version 1.18, 2010/05/24 10:58:36
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version 1.35, 2010/08/25 09:06:49
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Line 1
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Line 1
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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. |
Line 20
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Line 20
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*/ |
*/ |
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#include "rpl.conv.h" |
#include "rpl-conv.h" |
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/* |
/* |
Line 125 insertion_thread(struct_processus *s_eta
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Line 125 insertion_thread(struct_processus *s_eta
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} |
} |
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(*l_nouvel_objet).suivant = liste_threads; |
(*l_nouvel_objet).suivant = liste_threads; |
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liste_threads = l_nouvel_objet; |
liste_threads = l_nouvel_objet; |
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# ifndef SEMAPHORES_NOMMES |
# ifndef SEMAPHORES_NOMMES |
Line 184 insertion_thread_surveillance(struct_pro
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Line 183 insertion_thread_surveillance(struct_pro
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} |
} |
} |
} |
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pthread_mutex_lock(&((*s_argument_thread).mutex)); |
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(*s_argument_thread).nombre_references++; |
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pthread_mutex_unlock(&((*s_argument_thread).mutex)); |
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(*l_nouvel_objet).suivant = liste_threads_surveillance; |
(*l_nouvel_objet).suivant = liste_threads_surveillance; |
(*l_nouvel_objet).donnee = (void *) s_argument_thread; |
(*l_nouvel_objet).donnee = (void *) s_argument_thread; |
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Line 448 retrait_thread_surveillance(struct_proce
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Line 451 retrait_thread_surveillance(struct_proce
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pthread_sigmask(SIG_SETMASK, &oldset, NULL); |
pthread_sigmask(SIG_SETMASK, &oldset, NULL); |
sigpending(&set); |
sigpending(&set); |
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return; |
return; |
} |
} |
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Line 669 liberation_threads(struct_processus *s_e
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Line 673 liberation_threads(struct_processus *s_e
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.l_base_pile_processus; |
.l_base_pile_processus; |
while(element_courant != NULL) |
while(element_courant != NULL) |
{ |
{ |
pthread_mutex_trylock(&((*(*((struct_liste_chainee *) |
s_argument_thread = (struct_descripteur_thread *) |
element_courant)).donnee).mutex)); |
(*((struct_liste_chainee *) element_courant)).donnee; |
pthread_mutex_unlock(&((*(*((struct_liste_chainee *) |
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element_courant)).donnee).mutex)); |
if (pthread_mutex_lock(&((*s_argument_thread).mutex)) != 0) |
liberation(s_etat_processus, |
{ |
(*((struct_liste_chainee *) element_courant)).donnee); |
(*s_etat_processus).erreur_systeme = d_es_processus; |
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sem_post(&semaphore_liste_threads); |
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return; |
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} |
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(*s_argument_thread).nombre_references--; |
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BUG((*s_argument_thread).nombre_references < 0, |
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printf("(*s_argument_thread).nombre_references = %d\n", |
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(int) (*s_argument_thread).nombre_references)); |
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if ((*s_argument_thread).nombre_references == 0) |
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{ |
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close((*s_argument_thread).pipe_objets[0]); |
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close((*s_argument_thread).pipe_acquittement[1]); |
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close((*s_argument_thread).pipe_injections[1]); |
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close((*s_argument_thread).pipe_nombre_injections[1]); |
