STRUCT BlockEnd;
+#endif //0
+
+
+typedef guint8 uint8_t;
+typedef guint16 uint16_t;
+typedef guint32 uint32_t;
+typedef guint64 uint64_t;
+
+/* Hardcoded facility load event : this plus an following "name" string */
+struct LttFacilityLoad {
+ guint32 checksum;
+ guint32 id;
+ guint32 long_size;
+ guint32 pointer_size;
+ guint32 size_t_size;
+ guint32 alignment;
+};
+
+struct LttFacilityUnload {
+ guint32 id;
+};
+
+struct LttStateDumpFacilityLoad {
+ guint32 checksum;
+ guint32 id;
+ guint32 long_size;
+ guint32 pointer_size;
+ guint32 size_t_size;
+ guint32 alignment;
+};
+
+
typedef struct _TimeHeartbeat {
- LttTime time; //Time stamp of this block
- LttCycleCount cycle_count; //cycle count of the event
+ LttTime time; //Time stamp of this block
+ uint64_t cycle_count; //cycle count of the event
} LTT_PACKED_STRUCT TimeHeartbeat;
+struct ltt_event_header_hb {
+ uint32_t timestamp;
+ unsigned char facility_id;
+ unsigned char event_id;
+ uint16_t event_size;
+} __attribute((aligned(8)));
+
+struct ltt_event_header_nohb {
+ uint64_t timestamp;
+ unsigned char facility_id;
+ unsigned char event_id;
+ uint16_t event_size;
+} __attribute((aligned(8)));
+
+struct ltt_trace_header {
+ uint32_t magic_number;
+ uint32_t arch_type;
+ uint32_t arch_variant;
+ uint8_t arch_size;
+ //uint32_t system_type;
+ uint8_t major_version;
+ uint8_t minor_version;
+ uint8_t flight_recorder;
+ uint8_t has_heartbeat;
+ uint8_t has_alignment; /* Event header alignment */
+ uint8_t has_tsc;
+} __attribute((aligned(8)));
+
+
+struct ltt_block_start_header {
+ struct {
+ struct timeval timestamp;
+ uint64_t cycle_count;
+ } begin;
+ struct {
+ struct timeval timestamp;
+ uint64_t cycle_count;
+ } end;
+ uint32_t lost_size; /* Size unused at the end of the buffer */
+ uint32_t buf_size; /* The size of this sub-buffer */
+ struct ltt_trace_header trace;
+} __attribute((aligned(8)));
+
struct _LttType{
- gchar * type_name; //type name if it is a named type
- gchar * element_name; //elements name of the struct
+ GQuark type_name; //type name if it is a named type
+ GQuark element_name; //elements name of the struct
gchar * fmt;
unsigned int size;
LttTypeEnum type_class; //which type
- gchar ** enum_strings; //for enum labels
+ 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
};
struct _LttEventType{
- gchar * name;
+ GQuark name;
gchar * description;
- int 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
- unsigned int latest_block; //the latest block using the event type
- unsigned int latest_event; //the latest event using the event type
};
+/* Structure LttEvent and LttEventPosition must begin with the _exact_ same
+ * fields in the exact same order. LttEventPosition is a parent of LttEvent. */
struct _LttEvent{
- guint16 event_id;
- guint32 time_delta;
+
+ /* Begin of LttEventPosition fields */
+ LttTracefile *tracefile;
+ unsigned int block;
+ void *offset;
+
+ /* Timekeeping */
+ uint64_t tsc; /* Current timestamp counter */
+
+ /* End of LttEventPosition fields */
+
+ union { /* choice by trace has_tsc */
+ guint32 timestamp; /* truncated timestamp */
+ LttTime delta;
+ } time;
+
+ unsigned char facility_id; /* facility ID are never reused. */
+ unsigned char event_id;
+
LttTime event_time;
- LttCycleCount event_cycle_count;
- LttTracefile * tracefile;
+
void * data; //event data
- unsigned int which_block; //the current block of the event
- unsigned int which_event; //the position of the event
- /* This is a workaround for fast position seek */
- void * last_event_pos;
-
- LttTime prev_block_end_time; //the end time of previous block
- LttTime prev_event_time; //the time of the previous event
- LttCycleCount pre_cycle_count; //previous cycle count of the event
+
int count; //the number of overflow of cycle count
gint64 overflow_nsec; //precalculated nsec for overflows
- TimeHeartbeat * last_heartbeat; //last heartbeat
+};
- /* end of workaround */
+struct _LttEventPosition{
+ LttTracefile *tracefile;
+ unsigned int block;
+ void *offset;
+
+ /* Timekeeping */
+ uint64_t tsc; /* Current timestamp counter */
};
+enum field_status { FIELD_UNKNOWN, FIELD_VARIABLE, FIELD_FIXED };
+
struct _LttField{
- unsigned field_pos; //field position within its parent
+ //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
- short fixed_root; //offset fixed according to the root
+ 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
- short fixed_parent; //offset fixed according to its parent
+ 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 ????
