version 1.22, 2010/06/17 11:00:23
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version 1.33, 2010/08/22 16:38:36
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/* |
/* |
================================================================================ |
================================================================================ |
RPL/2 (R) version 4.0.16 |
RPL/2 (R) version 4.0.18 |
Copyright (C) 1989-2010 Dr. BERTRAND Joël |
Copyright (C) 1989-2010 Dr. BERTRAND Joël |
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This file is part of RPL/2. |
This file is part of RPL/2. |
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*/ |
*/ |
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#include "rpl.conv.h" |
#include "rpl-conv.h" |
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/* |
/* |
Line 1724 deverrouillage_gestionnaire_signaux()
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Line 1724 deverrouillage_gestionnaire_signaux()
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return; |
return; |
} |
} |
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#ifdef _BROKEN_SIGINFO |
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// Remplacer les mutexes par des sémaphores SysV |
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#define longueur_queue 256 |
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#define nombre_queues 13 |
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static int *fifos; |
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static int segment; |
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static sem_t *semaphores[nombre_queues]; |
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static sem_t *semaphore_global; |
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#ifdef IPCS_SYSV |
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static unsigned char *chemin = NULL; |
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#endif |
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unsigned char * |
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nom_segment(unsigned char *chemin, pid_t pid) |
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{ |
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unsigned char *fichier; |
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# ifdef IPCS_SYSV |
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if ((fichier = malloc((strlen(chemin) + 1 + 256 + 1) * |
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sizeof(unsigned char))) == NULL) |
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{ |
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return(NULL); |
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} |
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sprintf(fichier, "%s/RPL-SIGQUEUES-%d", chemin, (int) pid); |
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# else |
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if ((fichier = malloc((1 + 256 + 1) * |
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sizeof(unsigned char))) == NULL) |
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{ |
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return(NULL); |
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} |
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sprintf(fichier, "/RPL-SIGQUEUES-%d", (int) pid); |
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# endif |
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return(fichier); |
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} |
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unsigned char * |
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nom_semaphore(pid_t pid, int queue) |
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{ |
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unsigned char *fichier; |
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if ((fichier = malloc((256 + 1) * sizeof(unsigned char))) == NULL) |
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{ |
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return(NULL); |
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} |
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sprintf(fichier, "/RPL-SIGESMAPHORES-%d-%d", (int) pid, queue); |
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return(fichier); |
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} |
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inline int |
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queue_de_signal(int signal) |
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{ |
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switch(signal) |
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{ |
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case SIGINT: |
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return(0); |
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case SIGTSTP: |
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return(1); |
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case SIGCONT: |
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return(2); |
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case SIGURG: |
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return(3); |
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case SIGPIPE: |
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return(4); |
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case SIGALRM: |
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return(5); |
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case SIGFSTOP: |
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return(6); |
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case SIGSTART: |
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return(7); |
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case SIGINJECT: |
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return(8); |
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case SIGABORT: |
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return(9); |
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case SIGFABORT: |
