ltt/branches/poly/ltt/convert/convert.c

   1 #include <stdio.h>
   2 #include <unistd.h>
   3 #include <fcntl.h>
   4 #include <sys/stat.h>
   5 #include <sys/types.h>
   6 #include <errno.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9
  10 #include <glib.h>
  11 #include "LTTTypes.h"
  12 #include "LinuxEvents.h"
  13
  14 #define TRACE_HEARTBEAT_ID  19
  15 #define PROCESS_FORK_ID     20
  16 #define PROCESS_EXIT_ID     21
  17
  18 #define INFO_ENTRY          9
  19 #define OVERFLOW_FIGURE     0x100000000ULL
  20
  21 typedef struct _new_process
  22 {
  23   uint32_t  event_data1;     /* Data associated with event */
  24   uint32_t  event_data2;
  25 } LTT_PACKED_STRUCT new_process;
  26
  27 #define write_to_buffer(DEST, SRC, SIZE) \
  28 do\
  29 {\
  30    memcpy(DEST, SRC, SIZE);\
  31    DEST += SIZE;\
  32 } while(0);
  33
  34 int readFile(int fd, void * buf, size_t size, char * mesg)
  35 {
  36    ssize_t nbBytes = read(fd, buf, size);
  37
  38    if(nbBytes < 0) {
  39      perror("Error in readFile : ");
  40      exit(1);
  41    } else if((size_t)nbBytes != size) {
  42      printf("%s\n",mesg);
  43      exit(1);
  44    }
  45    return 0;
  46 }
  47
  48 void getDataEndianType(char * size, char * endian)
  49 {
  50   int i = 1;
  51   char c = (char) i;
  52   int sizeInt=sizeof(int), sizeLong=sizeof(long), sizePointer=sizeof(void *);
  53
  54   if(c == 1) strcpy(endian,"LITTLE_ENDIAN");
  55   else strcpy(endian, "BIG_ENDIAN");
  56
  57   if(sizeInt == 2 && sizeLong == 4 && sizePointer == 4)
  58     strcpy(size,"LP32");
  59   else if(sizeInt == 4 && sizeLong == 4 && sizePointer == 4)
  60     strcpy(size,"ILP32");
  61   else if(sizeInt == 4 && sizeLong == 8 && sizePointer == 8)
  62     strcpy(size,"LP64");
  63   else if(sizeInt == 8 && sizeLong == 8 && sizePointer == 8)
  64     strcpy(size,"ILP64");
  65   else strcpy(size,"UNKNOWN");
  66 }
  67
  68 #define BUFFER_SIZE 80
  69
  70 typedef struct _buffer_start{
  71   uint32_t seconds;
  72   uint32_t nanoseconds;
  73   uint64_t cycle_count;
  74   uint32_t block_id;
  75 } __attribute__ ((packed)) buffer_start;
  76
  77 typedef struct _heartbeat{
  78   uint32_t seconds;
  79   uint32_t nanoseconds;
  80   uint64_t cycle_count;
  81 } __attribute__ ((packed)) heartbeat;
  82
  83
  84 int main(int argc, char ** argv){
  85
  86   int fd, fdCpu;
  87   FILE * fp;
  88   int  fdFac, fdIntr, fdProc;
  89   char arch_size[BUFFER_SIZE];
  90   char endian[BUFFER_SIZE];
  91   char node_name[BUFFER_SIZE];
  92   char domainname[BUFFER_SIZE];
  93   char kernel_name[BUFFER_SIZE];
  94   char kernel_release[BUFFER_SIZE];
  95   char kernel_version[BUFFER_SIZE];
  96   char machine[BUFFER_SIZE];
  97   char processor[BUFFER_SIZE];
  98   char hardware_platform[BUFFER_SIZE];
  99   char operating_system[BUFFER_SIZE];
 100   int  cpu;
 101   int  ltt_block_size;
 102   int  ltt_major_version;
 103   int  ltt_minor_version;
 104   int  ltt_log_cpu;
 105   char buf[BUFFER_SIZE];
 106   int i, k;
 107
 108   uint8_t cpu_id;
 109
 110   char foo[4*BUFFER_SIZE];
 111   char foo_eventdefs[4*BUFFER_SIZE];
 112   char foo_control[4*BUFFER_SIZE];
 113   char foo_cpu[4*BUFFER_SIZE];
 114   char foo_info[4*BUFFER_SIZE];