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close((*s_argument_thread).pipe_nombre_objets_attente[0]); |
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close((*s_argument_thread).pipe_interruptions[0]); |
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close((*s_argument_thread) |
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.pipe_nombre_interruptions_attente[0]); |
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if (pthread_mutex_unlock(&((*s_argument_thread).mutex)) |
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!= 0) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_processus; |
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sem_post(&semaphore_liste_threads); |
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return; |
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} |
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pthread_mutex_destroy(&((*s_argument_thread).mutex)); |
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if ((*s_argument_thread).processus_detache == d_faux) |
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{ |
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if ((*s_argument_thread).destruction_objet == d_vrai) |
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{ |
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liberation(s_etat_processus, (*s_argument_thread) |
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.argument); |
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} |
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} |
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free(s_argument_thread); |
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} |
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else |
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{ |
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if (pthread_mutex_unlock(&((*s_argument_thread).mutex)) |
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!= 0) |
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{ |
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(*s_etat_processus).erreur_systeme = d_es_processus; |
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sem_post(&semaphore_liste_threads); |
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return; |
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} |
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} |
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element_suivant = (*((struct_liste_chainee *) element_courant)) |
element_suivant = (*((struct_liste_chainee *) element_courant)) |
.suivant; |
.suivant; |
free((struct_liste_chainee *) element_courant); |
free(element_courant); |
element_courant = element_suivant; |
element_courant = element_suivant; |
} |
} |
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(*s_etat_processus).l_base_pile_processus = NULL; |
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pthread_mutex_trylock(&((*(*s_etat_processus).indep).mutex)); |
pthread_mutex_trylock(&((*(*s_etat_processus).indep).mutex)); |
pthread_mutex_unlock(&((*(*s_etat_processus).indep).mutex)); |
pthread_mutex_unlock(&((*(*s_etat_processus).indep).mutex)); |
liberation(s_etat_processus, (*s_etat_processus).indep); |
liberation(s_etat_processus, (*s_etat_processus).indep); |
Line 1291 liberation_threads(struct_processus *s_e
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Line 1350 liberation_threads(struct_processus *s_e
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s_argument_thread = (struct_descripteur_thread *) |
s_argument_thread = (struct_descripteur_thread *) |
(*l_element_courant).donnee; |
(*l_element_courant).donnee; |
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close((*s_argument_thread).pipe_objets[0]); |
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close((*s_argument_thread).pipe_acquittement[1]); |
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close((*s_argument_thread).pipe_injections[1]); |
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close((*s_argument_thread).pipe_nombre_injections[1]); |
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close((*s_argument_thread).pipe_nombre_objets_attente[0]); |
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close((*s_argument_thread).pipe_interruptions[0]); |
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close((*s_argument_thread).pipe_nombre_interruptions_attente[0]); |
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if (pthread_mutex_lock(&((*s_argument_thread).mutex)) != 0) |
if (pthread_mutex_lock(&((*s_argument_thread).mutex)) != 0) |
{ |
{ |
(*s_etat_processus).erreur_systeme = d_es_processus; |