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return(10); |
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case SIGSEGV: |
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return(11); |
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case SIGBUS: |
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return(12); |
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} |
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return(-1); |
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} |
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void |
void |
interruption1(int signal, siginfo_t *siginfo, void *context) |
creation_fifos_signaux(struct_processus *s_etat_processus) |
{ |
{ |
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/* |
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* Signaux utilisés |
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* SIGINT, SIGTSTP, SIGCONT, SIGURG, SIGPIPE, SIGALRM, SIGFSTOP, |
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* SIGSTART, SIGINJECT, SIGABORT, SIGFABORT |
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*/ |
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# ifndef IPCS_SYSV // POSIX |
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# else // SystemV |
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file *desc; |
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int i; |
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key_t clef; |
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unsigned char *nom; |
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// Création d'un segment de données associé au PID du processus courant |
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chemin = (*s_etat_processus).chemin_fichiers_temporaires; |
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if ((nom = nom_segment((*s_etat_processus).chemin_fichiers_temporaires, |
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getpid())) == NULL) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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if ((desc = fopen(nom, "w")) == NULL) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_erreur_fichier; |
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return; |
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} |
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fclose(desc); |
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if ((clef = ftok(nom, 1)) == -1) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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free(nom); |
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if ((segment = shmget(clef, |
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nombre_queues * (longueur_queue + 4) * sizeof(int), |
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IPC_CREAT | IPC_EXCL | S_IRUSR | S_IWUSR)) == -1) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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fifos = shmat(segment, NULL, 0); |
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if (((void *) fifos) == ((void *) -1)) |
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{ |
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if (shmctl(segment, IPC_RMID, 0) == -1) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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# endif |
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/* |
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* Structure d'une queue |
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* 0 : pointeur en lecture sur le premier emplacement libre (int) |
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* 1 : pointeur en écriture sur le premier emplacement à lire (int) |
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* 2 : longueur de la queue (int) |
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* 3 : éléments restants (int) |
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* 4 à 4 + (2) : queue (int) |
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*/ |
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for(i = 0; i < nombre_queues; i++) |
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{ |
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fifos[(i * (longueur_queue + 4))] = 0; |
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fifos[(i * (longueur_queue + 4)) + 1] = 0; |
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fifos[(i * (longueur_queue + 4)) + 2] = longueur_queue; |
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fifos[(i * (longueur_queue + 4)) + 3] = longueur_queue; |
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} |
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// Création des sémaphores : un sémaphore par signal et par queue |
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// plus un sémaphore global pour tous les threads. |
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for(i = 0; i < nombre_queues; i++) |
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{ |
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if ((nom = nom_semaphore(getpid(), i)) == NULL) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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// Le sémaphore est créé en écrasant si nécessaire un sémaphore |
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// préexistant. Comme le nom du sémaphore contient l'identifiant du |
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// processus, il est anormal d'avoir un sémaphore de même nom |
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// préexistant. |
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if ((semaphores[i] = sem_open(nom, O_CREAT, S_IRUSR | S_IWUSR, |
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1)) == SEM_FAILED) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_semaphore; |
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return; |
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} |
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free(nom); |
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} |
