ltt/branches/poly/ltt/ltt-private.h

   1 /* This file is part of the Linux Trace Toolkit viewer
   2  * Copyright (C) 2003-2004 Xiangxiu Yang
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License Version 2 as
   6  * published by the Free Software Foundation;
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  16  * MA 02111-1307, USA.
  17  */
  18
  19 #ifndef LTT_PRIVATE_H
  20 #define LTT_PRIVATE_H
  21
  22 #include <glib.h>
  23 #include <sys/types.h>
  24 #include <ltt/ltt.h>
  25 #include <endian.h>
  26
  27
  28 #ifndef max
  29 #define max(a,b) ((a)>(b)?(a):(b))
  30 #endif
  31
  32
  33 #define LTT_MAGIC_NUMBER 0x00D6B7ED
  34 #define LTT_REV_MAGIC_NUMBER 0xEDB7D600
  35
  36 #define NSEC_PER_USEC 1000
  37
  38 #define LTT_PACKED_STRUCT __attribute__ ((packed))
  39
  40 /* Hardcoded facilities */
  41 #define LTT_FACILITY_CORE 0
  42
  43 /* Byte ordering */
  44 #define LTT_GET_BO(t) ((t)->reverse_bo)
  45
  46 #define LTT_HAS_FLOAT(t) ((t)->float_word_order!=0)
  47 #define LTT_GET_FLOAT_BO(t) \
  48   (((t)->float_word_order==__BYTE_ORDER)?0:1)
  49
  50
  51 /* Hardcoded core events */
  52 enum ltt_core_events {
  53     LTT_EVENT_FACILITY_LOAD,
  54     LTT_EVENT_FACILITY_UNLOAD,
  55     LTT_EVENT_HEARTBEAT,
  56     LTT_EVENT_STATE_DUMP_FACILITY_LOAD
  57 };
  58
  59
  60 #if 0
  61 /* enumeration definition */
  62
  63 typedef enum _BuildinEvent{
  64   TRACE_FACILITY_LOAD = 0,
  65   TRACE_BLOCK_START   = 17,
  66   TRACE_BLOCK_END     = 18,
  67   TRACE_TIME_HEARTBEAT= 19
  68 } BuildinEvent;
  69
  70
  71 /* structure definition */
  72
  73 typedef struct _FacilityLoad{
  74   gchar * name;
  75   LttChecksum checksum;
  76   guint32     base_code;
  77 } LTT_PACKED_STRUCT FacilityLoad;
  78
  79 typedef struct _BlockStart {
  80   LttTime       time;       //Time stamp of this block
  81   LttCycleCount cycle_count; //cycle count of the event
  82   guint32       block_id;    //block id
  83 } LTT_PACKED_STRUCT BlockStart;
  84
  85 typedef struct _BlockEnd {
  86   LttTime       time;       //Time stamp of this block
  87   LttCycleCount cycle_count; //cycle count of the event
  88   guint32       block_id;    //block id
  89 } LTT_PACKED_STRUCT BlockEnd;
  90 #endif //0
  91
  92
  93 typedef guint8 uint8_t;
  94 typedef guint16 uint16_t;
  95 typedef guint32 uint32_t;
  96 typedef guint64 uint64_t;
  97
  98 /* Hardcoded facility load event : this plus an preceding "name" string */
  99 struct LttFacilityLoad {
 100   guint32 checksum;
 101   guint32 id;
 102   guint32 long_size;
 103   guint32 pointer_size;
 104   guint32 size_t_size;
 105   guint32 alignment;
 106 } LTT_PACKED_STRUCT;
 107
 108 struct LttFacilityUnload {
 109   guint32 id;
 110 } LTT_PACKED_STRUCT;
 111
 112 struct LttStateDumpFacilityLoad {
 113   guint32 checksum;
 114   guint32 id;
 115   guint32 long_size;
 116   guint32 pointer_size;
 117   guint32 size_t_size;
 118   guint32 alignment;
 119 } LTT_PACKED_STRUCT;
 120
 121 typedef struct _TimeHeartbeat {
 122   LttTime       time;       //Time stamp of this block
 123   uint64_t cycle_count; //cycle count of the event
 124 } LTT_PACKED_STRUCT TimeHeartbeat;
 125
 126 struct ltt_event_header_hb {
 127   uint32_t      timestamp;
 128   unsigned char  facility_id;
 129   unsigned char event_id;
 130   uint16_t      event_size;
 131 } LTT_PACKED_STRUCT;
 132
 133 struct ltt_event_header_nohb {
 134   uint64_t      timestamp;
 135   unsigned char  facility_id;
 136   unsigned char event_id;
 137   uint16_t      event_size;
 138 } LTT_PACKED_STRUCT;
 139
 140 struct ltt_trace_header {
 141   uint32_t        magic_number;
 142   uint32_t        arch_type;
 143   uint32_t        arch_variant;
 144   uint8_t         arch_size;
 145   //uint32_t        system_type;
 146   uint8_t          major_version;
 147   uint8_t          minor_version;
 148   uint8_t          flight_recorder;
 149   uint8_t          has_heartbeat;
 150   uint8_t          has_alignment;  /* Event header alignment */
 151         uint8_t                                  has_tsc;
 152 } LTT_PACKED_STRUCT;
 153
 154
 155 struct ltt_block_start_header {
 156   struct {
 157     struct timeval          timestamp;
 158     uint64_t                cycle_count;
 159   } begin;
 160   struct {
 161     struct timeval          timestamp;
 162     uint64_t                cycle_count;
 163   } end;
 164   uint32_t                lost_size;  /* Size unused at the end of the buffer */