 115
 116   char foo_control_facilities[4*BUFFER_SIZE];
 117   char foo_control_processes[4*BUFFER_SIZE];
 118   char foo_control_interrupts[4*BUFFER_SIZE];
 119   char foo_info_system[4*BUFFER_SIZE];
 120
 121   struct stat      lTDFStat;
 122   off_t file_size;
 123   int block_number, block_size;
 124   char * buffer, *buf_out, cpuStr[4*BUFFER_SIZE];
 125   char * buf_fac, * buf_intr, * buf_proc;
 126   void * write_pos, *write_pos_fac, * write_pos_intr, *write_pos_proc;
 127   trace_start *tStart;
 128   trace_buffer_start *tBufStart;
 129   trace_buffer_end *tBufEnd;
 130   trace_file_system * tFileSys;
 131   uint16_t newId, startId, tmpId;
 132   uint8_t  evId;
 133   uint32_t time_delta, startTimeDelta;
 134   void * cur_pos, *end_pos;
 135   buffer_start start, start_proc, start_intr;
 136   buffer_start end, end_proc, end_intr;
 137   heartbeat beat;
 138   int beat_count = 0;
 139   uint32_t size_lost;
 140   int reserve_size = sizeof(buffer_start) + sizeof(uint16_t) + 2*sizeof(uint32_t);//lost_size and buffer_end event
 141   int nb_para;
 142
 143   new_process process;
 144
 145   if(argc < 4){
 146     printf("Usage : ./convert processfile_name number_of_cpu tracefile1 tracefile2 ... trace_creation_directory\n");
 147                 printf("For more details, see README.\n");
 148     exit(1);
 149   }
 150
 151   cpu = atoi(argv[2]);
 152   printf("cpu number = %d\n", cpu);
 153   nb_para = 3 + cpu;
 154
 155   if(argc != nb_para && argc != nb_para+1){
 156     printf("need trace files and cpu number or root directory for the new tracefile\n");
 157     exit(1);
 158   }
 159
 160   if(argc == nb_para){
 161     strcpy(foo, "foo");
 162     strcpy(foo_eventdefs, "foo/eventdefs");
 163     strcpy(foo_control, "foo/control");
 164     strcpy(foo_cpu, "foo/cpu");
 165     strcpy(foo_info, "foo/info");
 166   }else{
 167     strcpy(foo, argv[nb_para]);
 168     strcpy(foo_eventdefs, argv[nb_para]);
 169     strcat(foo_eventdefs,"/eventdefs");
 170     strcpy(foo_control, argv[nb_para]);
 171     strcat(foo_control,"/control");
 172     strcpy(foo_cpu, argv[nb_para]);
 173     strcat(foo_cpu,"/cpu");
 174     strcpy(foo_info, argv[nb_para]);
 175     strcat(foo_info,"/info");
 176   }
 177   strcpy(foo_control_facilities, foo_control);
 178   strcat(foo_control_facilities,"/facilities");
 179   strcpy(foo_control_processes, foo_control);
 180   strcat(foo_control_processes, "/processes");
 181   strcpy(foo_control_interrupts, foo_control);
 182   strcat(foo_control_interrupts, "/interrupts");
 183   strcpy(foo_info_system, foo_info);
 184   strcat(foo_info_system, "/system.xml");
 185
 186
 187   getDataEndianType(arch_size, endian);
 188   printf("Arch_size: %s,  Endian: %s\n", arch_size, endian);
 189
 190   fp = fopen("sysInfo.out","r");
 191   if(!fp){
 192     g_error("Unable to open file sysInfo.out\n");
 193   }
 194
 195   for(i=0;i<INFO_ENTRY;i++){
 196     if(!fgets(buf,BUFFER_SIZE-1,fp))
 197       g_error("The format of sysInfo.out is not right\n");
 198     if(strncmp(buf,"node_name=",10)==0){
 199       strcpy(node_name,&buf[10]);
 200       node_name[strlen(node_name)-1] = '\0';
 201     }else if(strncmp(buf,"domainname=",11)==0){
