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Alexis WAMSTER
2023-10-23 13:23:36 +02:00
parent 667dae6f1a
commit 322b22f9bf
5711 changed files with 72953 additions and 0 deletions
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45
SCR/SCR2/TP03/copy1byte.c Normal file
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#include <sys/types.h>
#include <unistd.h>
#include<stdio.h>
#include <stdlib.h>
#include<assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#define msg1 "je suis le pere"
#define msg2 "je suis le fils !!!"
int main(int argc,char * argv[]){
int infd,outfd;
ssize_t nbread;
char buf[1];
pid_t p;
if (argc != 3){
printf("%s infile outfile\n",argv[0]);
exit(1);
}
infd = open(argv[1],O_RDONLY);
assert(infd >= 0);
outfd = open(argv[2],O_WRONLY|O_CREAT|O_TRUNC,0644);
assert(outfd >= 0);
p=fork(); // <- decommentez cette ligne
while(1){
nbread=read(infd,buf,sizeof(buf));
if (nbread <=0 ) break;
write(outfd,buf,sizeof(buf));
}
close(infd);
close(outfd);
}

45
SCR/SCR2/TP03/copy1byte.c~ Normal file
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#include <sys/types.h>
#include <unistd.h>
#include<stdio.h>
#include <stdlib.h>
#include<assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#define msg1 "je suis le pere"
#define msg2 "je suis le fils !!!"
int main(int argc,char * argv[]){
int infd,outfd;
ssize_t nbread;
char buf[1];
pid_t p;
if (argc != 3){
printf("%s infile outfile\n",argv[0]);
exit(1);
}
infd = open(argv[1],O_RDONLY);
assert(infd >= 0);
outfd = open(argv[2],O_WRONLY|O_CREAT|O_TRUNC,0644);
assert(outfd >= 0);
//p=fork(); // <- decommentez cette ligne
while(1){
nbread=read(infd,buf,sizeof(buf));
if (nbread <=0 ) break;
write(outfd,buf,sizeof(buf));
}
close(infd);
close(outfd);
}

12
SCR/SCR2/TP03/ex1-stdio.c Normal file
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#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
int main(){
printf("NON");
if (fork()) {
printf("OUI\n");
}
}

14
SCR/SCR2/TP03/ex1-syscall.c Normal file
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#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
int main(){
//printf("NON");
write(STDOUT_FILENO,"NON",3);
if (fork()) {
//printf("OUI\n");
write(STDOUT_FILENO,"OUI\n",4);
}
}

5
SCR/SCR2/TP03/ex2.txt Normal file
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je suis alexis et je suis vraiment crazy !!! (:
je suis alexis et je suis vraiment crazy !!! (:
je suis alexis et je suis vraiment crazy !!! (:
je suis alexis et je suis vraiment crazy !!! (:
je suis alexis et je suis vraiment crazy !!! (:

1
SCR/SCR2/TP03/ex2.txt~ Normal file
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je suis alexis et je suis vraiment crazy !!! (:

5
SCR/SCR2/TP03/ex3.txt Normal file
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j esuis alexis et je suis vraiment crazy !!! (:
je suis alexis t jee suis vraiment crazy !!! (:
je uiss alexis et je suis vraiment crazy !!! (:
je suis alexis et je suis vraiment crazy !!! (:
je suis alexis et je suis vraiment crazy !!! (:

22
SCR/SCR2/TP03/ex4.c Normal file
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#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
int main(){
int pid = fork();
if (pid == -1) {
exit(0);
}
if (pid == 0) {
printf("fork = %d, pid = %d, ppid = %d\n",pid,getpid(),getppid());
sleep(4);
exit(2);
}
if (pid > 0) {
printf("fork = %d, pid = %d, ppid = %d\n",pid,getpid(),getppid());
printf("%d\n",wait());
exit(2);
}
}

12
SCR/SCR2/TP03/ex4.c~ Normal file
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#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
int main(){
printf("NON");
if (fork()) {
printf("OUI\n");
}
}

