1: /*
2: ================================================================================
3: RPL/2 (R) version 4.0.12
4: Copyright (C) 1989-2010 Dr. BERTRAND Joël
5:
6: This file is part of RPL/2.
7:
8: RPL/2 is free software; you can redistribute it and/or modify it
9: under the terms of the CeCILL V2 License as published by the french
10: CEA, CNRS and INRIA.
11:
12: RPL/2 is distributed in the hope that it will be useful, but WITHOUT
13: ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14: FITNESS FOR A PARTICULAR PURPOSE. See the CeCILL V2 License
15: for more details.
16:
17: You should have received a copy of the CeCILL License
18: along with RPL/2. If not, write to info@cecill.info.
19: ================================================================================
20: */
21:
22:
23: #include "rpl.conv.h"
24:
25:
26: /*
27: ================================================================================
28: Fonction 'while'
29: ================================================================================
30: Entrées :
31: --------------------------------------------------------------------------------
32: Sorties :
33: --------------------------------------------------------------------------------
34: Effets de bord : néant
35: ================================================================================
36: */
37:
38: void
39: instruction_while(struct_processus *s_etat_processus)
40: {
41: (*s_etat_processus).erreur_execution = d_ex;
42:
43: if ((*s_etat_processus).affichage_arguments == 'Y')
44: {
45: printf("\n WHILE ");
46:
47: if ((*s_etat_processus).langue == 'F')
48: {
49: printf("(structure de contrôle)\n\n");
50: printf(" Utilisation :\n\n");
51: }
52: else
53: {
54: printf("(control statement)\n\n");
55: printf(" Usage:\n\n");
56: }
57:
58: printf(" WHILE\n");
59: printf(" (clause)\n");
60: printf(" REPEAT\n");
61: printf(" (expression 1)\n");
62: printf(" EXIT\n");
63: printf(" (expression 2)\n");
64: printf(" END\n\n");
65:
66: printf(" WHILE\n");
67: printf(" (clause)\n");
68: printf(" REPEAT\n");
69: printf(" (expression)\n");
70: printf(" END\n");
71:
72: return;
73: }
74: else if ((*s_etat_processus).test_instruction == 'Y')
75: {
76: (*s_etat_processus).nombre_arguments = -1;
77: return;
78: }
79:
80: empilement_pile_systeme(s_etat_processus);
81:
82: if ((*s_etat_processus).erreur_systeme != d_es)
83: {
84: return;
85: }
86:
87: (*(*s_etat_processus).l_base_pile_systeme).type_cloture = 'W';
88: (*(*s_etat_processus).l_base_pile_systeme).clause = 'W';
89:
90: if ((*s_etat_processus).mode_execution_programme == 'Y')
91: {
92: (*(*s_etat_processus).l_base_pile_systeme).adresse_retour =
93: (*s_etat_processus).position_courante;
94: }
95: else
96: {
97: if ((*s_etat_processus).expression_courante == NULL)
98: {
99: (*s_etat_processus).erreur_execution =
100: d_ex_erreur_traitement_boucle;
101: return;
102: }
103:
104: (*(*s_etat_processus).l_base_pile_systeme).pointeur_objet_retour =
105: (*s_etat_processus).expression_courante;
106: }
107:
108: return;
109: }
110:
111:
112: /*
113: ================================================================================
114: Fonction 'warranty'
115: ================================================================================
116: Entrées :
117: --------------------------------------------------------------------------------
118: Sorties :
119: --------------------------------------------------------------------------------
120: Effets de bord : néant
121: ================================================================================
122: */
123:
124: void
125: instruction_warranty(struct_processus *s_etat_processus)
126: {
127: # include "garanties.conv.h"
128:
129: (*s_etat_processus).erreur_execution = d_ex;
130:
131: if ((*s_etat_processus).affichage_arguments == 'Y')
132: {
133: printf("\n WARRANTY ");
134:
135: if ((*s_etat_processus).langue == 'F')
136: {
137: printf("(garantie)\n\n");
138: printf(" Aucun argument\n");
139: }
140: else
141: {
142: printf("(warranty)\n\n");
143: printf(" No argument\n");
144: }
145:
146: return;
147: }
148: else if ((*s_etat_processus).test_instruction == 'Y')
149: {
150: (*s_etat_processus).nombre_arguments = -1;
151: return;
152: }
153:
154: printf("%s\n", warranty);
155:
156: if ((*s_etat_processus).hauteur_pile_operationnelle == 0)
157: {
158: printf("\n");
159: }
160:
161: return;
162: }
163:
164:
165: /*
166: ================================================================================
167: Fonction 'wait'
168: ================================================================================
169: Entrées :
170: --------------------------------------------------------------------------------
171: Sorties :
172: --------------------------------------------------------------------------------
173: Effets de bord : néant
174: ================================================================================
175: */
176:
177: void
178: instruction_wait(struct_processus *s_etat_processus)
179: {
180: int code_retour;
181: int erreur;
182:
183: real8 attente;
184:
185: struct_objet *s_objet;
186:
187: struct timespec temporisation;
188:
189: (*s_etat_processus).erreur_execution = d_ex;
190:
191: if ((*s_etat_processus).affichage_arguments == 'Y')
192: {
193: printf("\n WAIT ");
194:
195: if ((*s_etat_processus).langue == 'F')
196: {
197: printf("(attente exprimée en secondes)\n\n");
198: }
199: else
200: {
201: printf("(wait a number of seconds)\n\n");
202: }
203:
204: printf(" 1: %s, %s\n", d_INT, d_REL);
205:
206: return;
207: }
208: else if ((*s_etat_processus).test_instruction == 'Y')
209: {
210: (*s_etat_processus).nombre_arguments = -1;
211: return;
212: }
213:
214: if (test_cfsf(s_etat_processus, 31) == d_vrai)
215: {
216: if (empilement_pile_last(s_etat_processus, 1) == d_erreur)
217: {
218: return;
219: }
220: }
221:
222: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
223: &s_objet) == d_erreur)
224: {
225: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
226: return;
227: }
228:
229: if (((*s_objet).type == INT) ||
230: ((*s_objet).type == REL))
231: {
232: if ((*s_objet).type == INT)
233: {
234: attente = (real8) (*((integer8 *) (*s_objet).objet));
235: }
236: else
237: {
238: attente = (*((real8 *) (*s_objet).objet));
239: }
240:
241: if (attente < 0)
242: {
243: liberation(s_etat_processus, s_objet);
244:
245: (*s_etat_processus).erreur_execution = d_ex_argument_invalide;
246: return;
247: }
248:
249: temporisation.tv_sec = (long) floor((double) attente);
250: temporisation.tv_nsec = (attente - temporisation.tv_sec) *
251: (long) 1000000000;
252:
253: if ((*s_etat_processus).profilage == d_vrai)
254: {
255: profilage(s_etat_processus, "Sleep function (WAIT)");
256:
257: if ((*s_etat_processus).erreur_systeme != d_es)
258: {
259: return;
260: }
261: }
262:
263: do
264: {
265: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
266: {
267: (*s_etat_processus).erreur_systeme = d_es_processus;
268: return;
269: }
270:
271: code_retour = nanosleep(&temporisation, &temporisation);
272: erreur = errno;
273:
274: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
275: {
276: if (errno != EINTR)
277: {
278: (*s_etat_processus).erreur_systeme = d_es_processus;
279: return;
280: }
281: }
282:
283: scrutation_injection(s_etat_processus);
284:
285: if ((*s_etat_processus).nombre_interruptions_non_affectees != 0)
286: {
287: affectation_interruptions_logicielles(s_etat_processus);
288: }
289:
290: if ((*s_etat_processus).nombre_interruptions_en_queue != 0)
291: {
292: traitement_interruptions_logicielles(s_etat_processus);
293: }
294: } while(((code_retour == -1) && (erreur == EINTR))
295: && ((*s_etat_processus).var_volatile_requete_arret == 0));
296:
297: if ((*s_etat_processus).profilage == d_vrai)
298: {
299: profilage(s_etat_processus, NULL);
300: }
301: }
302: else
303: {
304: liberation(s_etat_processus, s_objet);
305:
306: (*s_etat_processus).erreur_execution = d_ex_erreur_type_argument;
307: return;
308: }
309:
310: liberation(s_etat_processus, s_objet);
311:
312: return;
313: }
314:
315:
316: /*
317: ================================================================================
318: Fonction 'wireframe' (passe en mode d'affichage échantillonné)
319: ================================================================================
320: Entrées : structure processus
321: --------------------------------------------------------------------------------
322: Sorties :
323: --------------------------------------------------------------------------------
324: Effets de bord : néant
325: ================================================================================
326: */
327:
328: void
329: instruction_wireframe(struct_processus *s_etat_processus)
