tools/tesh2/src/command.c

   1
   2 #include <command.h>
   3 #include <context.h>
   4 #include <writer.h>
   5 #include <reader.h>
   6 #include <timer.h>
   7
   8 #ifndef WIN32
   9 #include <sys/types.h>
  10 #include <sys/wait.h>
  11 #endif
  12
  13 #include "../include/_signal.h"
  14
  15
  16 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(tesh);
  17
  18 static void*
  19 command_start(void* p);
  20
  21
  22 command_t
  23 command_new(unit_t unit, context_t context, xbt_os_mutex_t mutex)
  24 {
  25         command_t command = xbt_new0(s_command_t, 1);
  26
  27         /* get the context of the execution of the command */
  28         command->context = context_dup(context);
  29
  30         /* the exit code of the command is indefinite */
  31         command->exit_code = INDEFINITE;
  32
  33         /* the signal of the command is indefinite */
  34         command->signal = INDEFINITE_SIGNAL;
  35
  36         command->failed = 0;
  37         command->interrupted = 0;
  38
  39         /* the mutex used to safetly access to the command unit properties */
  40         command->mutex = mutex;
  41
  42         if(context->output->used)
  43                 /* instantiate the buffer filled with the content of the command stdout */
  44                 command->output = xbt_strbuff_new();
  45         else
  46                 command->output = NULL;
  47
  48         command->pid = INDEFINITE_PID;
  49
  50         command->stat_val = -1;
  51
  52         /* set the unit of the command */
  53         command->unit = unit;
  54
  55         /* all the commands are runned in a thread */
  56         command->thread = NULL;
  57
  58         command->successeded = 0;
  59
  60         if(context->output->used)
  61                 command->reader = reader_new(command);
  62         else
  63                 command->reader = NULL;
  64
  65         if(context->input->used)
  66                 command->writer = writer_new(command);
  67         else
  68                 command->writer = NULL;
  69
  70         if(context->timeout != INDEFINITE)
  71                 command->timer = timer_new(command);
  72         else
  73                 command->timer = NULL;
  74
  75         command->status = cs_initialized;
  76         command->reason = csr_unknown;
  77
  78         command->stdin_fd = INDEFINITE_FD;
  79         command->stdout_fd = INDEFINITE_FD;
  80
  81
  82         /* register the command */
  83         xbt_os_mutex_acquire(mutex);
  84         /*unit->commands[(unit->number_of_commands)++] = command;*/
  85         vector_push_back(unit->commands, command);
  86         (unit->number_of_commands)++;
  87         xbt_os_mutex_release(mutex);
  88
  89         #ifndef WIN32
  90         command->killed = 0;
  91         #endif
  92
  93         return command;
  94 }
  95
  96 void
  97 command_run(command_t command)
  98 {
  99         if(!want_silent)
 100                 INFO1("tesh %s",command->context->command_line);
 101
 102         if(!want_just_display)
 103         {
 104                 if(!interrupted)
 105                 {
 106                         /* start the command */
 107
 108                         if(command->context->async)
 109                         {
 110                                 command->thread = xbt_os_thread_create("", command_start, command);
 111
 112                                 if(!command->thread)
 113                                         ERROR0("xbt_os_thread_create() failed\n");
 114                         }
 115                         else
 116                                 command_start(command);
 117                 }
 118                 else
 119                 {
 120                         command_interrupt(command);
 121                 }
 122         }
 123
 124 }
 125
 126 static void*
 127 command_start(void* p)
 128 {
 129         command_t command = (command_t)p;
 130         unit_t unit = command->unit;
 131
 132         /* the command is started */
 133         command->status = cs_started;
 134
 135         /* increment the number of started commands of the unit */
 136         xbt_os_mutex_acquire(command->mutex);
 137         (command->unit->number_of_started_commands)++;
 138         xbt_os_mutex_release(command->mutex);
 139
 140         /* execute the command of the test */
 141         command_exec(command, command->context->command_line);
 142
 143         if(cs_in_progress == command->status)
 144         {
 145                 /*printf("the command %p is in progress\n",command);*/
 146
 147                 /* on attend la fin de la commande.