 202       strcpy(domainname,&buf[11]);
 203       domainname[strlen(domainname)-1] = '\0';
 204     }else if(strncmp(buf,"kernel_name=",12)==0){
 205       strcpy(kernel_name,&buf[12]);
 206       kernel_name[strlen(kernel_name)-1] = '\0';
 207     }else if(strncmp(buf,"kernel_release=",15)==0){
 208       strcpy(kernel_release,&buf[15]);
 209       kernel_release[strlen(kernel_release)-1] = '\0';
 210     }else if(strncmp(buf,"kernel_version=",15)==0){
 211       strcpy(kernel_version,&buf[15]);
 212       kernel_version[strlen(kernel_version)-1] = '\0';
 213     }else if(strncmp(buf,"machine=",8)==0){
 214       strcpy(machine,&buf[8]);
 215       machine[strlen(machine)-1] = '\0';
 216     }else if(strncmp(buf,"processor=",10)==0){
 217       strcpy(processor,&buf[10]);
 218       processor[strlen(processor)-1] = '\0';
 219     }else if(strncmp(buf,"hardware_platform=",18)==0){
 220       strcpy(hardware_platform,&buf[18]);
 221       hardware_platform[strlen(hardware_platform)-1] = '\0';
 222     }else if(strncmp(buf,"operating_system=",17)==0){
 223       strcpy(operating_system,&buf[17]);
 224       operating_system[strlen(operating_system)-1] = '\0';
 225     }
 226   }
 227   fclose(fp);
 228
 229   if(mkdir(foo, S_IFDIR | S_IRWXU | S_IRGRP |  S_IROTH))
 230     g_error("can not make %s directory", foo);
 231   if(mkdir(foo_info, S_IFDIR | S_IRWXU | S_IRGRP |  S_IROTH))
 232     g_error("can not make %s directory", foo_info);
 233   if(mkdir(foo_cpu, S_IFDIR | S_IRWXU | S_IRGRP |  S_IROTH))
 234     g_error("can not make %s directory", foo_cpu);
 235   if(mkdir(foo_control, S_IFDIR | S_IRWXU | S_IRGRP |  S_IROTH))
 236     g_error("can not make %s directory", foo_control);
 237   if(mkdir(foo_eventdefs, S_IFDIR | S_IRWXU | S_IRGRP |  S_IROTH))
 238     g_error("can not make %s directory", foo_eventdefs);
 239
 240   fp = fopen(foo_info_system,"w");
 241   if(!fp){
 242     g_error("Unable to open file system.xml\n");
 243   }
 244
 245   fdFac = open(foo_control_facilities,O_CREAT | O_RDWR | O_TRUNC,S_IRUSR |S_IWUSR | S_IRGRP | S_IROTH);
 246   if(fdFac < 0){
 247     g_error("Unable to open file facilities\n");
 248   }
 249   fdIntr = open(foo_control_interrupts,O_CREAT | O_RDWR | O_TRUNC,S_IRUSR |S_IWUSR | S_IRGRP | S_IROTH);
 250   if(fdIntr<0){
 251     g_error("Unable to open file interrupts\n");
 252   }
 253   fdProc = open(foo_control_processes,O_CREAT | O_RDWR | O_TRUNC,S_IRUSR |S_IWUSR | S_IRGRP | S_IROTH);
 254   if(fdProc<0){
 255     g_error("Unable to open file process\n");
 256   }
 257
 258
 259   for(k=0;k<cpu;k++){
 260     fd = open(argv[nb_para-cpu+k], O_RDONLY, 0);
 261     if(fd < 0){
 262       g_error("Unable to open input data file %s\n", argv[nb_para-cpu+k]);
 263     }
 264
 265     if(fstat(fd, &lTDFStat) < 0){
 266       g_error("Unable to get the status of the input data file\n");
 267     }
 268     file_size = lTDFStat.st_size;
 269
 270     buffer = g_new(char, 4000);
 271     readFile(fd,(void*)buffer, 3500, "Unable to read block header");
 272
 273     cur_pos= buffer;
 274     evId = *(uint8_t *)cur_pos;
 275     cur_pos += sizeof(uint8_t);
 276     newId = evId;
 277     time_delta = *(uint32_t*)cur_pos;
 278     cur_pos += sizeof(uint32_t);