 165   uint32_t                buf_size;   /* The size of this sub-buffer */
 166   struct ltt_trace_header trace;
 167 } LTT_PACKED_STRUCT;
 168
 169
 170 struct _LttType{
 171   GQuark type_name;                //type name if it is a named type
 172   GQuark element_name;             //elements name of the struct
 173   gchar * fmt;
 174   unsigned int size;
 175   LttTypeEnum type_class;          //which type
 176   GQuark * enum_strings;            //for enum labels
 177   struct _LttType ** element_type; //for array, sequence and struct
 178   unsigned element_number;         //the number of elements
 179                                    //for enum, array, sequence and structure
 180 };
 181
 182 struct _LttEventType{
 183   GQuark name;
 184   gchar * description;
 185   guint index;              //id of the event type within the facility
 186   LttFacility * facility; //the facility that contains the event type
 187   LttField * root_field;  //root field
 188 };
 189
 190 /* Structure LttEvent and LttEventPosition must begin with the _exact_ same
 191  * fields in the exact same order. LttEventPosition is a parent of LttEvent. */
 192 struct _LttEvent{
 193
 194   /* Begin of LttEventPosition fields */
 195   LttTracefile  *tracefile;
 196   unsigned int  block;
 197   unsigned int  offset;
 198
 199   /* Timekeeping */
 200   uint64_t                tsc;       /* Current timestamp counter */
 201
 202   /* End of LttEventPosition fields */
 203
 204         union {                                                                                 /* choice by trace has_tsc */
 205           guint32  timestamp;                           /* truncated timestamp */
 206         LttTime  delta;
 207         } time;
 208
 209   unsigned char facility_id;    /* facility ID are never reused. */
 210   unsigned char event_id;
 211
 212   LttTime event_time;
 213
 214   void * data;               //event data
 215   guint  data_size;
 216   guint  event_size;         //event_size field of the header :
 217                              //used to verify data_size from facility.
 218
 219   int      count;                    //the number of overflow of cycle count
 220   gint64 overflow_nsec;              //precalculated nsec for overflows
 221 };
 222
 223 struct _LttEventPosition{
 224   LttTracefile  *tracefile;
 225   unsigned int  block;
 226   unsigned int  offset;
 227
 228   /* Timekeeping */
 229   uint64_t                tsc;       /* Current timestamp counter */
 230 };
 231
 232
 233 enum field_status { FIELD_UNKNOWN, FIELD_VARIABLE, FIELD_FIXED };
 234
 235 struct _LttField{
 236   //guint field_pos;           //field position within its parent
 237   LttType * field_type;      //field type, if it is root field
 238                              //then it must be struct type
 239
 240   off_t offset_root;         //offset from the root, -1:uninitialized
 241   enum field_status fixed_root;          //offset fixed according to the root
 242                              //-1:uninitialized, 0:unfixed, 1:fixed
 243   off_t offset_parent;       //offset from the parent,-1:uninitialized
 244   enum field_status fixed_parent;        //offset fixed according to its parent
 245                              //-1:uninitialized, 0:unfixed, 1:fixed
 246   //  void * base_address;       //base address of the field  ????
 247
 248   guint field_size;     //      //>0: size of the field,
 249                           //   //0 : uncertain
 250                            //  //-1: uninitialize
 251   enum field_status fixed_size;
 252
 253   /* for sequence */
 254   gint sequ_number_size;      //the size of unsigned used to save the
 255                              //number of elements in the sequence
 256
 257   gint element_size;          //the element size of the sequence
 258   //int field_fixed;           //0: field has string or sequence
 259                              //1: field has no string or sequenc
 260                              //-1: uninitialize
 261
 262   struct _LttField * parent;
 263   struct _LttField ** child; //for array, sequence, struct and union:
 264                              //list of fields, it may have only one
 265                              //field if the element is not a struct or
 266                              //union
 267   unsigned current_element;  //which element is currently processed
 268                              // Used for sequences and arrays.