330: {
331: (*s_etat_processus).erreur_execution = d_ex;
332:
333: if ((*s_etat_processus).affichage_arguments == 'Y')
334: {
335: printf("\n WIREFRAME ");
336:
337: if ((*s_etat_processus).langue == 'F')
338: {
339: printf("(graphique tridimensionnel grillagé)\n\n");
340: printf(" Aucun argument\n");
341: }
342: else
343: {
344: printf("(wireframe 3D graph)\n\n");
345: printf(" No argument\n");
346: }
347:
348: return;
349: }
350: else if ((*s_etat_processus).test_instruction == 'Y')
351: {
352: (*s_etat_processus).nombre_arguments = -1;
353: return;
354: }
355:
356: strcpy((*s_etat_processus).type_trace_eq, "GRILLE 3D");
357:
358: return;
359: }
360:
361:
362: /*
363: ================================================================================
364: Fonction 'write'
365: ================================================================================
366: Entrées : structure processus
367: --------------------------------------------------------------------------------
368: Sorties :
369: --------------------------------------------------------------------------------
370: Effets de bord : néant
371: ================================================================================
372: */
373:
374: void
375: instruction_write(struct_processus *s_etat_processus)
376: {
377: int adresse[16];
378: int port;
379:
380: long longueur_effective;
381: long recursivite;
382:
383: ssize_t ios;
384:
385: struct_descripteur_fichier *descripteur;
386:
387: struct_objet *s_objet_argument_2;
388: struct_objet *s_objet_argument_1;
389:
390: struct sigaction action;
391: struct sigaction registre;
392:
393: struct sockaddr_in adresse_ipv4;
394: struct sockaddr_in6 adresse_ipv6;
395: struct sockaddr_un adresse_unix;
396:
397: struct flock lock;
398:
399: uint32_t calcul_adresse;
400:
401: unsigned char *chaine;
402: unsigned char *chaine_utf8;
403:
404: unsigned long i;
405:
406: (*s_etat_processus).erreur_execution = d_ex;
407:
408: if ((*s_etat_processus).affichage_arguments == 'Y')
409: {
410: printf("\n WRITE ");
411:
412: if ((*s_etat_processus).langue == 'F')
413: {
414: printf("(écriture d'un enregistrement d'un fichier)\n\n");
415: }
416: else
417: {
418: printf("(write a record of a file)\n\n");
419: }
420:
421: printf(" 2: %s\n", d_LST);
422: printf(" 1: %s, %s\n", d_FCH, d_SCK);
423:
424: return;
425: }
426: else if ((*s_etat_processus).test_instruction == 'Y')
427: {
428: (*s_etat_processus).nombre_arguments = -1;
429: return;
430: }
431:
432: if (test_cfsf(s_etat_processus, 31) == d_vrai)
433: {
434: if (empilement_pile_last(s_etat_processus, 2) == d_erreur)
435: {
436: return;
437: }
438: }
439:
440: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
441: &s_objet_argument_1) == d_erreur)
442: {
443: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
444: return;
445: }
446:
447: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
448: &s_objet_argument_2) == d_erreur)
449: {
450: liberation(s_etat_processus, s_objet_argument_1);
451:
452: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
453: return;
454: }
455:
456: if (((*s_objet_argument_2).type == LST) &&
457: ((*s_objet_argument_1).type == FCH))
458: {
459: if ((descripteur = descripteur_fichier(s_etat_processus,
460: (struct_fichier *) (*s_objet_argument_1).objet)) == NULL)
461: {
462: return;
463: }
464:
465: /*
466: * Vérification des verrous
467: */
468:
469: lock.l_type = F_WRLCK;
470: lock.l_whence = SEEK_SET;
471: lock.l_start = 0;
472: lock.l_len = 0;
473: lock.l_pid = getpid();
474: recursivite = 0;
475:
476: if (fcntl(fileno((*descripteur).descripteur_c), F_GETLK, &lock)
477: == -1)
478: {
479: liberation(s_etat_processus, s_objet_argument_2);
480: liberation(s_etat_processus, s_objet_argument_1);
481:
482: (*s_etat_processus).erreur_systeme = d_es_erreur_fichier;
483: return;
484: }
485:
486: if (lock.l_type != F_UNLCK)
487: {
488: liberation(s_etat_processus, s_objet_argument_2);
489: liberation(s_etat_processus, s_objet_argument_1);
490:
491: (*s_etat_processus).erreur_execution =
492: d_ex_fichier_verrouille;
493: return;
494: }
495:
496: /*
497: * Vérification de l'autorisation d'écriture
498: */
499:
500: if ((*((struct_fichier *) (*s_objet_argument_1).objet))
501: .protection == 'R')
502: {
503: liberation(s_etat_processus, s_objet_argument_2);
504: liberation(s_etat_processus, s_objet_argument_1);
505:
506: (*s_etat_processus).erreur_execution = d_ex_erreur_acces_fichier;
507: return;
508: }
509:
510: if ((*((struct_fichier *) (*s_objet_argument_1).objet)).binaire == 'N')
511: {
512: /*
513: * Fichiers formatés
514: */
515:
516: if ((chaine = formateur_fichier(s_etat_processus,
517: s_objet_argument_2, (*((struct_fichier *)
518: (*s_objet_argument_1).objet)).format, 0, 0, ' ', 'F',
519: &longueur_effective, &recursivite)) == NULL)
520: {
521: liberation(s_etat_processus, s_objet_argument_2);
522: liberation(s_etat_processus, s_objet_argument_1);
523:
524: return;
525: }
526:
527: if ((*((struct_fichier *) (*s_objet_argument_1).objet)).acces
528: == 'S')
529: {
530: BUG(((*descripteur).type != 'C'), uprintf("Bad filetype !\n"));
531:
532: if (fseek((*descripteur).descripteur_c, (long) 0, SEEK_END)
533: != 0)
534: {
535: liberation(s_etat_processus, s_objet_argument_2);
536: liberation(s_etat_processus, s_objet_argument_1);
537:
538: (*s_etat_processus).erreur_systeme = d_es_erreur_fichier;
539: return;
540: }
541:
542: if ((chaine_utf8 = transliteration(s_etat_processus,
543: chaine, d_locale, "UTF-8")) == NULL)
544: {
545: liberation(s_etat_processus, s_objet_argument_2);
546: liberation(s_etat_processus, s_objet_argument_1);
547:
548: return;
549: }
550:
551: if (fprintf((*descripteur).descripteur_c, "%s\n", chaine) < 0)
552: {
553: free(chaine_utf8);
554:
555: (*s_etat_processus).erreur_systeme = d_es_erreur_fichier;
556: return;
557: }
558:
559: free(chaine_utf8);
560: }
561: else if ((*((struct_fichier *) (*s_objet_argument_1).objet)).acces
562: == 'D')
563: {
564: }
565: else
566: {
567: /* Fichiers indexés : panique totale ! */
568: }
569:
570: free(chaine);
571: }
572: else if ((*((struct_fichier *) (*s_objet_argument_1).objet)).binaire
573: == 'Y')
574: {
575: /*
576: * Fichiers non formatés
577: */
578:
579: if ((chaine = formateur_fichier(s_etat_processus,
580: s_objet_argument_2, (*((struct_fichier *)
581: (*s_objet_argument_1).objet)).format, 0, 0, ' ', 'U',
582: &longueur_effective, &recursivite)) == NULL)
583: {
584: liberation(s_etat_processus, s_objet_argument_2);
585: liberation(s_etat_processus, s_objet_argument_1);
586:
587: return;
588: }
589:
590: if ((*((struct_fichier *) (*s_objet_argument_1).objet)).acces
591: == 'S')
592: {
593: BUG(((*descripteur).type != 'C'), uprintf("Bad filetype !\n"));
594:
595: if (fseek((*descripteur).descripteur_c, (long) 0, SEEK_END)
596: != 0)
597: {
598: liberation(s_etat_processus, s_objet_argument_2);
599: liberation(s_etat_processus, s_objet_argument_1);
600:
601: (*s_etat_processus).erreur_systeme = d_es_erreur_fichier;
602: return;
603: }
604:
605: if (fwrite(chaine, sizeof(unsigned char), longueur_effective,
606: (*descripteur).descripteur_c) !=
607: (size_t) longueur_effective)
608: {
609: (*s_etat_processus).erreur_systeme = d_es_erreur_fichier;
610: return;
611: }
612: }
613: else if ((*((struct_fichier *) (*s_objet_argument_1).objet)).acces
614: == 'D')
615: {
616: }
617: else
618: {
619: /* Fichiers indexés : panique totale ! */
620: }
621:
622: free(chaine);
623: }
624: else
625: {
626: /*
627: * Fichiers de type FLOW
628: */
629: }
630: }
631: else if (((*s_objet_argument_2).type == LST) &&
632: ((*s_objet_argument_1).type == SCK))
633: {
634: /*
635: * Vérification de l'autorisation d'écriture
636: */
637:
638: if ((*((struct_socket *) (*s_objet_argument_1).objet))
639: .protection == 'R')
640: {
641: liberation(s_etat_processus, s_objet_argument_2);
642: liberation(s_etat_processus, s_objet_argument_1);
643:
644: (*s_etat_processus).erreur_execution = d_ex_erreur_acces_fichier;
645: return;
646: }
647:
648: if ((*((struct_socket *) (*s_objet_argument_1).objet)).binaire == 'N')
649: {
650: /*
651: * Sockets formatées
652: */
653:
654: if ((chaine = formateur_fichier(s_etat_processus,
655: s_objet_argument_2, (*((struct_socket *)
656: (*s_objet_argument_1).objet)).format, 0, 0, ' ', 'F',
657: &longueur_effective, &recursivite)) == NULL)
658: {
659: liberation(s_etat_processus, s_objet_argument_2);
660: liberation(s_etat_processus, s_objet_argument_1);
661:
662: return;
663: }
664:
665: if ((strcmp((*((struct_socket *) (*s_objet_argument_1).objet)).type,
666: "STREAM") == 0) || (strcmp((*((struct_socket *)
667: (*s_objet_argument_1).objet)).type,
668: "SEQUENTIAL DATAGRAM") == 0))