 279     tBufStart = (trace_buffer_start*)cur_pos;
 280     cur_pos += sizeof(trace_buffer_start);
 281     cur_pos += sizeof(uint16_t); //Skip event size
 282
 283     evId = *(uint8_t *)cur_pos;
 284     cur_pos += sizeof(uint8_t);
 285     cur_pos += sizeof(uint32_t);
 286     tStart = (trace_start*)cur_pos;
 287
 288     startId = newId;
 289     startTimeDelta = time_delta;
 290     start.seconds = tBufStart->Time.tv_sec;
 291     start.nanoseconds = tBufStart->Time.tv_usec;
 292     start.cycle_count = tBufStart->TSC;
 293     start.block_id = tBufStart->ID;
 294     end.block_id = start.block_id;
 295
 296     ltt_major_version = tStart->MajorVersion;
 297     ltt_minor_version = tStart->MinorVersion;
 298     ltt_block_size    = tStart->BufferSize;
 299     ltt_log_cpu       = tStart->LogCPUID;
 300
 301     block_size = ltt_block_size;
 302     block_number = file_size/block_size;
 303
 304     g_free(buffer);
 305     buffer         = g_new(char, block_size);
 306     buf_fac        = g_new(char, block_size);
 307     write_pos_fac  = buf_fac;
 308     buf_intr       = g_new(char, block_size);
 309     write_pos_intr = buf_intr;
 310     buf_proc       = g_new(char, block_size);
 311     write_pos_proc = buf_proc;
 312
 313     buf_out = g_new(char, block_size);
 314     write_pos = buf_out;
 315     sprintf(cpuStr,"%s/%d",foo_cpu,k);
 316     fdCpu = open(cpuStr, O_CREAT | O_RDWR | O_TRUNC,S_IRUSR |S_IWUSR | S_IRGRP | S_IROTH); //for cpu k
 317     if(fdCpu < 0)  g_error("Unable to open  cpu file %d\n", k);
 318     lseek(fd,0,SEEK_SET);
 319
 320     for(i=0;i<block_number;i++){
 321       int event_count = 0;
 322       beat_count = 0;
 323
 324       memset((void*)buf_out, 0, block_size);
 325       write_pos = buf_out;
 326       memset((void*)buf_intr, 0, block_size);
 327       memset((void*)buf_fac, 0, block_size);
 328       memset((void*)buf_proc, 0, block_size);
 329       write_pos_intr = buf_intr;
 330       write_pos_fac = buf_fac;
 331       write_pos_proc = buf_proc;
 332
 333       memset((void*)buffer,0,block_size);
 334       readFile(fd,(void*)buffer, block_size, "Unable to read block header");
 335
 336       cur_pos= buffer;
 337       evId = *(uint8_t *)cur_pos;
 338       cur_pos += sizeof(uint8_t);
 339       newId = evId;
 340       time_delta = *(uint32_t*)cur_pos;
 341       cur_pos += sizeof(uint32_t);
 342       tBufStart = (trace_buffer_start*)cur_pos;
 343       cur_pos += sizeof(trace_buffer_start);
 344       cur_pos += sizeof(uint16_t); //Skip event size
 345
 346       startId = newId;
 347       startTimeDelta = time_delta;
 348       start.seconds = tBufStart->Time.tv_sec;
 349       start.nanoseconds = tBufStart->Time.tv_usec;
 350       start.cycle_count = tBufStart->TSC;
 351       start.block_id = tBufStart->ID;
 352       end.block_id = start.block_id;
 353
 354       end_pos = buffer + block_size; //end of the buffer
 355       size_lost = *(uint32_t*)(end_pos - sizeof(uint32_t));
 356
 357       end_pos = buffer + block_size - size_lost ; //buffer_end event
 358       if(ltt_log_cpu){
 359         tBufEnd = (trace_buffer_end*)(end_pos + 2 * sizeof(uint8_t)+sizeof(uint32_t));
 360       }else{