(*s_etat_processus).erreur_systeme = d_es_processus; |
Line 1314 liberation_threads(struct_processus *s_e
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Line 1365 liberation_threads(struct_processus *s_e
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if ((*s_argument_thread).nombre_references == 0) |
if ((*s_argument_thread).nombre_references == 0) |
{ |
{ |
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close((*s_argument_thread).pipe_objets[0]); |
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close((*s_argument_thread).pipe_acquittement[1]); |
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close((*s_argument_thread).pipe_injections[1]); |
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close((*s_argument_thread).pipe_nombre_injections[1]); |
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close((*s_argument_thread).pipe_nombre_objets_attente[0]); |
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close((*s_argument_thread).pipe_interruptions[0]); |
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close((*s_argument_thread).pipe_nombre_interruptions_attente[0]); |
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if (pthread_mutex_unlock(&((*s_argument_thread).mutex)) != 0) |
if (pthread_mutex_unlock(&((*s_argument_thread).mutex)) != 0) |
{ |
{ |
(*s_etat_processus).erreur_systeme = d_es_processus; |
(*s_etat_processus).erreur_systeme = d_es_processus; |
Line 1322 liberation_threads(struct_processus *s_e
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Line 1381 liberation_threads(struct_processus *s_e
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} |
} |
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pthread_mutex_destroy(&((*s_argument_thread).mutex)); |
pthread_mutex_destroy(&((*s_argument_thread).mutex)); |
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if ((*s_argument_thread).processus_detache == d_faux) |
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{ |
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if ((*s_argument_thread).destruction_objet == d_vrai) |
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{ |
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liberation(s_etat_processus, (*s_argument_thread).argument); |
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} |
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} |
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free(s_argument_thread); |
free(s_argument_thread); |
} |
} |
else |
else |
Line 1656 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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#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 markov; |
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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 |
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creation_fifos_signaux(struct_processus *s_etat_processus) |
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{ |
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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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int i; |
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unsigned char *nom; |
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# ifndef IPCS_SYSV // POSIX |
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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 ((segment = shm_open(nom, O_RDWR | O_CREAT | O_EXCL, |
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S_IRUSR | S_IWUSR)) == -1) |
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{ |
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free(nom); |
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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 (ftruncate(segment, nombre_queues * ((2 * longueur_queue) + 4) * |
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sizeof(int)) == -1) |
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{ |
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free(nom); |
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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 = mmap(NULL, nombre_queues * ((2 * longueur_queue) + 4) * sizeof(int), |
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PROT_READ | PROT_WRITE, MAP_SHARED, segment, 0); |
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close(segment); |
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if (((void *) fifos) == ((void *) -1)) |
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{ |
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if (shm_unlink(nom) == -1) |
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{ |
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free(nom); |