 148                  * la command peut soit se terminée normalement,
 149                  * soit se terminée à la suite d'un timeout, d'une erreur de lecture des son reader ou d'une erreur d'écriture de son writer
 150                  * soit à la suit d'une demande d'interruption
 151                  */
 152
 153                 command_wait(command);
 154
 155                 if(cs_failed != command->status && cs_interrupted != command->status)
 156                 {
 157                         /*printf("checking the command %p\n",command);*/
 158                         command_check(command);
 159                 }
 160         }
 161
 162
 163         xbt_os_mutex_acquire(command->mutex);
 164
 165         /* if it's the last command release its unit */
 166         if(!unit->interrupted && unit->parsed && (unit->number_of_started_commands == (unit->number_of_failed_commands + unit->number_of_interrupted_commands + unit->number_of_successeded_commands)))
 167         {
 168                 /* first release the mutex */
 169                 unit->released = 1;
 170                 xbt_os_mutex_release(command->mutex);
 171                 /* the last command release the unit */
 172                 xbt_os_sem_release(command->unit->sem);
 173         }
 174         else
 175                 xbt_os_mutex_release(command->mutex);
 176
 177
 178         /* wait the end of the timer, the reader and the writer */
 179         if(command->timer && command->timer->thread)
 180                 timer_wait(command->timer);
 181
 182         if(command->writer && command->writer->thread)
 183                 writer_wait(command->writer);
 184
 185         if(command->reader && command->reader->thread)
 186                 reader_wait(command->reader);
 187
 188         return NULL;
 189 }
 190
 191 #ifdef WIN32
 192 void
 193 command_exec(command_t command, const char* command_line)
 194 {
 195
 196         STARTUPINFO si = {0};                                   /* contains the informations about the child process windows*/
 197         PROCESS_INFORMATION pi = {0};                   /* contains child process informations                                          */
 198         SECURITY_ATTRIBUTES sa = {0};                   /* contains the security descriptor for the pipe handles        */
 199         HANDLE child_stdin_handle[2] = {NULL};  /* child_stdin_handle[1]        <-> stdout of the child process */
 200         HANDLE child_stdout_handle[2] = {NULL}; /* child_stdout_handle[0]       <-> stdin of the child process  */
 201         HANDLE child_stderr = NULL;
 202
 203         sa.nLength = sizeof(SECURITY_ATTRIBUTES);
 204     sa.lpSecurityDescriptor = NULL;                     /* use default security for the pipe handles                            */
 205
 206         sa.bInheritHandle = TRUE;                               /* the pipe handles can be inherited                                            */
 207
 208         if(!CreatePipe(&(child_stdin_handle[0]),&(child_stdin_handle[1]),&sa,0))
 209     {
 210                 ERROR1("CreatePipe1() failed (%lu)",GetLastError());
 211                 command->failed = 1;
 212                 command->status = cs_failed;
 213
 214                 return;
 215     }
 216
 217
 218         if(!DuplicateHandle(GetCurrentProcess(),(child_stdin_handle[1]),GetCurrentProcess(),&(child_stderr),0,TRUE,DUPLICATE_SAME_ACCESS))
 219     {
 220                 ERROR1("DuplicateHandle1() failed (%lu)",GetLastError());
 221
 222                 CloseHandle(child_stdin_handle[0]);
 223                 CloseHandle(child_stdin_handle[1]);
 224
 225                 command->failed = 1;
 226                 command->status = cs_failed;
 227
 228                 return;
 229     }
 230
 231         if(!CreatePipe(&(child_stdout_handle[0]),&(child_stdout_handle[1]),&sa,0))
 232     {
 233                 ERROR1("CreatePipe2() failed (%lu)",GetLastError());
 234
 235                 CloseHandle(child_stdout_handle[0]);
 236                 CloseHandle(child_stdout_handle[1]);
 237                 CloseHandle(child_stdin_handle[0]);
 238                 CloseHandle(child_stdin_handle[1]);
 239
 240                 command->failed = 1;
 241                 command->status = cs_failed;
 242
 243                 return;
 244     }
 245
 246         /* Read handle for read operations on the child std output. */
 247         if(!DuplicateHandle(GetCurrentProcess(),(child_stdin_handle[0]),GetCurrentProcess(),&(command->stdout_fd),0,FALSE, DUPLICATE_SAME_ACCESS))
 248     {
 249                 CloseHandle(child_stdout_handle[0]);
 250                 CloseHandle(child_stdout_handle[1]);
 251                 CloseHandle(child_stdin_handle[0]);
 252                 CloseHandle(child_stdin_handle[1]);
 253
 254                 command->failed = 1;
 255                 command->status = cs_failed;
 256
 257                 ERROR1("DuplicateHandle2() failed (%lu)",GetLastError());