 361         tBufEnd = (trace_buffer_end*)(end_pos+sizeof(uint8_t)+sizeof(uint32_t));
 362       }
 363       end.seconds = tBufEnd->Time.tv_sec;
 364       end.nanoseconds = tBufEnd->Time.tv_usec;
 365       end.cycle_count = tBufEnd->TSC;
 366
 367       //skip buffer start and trace start events
 368       if(i==0) //the first block
 369         cur_pos = buffer + sizeof(trace_buffer_start) + sizeof(trace_start) + 2*(sizeof(uint8_t)+sizeof(uint16_t)+sizeof(uint32_t));
 370       else //other blocks
 371         cur_pos = buffer + sizeof(trace_buffer_start) + sizeof(uint8_t)+sizeof(uint16_t)+sizeof(uint32_t);
 372
 373       //write start block event
 374       write_to_buffer(write_pos,(void*)&startId, sizeof(uint16_t));
 375       write_to_buffer(write_pos,(void*)&startTimeDelta, sizeof(uint32_t));
 376       write_to_buffer(write_pos,(void*)&start, sizeof(buffer_start));
 377
 378       //write start block event into processes and interrupts files
 379       write_to_buffer(write_pos_intr,(void*)&startId, sizeof(uint16_t));
 380       write_to_buffer(write_pos_intr,(void*)&startTimeDelta, sizeof(uint32_t));
 381       start_intr = start;
 382       start_intr.nanoseconds -= 20;
 383       write_to_buffer(write_pos_intr,(void*)&start_intr, sizeof(buffer_start));
 384
 385       write_to_buffer(write_pos_proc,(void*)&startId, sizeof(uint16_t));
 386       write_to_buffer(write_pos_proc,(void*)&startTimeDelta, sizeof(uint32_t));
 387       start_proc = start;
 388       start_proc.nanoseconds -= 40;
 389       write_to_buffer(write_pos_proc,(void*)&start_proc, sizeof(buffer_start));
 390
 391       //parse *.proc file to get process and irq info
 392       if(i == 0){
 393         int        lIntID;                 /* Interrupt ID */
 394         int        lPID, lPPID;            /* Process PID and Parent PID */
 395         char       lName[256];             /* Process name */
 396         FILE *          fProc;
 397         uint16_t        defaultId;
 398         trace_irq_entry irq;
 399
 400         fProc = fopen(argv[1],"r");
 401         if(!fProc){
 402           g_error("Unable to open file %s\n", argv[1]);
 403         }
 404
 405         while(fscanf(fProc, "PID: %d; PPID: %d; NAME: %s\n", &lPID, &lPPID, lName) > 0){
 406           defaultId = PROCESS_FORK_ID;
 407           process.event_data1 = lPID;
 408           process.event_data2 = lPPID;
 409           write_to_buffer(write_pos_proc,(void*)&defaultId, sizeof(uint16_t));
 410           write_to_buffer(write_pos_proc,(void*)&startTimeDelta, sizeof(uint32_t));
 411           write_to_buffer(write_pos_proc,(void*)&process, sizeof(new_process));
 412         }
 413
 414         while(fscanf(fProc, "IRQ: %d; NAME: ", &lIntID) > 0){
 415           /* Read 'til the end of the line */
 416           fgets(lName, 200, fProc);
 417
 418           defaultId =  TRACE_IRQ_ENTRY;
 419           irq.irq_id = lIntID;
 420           irq.kernel = 1;
 421           write_to_buffer(write_pos_intr,(void*)&defaultId, sizeof(uint16_t));
 422           write_to_buffer(write_pos_intr,(void*)&startTimeDelta, sizeof(uint32_t));
 423           write_to_buffer(write_pos_intr,(void*)&irq, sizeof(trace_irq_entry));
 424         }
 425         fclose(fProc);
 426       }
 427