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if ((nom = nom_semaphore(getpid(), nombre_queues)) == NULL) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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if ((semaphore_global = sem_open(nom, O_CREAT, S_IRUSR | S_IWUSR, |
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1)) == SEM_FAILED) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_semaphore; |
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return; |
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} |
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free(nom); |
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return; |
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} |
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void |
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liberation_fifos_signaux(struct_processus *s_etat_processus) |
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{ |
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int i; |
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if (shmdt(fifos) == -1) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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for(i = 0; i < nombre_queues; i++) |
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{ |
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if (sem_close(semaphores[i]) != 0) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_semaphore; |
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return; |
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} |
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} |
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if (sem_close(semaphore_global) != 0) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_semaphore; |
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return; |
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} |
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return; |
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} |
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void |
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destruction_fifos_signaux(struct_processus *s_etat_processus) |
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{ |
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int i; |
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unsigned char *nom; |
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if (shmdt(fifos) == -1) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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if (shmctl(segment, IPC_RMID, 0) == -1) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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if ((nom = nom_segment((*s_etat_processus).chemin_fichiers_temporaires, |
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getpid())) == NULL) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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unlink(nom); |
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free(nom); |
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for(i = 0; i < nombre_queues; i++) |
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{ |
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if ((nom = nom_semaphore(getpid(), i)) == NULL) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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if (sem_unlink(nom) != 0) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_semaphore; |
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return; |
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} |
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free(nom); |
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} |
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if ((nom = nom_semaphore(getpid(), nombre_queues)) == NULL) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
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return; |
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} |
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if (sem_unlink(nom) != 0) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_semaphore; |
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return; |
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} |
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free(nom); |
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return; |
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} |
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int |
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queue_in(pid_t pid, int signal) |
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{ |
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#undef printf |
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// Transformer ce truc en POSIX ! On ne fait du SysV que si on n'a pas le choix |
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# ifndef IPCS_SYSV |
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# else // Traitement à l'aide d'IPCS SystemV |
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int *base; |
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int *buffer; |
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int *projection_fifos; |
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int queue; |
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int identifiant; |
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key_t clef; |
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sem_t *semaphore; |
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struct stat s_stat; |
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unsigned char *nom; |
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queue = queue_de_signal(signal); |
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// Ouverture des projections |
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if ((nom = nom_segment(chemin, pid)) == NULL) |
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{ |
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return(-1); |