 258     }
 259
 260
 261         /* Write handle for write operations on the child std input. */
 262         if(!DuplicateHandle(GetCurrentProcess(),(child_stdout_handle[1]),GetCurrentProcess(),&(command->stdin_fd), 0,FALSE,DUPLICATE_SAME_ACCESS))
 263     {
 264                 CloseHandle(child_stdout_handle[0]);
 265                 CloseHandle(child_stdout_handle[1]);
 266                 CloseHandle(child_stdin_handle[0]);
 267                 CloseHandle(child_stdin_handle[1]);
 268
 269                 command->failed = 1;
 270                 command->status = cs_failed;
 271
 272                 ERROR1("DuplicateHandle3() failed (%lu)",GetLastError());
 273     }
 274
 275
 276         CloseHandle(child_stdin_handle[0]);
 277         CloseHandle(child_stdout_handle[1]);
 278
 279         if(command->timer)
 280         {
 281                 /* launch the timer */
 282                 timer_time(command->timer);
 283         }
 284
 285         if(command->reader)
 286         {
 287                 /* launch the reader */
 288                 reader_read(command->reader);
 289         }
 290
 291
 292         if(command->writer)
 293         {
 294                 /* launch the writer */
 295                 writer_write(command->writer);
 296         }
 297
 298     si.cb = sizeof(STARTUPINFO);
 299
 300         si.dwFlags |= STARTF_USESTDHANDLES;
 301         si.hStdOutput = child_stdin_handle[1];
 302         si.hStdInput  = child_stdout_handle[0];
 303         si.hStdError  = child_stderr;
 304
 305         /* launch the process */
 306         if(!CreateProcess(
 307                                                 NULL,
 308                                                 (char*)command_line,
 309                                                 NULL,
 310                                                 NULL,
 311                                                 TRUE,
 312                                                 CREATE_NO_WINDOW,
 313                                                 NULL,
 314                                                 NULL,
 315                                                 &si,
 316                                                 &pi)
 317         )
 318         {
 319
 320                 if(ERROR_FILE_NOT_FOUND == GetLastError())
 321                 {
 322                         exit_code = ECMDNOTFOUND;
 323                         command_handle_failure(command,csr_command_not_found);
 324                 }
 325                 else
 326                 {
 327                         exit_code = EEXEC;
 328                         command_handle_failure(command,csr_exec_failure);
 329                 }
 330     }
 331         else
 332         {
 333                 /* the command is running */
 334                 command->status = cs_in_progress;
 335
 336                 /* save the pid of the command */
 337                 command->pid = pi.hProcess;
 338
 339                 /* close non used thread handle */
 340                 CloseHandle(pi.hThread);
 341
 342         }
 343
 344
 345         /* close non used handles */
 346         CloseHandle(child_stdin_handle[1]);
 347     CloseHandle(child_stdout_handle[0]);
 348         CloseHandle(child_stderr);
 349
 350
 351 }
 352 #else
 353 void
 354 command_exec(command_t command, const char* command_line)
 355 {
 356         int child_stdin_fd[2] ;
 357         int child_stdout_fd[2];
 358
 359         if(pipe(child_stdin_fd) || pipe(child_stdout_fd))
 360         {
 361                 ERROR1("pipe() failed (%d)",errno);
 362                 command_handle_failure(command, csr_pipe_function_failed);
 363
 364                 return;
 365         }
 366
 367         command->pid= fork();
 368
 369         if(command->pid < 0)
 370         {
 371                 close(child_stdin_fd[0]);
 372                 close(child_stdin_fd[1]);
 373                 close(child_stdout_fd[0]);
 374                 close(child_stdout_fd[1]);
 375
 376                 exit_code = EEXEC;
 377                 ERROR1("fork() failed (%d)",errno);
 378                 command_handle_failure(command,csr_exec_failure);
 379         }
 380         else
 381         {
 382                 if(command->pid)
 383                 {/* father */
 384                         close(child_stdin_fd[0]);
 385                         close(child_stdout_fd[1]);
 386
 387                         command->stdin_fd = child_stdin_fd[1];
 388                         command->stdout_fd = child_stdout_fd[0];
 389
 390                         if(command->reader)
 391                         {
 392                                 /* launch the reader */
 393                                 reader_read(command->reader);
 394                         }
 395
 396                         if(command->writer)
 397                         {
 398                                 /* launch the writer */
 399                                 writer_write(command->writer);