 428       while(1){
 429         int event_size;
 430         uint64_t timeDelta;
 431         uint8_t  subId;
 432
 433         if(ltt_log_cpu){
 434           cpu_id = *(uint8_t*)cur_pos;
 435           cur_pos += sizeof(uint8_t);
 436         }
 437         evId = *(uint8_t *)cur_pos;
 438         newId = evId;
 439         if(evId == TRACE_HEARTBEAT) {
 440           newId = TRACE_HEARTBEAT_ID;
 441         }
 442         cur_pos += sizeof(uint8_t);
 443         time_delta = *(uint32_t*)cur_pos;
 444         cur_pos += sizeof(uint32_t);
 445
 446         //write event_id and time_delta
 447         write_to_buffer(write_pos,(void*)&newId,sizeof(uint16_t));
 448         write_to_buffer(write_pos,(void*)&time_delta, sizeof(uint32_t));
 449
 450         if(evId == TRACE_BUFFER_END){
 451     end.cycle_count = start.cycle_count
 452                          + beat_count * OVERFLOW_FIGURE;
 453           int size = block_size + ((void*)buf_out - write_pos)+ sizeof(uint16_t) + sizeof(uint32_t);
 454           write_to_buffer(write_pos,(void*)&end,sizeof(buffer_start));
 455           write_pos = buf_out + block_size - sizeof(uint32_t);
 456           write_to_buffer(write_pos,(void*)&size, sizeof(uint32_t));
 457           write(fdCpu,(void*)buf_out, block_size);
 458
 459           //write out processes and intrrupts files
 460           {
 461             int size_intr = block_size - (write_pos_intr - (void*)buf_intr);
 462             int size_proc = block_size - (write_pos_proc - (void*)buf_proc);
 463             write_to_buffer(write_pos_intr,(void*)&newId,sizeof(uint16_t));
 464             write_to_buffer(write_pos_intr,(void*)&time_delta, sizeof(uint32_t));
 465             end_intr = end;
 466             end_intr.nanoseconds -= 20;
 467             write_to_buffer(write_pos_intr,(void*)&end_intr,sizeof(buffer_start));
 468
 469             write_to_buffer(write_pos_proc,(void*)&newId,sizeof(uint16_t));
 470             write_to_buffer(write_pos_proc,(void*)&time_delta, sizeof(uint32_t));
 471             end_proc = end;
 472             end_proc.nanoseconds -= 40;
 473             write_to_buffer(write_pos_proc,(void*)&end_proc,sizeof(buffer_start));
 474
 475             write_pos_intr = buf_intr + block_size - sizeof(uint32_t);
 476             write_pos_proc = buf_proc + block_size - sizeof(uint32_t);
 477             write_to_buffer(write_pos_intr,(void*)&size_intr, sizeof(uint32_t));
 478             write_to_buffer(write_pos_proc,(void*)&size_proc, sizeof(uint32_t));
 479             //for now don't output processes and interrupt information
 480             //    write(fdIntr,(void*)buf_intr,block_size);
 481             //    write(fdProc,(void*)buf_proc,block_size);
 482           }
 483           break;
 484         }
 485
 486         event_count++;
 487         switch(evId){
 488           case TRACE_SYSCALL_ENTRY:
 489             event_size = sizeof(trace_syscall_entry);
 490             break;
 491           case TRACE_SYSCALL_EXIT:
 492             event_size = 0;
 493             break;
 494           case TRACE_TRAP_ENTRY:
 495             event_size = sizeof(trace_trap_entry);
 496             break;
 497           case TRACE_TRAP_EXIT:
 498             event_size = 0;
