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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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SCR/SCR2/TP03/copy1byte.c
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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);
}
SCR/SCR2/TP03/copy1byte.c~
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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);
}
SCR/SCR2/TP03/ex1-stdio.c
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#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
int main(){
printf("NON");
if (fork()) {
printf("OUI\n");
}
}
SCR/SCR2/TP03/ex1-syscall.c
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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);
}
}
SCR/SCR2/TP03/ex2.txt
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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 !!! (:
SCR/SCR2/TP03/ex2.txt~
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je suis alexis et je suis vraiment crazy !!! (:
SCR/SCR2/TP03/ex3.txt
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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 !!! (:
SCR/SCR2/TP03/ex4.c
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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);
}
}
SCR/SCR2/TP03/ex4.c~
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#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
int main(){
printf("NON");
if (fork()) {
printf("OUI\n");
}
}
SCR/SCR2/TP03/ex5.c
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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;
}
SCR/SCR2/TP03/ex5.c~
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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;
}
SCR/SCR2/TP03/exe
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SCR/SCR2/TP03/fork_and_fd1.c
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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);
}
SCR/SCR2/TP03/fork_and_fd2.c
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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);
}
SCR/SCR2/TP03/reponse.txt
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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)
SCR/SCR2/TP03/reponse.txt~
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1)
SCR/SCR2/TP03/session.c
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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;
}