 400                         }
 401
 402                         if(command->timer)
 403                         {
 404                                 /* launch the timer */
 405                                 timer_time(command->timer);
 406                         }
 407
 408                         /* the command is running */
 409                         command->status = cs_in_progress;
 410
 411                 }
 412                 else
 413                 {/* child */
 414
 415                         close(child_stdin_fd[1]);
 416
 417                         dup2(child_stdin_fd[0],0);
 418
 419                         close(child_stdin_fd[0]);
 420
 421                         close(child_stdout_fd[0]);
 422
 423                         dup2(child_stdout_fd[1],1);
 424
 425                         dup2(child_stdout_fd[1],2);
 426
 427                         close(child_stdout_fd[1]);
 428
 429                         if(command->reader)
 430                                 xbt_os_sem_acquire(command->reader->started);
 431
 432                         if(command->writer)
 433                                 xbt_os_sem_acquire(command->writer->started);
 434
 435                         if(command->timer)
 436                                 xbt_os_sem_acquire(command->timer->started);
 437
 438                         execlp ("/bin/sh", "sh", "-c", command->context->command_line, NULL);
 439                 }
 440         }
 441 }
 442 #endif
 443
 444 #ifdef WIN32
 445 void
 446 command_wait(command_t command)
 447 {
 448         /* wait for the command terminaison */
 449         DWORD rv;
 450
 451         if(WAIT_FAILED == WaitForSingleObject(command->pid, INFINITE))
 452         {
 453                 ERROR0("WaitForSingleObject() failed");
 454                 /* TODO : see for the interruption      */
 455         }
 456         else
 457         {
 458                 /* don't take care of the timer or the writer or the reader failue */
 459                 if(cs_failed != command->status && cs_interrupted != command->status)
 460                 {
 461                         if(!GetExitCodeProcess(command->pid,&rv))
 462                         {
 463                                 ERROR1("GetExitCodeProcess() failed for the child %s",command->context->command_line);
 464                                 /* TODO : see for the interruption      */
 465                         }
 466                         else
 467                                 command->stat_val = command->exit_code = rv;
 468                 }
 469         }
 470 }
 471 #else
 472 void
 473 command_wait(command_t command)
 474 {
 475
 476         int pid;
 477
 478         /* let this thread wait for the child so that the main thread can detect the timeout without blocking on the wait */
 479
 480         pid = waitpid(command->pid, &(command->stat_val), 0);
 481
 482         /*printf("The %p command ended\n",command);*/
 483         if(pid != command->pid)
 484         {
 485                 ERROR1("waitpid() failed for the child %s",command->context->command_line);
 486                 exit_code = EWAIT;
 487                 command_handle_failure(command, csr_wait_failure);
 488         }
 489         else
 490         {
 491                 if(WIFEXITED(command->stat_val))
 492                         command->exit_code = WEXITSTATUS(command->stat_val);
 493         }
 494 }
 495 #endif
 496
 497 void
 498 command_check(command_t command)
 499 {
 500         int success = 1;
 501         cs_reason_t reason;
 502
 503         /* we have a signal, store it */
 504         if(WIFSIGNALED(command->stat_val))
 505         {
 506                 command->signal = strdup(signal_name(WTERMSIG(command->stat_val),command->context->signal));
 507                 INFO3("the command -PID %d %s receive the signal : %s",command->pid, command->context->command_line, command->signal);
 508         }
 509
 510         /* we have a signal and not signal is expected */
 511         if(WIFSIGNALED(command->stat_val) && !command->context->signal)
 512         {
 513                 success = 0;
 514                 exit_code = EUNEXPECTEDSIG;
 515                 reason = csr_unexpected_signal_caught;
 516         }
 517
 518         /* we have a signal that differ form the expected signal */
 519         if(success && WIFSIGNALED(command->stat_val) && command->context->signal && strcmp(signal_name(WTERMSIG(command->stat_val),command->context->signal),command->context->signal))
 520         {
 521                 success = 0;
 522                 exit_code = ESIGNOTMATCH;
 523                 reason = csr_signals_dont_match;
 524         }
 525
 526         /* we don't receipt the expected signal */
 527         if(success && !WIFSIGNALED(command->stat_val) && command->context->signal)
 528         {
 529                 success = 0;
 530                 exit_code = ESIGNOTRECEIPT;