 499             break;
 500           case TRACE_IRQ_ENTRY:
 501             event_size = sizeof(trace_irq_entry);
 502             timeDelta = time_delta;
 503             write_to_buffer(write_pos_intr,(void*)&newId, sizeof(uint16_t));
 504             write_to_buffer(write_pos_intr,(void*)&timeDelta, sizeof(uint32_t));
 505             write_to_buffer(write_pos_intr,cur_pos, event_size);
 506             break;
 507           case TRACE_IRQ_EXIT:
 508             event_size = 0;
 509             timeDelta = time_delta;
 510             write_to_buffer(write_pos_intr,(void*)&newId, sizeof(uint16_t));
 511             write_to_buffer(write_pos_intr,(void*)&timeDelta, sizeof(uint32_t));
 512             break;
 513           case TRACE_SCHEDCHANGE:
 514             event_size = sizeof(trace_schedchange);
 515             break;
 516           case TRACE_KERNEL_TIMER:
 517             event_size = 0;
 518             break;
 519           case TRACE_SOFT_IRQ:
 520             event_size = sizeof(trace_soft_irq);
 521             //    timeDelta = time_delta;
 522             //    write_to_buffer(write_pos_intr,(void*)&newId, sizeof(uint16_t));
 523             //    write_to_buffer(write_pos_intr,(void*)&timeDelta, sizeof(uint32_t));
 524             //    write_to_buffer(write_pos_intr,cur_pos, event_size);
 525             break;
 526           case TRACE_PROCESS:
 527             event_size = sizeof(trace_process);
 528             timeDelta = time_delta;
 529             subId = *(uint8_t*)cur_pos;
 530             if(subId == TRACE_PROCESS_FORK || subId ==TRACE_PROCESS_EXIT){
 531               if( subId == TRACE_PROCESS_FORK)tmpId = PROCESS_FORK_ID;
 532               else tmpId = PROCESS_EXIT_ID;
 533               write_to_buffer(write_pos_proc,(void*)&tmpId, sizeof(uint16_t));
 534               write_to_buffer(write_pos_proc,(void*)&timeDelta, sizeof(uint32_t));
 535
 536               process = *(new_process*)(cur_pos + sizeof(uint8_t));
 537               write_to_buffer(write_pos_proc,(void*)&process, sizeof(new_process));
 538             }
 539             break;
 540           case TRACE_FILE_SYSTEM:
 541             event_size = sizeof(trace_file_system)- sizeof(char*);
 542             break;
 543           case TRACE_TIMER:
 544             event_size = sizeof(trace_timer);
 545             break;
 546           case TRACE_MEMORY:
 547             event_size = sizeof(trace_memory);
 548             break;
 549           case TRACE_SOCKET:
 550             event_size = sizeof(trace_socket);
 551             break;
 552           case TRACE_IPC:
 553             event_size = sizeof(trace_ipc);
 554             break;
 555           case TRACE_NETWORK:
 556             event_size = sizeof(trace_network);
 557             break;
 558           case TRACE_HEARTBEAT:
 559             beat_count++;
 560             beat.seconds = 0;
 561             beat.nanoseconds = 0;
 562             beat.cycle_count = (uint64_t)start.cycle_count
 563                          + (uint64_t)beat_count * OVERFLOW_FIGURE;
 564             event_size = 0;
 565
 566             write_to_buffer(write_pos_intr,(void*)&newId, sizeof(uint16_t));