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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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(*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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# else // SystemV |
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file *desc; |
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key_t clef; |
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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 * ((2 * 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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* 4 + (2) + 1 ) 4 + 2 * (2) : horodatage en centième de secondes. |
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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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markov = 0; |
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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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# ifdef IPCS_SYSV // SystemV |
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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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# else // POSIX |
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if (munmap(fifos, nombre_queues * ((2 * longueur_queue) + 4) * sizeof(int)) |
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!= 0) |
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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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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 |
void |
interruption1(int signal, siginfo_t *siginfo, void *context) |
destruction_fifos_signaux(struct_processus *s_etat_processus) |
{ |
{ |
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int i; |
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unsigned char *nom; |
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# ifdef IPCS_SYSV // SystemV |
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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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# else // POSIX |
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if (munmap(fifos, nombre_queues * ((2 * longueur_queue) + 4) * sizeof(int)) |
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!= 0) |
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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(NULL, 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 (shm_unlink(nom) != 0) |
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{ |
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free(nom); |
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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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# endif |
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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; |
|
return; |
|
} |
|
|
|
if (sem_unlink(nom) != 0) |
|
{ |
|
(*s_etat_processus).erreur_systeme = d_es_semaphore; |
|
return; |
|
} |
|
|
|
free(nom); |
|
} |
|
|
|
if ((nom = nom_semaphore(getpid(), nombre_queues)) == NULL) |
|
{ |
|
(*s_etat_processus).erreur_systeme = d_es_allocation_memoire; |
|
return; |
|
} |
|
|
|
if (sem_unlink(nom) != 0) |
|
{ |
|
(*s_etat_processus).erreur_systeme = d_es_semaphore; |
|
return; |
|
} |
|
|
|
free(nom); |
|
|
|
return; |
|
} |
|
|
|
inline int |
|
horodatage() |
|
{ |
|
int ts; |
|
|
|
struct timeval tv; |
|
|
|
gettimeofday(&tv, NULL); |
|
ts = (int) ((tv.tv_sec * 100) + (tv.tv_usec / 10000)); |
|
|
|
return(ts); |
|
} |
|
|
|
int |
|
queue_in(pid_t pid, int signal) |
|
{ |
|
int queue; |
|
int *base; |
|
int *buffer; |
|
int horodatage_initial; |
|
int identifiant; |
|
int *projection_fifos; |
|
|
|
sem_t *semaphore; |
|
|
|
queue = queue_de_signal(signal); |
|
|
|
unsigned char *nom; |
|
|
|
# ifndef IPCS_SYSV |
|
|
|
// Ouverture des projections |
|
|
|
if ((nom = nom_segment(NULL, pid)) == NULL) |
|
{ |
|
return(-1); |
|
} |
|
|
|
// Dans le cas de SIGSTART, premier signal envoyé à un processus fils, |
|
// il convient d'attendre que le fichier support soit effectivement |
|
// accessible. Dans tous les autres cas, ce fichier doit exister. S'il |
|
// n'existe plus, le processus associé n'existe plus. |
|
|
|
if (signal == SIGSTART) |
|
{ |
|
horodatage_initial = horodatage(); |
|
|
|
while((identifiant = shm_open(nom, O_RDWR, S_IRUSR | S_IWUSR)) == -1) |
|
{ |
|
if (abs(horodatage_initial - horodatage()) > 500) |
|
{ |
|
return(-1); |
|
} |
|
} |
|
} |
|
else |
|
{ |
|
if ((identifiant = shm_open(nom, O_RDWR, S_IRUSR | S_IWUSR)) == -1) |