 531                 reason = csr_expected_signal_not_receipt;
 532         }
 533
 534         /* if the command exit normaly and we expect a exit code : test it */
 535         if(success && WIFEXITED(command->stat_val) /* && INDEFINITE != command->context->exit_code*/)
 536         {
 537                 /* the exit codes don't match */
 538                 if(WEXITSTATUS(command->stat_val) != command->context->exit_code)
 539                 {
 540                         success = 0;
 541                         exit_code = EEXITCODENOTMATCH;
 542                         reason = csr_exit_codes_dont_match;
 543                 }
 544         }
 545
 546         /* if ouput handling flag is specified check the output */
 547         if(success && oh_check == command->context->output_handling && command->reader)
 548         {
 549                 /* make sure the reader done */
 550                 while(!command->reader->broken_pipe)
 551                         xbt_os_thread_yield();
 552
 553                         xbt_strbuff_chomp(command->output);
 554                         xbt_strbuff_chomp(command->context->output);
 555                         xbt_strbuff_trim(command->output);
 556                         xbt_strbuff_trim(command->context->output);
 557
 558                         if(command->output->used != command->context->output->used || strcmp(command->output->data, command->context->output->data))
 559                         {
 560                                 success = 0;
 561                                 exit_code = EOUTPUTNOTMATCH;
 562                                 reason = csr_outputs_dont_match;
 563                         }
 564         }
 565
 566         if(success)
 567         {
 568                 xbt_os_mutex_acquire(command->mutex);
 569
 570                 if(command->status != cs_interrupted)
 571                 {
 572
 573                         /* signal the success of the command */
 574                         command->status = cs_successeded;
 575                         command->successeded = 1;
 576
 577                         /* increment the number of successeded command of the unit */
 578                         /*xbt_os_mutex_acquire(command->mutex);*/
 579                         (command->unit->number_of_successeded_commands)++;
 580                 }
 581
 582                 xbt_os_mutex_release(command->mutex);
 583
 584         }
 585         else
 586         {
 587                 command_handle_failure(command,reason);
 588         }
 589 }
 590
 591 #ifdef WIN32
 592 void
 593 command_kill(command_t command)
 594 {
 595         if(INDEFINITE_PID != command->pid)
 596                 TerminateProcess(command->pid, INDEFINITE);
 597 }
 598 #else
 599 void
 600 command_kill(command_t command)
 601 {
 602         if(INDEFINITE_PID != command->pid)
 603         {
 604                 /*INFO1("Kill the command - PID %d",command->pid);*/
 605
 606                 kill(command->pid,SIGTERM);
 607
 608                 if(!command->context->signal)
 609                         command->context->signal = strdup("SIGTERM");
 610
 611                 command->exit_code = INDEFINITE;
 612                 command->killed = 1;
 613
 614                 usleep(100);
 615                 kill(command->pid,SIGKILL);
 616
 617
 618         }
 619 }
 620 #endif
 621
 622 void
 623 command_interrupt(command_t command)
 624 {
 625         xbt_os_mutex_acquire(command->mutex);
 626
 627         if((command->status != cs_interrupted) && (command->status != cs_failed) && (command->status != cs_successeded))
 628         {
 629                 /*INFO1("Begin interrupt the command - PID %d",command->pid);*/
 630
 631                 command->status = cs_interrupted;
 632                 command->reason = csr_interruption_request;
 633                 command->interrupted = 1;
 634                 xbt_os_mutex_acquire(command->unit->mutex);
 635                 (command->unit->number_of_interrupted_commands)++;
 636                 xbt_os_mutex_release(command->unit->mutex);
 637
 638                 if(command->pid != INDEFINITE_PID)
 639                         command_kill(command);
 640
 641
 642                 /*INFO1("End interrupt the command - PID %d",command->pid);*/
 643         }
 644
 645         xbt_os_mutex_release(command->mutex);
 646
 647
 648 }
 649
 650 void
 651 command_display_status(command_t command)
 652 {
 653         #ifdef WIN32
 654         printf("\nCommand : PID - %p\n%s\n",command->pid,command->context->command_line);
 655         #else
 656         printf("\nCommand : PID - %d\n%s\n",command->pid,command->context->command_line);
 657         #endif
 658         printf("Status informations :\n");
 659         printf("    position in the tesh file   : %s\n",command->context->line);
 660
 661         /* the command successeded */
 662         if(cs_successeded == command->status)
 663         {
 664                 /* status */