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} |
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// Dans le cas de SIGSTART, premier signal envoyé à un processus fils, |
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// il convient d'attendre que le fichier support soit effectivement |
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// accessible. Dans tous les autres cas, ce fichier doit exister. S'il |
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// n'existe plus, le processus associé n'existe plus. |
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if (signal == SIGSTART) |
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{ |
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// On attend que le fichier sois présent |
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while(stat(nom, &s_stat) != 0); |
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} |
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if ((clef = ftok(nom, 1)) == -1) |
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{ |
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return(-1); |
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} |
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free(nom); |
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if (signal == SIGSTART) |
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{ |
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while((identifiant = shmget(clef, |
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nombre_queues * (longueur_queue + 4) * sizeof(int), |
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S_IRUSR | S_IWUSR)) == -1); |
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} |
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else |
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{ |
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if ((identifiant = shmget(clef, |
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nombre_queues * (longueur_queue + 4) * sizeof(int), |
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S_IRUSR | S_IWUSR)) == -1) |
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{ |
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return(-1); |
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} |
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} |
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projection_fifos = shmat(identifiant, NULL, 0); |
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if (((void *) projection_fifos) == ((void *) -1)) |
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{ |
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return(-1); |
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} |
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if ((nom = nom_semaphore(pid, queue)) == NULL) |
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{ |
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shmdt(projection_fifos); |
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return(-1); |
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} |
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while((semaphore = sem_open(nom, 0)) == SEM_FAILED); |
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if (sem_wait(semaphore) != 0) |
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{ |
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shmdt(projection_fifos); |
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return(-1); |
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} |
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// Il ne faut pas empiler plusieurs SIGSTART car SIGSTART peut provenir |
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// de l'instruction SWI. Plusieurs threads peuvent interrompre de façon |
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// asynchrone le processus père durant une phase de signaux masqués. |
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base = &(projection_fifos[(longueur_queue + 4) * queue]); |
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buffer = &(base[4]); |
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// base[3] contient le nombre d'éléments restants |
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if (base[3] <= 0) |
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{ |
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sem_post(semaphore); |
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sem_close(semaphore); |
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shmdt(projection_fifos); |
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return(-1); |
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} |
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base[3]--; |
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// base[1] contient le prochain élément à écrire |
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buffer[base[1]++] = (int) pid; |
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base[1] %= base[2]; |
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if (sem_post(semaphore) != 0) |
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{ |
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shmdt(projection_fifos); |
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sem_close(semaphore); |
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return(-1); |
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} |
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sem_close(semaphore); |
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// Fermeture des projections |
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shmdt(projection_fifos); |
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# endif |
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return(0); |
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} |
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pid_t |
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origine_signal(int signal) |
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{ |
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int *base; |