- int field_size; //>0: size of the field,
- //0 : uncertain
- //-1: uninitialize
- int sequ_number_size; //the size of unsigned used to save the
+ 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
- int element_size; //the element size of the sequence
- int field_fixed; //0: field has string or 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 and struct:
+ 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
+ //field if the element is not a struct or
+ //union
unsigned current_element; //which element is currently processed
+ // Used for sequences and arrays.
};
struct _LttFacility{
- gchar * name; //facility name
- unsigned int event_number; //number of events in the facility
- LttChecksum checksum; //checksum of the facility
- guint32 base_id; //base id of the facility
- LttEventType ** events; //array of event types
- LttType ** named_types;
- unsigned int named_types_number;
+ LttTrace *trace;
+ //gchar * name; //facility name
+ GQuark name;
+ guint32 checksum; //checksum of the facility
+ guint32 id; //id of the facility
+
+ 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;
+
+ unsigned char exists; /* 0 does not exist, 1 exists */
};
+typedef struct _LttBuffer {
+ void * head;
+ unsigned int index;
+
+ struct {
+ LttTime timestamp;
+ uint64_t cycle_count;
+ } begin;
+ struct {
+ LttTime timestamp;
+ uint64_t cycle_count;
+ } end;
+ uint32_t lost_size; /* Size unused at the end of the buffer */
+
+ /* Timekeeping */
+ uint64_t tsc; /* Current timestamp counter */
+ double nsecs_per_cycle;
+} LttBuffer;
+
struct _LttTracefile{
- gchar * name; //tracefile name
+ gboolean cpu_online; //is the cpu online ?
+ GQuark name; //tracefile name
+ guint cpu_num; //cpu number of the tracefile
LttTrace * trace; //trace containing the tracefile
int fd; //file descriptor
off_t file_size; //file size
unsigned block_size; //block_size
- unsigned int block_number; //number of blocks in the file
- unsigned int which_block; //which block the current block is
- unsigned int which_event; //which event of the current block
- //is currently processed
- LttTime current_event_time; //time of the current event
- BlockStart * a_block_start; //block start of the block- trace endian
- BlockEnd * a_block_end; //block end of the block - trace endian
- TimeHeartbeat * last_heartbeat; //last heartbeat
- void * cur_event_pos; //the position of the current event
- void * buffer; //the buffer containing the block
- double nsec_per_cycle; //Nsec per cycle
- guint64 one_overflow_nsec; //nsec for one overflow
- gint64 overflow_nsec; //precalculated nsec for overflows
- //can be negative to include value
- //of block start cycle count.
- //incremented at each overflow while
- //reading.
+ unsigned int num_blocks; //number of blocks in the file
+ gboolean reverse_bo; //must we reverse byte order ?