124
SCR/SCR2/TP03/ex5.c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#define SIZE 1000
int search0(const unsigned char * t,int start,int end)
{
int i;
for (i=start; i<end; i++){
if (t[i]==0){
return 1;
}
}
return 0;
}
int search1(const unsigned char * t,int start,int end)
{
int milieu = (end-start)/2;
int pid = fork();
int i;
int status;
if (pid < 0){
return 0;
}
if (pid == 0){
exit(search0(t,start,milieu+1));
}
if (pid > 0){
if (search0(t,milieu+1,end)){
return 1;
}
wait(&status);
return WEXITSTATUS(status);
}
return 0;
}
int search2(const unsigned char * t,int start,int end)
{
int i;
int nbFils;
int taille = (end-start);
int pid;
int status;
printf("Enter a number between 0 and 100: ", SIZE);
scanf(" %d", &nbFils);
for (int i=0; i<nbFils; i++){
pid = fork();
if (pid < 0){
exit(0);
}
if (pid == 0){
exit(search0(t, i*taille/nbFils, (i+1)*taille/nbFils));
}
}
for (int i=0; i<nbFils; i++){
wait(&status);
if (WEXITSTATUS(status) == 1){
return 1;
}
}
return 0;
}
int search3(const unsigned char * t,int start,int end)
{
int i;
int nbFils;
int taille = (end-start);
int pid;
int status;
printf("Enter a number between 0 and 100: ", SIZE);
scanf(" %d", &nbFils);
int* child_pids = (int*) malloc(sizeof(int) * nbFils);
for (int i=0; i<nbFils; i++){
pid = fork();
if (pid < 0){
exit(0);
}
if (pid == 0){
exit(search0(t, i*taille/nbFils, (i+1)*taille/nbFils));
}
child_pids[i] = pid;
}
for (int i=0; i<nbFils; i++){
wait(&status);
if (WEXITSTATUS(status) == 1){
for (int j = 0; j < nbFils; j++) {
kill(child_pids[j], SIGTERM);
}
return 1;
}
}
return 0;
}
int main(int argc , char * argv[])
{
unsigned char arr[SIZE];
int i;
srandom(time(NULL));
for (i = 0; i < SIZE; i++)
arr[i] = (unsigned char) (random() % 255) + 1;
printf("Enter a number between 0 and %d: ", SIZE);
scanf(" %d", &i);
if (i >= 0 && i < SIZE) arr[i] = 0;
if (search3(arr,0,SIZE-1))
printf("Found !\n");
else
printf("Not found !\n");
return EXIT_SUCCESS;
}

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SCR/SCR2/TP03/ex5.c~ Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define SIZE 1000
int search0(const unsigned char * t,int start,int end)
{
int i;
for (i=start; i<end; i++){
if (t[i]=="0"){
return 1;
}
}
return 0;
}
int main(int argc , char * argv[])
{
unsigned char arr[SIZE];
int i;
srandom(time(NULL));
for (i = 0; i < SIZE; i++)
arr[i] = (unsigned char) (random() % 255) + 1;
printf("Enter a number between 0 and %d: ", SIZE);
scanf(" %d", &i);
if (i >= 0 && i < SIZE) arr[i] = 0;
if (search0(arr,0,SIZE-1))
printf("Found !\n");
else
printf("Not found !\n");
return EXIT_SUCCESS;
}

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SCR/SCR2/TP03/exe Executable file
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42
SCR/SCR2/TP03/fork_and_fd1.c Normal file
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#include <sys/types.h>
#include <unistd.h>
#include<stdio.h>
#include <stdlib.h>
#include<assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#define msg1 "je suis le pere"
#define msg2 "je suis le fils !!!"
int main(int argc,char * argv[]){
int outfd;
pid_t p;
if (argc != 2){
printf("%s file\n",argv[0]);
exit(1);
}
//p=fork();
outfd = open(argv[1],O_WRONLY|O_CREAT,0644);
assert(outfd >= 0);
p=fork();
switch(p){
case (pid_t)-1 :
perror(NULL);
exit(2);
case (pid_t)0 :
write(outfd,msg2,strlen(msg2));
break;
default :
write (outfd,msg1,strlen(msg1));
break;
}
close(outfd);
}

42
SCR/SCR2/TP03/fork_and_fd2.c Normal file
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#include <sys/types.h>
#include <unistd.h>
#include<stdio.h>
#include <stdlib.h>
#include<assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#define msg1 "je suis le pere"
#define msg2 "je suis le fils !!!"
int main(int argc,char * argv[]){
int outfd;
pid_t p;
if (argc != 2){
printf("%s file\n",argv[0]);
exit(1);
}
p=fork();
outfd = open(argv[1],O_WRONLY|O_CREAT,0644);
assert(outfd >= 0);
//p=fork();
switch(p){
case (pid_t)-1 :
perror(NULL);
exit(2);
case (pid_t)0 :
write(outfd,msg2,strlen(msg2));
break;
default :
write (outfd,msg1,strlen(msg1));
break;
}
close(outfd);
}

10
SCR/SCR2/TP03/reponse.txt Normal file
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1)
le 1er non est écrit dans un cache. ensuite le programme se divise, et le non apparait donc 2 fois
2)
Dans le premier cas, un seul processus ouvre le fichier.
je suis le pere !!!je suis le fils !!!
Dans le deuxième cas le fichier est ouvert et modifier 2 fois simultanément.
je suis le pere !!!uis le fils !!!
3)

1
SCR/SCR2/TP03/reponse.txt~ Normal file
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1)

18
SCR/SCR2/TP03/session.c Normal file
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#include <stdio.h>
#include <unistd.h>
int main(int argc, char *argv[])
{
if (fork()){
printf("session = %d\n",getsid(getpid()));
while(1);
} else {
setsid();
printf("session = %d\n",getsid(getpid()));
while(1);
}
return 0;
}