 269 };
 270
 271
 272 struct _LttFacility{
 273   LttTrace  *trace;
 274   //gchar * name;               //facility name
 275   GQuark name;
 276   guint32 checksum;      //checksum of the facility
 277   guint32  id;          //id of the facility
 278
 279   guint32 pointer_size;
 280   guint32 long_size;
 281   guint32 size_t_size;
 282   guint32 alignment;
 283
 284
 285   //LttEventType ** events;    //array of event types
 286   //unsigned int event_number;          //number of events in the facility
 287   //LttType ** named_types;
 288   //unsigned int named_types_number;
 289
 290   GArray *events;
 291   GData *events_by_name;
 292  // GArray *named_types;
 293   //GData *named_types_by_name;
 294   GData *named_types;
 295
 296   unsigned char exists; /* 0 does not exist, 1 exists */
 297 };
 298
 299 typedef struct _LttBuffer {
 300   void * head;
 301   unsigned int index;
 302
 303   struct {
 304     LttTime                 timestamp;
 305     uint64_t                cycle_count;
 306   } begin;
 307   struct {
 308     LttTime                 timestamp;
 309     uint64_t                cycle_count;
 310   } end;
 311   uint32_t                lost_size; /* Size unused at the end of the buffer */
 312
 313   /* Timekeeping */
 314   uint64_t                tsc;       /* Current timestamp counter */
 315   double                  nsecs_per_cycle;
 316 } LttBuffer;
 317
 318 struct _LttTracefile{
 319   gboolean cpu_online;               //is the cpu online ?
 320   GQuark long_name;                  //tracefile complete filename
 321   GQuark name;                       //tracefile name
 322   guint cpu_num;                     //cpu number of the tracefile
 323   LttTrace * trace;                  //trace containing the tracefile
 324   int fd;                            //file descriptor
 325   off_t file_size;                   //file size
 326   //unsigned block_size;               //block_size
 327   unsigned int num_blocks;           //number of blocks in the file
 328   gboolean  reverse_bo;              //must we reverse byte order ?
 329   gboolean  float_word_order;        //what is the byte order of floats ?
 330
 331         /* Current event */
 332   LttEvent event;                    //Event currently accessible in the trace
 333
 334         /* Current block */
 335   LttBuffer buffer;                  //current buffer
 336   guint32 buf_size;                  /* The size of blocks */
 337
 338         /* Time flow */
 339   //unsigned int      count;           //the number of overflow of cycle count
 340   //double nsec_per_cycle;             //Nsec per cycle
 341   //TimeHeartbeat * last_heartbeat;    //last heartbeat
 342
 343   //LttCycleCount cycles_per_nsec_reciprocal; // Optimisation for speed
 344   //void * last_event_pos;
 345
 346   //LttTime prev_block_end_time;       //the end time of previous block
 347   //LttTime prev_event_time;           //the time of the previous event
 348   //LttCycleCount pre_cycle_count;     //previous cycle count of the event
 349 };
 350
 351 struct _LttTrace{
 352   GQuark pathname;                          //the pathname of the trace
 353   //LttSystemDescription * system_description;//system description
 354
 355   GArray *facilities_by_num;            /* fac_id as index in array */
 356   GData *facilities_by_name;            /* fac name (GQuark) as index */
 357                                         /* Points to array of fac_id of all the
 358                                         * facilities that has this name. */
 359   guint     num_cpu;
 360
 361   guint32   arch_type;
 362   guint32   arch_variant;
 363   guint8    arch_size;
 364   guint8    ltt_major_version;
 365   guint8    ltt_minor_version;
 366   guint8    flight_recorder;
 367   guint8    has_heartbeat;
 368   guint8    has_alignment;
 369         guint8          has_tsc;
 370
 371   GData     *tracefiles;                    //tracefiles groups
 372 };
 373
 374 /* The characteristics of the system on which the trace was obtained
 375    is described in a LttSystemDescription structure. */
 376
 377 struct _LttSystemDescription {
 378   gchar *description;
 379   gchar *node_name;
 380   gchar *domain_name;
 381   unsigned nb_cpu;
 382   LttArchSize size;
 383   LttArchEndian endian;
 384   gchar *kernel_name;
 385   gchar *kernel_release;
 386   gchar *kernel_version;
 387   gchar *machine;
 388   gchar *processor;
 389   gchar *hardware_platform;
 390   gchar *operating_system;
 391   LttTime trace_start;
 392   LttTime trace_end;
 393 };
 394
 395 /*****************************************************************************
 396  macro for size of some data types
 397  *****************************************************************************/
 398 // alignment -> dynamic!
 399
 400 //#define TIMESTAMP_SIZE    sizeof(guint32)
 401 //#define EVENT_ID_SIZE     sizeof(guint16)
 402 //#define EVENT_HEADER_SIZE (TIMESTAMP_SIZE + EVENT_ID_SIZE)
 403
 404
 405 #endif /* LTT_PRIVATE_H */