+
+ /* Current event */
+ LttEvent event; //Event currently accessible in the trace
+
+ /* Current block */
+ LttBuffer buffer; //current buffer
+ guint32 buf_size; /* The size of blocks */
+
+ /* Time flow */
+ //unsigned int count; //the number of overflow of cycle count
+ //double nsec_per_cycle; //Nsec per cycle
+ //TimeHeartbeat * last_heartbeat; //last heartbeat
+
//LttCycleCount cycles_per_nsec_reciprocal; // Optimisation for speed
- unsigned cur_heart_beat_number; //current number of heart beat in the buf
- LttCycleCount cur_cycle_count; //current cycle count of the event
- void * last_event_pos;
-
- LttTime prev_block_end_time; //the end time of previous block
- LttTime prev_event_time; //the time of the previous event
- LttCycleCount pre_cycle_count; //previous cycle count of the event
- unsigned int count; //the number of overflow of cycle count
-};
+ //void * last_event_pos;
-struct _LttTrace{
- gchar * pathname; //the pathname of the trace
- guint facility_number; //the number of facilities
- guint control_tracefile_number; //the number of control files
- guint per_cpu_tracefile_number; //the number of per cpu files
- LttSystemDescription * system_description;//system description
-
- GPtrArray *control_tracefiles; //array of control tracefiles
- GPtrArray *per_cpu_tracefiles; //array of per cpu tracefiles
- GPtrArray *facilities; //array of facilities
- gboolean reverse_byte_order; //must we reverse BO ?
+ //LttTime prev_block_end_time; //the end time of previous block
+ //LttTime prev_event_time; //the time of the previous event
+ //LttCycleCount pre_cycle_count; //previous cycle count of the event
};
-struct _LttEventPosition{
- unsigned block_num; //block which contains the event
- unsigned event_num; //event index in the block
- unsigned event_offset; //event position in the block
- LttTime event_time; //the time of the event
- LttCycleCount event_cycle_count; //the cycle count of the event
- unsigned heart_beat_number; //current number of heart beats
- LttTracefile *tf; //tracefile containing the event
- gboolean old_position; //flag to show if it is the position
- //being remembered
- /* This is a workaround for fast position seek */
- void * last_event_pos;
-
- LttTime prev_block_end_time; //the end time of previous block
- LttTime prev_event_time; //the time of the previous event
- LttCycleCount pre_cycle_count; //previous cycle count of the event
- int count; //the number of overflow of cycle count
- gint64 overflow_nsec; //precalculated nsec for overflows
- TimeHeartbeat * last_heartbeat; //last heartbeat
- /* end of workaround */
+struct _LttTrace{
+ GQuark pathname; //the pathname of the trace
+ //LttSystemDescription * system_description;//system description
+
+ GArray *facilities_by_num; /* fac_id as index in array */
+ GData *facilities_by_name; /* fac name (GQuark) as index */
+ /* Points to array of fac_id of all the
+ * facilities that has this name. */
+
+ guint8 ltt_major_version;
+ guint8 ltt_minor_version;
+ guint8 flight_recorder;
+ guint8 has_heartbeat;
+ // guint8 alignment;
+ guint8 has_tsc;
+
+ GData *tracefiles; //tracefiles groups
};
/* The characteristics of the system on which the trace was obtained
gchar *processor;
gchar *hardware_platform;
gchar *operating_system;
- unsigned ltt_major_version;
- unsigned ltt_minor_version;
- unsigned ltt_block_size;
LttTime trace_start;
LttTime trace_end;
};
/*****************************************************************************
macro for size of some data types
*****************************************************************************/
-#define EVENT_ID_SIZE sizeof(guint16)
-#define TIME_DELTA_SIZE sizeof(guint32)
-#define EVENT_HEADER_SIZE (EVENT_ID_SIZE + TIME_DELTA_SIZE)
+// alignment -> dynamic!
+
+//#define TIMESTAMP_SIZE sizeof(guint32)
+//#define EVENT_ID_SIZE sizeof(guint16)
+//#define EVENT_HEADER_SIZE (TIMESTAMP_SIZE + EVENT_ID_SIZE)
+
+#define LTT_GET_BO(t) ((t)->reverse_bo)
#endif /* LTT_PRIVATE_H */
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