669: { // Sockets connectées
670:
671: action.sa_handler = SIG_IGN;
672: action.sa_flags = SA_ONSTACK;
673:
674: if (sigaction(SIGPIPE, &action, ®istre) != 0)
675: {
676: (*s_etat_processus).erreur_systeme = d_es_signal;
677: return;
678: }
679:
680: if (sem_post(&((*s_etat_processus).semaphore_fork))
681: != 0)
682: {
683: if (sigaction(SIGPIPE, ®istre, NULL) != 0)
684: {
685: (*s_etat_processus).erreur_systeme = d_es_signal;
686: return;
687: }
688:
689: (*s_etat_processus).erreur_systeme = d_es_processus;
690: return;
691: }
692:
693: if (send((*((struct_socket *) (*s_objet_argument_1).objet))
694: .socket, chaine, strlen(chaine), 0) < 0)
695: {
696: ios = errno;
697:
698: if (sigaction(SIGPIPE, ®istre, NULL) != 0)
699: {
700: (*s_etat_processus).erreur_systeme = d_es_signal;
701: return;
702: }
703:
704: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
705: {
706: if (errno != EINTR)
707: {
708: (*s_etat_processus).erreur_systeme = d_es_processus;
709: return;
710: }
711: }
712:
713: if (ios == EPIPE)
714: {
715: (*s_etat_processus).erreur_execution =
716: d_ex_erreur_acces_fichier;
717: return;
718: }
719:
720: (*s_etat_processus).erreur_systeme = d_es_erreur_fichier;
721: return;
722: }
723:
724: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
725: {
726: if (errno != EINTR)
727: {
728: if (sigaction(SIGPIPE, ®istre, NULL) != 0)
729: {
730: (*s_etat_processus).erreur_systeme = d_es_signal;
731: return;
732: }
733:
734: (*s_etat_processus).erreur_systeme = d_es_processus;
735: return;
736: }
737: }
738:
739: if (sigaction(SIGPIPE, ®istre, NULL) != 0)
740: {
741: (*s_etat_processus).erreur_systeme = d_es_signal;
742: return;
743: }
744: }
745: else
746: { // Sockets non connectées
747:
748: /*
749: * Vérification de l'adresse distante
750: */
751:
752: if (strcmp((*((struct_socket *) (*s_objet_argument_1).objet))
753: .adresse_distante, "") == 0)
754: {
755: liberation(s_etat_processus, s_objet_argument_1);
756: liberation(s_etat_processus, s_objet_argument_2);
757:
758: (*s_etat_processus).erreur_execution =
759: d_ex_erreur_acces_fichier;
760: return;
761: }
762:
763: /*
764: * Création de l'adresse logique
765: */
766:
767: if ((*((struct_socket *) (*s_objet_argument_1).objet))
768: .domaine == PF_UNIX)
769: {
770: adresse_unix.sun_family = AF_UNIX;
771: strncpy(adresse_unix.sun_path, (*((struct_socket *)
772: (*s_objet_argument_1).objet)).adresse_distante,
773: 108);
774: adresse_unix.sun_path[108 - 1] = d_code_fin_chaine;
775:
776: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
777: {
778: (*s_etat_processus).erreur_systeme = d_es_processus;
779: return;
780: }
781:
782: if (sendto((*((struct_socket *)
783: (*s_objet_argument_1).objet)).socket, chaine,
784: strlen(chaine), 0, (struct sockaddr *)
785: &adresse_unix, sizeof(adresse_unix)) < 0)
786: {
787: while(sem_wait(&((*s_etat_processus)
788: .semaphore_fork)) == -1)
789: {
790: if (errno != EINTR)
791: {
792: (*s_etat_processus).erreur_systeme =
793: d_es_processus;
794: return;
795: }
796: }
797:
798: (*s_etat_processus).erreur_systeme =
799: d_es_erreur_fichier;
800: return;
801: }
802:
803: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
804: {
805: if (errno != EINTR)
806: {
807: (*s_etat_processus).erreur_systeme = d_es_processus;
808: return;
809: }
810: }
811: }
812: else if ((*((struct_socket *) (*s_objet_argument_1).objet))
813: .domaine == PF_INET)
814: {
815: if (sscanf((*((struct_socket *)
816: (*s_objet_argument_1).objet))
817: .adresse_distante, "%d.%d.%d.%d(%d)",
818: &(adresse[0]), &(adresse[1]), &(adresse[2]),
819: &(adresse[3]), &port) == 5)
820: { // Adresse IPv4
821: calcul_adresse = 0;
822: for(i = 0; i < 4; calcul_adresse =
823: (256 * calcul_adresse) + adresse[i++]);
824:
825: memset(&adresse_ipv4, 0, sizeof(adresse_ipv4));
826: adresse_ipv4.sin_family = AF_INET;
827: adresse_ipv4.sin_port = htons(port);
828: adresse_ipv4.sin_addr.s_addr = htonl(calcul_adresse);
829:
830: if (sem_post(&((*s_etat_processus)
831: .semaphore_fork)) != 0)
832: {
833: (*s_etat_processus).erreur_systeme = d_es_processus;
834: return;
835: }
836:
837: if (sendto((*((struct_socket *)
838: (*s_objet_argument_1).objet)).socket, chaine,
839: strlen(chaine), 0, (struct sockaddr *)
840: &adresse_ipv4, sizeof(adresse_ipv4)) < 0)
841: {
842: while(sem_wait(&((*s_etat_processus)
843: .semaphore_fork)) == -1)
844: {
845: if (errno != EINTR)
846: {
847: (*s_etat_processus).erreur_systeme =
848: d_es_processus;
849: return;
850: }
851: }
852:
853: (*s_etat_processus).erreur_systeme =
854: d_es_erreur_fichier;
855: return;
856: }
857:
858: while(sem_wait(&((*s_etat_processus)
859: .semaphore_fork)) == -1)
860: {
861: if (errno != EINTR)
862: {
863: (*s_etat_processus).erreur_systeme =
864: d_es_processus;
865: return;
866: }
867: }
868: }
869: else
870: {
871: liberation(s_etat_processus, s_objet_argument_1);
872: liberation(s_etat_processus, s_objet_argument_2);
873:
874: (*s_etat_processus).erreur_execution =
875: d_ex_erreur_parametre_fichier;
876: return;
877: }
878: }
879: else if ((*((struct_socket *) (*s_objet_argument_1).objet))
880: .domaine == PF_INET6)
881: {
882: if (sscanf((*((struct_socket *) (*s_objet_argument_1)
883: .objet)).adresse_distante, "%X:%X:%X:%X:%X:"
884: "%X:%X:%X:%X:%X:%X:%X:%X:%X:%X:%X(%d)",
885: &(adresse[0]), &(adresse[1]), &(adresse[2]),
886: &(adresse[3]), &(adresse[4]), &(adresse[5]),
887: &(adresse[6]), &(adresse[7]), &(adresse[8]),
888: &(adresse[9]), &(adresse[10]), &(adresse[11]),
889: &(adresse[12]), &(adresse[13]), &(adresse[14]),
890: &(adresse[15]), &port)== 17)
891: { // Adresse IPv6
892: memset(&adresse_ipv6, 0, sizeof(adresse_ipv6));
893: adresse_ipv6.sin6_family = AF_INET6;
894: adresse_ipv6.sin6_port = htons((uint16_t) port);
895:
896: for(i = 0; i < 16;
897: adresse_ipv6.sin6_addr.s6_addr[i] =
898: adresse[i], i++);
899:
900: if (sem_post(&((*s_etat_processus)
901: .semaphore_fork)) != 0)
902: {
903: (*s_etat_processus).erreur_systeme = d_es_processus;
904: return;
905: }
906:
907: if (sendto((*((struct_socket *)
908: (*s_objet_argument_1).objet)).socket, chaine,
909: strlen(chaine), 0, (struct sockaddr *)
910: &adresse_ipv6, sizeof(adresse_ipv6)) < 0)
911: {
912: while(sem_wait(&((*s_etat_processus)
913: .semaphore_fork)) == -1)
914: {
915: if (errno != EINTR)
916: {
917: (*s_etat_processus).erreur_systeme =
918: d_es_processus;
919: return;
920: }
921: }
922:
923: (*s_etat_processus).erreur_systeme =
924: d_es_erreur_fichier;
925: return;
926: }
927:
928: while(sem_wait(&((*s_etat_processus)
929: .semaphore_fork)) == -1)
930: {
931: if (errno != EINTR)
932: {
933: (*s_etat_processus).erreur_systeme =
934: d_es_processus;
935: return;
936: }
937: }
938: }
939: else
940: {
941: liberation(s_etat_processus, s_objet_argument_1);
942: liberation(s_etat_processus, s_objet_argument_2);
943:
944: (*s_etat_processus).erreur_execution =
945: d_ex_erreur_parametre_fichier;
946: return;
947: }
948: }
949: else
950: {
951: liberation(s_etat_processus, s_objet_argument_1);
952: liberation(s_etat_processus, s_objet_argument_2);
953:
954: (*s_etat_processus).erreur_execution =
955: d_ex_erreur_parametre_fichier;
956: return;
957: }
958: }
959:
960: free(chaine);
961: }
962: else if ((*((struct_socket *) (*s_objet_argument_1).objet)).binaire
963: == 'Y')
964: {
965: /*
966: * Sockets non formatées
967: */
968: }
969: else
970: {
971: /*
972: * Sockets de type FLOW
973: */
974: }
975: }
976: else
977: {
978: liberation(s_etat_processus, s_objet_argument_2);
979: liberation(s_etat_processus, s_objet_argument_1);
980:
981: (*s_etat_processus).erreur_execution = d_ex_erreur_type_argument;
982: return;
983: }
984:
985: liberation(s_etat_processus, s_objet_argument_2);
986: liberation(s_etat_processus, s_objet_argument_1);
987:
988: return;
989: }
990:
991:
992: /*
993: ================================================================================
994: Fonction 'wflock'
995: ================================================================================
996: Entrées : pointeur sur une structure struct_processus
997: --------------------------------------------------------------------------------
998: Sorties :
999: --------------------------------------------------------------------------------
1000: Effets de bord : néant
1001: ================================================================================
1002: */
1003:
1004: void
1005: instruction_wflock(struct_processus *s_etat_processus)
1006: {
1007: logical1 drapeau;
1008:
1009: struct flock lock;
1010:
1011: struct timespec attente;
1012:
1013: struct_descripteur_fichier *descripteur;
1014:
1015: struct_objet *s_objet_argument_1;
1016: struct_objet *s_objet_argument_2;
1017:
1018: unsigned char *chaine;