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int *buffer; |
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int pid; |
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int queue; |
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queue = queue_de_signal(signal); |
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BUG(queue == -1, uprintf("[%d] Unknown signal %d in this context\n", |
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(int) getpid(), signal)); |
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if (sem_wait(semaphores[queue]) != 0) |
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{ |
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return(-1); |
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} |
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// Le signal SIGCONT peut être envoyé de façon totalement asynchrone. |
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// Il peut y avoir plus de signaux envoyés que d'interruptions traitées. |
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// Il convient donc de rectifier la queue lors du traitement de |
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// l'interruption correspondante. Le gestionnaire étant installé sans |
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// l'option NODEFER, la queue reste cohérente. |
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if (signal == SIGCONT) |
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{ |
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base = &(fifos[(longueur_queue + 4) * queue]); |
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buffer = &(base[4]); |
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base[0] = (base[1] - 1) % base[2]; |
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pid = buffer[base[0]++]; |
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base[3] = base[2]; |
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} |
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else |
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{ |
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base = &(fifos[(longueur_queue + 4) * queue]); |
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buffer = &(base[4]); |
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pid = buffer[base[0]++]; |
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base[0] %= base[2]; |
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base[3]++; |
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} |
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if (base[3] > base[2]) |
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{ |
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sem_post(semaphores[queue]); |
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return(-1); |
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} |
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if (sem_post(semaphores[queue]) != 0) |
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{ |
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return(-1); |
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} |
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return((pid_t) pid); |
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} |
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#endif |
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#ifdef printf |
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# undef printf |
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#endif |
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void |
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interruption1(SIGHANDLER_ARGS) |
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{ |
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pid_t pid; |
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pthread_t thread; |
pthread_t thread; |
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struct_processus *s_etat_processus; |
struct_processus *s_etat_processus; |
Line 1735 interruption1(int signal, siginfo_t *sig
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Line 2244 interruption1(int signal, siginfo_t *sig
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verrouillage_gestionnaire_signaux(); |
verrouillage_gestionnaire_signaux(); |
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# ifdef _BROKEN_SIGINFO |
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if (signal == SIGINT) |
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{ |
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// Si l'interruption provient du clavier, il n'y a pas eu d'appel |
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// à queue_in(). |
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pid = getpid(); |
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} |
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else |
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{ |
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pid = origine_signal(signal); |
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} |
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# else |
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pid = (*siginfo).si_pid; |
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# endif |
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switch(signal) |
switch(signal) |
{ |
{ |
case SIGALRM : |
case SIGALRM : |
{ |
{ |
if ((*siginfo).si_pid == getpid()) |
if (pid == getpid()) |
{ |
{ |
if ((s_etat_processus = recherche_thread(getpid(), |
if ((s_etat_processus = recherche_thread(getpid(), |
pthread_self())) == NULL) |
pthread_self())) == NULL) |
{ |
{ |
deverrouillage_gestionnaire_signaux(); |
deverrouillage_gestionnaire_signaux(); |
return; |
return; |
} |
} |
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if (((*s_etat_processus).type_debug & d_debug_signaux) != 0) |
if (((*s_etat_processus).type_debug & d_debug_signaux) != 0) |
Line 1784 interruption1(int signal, siginfo_t *sig
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Line 2309 interruption1(int signal, siginfo_t *sig
