septembre + octobre
This commit is contained in:
45
SCR/TP03/copy1byte.c
Normal file
45
SCR/TP03/copy1byte.c
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@@ -0,0 +1,45 @@
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#include <sys/types.h>
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#include <unistd.h>
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#include<stdio.h>
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#include <stdlib.h>
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#include<assert.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#define msg1 "je suis le pere"
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#define msg2 "je suis le fils !!!"
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int main(int argc,char * argv[]){
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int infd,outfd;
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ssize_t nbread;
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char buf[1];
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pid_t p;
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if (argc != 3){
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printf("%s infile outfile\n",argv[0]);
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exit(1);
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}
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infd = open(argv[1],O_RDONLY);
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assert(infd >= 0);
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outfd = open(argv[2],O_WRONLY|O_CREAT|O_TRUNC,0644);
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assert(outfd >= 0);
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p=fork(); // <- decommentez cette ligne
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while(1){
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nbread=read(infd,buf,sizeof(buf));
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if (nbread <=0 ) break;
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write(outfd,buf,sizeof(buf));
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}
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close(infd);
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close(outfd);
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}
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45
SCR/TP03/copy1byte.c~
Normal file
45
SCR/TP03/copy1byte.c~
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@@ -0,0 +1,45 @@
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#include <sys/types.h>
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#include <unistd.h>
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#include<stdio.h>
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#include <stdlib.h>
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#include<assert.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#define msg1 "je suis le pere"
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#define msg2 "je suis le fils !!!"
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int main(int argc,char * argv[]){
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int infd,outfd;
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ssize_t nbread;
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char buf[1];
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pid_t p;
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if (argc != 3){
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printf("%s infile outfile\n",argv[0]);
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exit(1);
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}
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infd = open(argv[1],O_RDONLY);
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assert(infd >= 0);
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outfd = open(argv[2],O_WRONLY|O_CREAT|O_TRUNC,0644);
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assert(outfd >= 0);
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//p=fork(); // <- decommentez cette ligne
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while(1){
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nbread=read(infd,buf,sizeof(buf));
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if (nbread <=0 ) break;
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write(outfd,buf,sizeof(buf));
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}
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close(infd);
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close(outfd);
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}
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12
SCR/TP03/ex1-stdio.c
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12
SCR/TP03/ex1-stdio.c
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@@ -0,0 +1,12 @@
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdio.h>
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int main(){
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printf("NON");
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if (fork()) {
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printf("OUI\n");
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}
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}
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14
SCR/TP03/ex1-syscall.c
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14
SCR/TP03/ex1-syscall.c
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@@ -0,0 +1,14 @@
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdio.h>
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int main(){
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//printf("NON");
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write(STDOUT_FILENO,"NON",3);
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if (fork()) {
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//printf("OUI\n");
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write(STDOUT_FILENO,"OUI\n",4);
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}
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}
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5
SCR/TP03/ex2.txt
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5
SCR/TP03/ex2.txt
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je suis alexis et je suis vraiment crazy !!! (:
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je suis alexis et je suis vraiment crazy !!! (:
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je suis alexis et je suis vraiment crazy !!! (:
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je suis alexis et je suis vraiment crazy !!! (:
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je suis alexis et je suis vraiment crazy !!! (:
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1
SCR/TP03/ex2.txt~
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1
SCR/TP03/ex2.txt~
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@@ -0,0 +1 @@
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je suis alexis et je suis vraiment crazy !!! (:
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5
SCR/TP03/ex3.txt
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5
SCR/TP03/ex3.txt
Normal file
@@ -0,0 +1,5 @@
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j esuis alexis et je suis vraiment crazy !!! (:
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je suis alexis t jee suis vraiment crazy !!! (:
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je uiss alexis et je suis vraiment crazy !!! (:
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je suis alexis et je suis vraiment crazy !!! (:
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je suis alexis et je suis vraiment crazy !!! (:
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22
SCR/TP03/ex4.c
Normal file
22
SCR/TP03/ex4.c
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@@ -0,0 +1,22 @@
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(){
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int pid = fork();
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if (pid == -1) {
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exit(0);
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}
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if (pid == 0) {
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printf("fork = %d, pid = %d, ppid = %d\n",pid,getpid(),getppid());
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sleep(4);
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exit(2);
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}
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if (pid > 0) {
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printf("fork = %d, pid = %d, ppid = %d\n",pid,getpid(),getppid());
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printf("%d\n",wait());
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exit(2);
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}
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}
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12
SCR/TP03/ex4.c~
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12
SCR/TP03/ex4.c~
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@@ -0,0 +1,12 @@
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdio.h>
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int main(){
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printf("NON");
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if (fork()) {
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printf("OUI\n");
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}
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}
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124
SCR/TP03/ex5.c