1019: unsigned char registre_instruction_valide;
1020:
1021: attente.tv_sec = 0;
1022: attente.tv_nsec = GRANULARITE_us * 1000;
1023:
1024: (*s_etat_processus).erreur_execution = d_ex;
1025:
1026: if ((*s_etat_processus).affichage_arguments == 'Y')
1027: {
1028: printf("\n WFLOCK ");
1029:
1030: if ((*s_etat_processus).langue == 'F')
1031: {
1032: printf("(attente du positionnement d'un verrou sur un fichier)"
1033: "\n\n");
1034: }
1035: else
1036: {
1037: printf("(wait for file lock)\n\n");
1038: }
1039:
1040: printf(" 2: %s\n", d_FCH);
1041: printf(" 1: %s (READ/WRITE/NONE)\n", d_CHN);
1042:
1043: return;
1044: }
1045: else if ((*s_etat_processus).test_instruction == 'Y')
1046: {
1047: (*s_etat_processus).nombre_arguments = -1;
1048: return;
1049: }
1050:
1051: if (test_cfsf(s_etat_processus, 31) == d_vrai)
1052: {
1053: if (empilement_pile_last(s_etat_processus, 2) == d_erreur)
1054: {
1055: return;
1056: }
1057: }
1058:
1059: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
1060: &s_objet_argument_1) == d_erreur)
1061: {
1062: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
1063: return;
1064: }
1065:
1066: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
1067: &s_objet_argument_2) == d_erreur)
1068: {
1069: liberation(s_etat_processus, s_objet_argument_1);
1070:
1071: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
1072: return;
1073: }
1074:
1075: if (((*s_objet_argument_2).type == FCH) &&
1076: ((*s_objet_argument_1).type == CHN))
1077: {
1078: drapeau = d_faux;
1079:
1080: do
1081: {
1082: if ((chaine = conversion_majuscule((unsigned char *)
1083: (*s_objet_argument_1).objet)) == NULL)
1084: {
1085: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1086: return;
1087: }
1088:
1089: if (strcmp(chaine, "WRITE") == 0)
1090: {
1091: lock.l_type = F_WRLCK;
1092: }
1093: else if (strcmp(chaine, "READ") == 0)
1094: {
1095: lock.l_type = F_RDLCK;
1096: }
1097: else if (strcmp(chaine, "NONE") == 0)
1098: {
1099: lock.l_type = F_UNLCK;
1100: }
1101: else
1102: {
1103: free(chaine);
1104:
1105: liberation(s_etat_processus, s_objet_argument_1);
1106: liberation(s_etat_processus, s_objet_argument_2);
1107:
1108: (*s_etat_processus).erreur_execution = d_ex_verrou_indefini;
1109: return;
1110: }
1111:
1112: free(chaine);
1113:
1114: lock.l_whence = SEEK_SET;
1115: lock.l_start = 0;
1116: lock.l_len = 0;
1117: lock.l_pid = getpid();
1118:
1119: if ((descripteur = descripteur_fichier(s_etat_processus,
1120: (struct_fichier *) (*s_objet_argument_2).objet)) == NULL)
1121: {
1122: return;
1123: }
1124:
1125: if (fcntl(fileno((*descripteur).descripteur_c), F_GETLK, &lock)
1126: == -1)
1127: {
1128: liberation(s_etat_processus, s_objet_argument_1);
1129: liberation(s_etat_processus, s_objet_argument_2);
1130:
1131: (*s_etat_processus).erreur_execution = d_ex_fichier_verrouille;
1132: return;
1133: }
1134:
1135: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
1136: {
1137: (*s_etat_processus).erreur_systeme = d_es_processus;
1138: return;
1139: }
1140:
1141: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
1142: {
1143: if (errno != EINTR)
1144: {
1145: (*s_etat_processus).erreur_systeme = d_es_processus;
1146: return;
1147: }
1148: }
1149:
1150: if (lock.l_type == F_UNLCK)
1151: {
1152: drapeau = d_vrai;
1153: }
1154: else
1155: {
1156: if ((*s_etat_processus).nombre_interruptions_non_affectees != 0)
1157: {
1158: affectation_interruptions_logicielles(s_etat_processus);
1159: }
1160:
1161: if ((*s_etat_processus).nombre_interruptions_en_queue
1162: != 0)
1163: {
1164: registre_instruction_valide =
1165: (*s_etat_processus).instruction_valide;
1166: traitement_interruptions_logicielles(
1167: s_etat_processus);
1168: (*s_etat_processus).instruction_valide =
1169: registre_instruction_valide;
1170: }
1171:
1172: nanosleep(&attente, NULL);
1173: scrutation_injection(s_etat_processus);
1174:
1175: INCR_GRANULARITE(attente.tv_nsec);
1176: }
1177: } while((drapeau == d_faux) && ((*s_etat_processus)
1178: .var_volatile_requete_arret != -1));
1179: }
1180: else
1181: {
1182: liberation(s_etat_processus, s_objet_argument_1);
1183: liberation(s_etat_processus, s_objet_argument_2);
1184:
1185: (*s_etat_processus).erreur_execution = d_ex_erreur_type_argument;
1186: return;
1187: }
1188:
1189: return;
1190: }
1191:
1192:
1193: /*
1194: ================================================================================
1195: Fonction 'wfproc'
1196: ================================================================================
1197: Entrées : pointeur sur une structure struct_processus
1198: --------------------------------------------------------------------------------
1199: Sorties :
1200: --------------------------------------------------------------------------------
1201: Effets de bord : néant
1202: ================================================================================
1203: */
1204:
1205: void
1206: instruction_wfproc(struct_processus *s_etat_processus)
1207: {
1208: logical1 drapeau_fin;
1209:
1210: struct_liste_chainee *l_element_courant;
1211:
1212: struct_objet *s_objet_argument;
1213:
1214: struct timespec attente;
1215:
1216: unsigned char registre_instruction_valide;
1217:
1218: (*s_etat_processus).erreur_execution = d_ex;
1219:
1220: attente.tv_sec = 0;
1221: attente.tv_nsec = GRANULARITE_us * 1000;
1222:
1223: if ((*s_etat_processus).affichage_arguments == 'Y')
1224: {
1225: printf("\n WFPROC ");
1226:
1227: if ((*s_etat_processus).langue == 'F')
1228: {
1229: printf("(attente de la fin d'un processus fils)\n\n");
1230: }
1231: else
1232: {
1233: printf("(wait for child process end)\n\n");
1234: }
1235:
1236: printf(" 1: %s\n", d_PRC);
1237:
1238: return;
1239: }
1240: else if ((*s_etat_processus).test_instruction == 'Y')
1241: {
1242: (*s_etat_processus).nombre_arguments = -1;
1243: return;
1244: }
1245:
1246: if (test_cfsf(s_etat_processus, 31) == d_vrai)
1247: {
1248: if (empilement_pile_last(s_etat_processus, 1) == d_erreur)
1249: {
1250: return;
1251: }
1252: }
1253:
1254: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
1255: &s_objet_argument) == d_erreur)
1256: {
1257: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
1258: return;
1259: }
1260:
1261: if ((*s_objet_argument).type == PRC)
1262: {
1263: drapeau_fin = d_faux;
1264:
1265: if ((*s_etat_processus).profilage == d_vrai)
1266: {
1267: profilage(s_etat_processus, "Interprocess or interthread "
1268: "communications (WFPROC)");
1269:
1270: if ((*s_etat_processus).erreur_systeme != d_es)
1271: {
1272: return;
1273: }
1274: }
1275:
1276: if (pthread_mutex_lock(&((*s_etat_processus).mutex)) != 0)
1277: {
1278: if ((*s_etat_processus).profilage == d_vrai)
1279: {
1280: profilage(s_etat_processus, NULL);
1281: }
1282:
1283: (*s_etat_processus).erreur_systeme = d_es_processus;
1284: return;
1285: }
1286:
1287: while(drapeau_fin == d_faux)
1288: {
1289: l_element_courant = (struct_liste_chainee *)
1290: (*s_etat_processus).l_base_pile_processus;
1291:
1292: while(l_element_courant != NULL)
1293: {
1294: if ((*(*((struct_processus_fils *) (*(*l_element_courant)
1295: .donnee).objet)).thread).processus_detache == d_vrai)
1296: {
1297: if ((*(*((struct_processus_fils *)
1298: (*s_objet_argument).objet)).thread)
1299: .processus_detache == d_vrai)
1300: {
1301: if ((*(*((struct_processus_fils *)
1302: (*(*l_element_courant)
1303: .donnee).objet)).thread).pid ==
1304: (*(*((struct_processus_fils *)
1305: (*s_objet_argument).objet)).thread).pid)
1306: {
1307: break;
1308: }
1309: }
1310: }
1311: else
1312: {
1313: if ((*(*((struct_processus_fils *)
1314: (*s_objet_argument).objet)).thread)
1315: .processus_detache == d_faux)
1316: {
1317: if ((pthread_equal((*(*((struct_processus_fils *)
1318: (*(*l_element_courant).donnee).objet)).thread)
1319: .tid, (*(*((struct_processus_fils *)
1320: (*s_objet_argument).objet)).thread).tid) != 0)
1321: && ((*(*((struct_processus_fils *)
1322: (*(*l_element_courant).donnee).objet)).thread)
1323: .pid == (*(*((struct_processus_fils *)
1324: (*s_objet_argument).objet)).thread).pid))
1325: {
1326: break;
1327: }
1328: }
1329: }
1330:
1331: l_element_courant = (*l_element_courant).suivant;
1332: }
1333:
1334: if ((*s_etat_processus).var_volatile_requete_arret != 0)
1335: {
1336: if ((*s_etat_processus).profilage == d_vrai)
1337: {
1338: profilage(s_etat_processus, NULL);
1339: }
1340:
1341: if (pthread_mutex_unlock(&((*s_etat_processus).mutex)) != 0)
1342: {
1343: (*s_etat_processus).erreur_systeme = d_es_processus;
1344: return;
1345: }
1346:
1347: liberation(s_etat_processus, s_objet_argument);
1348: return;
1349: }
1350:
1351: if (l_element_courant == NULL)
1352: {
1353: /*
1354: * Si l_element_courant vaut NULL, le processus n'existe plus.