|
{ |
|
return(-1); |
|
} |
|
} |
|
|
|
projection_fifos = mmap(NULL, nombre_queues * ((2 * longueur_queue) + 4) |
|
* sizeof(int), PROT_READ | PROT_WRITE, MAP_SHARED, identifiant, 0); |
|
close(identifiant); |
|
|
|
if (((void *) projection_fifos) == ((void *) -1)) |
|
{ |
|
return(-1); |
|
} |
|
|
|
# else // Traitement à l'aide d'IPCS SystemV |
|
|
|
key_t clef; |
|
|
|
struct stat s_stat; |
|
|
|
// Ouverture des projections |
|
|
|
if ((nom = nom_segment(chemin, pid)) == NULL) |
|
{ |
|
return(-1); |
|
} |
|
|
|
// Dans le cas de SIGSTART, premier signal envoyé à un processus fils, |
|
// il convient d'attendre que le fichier support soit effectivement |
|
// accessible. Dans tous les autres cas, ce fichier doit exister. S'il |
|
// n'existe plus, le processus associé n'existe plus. |
|
|
|
if (signal == SIGSTART) |
|
{ |
|
// On attend que le fichier sois présent |
|
|
|
horodatage_initial = horodatage(); |
|
|
|
while(stat(nom, &s_stat) != 0) |
|
{ |
|
if (abs(horodatage_initial - horodatage()) > 500) |
|
{ |
|
return(-1); |
|
} |
|
} |
|
} |
|
|
|
if ((clef = ftok(nom, 1)) == -1) |
|
{ |
|
return(-1); |
|
} |
|
|
|
free(nom); |
|
|
|
if (signal == SIGSTART) |
|
{ |
|
while((identifiant = shmget(clef, |
|
nombre_queues * ((2 * longueur_queue) + 4) * sizeof(int), |
|
S_IRUSR | S_IWUSR)) == -1); |
|
} |
|
else |
|
{ |
|
if ((identifiant = shmget(clef, |
|
nombre_queues * ((2 * longueur_queue) + 4) * sizeof(int), |
|
S_IRUSR | S_IWUSR)) == -1) |
|
{ |
|
return(-1); |
|
} |
|
} |
|
|
|
projection_fifos = shmat(identifiant, NULL, 0); |
|
|
|
if (((void *) projection_fifos) == ((void *) -1)) |
|
{ |
|
return(-1); |
|
} |
|
|
|
# endif |
|
|
|
if ((nom = nom_semaphore(pid, queue)) == NULL) |
|
{ |
|
# ifdef IPCS_SYSV |
|
shmdt(projection_fifos); |
|
# else |
|
munmap(projection_fifos, nombre_queues * ((2 * longueur_queue) + 4) |
|
* sizeof(int)); |
|
# endif |
|
return(-1); |
|
} |
|
|
|
while((semaphore = sem_open(nom, 0)) == SEM_FAILED); |
|
free(nom); |
|
|
|
while(sem_wait(semaphore) != 0) |
|
{ |
|
if (errno != EINTR) |
|
{ |
|
# ifdef IPCS_SYSV |
|
shmdt(projection_fifos); |
|
# else |
|
munmap(projection_fifos, nombre_queues * ((2 * longueur_queue) + 4) |
|
* sizeof(int)); |
|
# endif |
|
return(-1); |
|
} |
|
} |
|
|
|
base = &(projection_fifos[(longueur_queue + 4) * queue]); |
|
buffer = &(base[4]); |
|
|
|
// base[3] contient le nombre d'éléments restants |
|
|
|
if (base[3] <= 0) |
|
{ |
|
sem_post(semaphore); |
|
sem_close(semaphore); |
|
# ifdef IPCS_SYSV |
|
shmdt(projection_fifos); |
|
# else |
|
munmap(projection_fifos, nombre_queues * ((2 * longueur_queue) + 4) |
|
* sizeof(int)); |
|
# endif |
|
return(-1); |
|
} |
|
|
|
base[3]--; |
|
|
|
// base[1] contient le prochain élément à écrire |
|
|
|
buffer[base[1] + (nombre_queues * base[2])] = horodatage(); |
|
buffer[base[1]++] = (int) pid; |
|
base[1] %= base[2]; |
|
|
|
if (sem_post(semaphore) != 0) |
|
{ |
|
# ifdef IPCS_SYSV |
|
shmdt(projection_fifos); |
|
# else |
|
munmap(projection_fifos, nombre_queues * ((2 * longueur_queue) + 4) |
|
* sizeof(int)); |
|
# endif |
|
sem_close(semaphore); |
|
return(-1); |
|
} |
|
|
|
sem_close(semaphore); |
|
|
|
// Fermeture des projections |
|
# ifdef IPCS_SYSV |
|
shmdt(projection_fifos); |
|
# else |
|
munmap(projection_fifos, nombre_queues * ((2 * longueur_queue) + 4) |
|
* sizeof(int)); |
|
# endif |
|
|
|
return(0); |
|
} |
|
|
|
inline int |
|
chaine_markov(int markov, int delta) |
|
{ |
|
double memoire = 0.9; |
|
int valeur; |
|
|
|
valeur = (int) ((memoire * markov) + ((1 - memoire) * delta)); |
|
valeur = (valeur < 10) ? 10 : valeur; |
|
|
|
return(valeur); |
|
} |
|
|
|
pid_t |
|
origine_signal(int signal) |
|
{ |
|
logical1 drapeau; |
|
|
|
int *base; |
|
int *buffer; |
|
int delta; |
|
int pid; |
|
int queue; |
|
|
|
queue = queue_de_signal(signal); |
|
|
|
BUG(queue == -1, uprintf("[%d] Unknown signal %d in this context\n", |
|
(int) getpid(), signal)); |
|
|
|
while(sem_wait(semaphores[queue]) != 0) |
|
{ |
|
if (errno != EINTR) |
|
{ |
|
return(-1); |
|
} |
|
} |
|
|
|
// On retire les interruptions anciennes qui ont été ratées sauf s'il |
|
// s'agit de la dernière dans la queue. |
|
|
|
base = &(fifos[(longueur_queue + 4) * queue]); |
|
buffer = &(base[4]); |
|
|
|
if (base[3] == (base[2] - 1)) |
|
{ |
|
delta = abs(horodatage() - |
|
buffer[base[0] + (nombre_queues * base[2])]); |
|
// Une seule interruption dans la queue. |
|
pid = buffer[base[0]++]; |
|
base[0] %= base[2]; |
|
base[3]++; |
|
|
|
markov = chaine_markov(markov, delta); |
|
} |
|
else if (base[3] >= base[2]) |
|
{ |
|
// Aucune interruption n'est dans la queue. |
|