 567             write_to_buffer(write_pos_intr,(void*)&timeDelta, sizeof(uint32_t));
 568             write_to_buffer(write_pos_intr,(void*)&beat, sizeof(heartbeat));
 569             write_to_buffer(write_pos_proc,(void*)&newId, sizeof(uint16_t));
 570             write_to_buffer(write_pos_proc,(void*)&timeDelta, sizeof(uint32_t));
 571             write_to_buffer(write_pos_proc,(void*)&beat, sizeof(heartbeat));
 572             break;
 573           default:
 574             event_size = -1;
 575             break;
 576         }
 577         if(evId != TRACE_FILE_SYSTEM && event_size >=0){
 578           write_to_buffer(write_pos, cur_pos, event_size);
 579
 580           if(evId == TRACE_HEARTBEAT){
 581             write_to_buffer(write_pos, (void*)&beat, sizeof(heartbeat));
 582           }
 583
 584           cur_pos += event_size + sizeof(uint16_t); //skip data_size
 585         }else if(evId == TRACE_FILE_SYSTEM){
 586           size_t nbBytes;
 587           char  c = '\0';
 588           tFileSys = (trace_file_system*)cur_pos;
 589           subId = tFileSys->event_sub_id;
 590           if(subId == TRACE_FILE_SYSTEM_OPEN || subId == TRACE_FILE_SYSTEM_EXEC){
 591             nbBytes = tFileSys->event_data2 +1;
 592           }else nbBytes = 0;
 593
 594           write_to_buffer(write_pos, cur_pos, event_size);
 595           cur_pos += event_size + sizeof(char*);
 596           if(nbBytes){
 597             write_to_buffer(write_pos, cur_pos, nbBytes);
 598           }else{
 599             write_to_buffer(write_pos, (void*)&c, 1);
 600           }
 601           cur_pos += nbBytes + sizeof(uint16_t); //skip data_size
 602         }else if(event_size == -1){
 603           printf("Unknown event: evId=%d, i=%d, event_count=%d\n", newId, i, event_count);
 604           exit(1);
 605         }
 606       } //end while(1)
 607     }
 608     close(fd);
 609     close(fdCpu);
 610     g_free(buffer);
 611     buffer = NULL;
 612     g_free(buf_fac);
 613     g_free(buf_intr);
 614     g_free(buf_proc);
 615     g_free(buf_out);
 616   }
 617
 618
 619
 620
 621
 622   //write to system.xml
 623   fprintf(fp,"<system \n");
 624   fprintf(fp,"node_name=\"%s\" \n", node_name);
 625   fprintf(fp,"domainname=\"%s\" \n", domainname);
 626   fprintf(fp,"cpu=\"%d\" \n", cpu);
 627   fprintf(fp,"arch_size=\"%s\" \n", arch_size);
 628   fprintf(fp,"endian=\"%s\" \n",endian);
 629   fprintf(fp,"kernel_name=\"%s\" \n",kernel_name);
 630   fprintf(fp,"kernel_release=\"%s\" \n",kernel_release);
 631   fprintf(fp,"kernel_version=\"%s\" \n",kernel_version);
 632   fprintf(fp,"machine=\"%s\" \n",machine);
 633   fprintf(fp,"processor=\"%s\" \n",processor);
 634   fprintf(fp,"hardware_platform=\"%s\" \n",hardware_platform);
 635   fprintf(fp,"operating_system=\"%s\" \n",operating_system);
 636   fprintf(fp,"ltt_major_version=\"%d\" \n",ltt_major_version);
 637   fprintf(fp,"ltt_minor_version=\"%d\" \n",ltt_minor_version);
 638   fprintf(fp,"ltt_block_size=\"%d\" \n",ltt_block_size);
 639   fprintf(fp,">\n");
 640   fprintf(fp,"This is just a test\n");
 641   fprintf(fp,"</system>\n");
 642   fflush(fp);
 643
 644   close(fdFac);
 645   close(fdIntr);
 646   close(fdProc);
 647   fclose(fp);
 648
 649   return 0;
 650 }
 651