1355: */
1356:
1357: drapeau_fin = d_vrai;
1358: }
1359: else
1360: {
1361: if ((*(*((struct_processus_fils *) (*(*l_element_courant)
1362: .donnee).objet)).thread).processus_detache == d_vrai)
1363: {
1364: if (kill((*(*((struct_processus_fils *)
1365: (*(*l_element_courant).donnee).objet)).thread).pid,
1366: 0) != 0)
1367: {
1368: drapeau_fin = d_vrai;
1369: }
1370: else
1371: {
1372: drapeau_fin = d_faux;
1373: }
1374: }
1375: else
1376: {
1377: if (pthread_mutex_lock(&((*(*((struct_processus_fils *)
1378: (*(*l_element_courant).donnee).objet)).thread)
1379: .mutex)) != 0)
1380: {
1381: if ((*s_etat_processus).profilage == d_vrai)
1382: {
1383: profilage(s_etat_processus, NULL);
1384: }
1385:
1386: (*s_etat_processus).erreur_systeme = d_es_processus;
1387: return;
1388: }
1389:
1390: if ((*(*((struct_processus_fils *)
1391: (*(*l_element_courant).donnee).objet)).thread)
1392: .thread_actif == d_faux)
1393: {
1394: drapeau_fin = d_vrai;
1395: }
1396: else
1397: {
1398: drapeau_fin = d_faux;
1399: }
1400:
1401: if (pthread_mutex_unlock(&((*(*((struct_processus_fils *)
1402: (*(*l_element_courant).donnee).objet)).thread)
1403: .mutex)) != 0)
1404: {
1405: if ((*s_etat_processus).profilage == d_vrai)
1406: {
1407: profilage(s_etat_processus, NULL);
1408: }
1409:
1410: (*s_etat_processus).erreur_systeme = d_es_processus;
1411: return;
1412: }
1413: }
1414:
1415: if (drapeau_fin == d_faux)
1416: {
1417: /*
1418: * Le processus n'est pas terminé
1419: */
1420:
1421: if (pthread_mutex_unlock(&((*s_etat_processus).mutex)) != 0)
1422: {
1423: if ((*s_etat_processus).profilage == d_vrai)
1424: {
1425: profilage(s_etat_processus, NULL);
1426: }
1427:
1428: (*s_etat_processus).erreur_systeme =
1429: d_es_processus;
1430: return;
1431: }
1432:
1433: if ((*s_etat_processus).nombre_interruptions_non_affectees
1434: != 0)
1435: {
1436: affectation_interruptions_logicielles(s_etat_processus);
1437: }
1438:
1439: if ((*s_etat_processus).nombre_interruptions_en_queue
1440: != 0)
1441: {
1442: registre_instruction_valide =
1443: (*s_etat_processus).instruction_valide;
1444: traitement_interruptions_logicielles(
1445: s_etat_processus);
1446: (*s_etat_processus).instruction_valide =
1447: registre_instruction_valide;
1448: }
1449:
1450: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
1451: {
1452: (*s_etat_processus).erreur_systeme = d_es_processus;
1453: return;
1454: }
1455:
1456: nanosleep(&attente, NULL);
1457:
1458: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
1459: {
1460: if (errno != EINTR)
1461: {
1462: (*s_etat_processus).erreur_systeme = d_es_processus;
1463: return;
1464: }
1465: }
1466:
1467: scrutation_injection(s_etat_processus);
1468:
1469: if (pthread_mutex_lock(&((*s_etat_processus).mutex)) != 0)
1470: {
1471: if ((*s_etat_processus).profilage == d_vrai)
1472: {
1473: profilage(s_etat_processus, NULL);
1474: }
1475:
1476: (*s_etat_processus).erreur_systeme =
1477: d_es_processus;
1478: return;
1479: }
1480: }
1481: }
1482:
1483: INCR_GRANULARITE(attente.tv_nsec);
1484: }
1485:
1486: if ((*s_etat_processus).profilage == d_vrai)
1487: {
1488: profilage(s_etat_processus, NULL);
1489: }
1490:
1491: if (pthread_mutex_unlock(&((*s_etat_processus).mutex)) != 0)
1492: {
1493: (*s_etat_processus).erreur_systeme = d_es_processus;
1494: return;
1495: }
1496: }
1497: else
1498: {
1499: liberation(s_etat_processus, s_objet_argument);
1500:
1501: (*s_etat_processus).erreur_execution = d_ex_erreur_type_argument;
1502: return;
1503: }
1504:
1505: liberation(s_etat_processus, s_objet_argument);
1506:
1507: return;
1508: }
1509:
1510:
1511: /*
1512: ================================================================================
1513: Fonction 'wfdata'
1514: ================================================================================
1515: Entrées : pointeur sur une structure struct_processus
1516: --------------------------------------------------------------------------------
1517: Sorties :
1518: --------------------------------------------------------------------------------
1519: Effets de bord : néant
1520: ================================================================================
1521: */
1522:
1523: void
1524: instruction_wfdata(struct_processus *s_etat_processus)
1525: {
1526: logical1 drapeau_fin;
1527:
1528: struct_liste_chainee *l_element_courant;
1529:
1530: struct_objet *s_objet_argument;
1531:
1532: struct timespec attente;
1533:
1534: unsigned char registre_instruction_valide;
1535:
1536: (*s_etat_processus).erreur_execution = d_ex;
1537:
1538: attente.tv_sec = 0;
1539: attente.tv_nsec = GRANULARITE_us * 1000;
1540:
1541: if ((*s_etat_processus).affichage_arguments == 'Y')
1542: {
1543: printf("\n WFDATA ");
1544:
1545: if ((*s_etat_processus).langue == 'F')
1546: {
1547: printf("(attente de données d'un processus fils)\n\n");
1548: }
1549: else
1550: {
1551: printf("(wait for data from child process)\n\n");
1552: }
1553:
1554: printf(" 1: %s\n", d_PRC);
1555:
1556: return;
1557: }
1558: else if ((*s_etat_processus).test_instruction == 'Y')
1559: {
1560: (*s_etat_processus).nombre_arguments = -1;
1561: return;
1562: }
1563:
1564: if (test_cfsf(s_etat_processus, 31) == d_vrai)
1565: {
1566: if (empilement_pile_last(s_etat_processus, 1) == d_erreur)
1567: {
1568: return;
1569: }
1570: }
1571:
1572: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
1573: &s_objet_argument) == d_erreur)
1574: {
1575: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
1576: return;
1577: }
1578:
1579: if ((*s_objet_argument).type == PRC)
1580: {
1581: drapeau_fin = d_faux;
1582:
1583: if ((*s_etat_processus).profilage == d_vrai)
1584: {
1585: profilage(s_etat_processus, "Interprocess or interthread "
1586: "communications (WFDATA)");
1587:
1588: if ((*s_etat_processus).erreur_systeme != d_es)
1589: {
1590: return;
1591: }
1592: }
1593:
1594: if (pthread_mutex_lock(&((*s_etat_processus).mutex)) != 0)
1595: {
1596: if ((*s_etat_processus).profilage == d_vrai)
1597: {
1598: profilage(s_etat_processus, NULL);
1599: }
1600:
1601: (*s_etat_processus).erreur_systeme = d_es_processus;
1602: return;
1603: }
1604:
1605: while(drapeau_fin == d_faux)
1606: {
1607: l_element_courant = (struct_liste_chainee *)
1608: (*s_etat_processus).l_base_pile_processus;
1609:
1610: while(l_element_courant != NULL)
1611: {
1612: if ((*(*((struct_processus_fils *) (*(*l_element_courant)
1613: .donnee).objet)).thread).processus_detache == d_vrai)
1614: {
1615: if (((*(*((struct_processus_fils *) (*(*l_element_courant)
1616: .donnee).objet)).thread).pid ==
1617: (*(*((struct_processus_fils *)
1618: (*s_objet_argument).objet)).thread).pid)
1619: && ((*(*((struct_processus_fils *)
1620: (*s_objet_argument).objet)).thread)
1621: .processus_detache == d_vrai))
1622: {
1623: break;
1624: }
1625: }
1626: else
1627: {
1628: if ((pthread_equal((*(*((struct_processus_fils *)
1629: (*(*l_element_courant).donnee).objet)).thread).tid,
1630: (*(*((struct_processus_fils *) (*s_objet_argument)
1631: .objet)).thread).tid) != 0) &&
1632: ((*(*((struct_processus_fils *)
1633: (*(*l_element_courant).donnee).objet)).thread).pid
1634: == (*(*((struct_processus_fils *)
1635: (*s_objet_argument).objet)).thread).pid) &&
1636: ((*(*((struct_processus_fils *)
1637: (*s_objet_argument).objet)).thread)
1638: .processus_detache == d_faux))
1639: {
1640: break;
1641: }
1642: }
1643:
1644: l_element_courant = (*l_element_courant).suivant;
1645: }
1646:
1647: if ((*s_etat_processus).var_volatile_requete_arret != 0)
1648: {
1649: if ((*s_etat_processus).profilage == d_vrai)
1650: {
1651: profilage(s_etat_processus, NULL);
1652: }
1653:
1654: if (pthread_mutex_unlock(&((*s_etat_processus).mutex)) != 0)
1655: {
1656: (*s_etat_processus).erreur_systeme = d_es_processus;
1657: return;
1658: }
1659:
1660: liberation(s_etat_processus, s_objet_argument);
1661: return;
1662: }
1663:
1664: if (l_element_courant != NULL)
1665: {
1666: if (pthread_mutex_lock(&((*(*((struct_processus_fils *)