 665                 printf("    status                      : success\n");
 666         }
 667         else
 668         {
 669
 670                 /* display if the command is interrupted, failed or in a unknown status */
 671                 if(cs_interrupted == command->status)
 672                         printf("    status                      : interrupted\n");
 673                 else if(cs_failed == command->status)
 674                         printf("    status                      : failed\n");
 675                 else
 676                         printf("    status                      : unknown\n");
 677
 678                 #ifndef WIN32
 679                 if(command->killed)
 680                         printf("    <killed command>\n");
 681                 #endif
 682
 683                 /* display the reason of the status of the command */
 684                 switch(command->reason)
 685                 {
 686                         /* the function pipe or CreatePipe() fails */
 687                         case csr_pipe_function_failed :
 688                         printf("    reason                      : pipe() or CreatePipe() function failed (system error)\n");
 689                         break;
 690
 691                         /* reader failure reasons*/
 692                         case csr_read_pipe_broken :
 693                         printf("    reason                      : command read pipe broken\n");
 694                         break;
 695
 696                         case csr_read_failure :
 697                         printf("    reason                      : command stdout read failed\n");
 698                         break;
 699
 700                         /* writer failure reasons */
 701                         case csr_write_failure :
 702                         printf("    reason                      : command stdin write failed\n");
 703                         break;
 704
 705                         case csr_write_pipe_broken :
 706                         printf("    reason                      : command write pipe broken\n");
 707                         break;
 708
 709                         /* timer reason */
 710                         case csr_timeout :
 711                         printf("    reason                      : command timeouted\n");
 712                         break;
 713
 714                         /* command failure reason */
 715                         case csr_command_not_found :
 716                         printf("    reason                      : command not found\n");
 717                         break;
 718
 719                         /* context failure reasons */
 720                         case csr_exit_codes_dont_match :
 721                         printf("    reason                      : exit codes don't match\n");
 722
 723                         break;
 724
 725                         case csr_outputs_dont_match :
 726                         {
 727                                 char *diff;
 728                                 printf("    reason                      : ouputs don't match\n");
 729                                 diff = xbt_str_diff(command->context->output->data,command->output->data);
 730                                 printf("    output diff :\n%s\n",diff);
 731                                 free(diff);
 732                         }
 733
 734                         break;
 735
 736                         case csr_signals_dont_match :
 737                         printf("    reason                      : signals don't match\n");
 738                         break;
 739
 740                         case csr_unexpected_signal_caught:
 741                         printf("    reason                      : unexpected signal caught\n");
 742                         break;
 743
 744                         case csr_expected_signal_not_receipt :
 745                         printf("    reason                      : expected signal not receipt\n");
 746                         break;
 747
 748                         /* system failure reasons */
 749                         case csr_exec_failure :
 750                         printf("    reason                      : can't excute the command\n");
 751                         break;
 752
 753                         case csr_wait_failure :
 754                         printf("    reason                      : wait command failure\n");
 755                         break;
 756
 757                         /* global/local interruption */
 758                         case csr_interruption_request :
 759                         printf("    reason                      : the command receive a interruption request\n");
 760                         break;
 761
 762                         /* unknown ? */
 763                         case csr_unknown :
 764                         printf("    reason                      : unknown \n");