Normal file
124
SCR/TP03/ex5.c
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@@ -0,0 +1,124 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#define SIZE 1000
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int search0(const unsigned char * t,int start,int end)
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{
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int i;
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for (i=start; i<end; i++){
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if (t[i]==0){
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return 1;
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}
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}
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return 0;
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}
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int search1(const unsigned char * t,int start,int end)
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{
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int milieu = (end-start)/2;
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int pid = fork();
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int i;
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int status;
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if (pid < 0){
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return 0;
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}
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if (pid == 0){
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exit(search0(t,start,milieu+1));
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}
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if (pid > 0){
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if (search0(t,milieu+1,end)){
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return 1;
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}
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wait(&status);
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return WEXITSTATUS(status);
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}
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return 0;
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}
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int search2(const unsigned char * t,int start,int end)
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{
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int i;
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int nbFils;
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int taille = (end-start);
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int pid;
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int status;
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printf("Enter a number between 0 and 100: ", SIZE);
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scanf(" %d", &nbFils);
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for (int i=0; i<nbFils; i++){
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pid = fork();
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if (pid < 0){
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exit(0);
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}
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if (pid == 0){
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exit(search0(t, i*taille/nbFils, (i+1)*taille/nbFils));
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}
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}
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for (int i=0; i<nbFils; i++){
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wait(&status);
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if (WEXITSTATUS(status) == 1){
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return 1;
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}
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}
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return 0;
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}
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int search3(const unsigned char * t,int start,int end)
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{
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int i;
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int nbFils;
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int taille = (end-start);
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int pid;
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int status;
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printf("Enter a number between 0 and 100: ", SIZE);
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scanf(" %d", &nbFils);
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int* child_pids = (int*) malloc(sizeof(int) * nbFils);
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for (int i=0; i<nbFils; i++){
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pid = fork();
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if (pid < 0){
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exit(0);
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}
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if (pid == 0){
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exit(search0(t, i*taille/nbFils, (i+1)*taille/nbFils));
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}
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child_pids[i] = pid;
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}
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for (int i=0; i<nbFils; i++){
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wait(&status);
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if (WEXITSTATUS(status) == 1){
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for (int j = 0; j < nbFils; j++) {
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kill(child_pids[j], SIGTERM);
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}
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return 1;
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}
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}
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return 0;
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}
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int main(int argc , char * argv[])
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{
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unsigned char arr[SIZE];
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int i;
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srandom(time(NULL));
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for (i = 0; i < SIZE; i++)
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arr[i] = (unsigned char) (random() % 255) + 1;
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printf("Enter a number between 0 and %d: ", SIZE);
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scanf(" %d", &i);
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if (i >= 0 && i < SIZE) arr[i] = 0;
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if (search3(arr,0,SIZE-1))
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printf("Found !\n");
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else
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printf("Not found !\n");
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return EXIT_SUCCESS;
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}
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36
SCR/TP03/ex5.c~
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36
SCR/TP03/ex5.c~
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@@ -0,0 +1,36 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#define SIZE 1000
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int search0(const unsigned char * t,int start,int end)
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{
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int i;
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for (i=start; i<end; i++){
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if (t[i]=="0"){
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return 1;
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}
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}
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return 0;
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}
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int main(int argc , char * argv[])
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{
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unsigned char arr[SIZE];
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int i;
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srandom(time(NULL));
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for (i = 0; i < SIZE; i++)
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arr[i] = (unsigned char) (random() % 255) + 1;
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printf("Enter a number between 0 and %d: ", SIZE);
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scanf(" %d", &i);
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if (i >= 0 && i < SIZE) arr[i] = 0;
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if (search0(arr,0,SIZE-1))
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printf("Found !\n");
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else
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printf("Not found !\n");
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return EXIT_SUCCESS;
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}
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BIN
SCR/TP03/exe
Executable file
BIN
SCR/TP03/exe
Executable file
Binary file not shown.