1667: (*(*l_element_courant).donnee).objet)).thread).mutex))
1668: != 0)
1669: {
1670: (*s_etat_processus).erreur_systeme = d_es_processus;
1671: return;
1672: }
1673:
1674: if ((*(*((struct_processus_fils *) (*(*l_element_courant)
1675: .donnee).objet)).thread).nombre_objets_dans_pipe != 0)
1676: {
1677: if (pthread_mutex_unlock(&((*(*((struct_processus_fils *)
1678: (*(*l_element_courant).donnee).objet)).thread)
1679: .mutex)) != 0)
1680: {
1681: (*s_etat_processus).erreur_systeme = d_es_processus;
1682: return;
1683: }
1684:
1685: drapeau_fin = d_vrai;
1686: }
1687: else
1688: {
1689: if (pthread_mutex_unlock(&((*(*((struct_processus_fils *)
1690: (*(*l_element_courant).donnee).objet)).thread)
1691: .mutex)) != 0)
1692: {
1693: (*s_etat_processus).erreur_systeme = d_es_processus;
1694: return;
1695: }
1696:
1697: if (pthread_mutex_unlock(&((*s_etat_processus).mutex)) != 0)
1698: {
1699: if ((*s_etat_processus).profilage == d_vrai)
1700: {
1701: profilage(s_etat_processus, NULL);
1702: }
1703:
1704: (*s_etat_processus).erreur_systeme =
1705: d_es_processus;
1706: return;
1707: }
1708:
1709: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
1710: {
1711: (*s_etat_processus).erreur_systeme = d_es_processus;
1712: return;
1713: }
1714:
1715: nanosleep(&attente, NULL);
1716:
1717: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
1718: {
1719: if (errno != EINTR)
1720: {
1721: (*s_etat_processus).erreur_systeme = d_es_processus;
1722: return;
1723: }
1724: }
1725:
1726: scrutation_injection(s_etat_processus);
1727:
1728: if ((*s_etat_processus).nombre_interruptions_non_affectees
1729: != 0)
1730: {
1731: affectation_interruptions_logicielles(s_etat_processus);
1732: }
1733:
1734: if ((*s_etat_processus).nombre_interruptions_en_queue != 0)
1735: {
1736: registre_instruction_valide =
1737: (*s_etat_processus).instruction_valide;
1738: traitement_interruptions_logicielles(s_etat_processus);
1739: (*s_etat_processus).instruction_valide =
1740: registre_instruction_valide;
1741: }
1742:
1743: if ((*s_etat_processus).var_volatile_requete_arret != 0)
1744: {
1745: if ((*s_etat_processus).profilage == d_vrai)
1746: {
1747: profilage(s_etat_processus, NULL);
1748: }
1749:
1750: return;
1751: }
1752:
1753: if (pthread_mutex_lock(&((*s_etat_processus).mutex)) != 0)
1754: {
1755: if ((*s_etat_processus).profilage == d_vrai)
1756: {
1757: profilage(s_etat_processus, NULL);
1758: }
1759:
1760: (*s_etat_processus).erreur_systeme =
1761: d_es_processus;
1762: return;
1763: }
1764: }
1765: }
1766: else
1767: {
1768: drapeau_fin = d_vrai;
1769: (*s_etat_processus).erreur_execution = d_ex_processus;
1770: }
1771:
1772: INCR_GRANULARITE(attente.tv_nsec);
1773: }
1774:
1775: if ((*s_etat_processus).profilage == d_vrai)
1776: {
1777: profilage(s_etat_processus, NULL);
1778: }
1779:
1780: if (pthread_mutex_unlock(&((*s_etat_processus).mutex)) != 0)
1781: {
1782: (*s_etat_processus).erreur_systeme = d_es_processus;
1783: return;
1784: }
1785: }
1786: else
1787: {
1788: liberation(s_etat_processus, s_objet_argument);
1789:
1790: (*s_etat_processus).erreur_execution = d_ex_erreur_type_argument;
1791: return;
1792: }
1793:
1794: liberation(s_etat_processus, s_objet_argument);
1795:
1796: return;
1797: }
1798:
1799:
1800: /*
1801: ================================================================================
1802: Fonction 'wfsock'
1803: ================================================================================
1804: Entrées : pointeur sur une structure struct_processus
1805: --------------------------------------------------------------------------------
1806: Sorties :
1807: --------------------------------------------------------------------------------
1808: Effets de bord : néant
1809: ================================================================================
1810: */
1811:
1812: void
1813: instruction_wfsock(struct_processus *s_etat_processus)
1814: {
1815: int erreur;
1816:
1817: logical1 drapeau;
1818:
1819: socklen_t longueur;
1820:
1821: struct_liste_chainee *l_element_courant;
1822:
1823: struct_objet *s_objet_argument;
1824: struct_objet *s_objet_resultat;
1825:
1826: struct sockaddr_in adresse_ipv4;
1827: struct sockaddr_in6 adresse_ipv6;
1828:
1829: unsigned long i;
1830:
1831: if ((*s_etat_processus).affichage_arguments == 'Y')
1832: {
1833: printf("\n WFSOCK ");
1834:
1835: if ((*s_etat_processus).langue == 'F')
1836: {
1837: printf("(attente d'une connexion sur une socket)\n\n");
1838: }
1839: else
1840: {
1841: printf("(wait for connection on a socket)\n\n");
1842: }
1843:
1844: printf(" 1: %s\n", d_SCK);
1845: printf("-> 2: %s\n", d_SCK);
1846: printf(" 1: %s\n", d_SCK);
1847:
1848: return;
1849: }
1850: else if ((*s_etat_processus).test_instruction == 'Y')
1851: {
1852: (*s_etat_processus).nombre_arguments = -1;
1853: return;
1854: }
1855:
1856: if (test_cfsf(s_etat_processus, 31) == d_vrai)
1857: {
1858: if (empilement_pile_last(s_etat_processus, 1) == d_erreur)
1859: {
1860: return;
1861: }
1862: }
1863:
1864: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
1865: &s_objet_argument) == d_erreur)
1866: {
1867: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
1868: return;
1869: }
1870:
1871: if ((*s_objet_argument).type == SCK)
1872: {
1873: if ((strcmp((*((struct_socket *) (*s_objet_argument).objet)).type,
1874: "STREAM") != 0) && (strcmp((*((struct_socket *)
1875: (*s_objet_argument).objet)).type, "SEQUENTIAL DATAGRAM") != 0))
1876: {
1877: liberation(s_etat_processus, s_objet_argument);
1878:
1879: (*s_etat_processus).erreur_execution = d_ex_erreur_acces_fichier;
1880: return;
1881: }
1882:
1883: if ((s_objet_resultat = copie_objet(s_etat_processus, s_objet_argument,
1884: 'O')) == NULL)
1885: {
1886: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1887: return;
1888: }
1889:
1890: (*((struct_socket *) (*s_objet_resultat).objet)).socket_en_ecoute = 'N';
1891: (*((struct_socket *) (*s_objet_resultat).objet)).effacement = 'N';
1892:
1893: if ((*((struct_socket *) (*s_objet_resultat).objet)).domaine == PF_INET)
1894: {
1895: longueur = sizeof(adresse_ipv4);
1896:
1897: do
1898: {
1899: drapeau = d_vrai;
1900:
1901: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
1902: {
1903: (*s_etat_processus).erreur_systeme = d_es_processus;
1904: return;
1905: }
1906:
1907: if (((*((struct_socket *) (*s_objet_resultat).objet)).socket =
1908: accept((*((struct_socket *) (*s_objet_argument).objet))
1909: .socket, (struct sockaddr *) &adresse_ipv4, &longueur))
1910: < 0)
1911: {
1912: erreur = errno;
1913:
1914: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
1915: {
1916: if (errno != EINTR)
1917: {
1918: (*s_etat_processus).erreur_systeme = d_es_processus;
1919: return;
1920: }
1921: }
1922:
1923: if (erreur != EINTR)
1924: {
1925: liberation(s_etat_processus, s_objet_argument);
1926: liberation(s_etat_processus, s_objet_resultat);
1927:
1928: (*s_etat_processus).erreur_execution =
1929: d_ex_erreur_acces_fichier;
1930: return;
1931: }
1932:
1933: scrutation_injection(s_etat_processus);
1934:
1935: if ((*s_etat_processus).var_volatile_requete_arret != 0)
1936: {
1937: drapeau = d_vrai;
1938: }
1939: else
1940: {
1941: drapeau = d_faux;
1942: }
1943: }
1944: else
1945: {
1946: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
1947: {
1948: if (errno != EINTR)
1949: {
1950: (*s_etat_processus).erreur_systeme = d_es_processus;
1951: return;
1952: }
1953: }
1954: }
1955: } while(drapeau == d_faux);
1956:
1957: if (((*((struct_socket *) (*s_objet_resultat).objet))
1958: .adresse_distante = malloc(22 *
1959: sizeof(unsigned char))) == NULL)
1960: {
1961: (*s_etat_processus).erreur_systeme =
1962: d_es_allocation_memoire;
1963: return;
1964: }
1965:
1966: sprintf((*((struct_socket *) (*s_objet_resultat).objet))
1967: .adresse_distante, "%d.%d.%d.%d(%d)",
1968: (ntohl(adresse_ipv4.sin_addr.s_addr) >> 24) & 0xFF,
1969: (ntohl(adresse_ipv4.sin_addr.s_addr) >> 16) & 0xFF,