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* Solaris suit en particulier cette spécification. |
* Solaris suit en particulier cette spécification. |
*/ |
*/ |
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# ifndef _BROKEN_SIGINFO |
if (siginfo == NULL) |
if (siginfo == NULL) |
{ |
{ |
kill(getpid(), signal); |
kill(getpid(), signal); |
} |
} |
else if ((*siginfo).si_pid == getpid()) |
else |
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# endif |
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if (pid == getpid()) |
{ |
{ |
if ((s_etat_processus = recherche_thread(getpid(), |
if ((s_etat_processus = recherche_thread(getpid(), |
pthread_self())) == NULL) |
pthread_self())) == NULL) |
Line 1863 interruption1(int signal, siginfo_t *sig
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Line 2391 interruption1(int signal, siginfo_t *sig
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} |
} |
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void |
void |
interruption2(int signal, siginfo_t *siginfo, void *context) |
interruption2(SIGHANDLER_ARGS) |
{ |
{ |
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pid_t pid; |
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pthread_t thread; |
pthread_t thread; |
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struct_processus *s_etat_processus; |
struct_processus *s_etat_processus; |
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verrouillage_gestionnaire_signaux(); |
verrouillage_gestionnaire_signaux(); |
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|
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# ifdef _BROKEN_SIGINFO |
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pid = origine_signal(signal); |
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# else |
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pid = (*siginfo).si_pid; |
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# endif |
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|
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# ifndef _BROKEN_SIGINFO |
if (siginfo == NULL) |
if (siginfo == NULL) |
{ |
{ |
/* |
/* |
Line 1887 interruption2(int signal, siginfo_t *sig
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Line 2425 interruption2(int signal, siginfo_t *sig
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return; |
return; |
} |
} |
} |
} |
else if ((*siginfo).si_pid == getpid()) |
else |
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# endif |
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if (pid == getpid()) |
{ |
{ |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) |
== NULL) |
== NULL) |
Line 1935 interruption2(int signal, siginfo_t *sig
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Line 2475 interruption2(int signal, siginfo_t *sig
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} |
} |
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void |
void |
interruption3(int signal, siginfo_t *siginfo, void *context) |
interruption3(SIGHANDLER_ARGS) |
{ |
{ |
|
pid_t pid; |
|
|
struct_processus *s_etat_processus; |
struct_processus *s_etat_processus; |
|
|
static int compteur = 0; |
static int compteur = 0; |
|
|
verrouillage_gestionnaire_signaux(); |
verrouillage_gestionnaire_signaux(); |
|
|
|
# ifdef _BROKEN_SIGINFO |
|
pid = origine_signal(signal); |
|
# else |
|
pid = (*siginfo).si_pid; |
|
# endif |
|
|
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) == NULL) |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) == NULL) |
{ |
{ |
deverrouillage_gestionnaire_signaux(); |
deverrouillage_gestionnaire_signaux(); |
Line 1995 interruption3(int signal, siginfo_t *sig
|
Line 2543 interruption3(int signal, siginfo_t *sig
|
} |
} |
|
|
void |
void |
interruption4(int signal, siginfo_t *siginfo, void *context) |
interruption4(SIGHANDLER_ARGS) |
{ |
{ |
|
pid_t pid; |
|
|
struct_processus *s_etat_processus; |
struct_processus *s_etat_processus; |
|
|
verrouillage_gestionnaire_signaux(); |
verrouillage_gestionnaire_signaux(); |
|
|
|
# ifdef _BROKEN_SIGINFO |
|
pid = origine_signal(signal); |
|
# else |
|
pid = (*siginfo).si_pid; |
|
# endif |
|
|
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) == NULL) |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) == NULL) |
{ |
{ |
deverrouillage_gestionnaire_signaux(); |
deverrouillage_gestionnaire_signaux(); |
Line 2023 interruption4(int signal, siginfo_t *sig
|
Line 2579 interruption4(int signal, siginfo_t *sig
|
} |
} |
|
|
void |
void |
interruption5(int signal, siginfo_t *siginfo, void *context) |
interruption5(SIGHANDLER_ARGS) |
{ |
{ |
|
pid_t pid; |
|
|
pthread_t thread; |
pthread_t thread; |
|
|
struct_processus *s_etat_processus; |
struct_processus *s_etat_processus; |
|
|
verrouillage_gestionnaire_signaux(); |
verrouillage_gestionnaire_signaux(); |
|
|
if ((*siginfo).si_pid == getpid()) |
# ifdef _BROKEN_SIGINFO |
|
pid = origine_signal(signal); |
|
# else |
|
pid = (*siginfo).si_pid; |
|
# endif |
|
|
|
if (pid == getpid()) |
{ |
{ |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) |
== NULL) |
== NULL) |
Line 2086 interruption5(int signal, siginfo_t *sig
|
Line 2651 interruption5(int signal, siginfo_t *sig
|
} |
} |
|
|
void |
void |
interruption6(int signal, siginfo_t *siginfo, void *context) |
interruption6(SIGHANDLER_ARGS) |
{ |
{ |
|
pid_t pid; |
|
|
struct_processus *s_etat_processus; |
struct_processus *s_etat_processus; |
|
|
verrouillage_gestionnaire_signaux(); |
verrouillage_gestionnaire_signaux(); |
|
|
|
# ifdef _BROKEN_SIGINFO |
|
pid = origine_signal(signal); |
|
# else |
|
pid = (*siginfo).si_pid; |
|
# endif |
|
|
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) == NULL) |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) == NULL) |
{ |
{ |
deverrouillage_gestionnaire_signaux(); |
deverrouillage_gestionnaire_signaux(); |
Line 2110 interruption6(int signal, siginfo_t *sig
|
Line 2683 interruption6(int signal, siginfo_t *sig
|
} |
} |
|
|
void |
void |
interruption7(int signal, siginfo_t *siginfo, void *context) |
interruption7(SIGHANDLER_ARGS) |
{ |
{ |
|
pid_t pid; |
|
|
struct_processus *s_etat_processus; |