42
SCR/TP03/fork_and_fd1.c
Normal file
42
SCR/TP03/fork_and_fd1.c
Normal file
@@ -0,0 +1,42 @@
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#include <sys/types.h>
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#include <unistd.h>
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#include<stdio.h>
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#include <stdlib.h>
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#include<assert.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#define msg1 "je suis le pere"
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#define msg2 "je suis le fils !!!"
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int main(int argc,char * argv[]){
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int outfd;
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pid_t p;
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if (argc != 2){
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printf("%s file\n",argv[0]);
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exit(1);
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}
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//p=fork();
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outfd = open(argv[1],O_WRONLY|O_CREAT,0644);
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assert(outfd >= 0);
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p=fork();
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switch(p){
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case (pid_t)-1 :
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perror(NULL);
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exit(2);
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case (pid_t)0 :
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write(outfd,msg2,strlen(msg2));
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break;
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default :
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write (outfd,msg1,strlen(msg1));
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break;
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}
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close(outfd);
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}
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42
SCR/TP03/fork_and_fd2.c
Normal file
42
SCR/TP03/fork_and_fd2.c
Normal file
@@ -0,0 +1,42 @@
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#include <sys/types.h>
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#include <unistd.h>
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#include<stdio.h>
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#include <stdlib.h>
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#include<assert.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#define msg1 "je suis le pere"
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#define msg2 "je suis le fils !!!"
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int main(int argc,char * argv[]){
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int outfd;
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pid_t p;
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if (argc != 2){
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printf("%s file\n",argv[0]);
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exit(1);
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}
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p=fork();
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outfd = open(argv[1],O_WRONLY|O_CREAT,0644);
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assert(outfd >= 0);
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//p=fork();
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switch(p){
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case (pid_t)-1 :
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perror(NULL);
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exit(2);
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case (pid_t)0 :
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write(outfd,msg2,strlen(msg2));
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break;
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default :
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write (outfd,msg1,strlen(msg1));
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break;
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}
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close(outfd);
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}
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10
SCR/TP03/reponse.txt
Normal file
10
SCR/TP03/reponse.txt
Normal file
@@ -0,0 +1,10 @@
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1)
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le 1er non est écrit dans un cache. ensuite le programme se divise, et le non apparait donc 2 fois
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2)
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Dans le premier cas, un seul processus ouvre le fichier.
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je suis le pere !!!je suis le fils !!!
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Dans le deuxième cas le fichier est ouvert et modifier 2 fois simultanément.
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je suis le pere !!!uis le fils !!!
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3)
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1
SCR/TP03/reponse.txt~
Normal file
1
SCR/TP03/reponse.txt~
Normal file
@@ -0,0 +1 @@
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1)
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18
SCR/TP03/session.c
Normal file
18
SCR/TP03/session.c
Normal file
@@ -0,0 +1,18 @@
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#include <stdio.h>
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#include <unistd.h>
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int main(int argc, char *argv[])
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{
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if (fork()){
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printf("session = %d\n",getsid(getpid()));
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while(1);
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} else {
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setsid();
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printf("session = %d\n",getsid(getpid()));
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while(1);
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}
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return 0;
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}
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Reference in New Issue
Block a user