1970: (ntohl(adresse_ipv4.sin_addr.s_addr) >> 8) & 0xFF,
1971: ntohl(adresse_ipv4.sin_addr.s_addr) & 0xFF,
1972: ntohs(adresse_ipv4.sin_port));
1973: }
1974: else if ((*((struct_socket *) (*s_objet_resultat).objet)).domaine ==
1975: PF_INET6)
1976: {
1977: longueur = sizeof(adresse_ipv6);
1978:
1979: do
1980: {
1981: drapeau = d_vrai;
1982:
1983: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
1984: {
1985: (*s_etat_processus).erreur_systeme = d_es_processus;
1986: return;
1987: }
1988:
1989: if (((*((struct_socket *) (*s_objet_resultat).objet)).socket =
1990: accept((*((struct_socket *) (*s_objet_argument).objet))
1991: .socket, (struct sockaddr *) &adresse_ipv6, &longueur))
1992: < 0)
1993: {
1994: erreur = errno;
1995:
1996: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
1997: {
1998: if (errno != EINTR)
1999: {
2000: (*s_etat_processus).erreur_systeme = d_es_processus;
2001: return;
2002: }
2003: }
2004:
2005: if (erreur != EINTR)
2006: {
2007: liberation(s_etat_processus, s_objet_argument);
2008: liberation(s_etat_processus, s_objet_resultat);
2009:
2010: (*s_etat_processus).erreur_execution =
2011: d_ex_erreur_acces_fichier;
2012: return;
2013: }
2014:
2015: scrutation_injection(s_etat_processus);
2016:
2017: if ((*s_etat_processus).var_volatile_requete_arret != 0)
2018: {
2019: drapeau = d_vrai;
2020: }
2021: else
2022: {
2023: drapeau = d_faux;
2024: }
2025: }
2026: else
2027: {
2028: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
2029: {
2030: if (errno != EINTR)
2031: {
2032: (*s_etat_processus).erreur_systeme = d_es_processus;
2033: return;
2034: }
2035: }
2036: }
2037: } while(drapeau == d_faux);
2038:
2039: if (((*((struct_socket *) (*s_objet_resultat).objet))
2040: .adresse_distante = malloc(55 *
2041: sizeof(unsigned char))) == NULL)
2042: {
2043: (*s_etat_processus).erreur_systeme =
2044: d_es_allocation_memoire;
2045: return;
2046: }
2047:
2048: (*((struct_socket *) (*s_objet_resultat).objet))
2049: .adresse_distante = d_code_fin_chaine;
2050:
2051: for(i = 0; i < 16; i++)
2052: {
2053: sprintf((*((struct_socket *) (*s_objet_resultat)
2054: .objet)).adresse_distante, (i == 0) ? "%s%X" : "%s:%X",
2055: (*((struct_socket *) (*s_objet_resultat)
2056: .objet)).adresse_distante,
2057: adresse_ipv6.sin6_addr.s6_addr[i]);
2058: }
2059:
2060: sprintf((*((struct_socket *) (*s_objet_resultat)
2061: .objet)).adresse_distante, "%s(%u)",
2062: (*((struct_socket *) (*s_objet_resultat)
2063: .objet)).adresse_distante, ntohs(adresse_ipv6.sin6_port));
2064: }
2065: else
2066: {
2067: longueur = 0;
2068:
2069: do
2070: {
2071: drapeau = d_vrai;
2072:
2073: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
2074: {
2075: (*s_etat_processus).erreur_systeme = d_es_processus;
2076: return;
2077: }
2078:
2079: if (((*((struct_socket *) (*s_objet_resultat).objet)).socket =
2080: accept((*((struct_socket *) (*s_objet_argument).objet))
2081: .socket, NULL, &longueur)) < 0)
2082: {
2083: erreur = errno;
2084:
2085: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
2086: {
2087: if (errno != EINTR)
2088: {
2089: (*s_etat_processus).erreur_systeme = d_es_processus;
2090: return;
2091: }
2092: }
2093:
2094: if (erreur != EINTR)
2095: {
2096: liberation(s_etat_processus, s_objet_argument);
2097: liberation(s_etat_processus, s_objet_resultat);
2098:
2099: (*s_etat_processus).erreur_execution =
2100: d_ex_erreur_acces_fichier;
2101: return;
2102: }
2103:
2104: scrutation_injection(s_etat_processus);
2105:
2106: if ((*s_etat_processus).var_volatile_requete_arret != 0)
2107: {
2108: drapeau = d_vrai;
2109: }
2110: else
2111: {
2112: drapeau = d_faux;
2113: }
2114: }
2115: else
2116: {
2117: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
2118: {
2119: if (errno != EINTR)
2120: {
2121: (*s_etat_processus).erreur_systeme = d_es_processus;
2122: return;
2123: }
2124: }
2125: }
2126: } while(drapeau == d_faux);
2127: }
2128:
2129: // Si accept() renvoie une erreur non récupérée, il ne peut s'agir
2130: // que de EINTR sachant qu'une requête d'arrêt est en court de
2131: // traitement.
2132:
2133: if ((*((struct_socket *) (*s_objet_resultat).objet)).socket >= 0)
2134: {
2135: l_element_courant = (*s_etat_processus).s_sockets;
2136:
2137: if (l_element_courant == NULL)
2138: {
2139: if (((*s_etat_processus).s_sockets =
2140: allocation_maillon(s_etat_processus)) == NULL)
2141: {
2142: (*s_etat_processus).erreur_systeme =
2143: d_es_allocation_memoire;
2144: return;
2145: }
2146:
2147: (*(*s_etat_processus).s_sockets).suivant = NULL;
2148: l_element_courant = (*s_etat_processus).s_sockets;
2149: }
2150: else
2151: {
2152: /*
2153: * Ajout d'un élément à la fin de la liste chaînée
2154: */
2155:
2156: while((*l_element_courant).suivant != NULL)
2157: {
2158: l_element_courant = (*l_element_courant).suivant;
2159: }
2160:
2161: if (((*l_element_courant).suivant =
2162: allocation_maillon(s_etat_processus)) == NULL)
2163: {
2164: (*s_etat_processus).erreur_systeme =
2165: d_es_allocation_memoire;
2166: return;
2167: }
2168:
2169: l_element_courant = (*l_element_courant).suivant;
2170: (*l_element_courant).suivant = NULL;
2171: }
2172:
2173: if (((*l_element_courant).donnee = copie_objet(s_etat_processus,
2174: s_objet_resultat, 'O')) == NULL)
2175: {
2176: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
2177: return;
2178: }
2179: }
2180:
2181: if (empilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
2182: s_objet_argument) == d_erreur)
2183: {
2184: return;
2185: }
2186:
2187: if (empilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
2188: s_objet_resultat) == d_erreur)
2189: {
2190: return;
2191: }
2192: }
2193: else
2194: {
2195: liberation(s_etat_processus, s_objet_argument);
2196:
2197: (*s_etat_processus).erreur_execution = d_ex_erreur_type_argument;
2198: return;
2199: }
2200:
2201: return;
2202: }
2203:
2204:
2205: /*
2206: ================================================================================
2207: Fonction 'wfswi'
2208: ================================================================================
2209: Entrées : pointeur sur une structure struct_processus
2210: --------------------------------------------------------------------------------
2211: Sorties :
2212: --------------------------------------------------------------------------------
2213: Effets de bord : néant
2214: ================================================================================
2215: */
2216:
2217: void
2218: instruction_wfswi(struct_processus *s_etat_processus)
2219: {
2220: integer8 interruption;
2221:
2222: logical1 drapeau_fin;
2223:
2224: struct_objet *s_objet_argument;
2225:
2226: struct timespec attente;
2227:
2228: (*s_etat_processus).erreur_execution = d_ex;
2229:
2230: attente.tv_sec = 0;
2231: attente.tv_nsec = GRANULARITE_us * 1000;
2232:
2233: if ((*s_etat_processus).affichage_arguments == 'Y')
2234: {
2235: printf("\n WFSWI ");
2236:
2237: if ((*s_etat_processus).langue == 'F')
2238: {
2239: printf("(attente d'une interruption)\n\n");
2240: }
2241: else
2242: {
2243: printf("(wait for interrupt)\n\n");
2244: }
2245:
2246: printf(" 1: %s\n", d_INT);
2247:
2248: return;
2249: }
2250: else if ((*s_etat_processus).test_instruction == 'Y')
2251: {
2252: (*s_etat_processus).nombre_arguments = -1;
2253: return;
2254: }
2255:
2256: if (test_cfsf(s_etat_processus, 31) == d_vrai)
2257: {
2258: if (empilement_pile_last(s_etat_processus, 1) == d_erreur)
2259: {
2260: return;
2261: }
2262: }
2263:
2264: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
2265: &s_objet_argument) == d_erreur)
2266: {
2267: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
2268: return;
2269: }
2270:
2271: if ((*s_objet_argument).type == INT)
2272: {
2273: drapeau_fin = d_faux;
2274:
2275: interruption = (*((integer8 *) (*s_objet_argument).objet));
2276:
2277: if ((interruption < 1) || (interruption > d_NOMBRE_INTERRUPTIONS))
2278: {
2279: liberation(s_etat_processus, s_objet_argument);