struct_processus *s_etat_processus; |
|
|
verrouillage_gestionnaire_signaux(); |
verrouillage_gestionnaire_signaux(); |
|
|
|
# ifdef _BROKEN_SIGINFO |
|
pid = origine_signal(signal); |
|
# else |
|
pid = (*siginfo).si_pid; |
|
# endif |
|
|
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) == NULL) |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) == NULL) |
{ |
{ |
deverrouillage_gestionnaire_signaux(); |
deverrouillage_gestionnaire_signaux(); |
Line 2137 interruption7(int signal, siginfo_t *sig
|
Line 2718 interruption7(int signal, siginfo_t *sig
|
} |
} |
|
|
void |
void |
interruption8(int signal, siginfo_t *siginfo, void *context) |
interruption8(SIGHANDLER_ARGS) |
{ |
{ |
|
pid_t pid; |
|
|
pthread_t thread; |
pthread_t thread; |
|
|
struct_processus *s_etat_processus; |
struct_processus *s_etat_processus; |
|
|
verrouillage_gestionnaire_signaux(); |
verrouillage_gestionnaire_signaux(); |
|
|
if ((*siginfo).si_pid == getpid()) |
# ifdef _BROKEN_SIGINFO |
|
pid = origine_signal(signal); |
|
# else |
|
pid = (*siginfo).si_pid; |
|
# endif |
|
|
|
if (pid == getpid()) |
{ |
{ |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) |
== NULL) |
== NULL) |
Line 2180 interruption8(int signal, siginfo_t *sig
|
Line 2770 interruption8(int signal, siginfo_t *sig
|
} |
} |
|
|
void |
void |
interruption9(int signal, siginfo_t *siginfo, void *context) |
interruption9(SIGHANDLER_ARGS) |
{ |
{ |
|
pid_t pid; |
|
|
struct_processus *s_etat_processus; |
struct_processus *s_etat_processus; |
|
|
verrouillage_gestionnaire_signaux(); |
verrouillage_gestionnaire_signaux(); |
|
|
|
# ifdef _BROKEN_SIGINFO |
|
pid = origine_signal(signal); |
|
# else |
|
pid = (*siginfo).si_pid; |
|
# endif |
|
|
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) == NULL) |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) == NULL) |
{ |
{ |
deverrouillage_gestionnaire_signaux(); |
deverrouillage_gestionnaire_signaux(); |
Line 2199 interruption9(int signal, siginfo_t *sig
|
Line 2797 interruption9(int signal, siginfo_t *sig
|
fflush(stdout); |
fflush(stdout); |
} |
} |
|
|
|
# ifdef _BROKEN_SIGINFO |
|
if (queue_in(getpid(), signal) != 0) |
|
{ |
|
return; |
|
} |
|
|
|
deverrouillage_gestionnaire_signaux(); |
|
interruption11(signal); |
|
# else |
deverrouillage_gestionnaire_signaux(); |
deverrouillage_gestionnaire_signaux(); |
interruption11(signal, siginfo, context); |
interruption11(signal, siginfo, context); |
|
# endif |
return; |
return; |
} |
} |
|
|
void |
void |
interruption10(int signal, siginfo_t *siginfo, void *context) |
interruption10(SIGHANDLER_ARGS) |
{ |
{ |
file *fichier; |
file *fichier; |
|
|
|
pid_t pid; |
|
|
struct_processus *s_etat_processus; |
struct_processus *s_etat_processus; |
|
|
unsigned char nom[8 + 64 + 1]; |
unsigned char nom[8 + 64 + 1]; |
|
|
verrouillage_gestionnaire_signaux(); |
verrouillage_gestionnaire_signaux(); |
|
|
|
# ifdef _BROKEN_SIGINFO |
|
pid = origine_signal(signal); |
|
# else |
|
pid = (*siginfo).si_pid; |
|
# endif |
|
|
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) == NULL) |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) == NULL) |
{ |
{ |
deverrouillage_gestionnaire_signaux(); |
deverrouillage_gestionnaire_signaux(); |
Line 2246 interruption10(int signal, siginfo_t *si
|
Line 2862 interruption10(int signal, siginfo_t *si
|
} |
} |
|
|
void |
void |
interruption11(int signal, siginfo_t *siginfo, void *context) |
interruption11(SIGHANDLER_ARGS) |
{ |
{ |
|
pid_t pid; |
|
|
pthread_t thread; |
pthread_t thread; |
|
|
struct_processus *s_etat_processus; |
struct_processus *s_etat_processus; |
|
|
verrouillage_gestionnaire_signaux(); |
verrouillage_gestionnaire_signaux(); |
|
|
if ((*siginfo).si_pid == getpid()) |
# ifdef _BROKEN_SIGINFO |
|
pid = origine_signal(signal); |
|
# else |
|
pid = (*siginfo).si_pid; |
|
# endif |
|
|
|
if (pid == getpid()) |
{ |
{ |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) |
if ((s_etat_processus = recherche_thread(getpid(), pthread_self())) |
== NULL) |
== NULL) |
Line 2331 traitement_exceptions_gsl(const char *re
|
Line 2956 traitement_exceptions_gsl(const char *re
|
return; |
return; |
} |
} |
|
|
|
#ifdef _BROKEN_SIGINFO |
|
|
|
#undef kill |
|
#undef pthread_kill |
|
|
|
int |
|
kill_broken_siginfo(pid_t pid, int signal) |
|
{ |
|
int ios; |
|
|
|
sem_t *semaphore; |
|
|
|
unsigned char *nom; |
|
|
|
/* |
|
* Lorsqu'on veut interrompre le processus pid, on ouvre le segment |
|
* correspondant au processus en question et ou ajoute le pid dans la |
|
* queue. |
|
* |
|
* Le sémaphore global à tous les threads d'un même processus sert |
|
* à garantir que les signaux seront traités dans l'ordre de ce qui est |
|
* effectivement mis dans la queue. |
|
*/ |
|
|
|
// Sémaphore acquis |
|
|
|
if ((nom = nom_semaphore(getpid(), nombre_queues)) == NULL) |
|
{ |
|
return(-1); |
|
} |
|
|
|
if ((semaphore = sem_open(nom, 0)) == SEM_FAILED) |
|
{ |
|
free(nom); |
|
return(-1); |
|
} |
|
|
|
free(nom); |
|
|
|
if (sem_wait(semaphore) == -1) |
|
{ |
|
return(-1); |
|
} |
|
|
|
if ((signal != 0) && (signal != SIGINT)) |
|
{ |
|
if (queue_in(pid, signal) != 0) |
|
{ |
|
sem_post(semaphore); |
|
sem_close(semaphore); |
|
return(-1); |
|
} |
|
} |
|
|
|
ios = kill(pid, signal); |
|
|
|
// Sémaphore relâché |
|
|
|
sem_post(semaphore); |
|
sem_close(semaphore); |
|
|
|
return(ios); |
|
} |
|
|
|
int |
|
pthread_kill_broken_siginfo(pthread_t tid, int signal) |
|
{ |
|
int ios; |
|
|
|
sem_t *semaphore; |
|
|
|
unsigned char *nom; |
|
|
|
if ((nom = nom_semaphore(getpid(), nombre_queues)) == NULL) |
|
{ |
|
return(-1); |
|
} |
|
|
|
if ((semaphore = sem_open(nom, 0)) == SEM_FAILED) |
|
{ |
|
free(nom); |
|
return(-1); |
|
} |
|
|
|
free(nom); |
|
|
|
if (sem_wait(semaphore) == -1) |
|
{ |
|
return(-1); |
|
} |
|
|
|
if ((signal != 0) && (signal != SIGINT)) |
|
{ |
|
if (queue_in(getpid(), signal) != 0) |
|
{ |
|
sem_post(semaphore); |
|
sem_close(semaphore); |
|
return(-1); |
|
} |
|
} |
|
|
|
ios = pthread_kill(tid, signal); |
|
|
|
sem_post(semaphore); |
|
sem_close(semaphore); |
|
|
|
return(ios); |
|
} |
|
|
|
#endif |
|
|
// vim: ts=4 |
// vim: ts=4 |