 765                 }
 766         }
 767
 768         if(csr_command_not_found != command->reason && csr_exec_failure != command->reason)
 769         {
 770                 if(INDEFINITE != command->exit_code)
 771                         /* the command exit code */
 772                         printf("    exit code                   : %d\n",command->exit_code);
 773
 774                 /* if an expected exit code was specified display it */
 775                 if(INDEFINITE != command->context->exit_code)
 776                         printf("    expected exit code          : %d\n",command->context->exit_code);
 777                 else
 778                         printf("    no expected exit code specified\n");
 779
 780                 /* if an expected exit code was specified display it */
 781                 if(NULL == command->context->signal)
 782                         printf("    no expected signal specified\n");
 783                 else
 784                 {
 785                         if(NULL != command->signal)
 786                                 printf("    signal                      : %s\n",command->signal);
 787
 788                         printf("    expected signal             : %s\n",command->context->signal);
 789                 }
 790
 791                 /* if the command has out put and the metacommand display output is specified display it  */
 792                 if(command->output && (0 != command->output->used) && (oh_display == command->context->output_handling))
 793                 {
 794                         xbt_dynar_t a = xbt_str_split(command->output->data, "\n");
 795                         char *out = xbt_str_join(a,"\n||");
 796                         xbt_dynar_free(&a);
 797                         printf("    output :\n||%s",out);
 798                         free(out);
 799                 }
 800         }
 801
 802         printf("\n");
 803
 804
 805 }
 806
 807 void
 808 command_handle_failure(command_t command, cs_reason_t reason)
 809 {
 810
 811         unit_t unit = command->unit;
 812
 813         xbt_os_mutex_acquire(command->mutex);
 814
 815         if((command->status != cs_interrupted) && (command->status != cs_failed))
 816         {
 817                 command->status = cs_failed;
 818                 command->reason = reason;
 819                 command->failed = 1;
 820
 821                 xbt_os_mutex_acquire(unit->mutex);
 822
 823                 /* increment the number of failed command of the unit */
 824                 unit->number_of_failed_commands++;
 825
 826                 /* if the --ignore-failures option is not specified */
 827                 if(!want_keep_going_unit)
 828                 {
 829                         if(!unit->interrupted)
 830                         {
 831                                 /* the unit interrupted (exit for the loop) */
 832                                 unit->interrupted = 1;
 833
 834                                 /* release the unit */
 835                                 xbt_os_sem_release(unit->sem);
 836                         }
 837
 838                         /* if the --keep-going option is not specified */
 839                         if(!want_keep_going)
 840                         {
 841                                 if(!interrupted)
 842                                 {
 843                                         /* request an global interruption by the runner */
 844                                         interrupted = 1;
 845
 846                                         /* release the runner */
 847                                         xbt_os_sem_release(units_sem);
 848                                 }
 849                         }
 850                 }
 851
 852                 xbt_os_mutex_release(unit->mutex);
 853         }
 854
 855         xbt_os_mutex_release(command->mutex);
 856 }
 857
 858 void
 859 command_free(command_t* command)
 860 {
 861         /* close the stdin and the stdout pipe handles */
 862
 863         #ifdef WIN32
 864         if((*command)->stdin_fd != INDEFINITE_FD)
 865                 CloseHandle((*command)->stdin_fd);
 866         if((*command)->stdout_fd != INDEFINITE_FD)
 867                 CloseHandle((*command)->stdout_fd);
 868         #else
 869         if((*command)->stdin_fd != INDEFINITE_FD)
 870                 close((*command)->stdin_fd);
 871
 872         if((*command)->stdout_fd != INDEFINITE_FD)
 873                 close((*command)->stdout_fd);
 874         #endif
 875
 876         timer_free(&((*command)->timer));
 877         writer_free(&((*command)->writer));
 878         reader_free(&((*command)->reader));
 879         xbt_strbuff_free((*command)->output);
 880         context_free(&((*command)->context));
 881
 882         if((*command)->signal)
 883                 free((*command)->signal);
 884
 885         free(*command);
 886         *command = NULL;
 887 }
 888
 889
 890