septembre + octobre

SCR/TP05/ex1.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int main(int argc, char* argv[]){
+    int t[2];
+    char p;
+    int nbchar = 0;
+    pipe(t);
+    while (write(t[1],&p,sizeof(char)) > 0){
+        nbchar ++;
+        printf("%d\n",nbchar);
+    }
+    close(t[0]);
+    close(t[1]);
+    return 0;
+}

SCR/TP05/ex2.c

@@ -0,0 +1,28 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int main() {
+    char *command1[] = {"ls","ls", "-l", NULL};
+    char *command2[] = {"wc","wc", "-l", NULL};
+    int p[2];
+
+    pipe(p);
+    pid_t pid = fork();
+
+    if (pid == 0) {
+        close(p[1]);
+        dup2(p[0], STDIN_FILENO);
+        execvp(command2[0], command2+1);
+        exit(-1);
+    }
+    else{
+        close(p[0]);
+        dup2(p[1], STDOUT_FILENO);
+        execvp(command1[0], command1+1);
+        exit(-1);
+    }
+    return 0;
+}

SCR/TP05/ex3.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int main() {
+    char *command1[] = {"ls","ls", ".", NULL};
+    char *command2[] = {"wc","wc", "-l", NULL};
+    int p[2];
+
+    pipe(p);
+    pid_t pid = fork();
+
+    if (pid == 0) {
+        close(p[0]);
+        dup2(p[1], STDOUT_FILENO);
+        execvp(command1[0], &command1[1]);
+        close(p[1]);
+        exit(0);
+    }
+    else{
+        close(p[1]);
+        dup2(p[0], STDIN_FILENO);
+        //dup2(STDIN_FILENO,p[0]);
+        execvp(command2[0], &command2[1]);
+        close(p[0]);
+        exit(0);
+    }
+    return 0;
+}

SCR/TP05/pipe-ex.c

@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int main() {
+    int ecrit;
+    int lu;
+    int p[2];
+
+    pipe(p);
+    pid_t pf = fork();
+
+    if (pf == 0) {
+        pid_t pf1 = fork();
+        if (pf1 == 0) {
+            while (read(p[0],&lu,sizeof(int)) > 0){
+                printf("%d received %d\n", getpid(), lu);
+            }
+        }
+    }
+    else{
+        pid_t pf2 = fork();
+        if (pf2 == 0) {
+        }
+        else{
+            while(1){
+                sleep(3);
+                ecrit = getpid();
+                printf("%d sent %d\n", ecrit, ecrit);
+                write(p[1],&ecrit,sizeof(int));
+            }
+        }
+    }
+}