// On a retiré trop d'interruptions de la queue. |
|
|
|
// (base[3] - base[2]) + 1 : nombre d'interruptions manquantes |
|
// base[0] - 1 : dernière interruption lue |
|
pid = buffer[((((base[0] + base[2] - 1) % base[2]) |
|
- ((base[3] - base[2]) + 1)) + base[2]) % base[2]]; |
|
} |
|
else |
|
{ |
|
// Plusieurs interruptions à distribuer. |
|
drapeau = d_vrai; |
|
|
|
do |
|
{ |
|
delta = abs(horodatage() - |
|
buffer[base[0] + (nombre_queues * base[2])]); |
|
pid = buffer[base[0]++]; |
|
base[0] %= base[2]; |
|
base[3]++; |
|
|
|
if ((delta > (2 * markov)) && (base[3] < base[2])) |
|
{ |
|
drapeau = d_vrai; |
|
} |
|
else |
|
{ |
|
drapeau = d_faux; |
|
} |
|
} while(drapeau == d_vrai); |
|
|
|
markov = chaine_markov(markov, delta); |
|
} |
|
|
|
if (sem_post(semaphores[queue]) != 0) |
|
{ |
|
return(-1); |
|
} |
|
|
|
return((pid_t) pid); |
|
} |
|
|
|
#endif |
|
|
|
void |
|
interruption1(SIGHANDLER_ARGS) |
|
{ |
|
pid_t pid; |
|
|
pthread_t thread; |
pthread_t thread; |
|
|
struct_processus *s_etat_processus; |
struct_processus *s_etat_processus; |
Line 1667 interruption1(int signal, siginfo_t *sig
|
Line 2457 interruption1(int signal, siginfo_t *sig
|
|
|
verrouillage_gestionnaire_signaux(); |
verrouillage_gestionnaire_signaux(); |
|
|
|
# ifdef _BROKEN_SIGINFO |
|
if (signal == SIGINT) |
|
{ |
|
// Si l'interruption provient du clavier, il n'y a pas eu d'appel |
|
// à queue_in(). |
|
|
|
pid = getpid(); |
|
} |
|
else |
|
{ |
|
pid = origine_signal(signal); |
|
} |
|
# else |
|
pid = (*siginfo).si_pid; |
|
# endif |
|
|
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; |
} |
} |
|
|
if (((*s_etat_processus).type_debug & d_debug_signaux) != 0) |
if (((*s_etat_processus).type_debug & d_debug_signaux) != 0) |
Line 1716 interruption1(int signal, siginfo_t *sig
|
Line 2522 interruption1(int signal, siginfo_t *sig
|
* Solaris suit en particulier cette spécification. |
* Solaris suit en particulier cette spécification. |
*/ |
*/ |
|
|
|
# ifndef _BROKEN_SIGINFO |
if (siginfo == NULL) |
if (siginfo == NULL) |
{ |
{ |
kill(getpid(), signal); |
kill(getpid(), signal); |
} |
} |
else if ((*siginfo).si_pid == getpid()) |
else |
|
# endif |
|
if (pid == getpid()) |
{ |
{ |
if ((s_etat_processus = recherche_thread(getpid(), |
if ((s_etat_processus = recherche_thread(getpid(), |
pthread_self())) == NULL) |
pthread_self())) == NULL) |
Line 1795 interruption1(int signal, siginfo_t *sig
|
Line 2604 interruption1(int signal, siginfo_t *sig
|
} |
} |
|
|
void |
void |
interruption2(int signal, siginfo_t *siginfo, void *context) |
interruption2(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(); |
|
|
|
# ifdef _BROKEN_SIGINFO |
|
pid = origine_signal(signal); |
|
# else |
|
pid = (*siginfo).si_pid; |
|
# endif |
|
|
|
# ifndef _BROKEN_SIGINFO |
if (siginfo == NULL) |
if (siginfo == NULL) |
{ |
{ |
/* |
/* |
Line 1819 interruption2(int signal, siginfo_t *sig
|
Line 2638 interruption2(int signal, siginfo_t *sig
|
return; |
return; |
} |
} |
} |
} |
else if ((*siginfo).si_pid == getpid()) |
else |
|
# 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 1867 interruption2(int signal, siginfo_t *sig
|
Line 2688 interruption2(int signal, siginfo_t *sig
|
} |
} |
|
|
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 1927 interruption3(int signal, siginfo_t *sig
|
Line 2756 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 1955 interruption4(int signal, siginfo_t *sig
|
Line 2792 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 2018 interruption5(int signal, siginfo_t *sig
|
Line 2864 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 2042 interruption6(int signal, siginfo_t *sig
|
Line 2896 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 2069 interruption7(int signal, siginfo_t *sig
|
Line 2931 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 2112 interruption8(int signal, siginfo_t *sig
|
Line 2983 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 2131 interruption9(int signal, siginfo_t *sig
|
Line 3010 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 2178 interruption10(int signal, siginfo_t *si
|
Line 3075 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 2263 traitement_exceptions_gsl(const char *re
|
Line 3169 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); |
|
} |
|
|
|
while((semaphore = sem_open(nom, 0)) == SEM_FAILED); |
|
free(nom); |
|
|
|
while(sem_wait(semaphore) != 0) |
|
{ |
|
if (errno != EINTR) |
|
{ |
|
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); |
|
} |
|
|
|
while((semaphore = sem_open(nom, 0)) == SEM_FAILED); |
|
free(nom); |
|
|
|
while(sem_wait(semaphore) != 0) |
|
{ |
|
if (errno != EINTR) |
|
{ |
|
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 |