School-DUT-info/M311-Principes-des-systemes-d-exploitation
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"depot M311"

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JunkJumper
2020-05-02 00:01:03 +02:00
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commit 16e128821d
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S3T_TP_05_PROCESSUS-4-SIGNAUX/Demonstrations/M311.lnk
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S3T_TP_05_PROCESSUS-4-SIGNAUX/Demonstrations/demoAlarm
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S3T_TP_05_PROCESSUS-4-SIGNAUX/Demonstrations/demoKill
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S3T_TP_05_PROCESSUS-4-SIGNAUX/Demonstrations/demo_alarm.c
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/**********************************************************/
/* DUT INFORMATIQUE - M311 - R. CHIGNOLI */
/* demo_alarm.c : Utilisation du signal SIGALRM par alarm */
/**********************************************************/
#include <stdio.h>
#include <signal.h>
#include <stdlib.h>
#include <assert.h>
#include <unistd.h>
void rep_SIGALRM ()
{ printf ("\n*** Processus %d : Signal SIGALRM recu\n\n", getpid());
exit(0);
}
int main (int argc, char* argv[])
{
int res;
assert (argc == 2);
signal (SIGALRM, rep_SIGALRM);
printf ("\n*** Processus %d : Je m' endors ......\n", getpid());
res = alarm (atoi(argv[1]));
for (;;);
}

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S3T_TP_05_PROCESSUS-4-SIGNAUX/Demonstrations/demo_kill.c
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/************************************************/
/* */
/* demo_kill.c : Utilisation de la routine kill */
/* */
/************************************************/
# include <stdio.h>
# include <signal.h>
# include <sys/types.h>
# include <unistd.h>
int main ()
{
printf ("\nJe commence et j'attends 3 secondes...\n");
sleep (3);
printf ("\n... puis je me suicide par kill - %d - \n", getpid());
kill (getpid(), SIGKILL);
printf ("\n... je suis mort\n");
return 0;
}

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S3T_TP_05_PROCESSUS-4-SIGNAUX/Demonstrations/demo_kill_grp_1.c
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/******************************************************/
/* DUT INFORMATIQUE - M311 - R. CHIGNOLI */
/* demo_kill_grp_1.c : Utilisation de la routine kill */
/******************************************************/
# include <stdio.h>
# include <signal.h>
#include <unistd.h>
#include <stdlib.h>
int main ()
{ int res;
res = fork ();
if (res != 0)
{
printf ("\nPERE No %d ( GRPID = %d ) : j'attends 5 secondes...\n",
getpid(), getpgrp());
sleep (5);
printf ("\nPERE No %d ( GRPID = %d ) : ... puis je me suicide par kill\n\n", getpid(), getpgrp());
kill (0, SIGKILL);
printf ("\nPERE No %d ( GRPID = %d ) : ... je suis mort\n\n", getpid(), getpgrp());
}
else
{
printf ("\nFILS No %d ( GRPID = %d ) : Je boucle indefiniment ...\n",
getpid(), getpgrp());
for(;;);
}
}

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S3T_TP_05_PROCESSUS-4-SIGNAUX/Demonstrations/demo_kill_grp_2.c
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/******************************************************/
/* DUT INFORMATIQUE - M311 - R. CHIGNOLI */
/* demo_kill_grp_2.c : Utilisation de la routine kill */
/******************************************************/
# include <stdio.h>
# include <signal.h>
#include <unistd.h>
#include <stdlib.h>
int main () {
int res;
res = fork ();
if (res != 0){
printf ("\nPERE No %d ( GRPID = %d ) : j'attends 3 secondes...\n", getpid(), getpgrp());
sleep (3);
printf ("\nPERE No %d ( GRPID = %d ) : ... puis je me suicide par kill\n", getpid(), getpgrp());
kill (0, SIGKILL);
printf ("\nPERE No %d ( GRPID = %d ) : ... je suis mort\n", getpid(), getpgrp());
}
else
{
if (setpgid (0, getpid()) != 0){
perror ("setgpid"); exit (1);
}
printf ("\nFILS No %d ( GRPID = %d ) : nouveau groupe ...\n", getpid(), getpgrp());
printf ("\nFILS No %d ( GRPID = %d ) : J'attends 5 secondes\n", getpid());
sleep (5);
printf ("\nFILS No %d ( GRPID = %d ) : Et je meurs naturellement !\n\n",
getpid());
exit (0);
}
}