2280:
2281: (*s_etat_processus).erreur_execution = d_ex_interruption_invalide;
2282: return;
2283: }
2284:
2285: while(drapeau_fin == d_faux)
2286: {
2287: if ((*s_etat_processus).var_volatile_requete_arret != 0)
2288: {
2289: liberation(s_etat_processus, s_objet_argument);
2290: return;
2291: }
2292:
2293: if ((*s_etat_processus).nombre_interruptions_non_affectees != 0)
2294: {
2295: affectation_interruptions_logicielles(s_etat_processus);
2296: }
2297:
2298: if ((*s_etat_processus).queue_interruptions[interruption - 1] > 0)
2299: {
2300: drapeau_fin = d_vrai;
2301: }
2302: else
2303: {
2304: nanosleep(&attente, NULL);
2305: scrutation_injection(s_etat_processus);
2306: INCR_GRANULARITE(attente.tv_nsec);
2307: }
2308: }
2309: }
2310: else
2311: {
2312: liberation(s_etat_processus, s_objet_argument);
2313:
2314: (*s_etat_processus).erreur_execution = d_ex_erreur_type_argument;
2315: return;
2316: }
2317:
2318: liberation(s_etat_processus, s_objet_argument);
2319:
2320: return;
2321: }
2322:
2323:
2324: /*
2325: ================================================================================
2326: Fonction 'wfpoke'
2327: ================================================================================
2328: Entrées : pointeur sur une structure struct_processus
2329: --------------------------------------------------------------------------------
2330: Sorties :
2331: --------------------------------------------------------------------------------
2332: Effets de bord : néant
2333: ================================================================================
2334: */
2335:
2336: void
2337: instruction_wfpoke(struct_processus *s_etat_processus)
2338: {
2339: struct timespec attente;
2340:
2341: unsigned char registre_instruction_valide;
2342:
2343: (*s_etat_processus).erreur_execution = d_ex;
2344:
2345: attente.tv_sec = 0;
2346: attente.tv_nsec = GRANULARITE_us * 1000;
2347:
2348: if ((*s_etat_processus).affichage_arguments == 'Y')
2349: {
2350: printf("\n WFPOKE ");
2351:
2352: if ((*s_etat_processus).langue == 'F')
2353: {
2354: printf("(attente de données en provenance du processus père)\n\n");
2355: printf(" Aucun argument\n");
2356: }
2357: else
2358: {
2359: printf("(wait for data from parent process)\n\n");
2360: printf(" No argument\n");
2361: }
2362:
2363: return;
2364: }
2365: else if ((*s_etat_processus).test_instruction == 'Y')
2366: {
2367: (*s_etat_processus).nombre_arguments = -1;
2368: return;
2369: }
2370:
2371: if (test_cfsf(s_etat_processus, 31) == d_vrai)
2372: {
2373: if (empilement_pile_last(s_etat_processus, 0) == d_erreur)
2374: {
2375: return;
2376: }
2377: }
2378:
2379: if ((*s_etat_processus).presence_pipes == d_faux)
2380: {
2381: (*s_etat_processus).erreur_execution = d_ex_absence_processus_pere;
2382: return;
2383: }
2384:
2385: if ((*s_etat_processus).nombre_objets_injectes > 0)
2386: {
2387: return;
2388: }
2389:
2390: if ((*s_etat_processus).profilage == d_vrai)
2391: {
2392: profilage(s_etat_processus, "Interprocess or interthread "
2393: "communications (WFPOKE)");
2394:
2395: if ((*s_etat_processus).erreur_systeme != d_es)
2396: {
2397: return;
2398: }
2399: }
2400:
2401: do
2402: {
2403: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
2404: {
2405: (*s_etat_processus).erreur_systeme = d_es_processus;
2406: return;
2407: }
2408:
2409: nanosleep(&attente, NULL);
2410:
2411: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
2412: {
2413: if (errno != EINTR)
2414: {
2415: (*s_etat_processus).erreur_systeme = d_es_processus;
2416: return;
2417: }
2418: }
2419:
2420: scrutation_injection(s_etat_processus);
2421:
2422: if ((*s_etat_processus).nombre_interruptions_non_affectees != 0)
2423: {
2424: affectation_interruptions_logicielles(s_etat_processus);
2425: }
2426:
2427: if ((*s_etat_processus).nombre_interruptions_en_queue != 0)
2428: {
2429: registre_instruction_valide =
2430: (*s_etat_processus).instruction_valide;
2431: traitement_interruptions_logicielles(s_etat_processus);
2432: (*s_etat_processus).instruction_valide =
2433: registre_instruction_valide;
2434: }
2435:
2436: if ((*s_etat_processus).var_volatile_requete_arret != 0)
2437: {
2438: if ((*s_etat_processus).profilage == d_vrai)
2439: {
2440: profilage(s_etat_processus, NULL);
2441: }
2442:
2443: return;
2444: }
2445:
2446: INCR_GRANULARITE(attente.tv_nsec);
2447: } while((*s_etat_processus).nombre_objets_injectes == 0);
2448:
2449: return;
2450: }
2451:
2452:
2453: /*
2454: ================================================================================
2455: Fonction 'wfack'
2456: ================================================================================
2457: Entrées : pointeur sur une structure struct_processus
2458: --------------------------------------------------------------------------------
2459: Sorties :
2460: --------------------------------------------------------------------------------
2461: Effets de bord : néant
2462: ================================================================================
2463: */
2464:
2465: void
2466: instruction_wfack(struct_processus *s_etat_processus)
2467: {
2468: struct timespec attente;
2469:
2470: unsigned char registre_instruction_valide;
2471:
2472: (*s_etat_processus).erreur_execution = d_ex;
2473:
2474: attente.tv_sec = 0;
2475: attente.tv_nsec = GRANULARITE_us * 1000;
2476:
2477: if ((*s_etat_processus).affichage_arguments == 'Y')
2478: {
2479: printf("\n WFACK ");
2480:
2481: if ((*s_etat_processus).langue == 'F')
2482: {
2483: printf("(attente des acquittements de lecture)\n\n");
2484: printf(" Aucun argument\n");
2485: }
2486: else
2487: {
2488: printf("(wait for reading of data acknowledgement)\n\n");
2489: printf(" No argument\n");
2490: }
2491:
2492: return;
2493: }
2494: else if ((*s_etat_processus).test_instruction == 'Y')
2495: {
2496: (*s_etat_processus).nombre_arguments = -1;
2497: return;
2498: }
2499:
2500: if (test_cfsf(s_etat_processus, 31) == d_vrai)
2501: {
2502: if (empilement_pile_last(s_etat_processus, 0) == d_erreur)
2503: {
2504: return;
2505: }
2506: }
2507:
2508: if ((*s_etat_processus).presence_pipes == d_faux)
2509: {
2510: (*s_etat_processus).erreur_execution = d_ex_absence_processus_pere;
2511: return;
2512: }
2513:
2514: if ((*s_etat_processus).profilage == d_vrai)
2515: {
2516: profilage(s_etat_processus, "Interprocess or interthread communications"
2517: " (WFACK)");
2518:
2519: if ((*s_etat_processus).erreur_systeme != d_es)
2520: {
2521: return;
2522: }
2523: }
2524:
2525: while((*s_etat_processus).nombre_objets_envoyes_non_lus != 0)
2526: {
2527: scrutation_injection(s_etat_processus);
2528:
2529: if ((*s_etat_processus).nombre_interruptions_non_affectees != 0)
2530: {
2531: affectation_interruptions_logicielles(s_etat_processus);
2532: }
2533:
2534: if ((*s_etat_processus).nombre_interruptions_en_queue != 0)
2535: {
2536: registre_instruction_valide =
2537: (*s_etat_processus).instruction_valide;
2538: traitement_interruptions_logicielles(s_etat_processus);
2539: (*s_etat_processus).instruction_valide =
2540: registre_instruction_valide;
2541: }
2542:
2543: if ((*s_etat_processus).var_volatile_requete_arret != 0)
2544: {
2545: if ((*s_etat_processus).profilage == d_vrai)
2546: {
2547: profilage(s_etat_processus, NULL);
2548: }
2549:
2550: return;
2551: }
2552:
2553: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
2554: {
2555: (*s_etat_processus).erreur_systeme = d_es_processus;
2556: return;
2557: }
2558:
2559: nanosleep(&attente, NULL);
2560: INCR_GRANULARITE(attente.tv_nsec);
2561:
2562: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
2563: {
2564: if (errno != EINTR)
2565: {
2566: (*s_etat_processus).erreur_systeme = d_es_processus;
2567: return;
2568: }
2569: }
2570: }
2571:
2572: if ((*s_etat_processus).profilage == d_vrai)
2573: {
2574: profilage(s_etat_processus, NULL);
2575: }
2576:
2577: return;
2578: }
2579:
2580: // vim: ts=4
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